fix: hardcode map scale to CLOSEST instead of NORMAL (#632)

Bumps [com.google.guava:guava](https://github.com/google/guava) from 33.4.8-jre to 33.5.0-jre.
- [Release notes](https://github.com/google/guava/releases)
- [Commits](https://github.com/google/guava/commits)

---
updated-dependencies:
- dependency-name: com.google.guava:guava
  dependency-version: 33.5.0-jre
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: CI Tests
+name: CI Tests & Publish
 
 on:
   push:
@@ -17,11 +17,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout for CI 🛎️'
-        uses: actions/checkout@v4
-      - name: 'Set up JDK 17 📦'
-        uses: actions/setup-java@v4
+        uses: actions/checkout@v6
+      - name: 'Set up JDK 21 📦'
+        uses: actions/setup-java@v5
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
       - name: 'Build with Gradle 🏗️'
         uses: gradle/gradle-build-action@v3
@@ -31,7 +31,7 @@ jobs:
           SNAPSHOTS_MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
           SNAPSHOTS_MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
       - name: 'Publish Test Report 📊'
-        uses: mikepenz/action-junit-report@v4
+        uses: mikepenz/action-junit-report@v6
         if: success() || failure() # Continue on failure
         with:
           report_paths: '**/build/test-results/test/TEST-*.xml'
@@ -41,4 +41,56 @@ jobs:
         id: fetch-version
       - name: Get Version
         run: |
-          echo "version_name=${{steps.fetch-version.outputs.VERSION_NAME}}" >> $GITHUB_ENV
+          echo "version_name=${{steps.fetch-version.outputs.VERSION_NAME}}" >> $GITHUB_ENV
+      - name: 'Publish to William278.net 🚀'
+        uses: WiIIiam278/bones-publish-action@v1
+        with:
+          api-key: ${{ secrets.BONES_API_KEY }}
+          project: 'husksync'
+          channel: 'alpha'
+          version: ${{ env.version_name }}
+          changelog: ${{ github.event.head_commit.message }}
+          distro-names: |
+            paper-1.21.1
+            paper-1.21.4
+            paper-1.21.5
+            paper-1.21.8
+            paper-1.21.10
+            paper-1.21.11
+            fabric-1.21.1
+            fabric-1.21.4
+            fabric-1.21.5
+            fabric-1.21.8
+          distro-groups: |
+            paper
+            paper
+            paper
+            paper
+            paper
+            paper
+            fabric
+            fabric
+            fabric
+            fabric
+          distro-descriptions: |
+            Paper 1.21.1
+            Paper 1.21.4
+            Paper 1.21.5
+            Paper 1.21.8
+            Paper 1.21.10
+            Paper 1.21.11
+            Fabric 1.21.1
+            Fabric 1.21.4
+            Fabric 1.21.5
+            Fabric 1.21.8
+          files: |
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.1.jar
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.4.jar
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.5.jar
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.8.jar
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.10.jar
+            target/HuskSync-Bukkit-${{ env.version_name }}+mc.1.21.11.jar
+            target/HuskSync-Fabric-${{ env.version_name }}+mc.1.21.1.jar
+            target/HuskSync-Fabric-${{ env.version_name }}+mc.1.21.4.jar
+            target/HuskSync-Fabric-${{ env.version_name }}+mc.1.21.5.jar
+            target/HuskSync-Fabric-${{ env.version_name }}+mc.1.21.8.jar

.github/workflows/pr_tests.yml

@@ -13,18 +13,18 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout for CI 🛎'
-        uses: actions/checkout@v4
-      - name: 'Set up JDK 17 📦'
-        uses: actions/setup-java@v4
+        uses: actions/checkout@v6
+      - name: 'Set up JDK 21 📦'
+        uses: actions/setup-java@v5
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
       - name: 'Build with Gradle 🏗️'
         uses: gradle/gradle-build-action@v3
         with:
           arguments: test
       - name: 'Publish Test Report 📊'
-        uses: mikepenz/action-junit-report@v4
+        uses: mikepenz/action-junit-report@v6
         if: success() || failure() # Continue on failure
         with:
           report_paths: '**/build/test-results/test/TEST-*.xml'

.github/workflows/release.yml

@@ -1,4 +1,4 @@
-name: Release Tests
+name: Release Tests & Publish
 
 on:
   release:
@@ -13,11 +13,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout for CI 🛎️'
-        uses: actions/checkout@v4
-      - name: 'Set up JDK 17 📦'
-        uses: actions/setup-java@v4
+        uses: actions/checkout@v6
+      - name: 'Set up JDK 21 📦'
+        uses: actions/setup-java@v5
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
       - name: 'Build with Gradle 🏗️'
         uses: gradle/gradle-build-action@v3
@@ -27,7 +27,55 @@ jobs:
           RELEASES_MAVEN_USERNAME: ${{ secrets.MAVEN_USERNAME }}
           RELEASES_MAVEN_PASSWORD: ${{ secrets.MAVEN_PASSWORD }}
       - name: 'Publish Test Report 📊'
-        uses: mikepenz/action-junit-report@v4
+        uses: mikepenz/action-junit-report@v6
         if: success() || failure() # Continue on failure
         with:
-          report_paths: '**/build/test-results/test/TEST-*.xml'
+          report_paths: '**/build/test-results/test/TEST-*.xml'
+      - name: 'Publish to William278.net 🚀'
+        uses: WiIIiam278/bones-publish-action@v1
+        with:
+          api-key: ${{ secrets.BONES_API_KEY }}
+          project: 'husksync'
+          channel: 'release'
+          version: ${{ github.event.release.tag_name }}
+          changelog: ${{ github.event.release.body }}
+          distro-names: |
+            paper-1.21.1
+            paper-1.21.4
+            paper-1.21.5
+            paper-1.21.8
+            paper-1.21.10
+            fabric-1.21.1
+            fabric-1.21.4
+            fabric-1.21.5
+            fabric-1.21.8
+          distro-groups: |
+            paper
+            paper
+            paper
+            paper
+            paper
+            fabric
+            fabric
+            fabric
+            fabric
+          distro-descriptions: |
+            Paper 1.21.1
+            Paper 1.21.4
+            Paper 1.21.5
+            Paper 1.21.8
+            Paper 1.21.10
+            Fabric 1.21.1
+            Fabric 1.21.4
+            Fabric 1.21.5
+            Fabric 1.21.8
+          files: |
+            target/HuskSync-Bukkit-${{ github.event.release.tag_name }}+mc.1.21.1.jar
+            target/HuskSync-Bukkit-${{ github.event.release.tag_name }}+mc.1.21.4.jar
+            target/HuskSync-Bukkit-${{ github.event.release.tag_name }}+mc.1.21.5.jar
+            target/HuskSync-Bukkit-${{ github.event.release.tag_name }}+mc.1.21.8.jar
+            target/HuskSync-Bukkit-${{ github.event.release.tag_name }}+mc.1.21.10.jar
+            target/HuskSync-Fabric-${{ github.event.release.tag_name }}+mc.1.21.1.jar
+            target/HuskSync-Fabric-${{ github.event.release.tag_name }}+mc.1.21.4.jar
+            target/HuskSync-Fabric-${{ github.event.release.tag_name }}+mc.1.21.5.jar
+            target/HuskSync-Fabric-${{ github.event.release.tag_name }}+mc.1.21.8.jar

.github/workflows/update_docs.yml

@@ -13,12 +13,13 @@ permissions:
   contents: write
 
 jobs:
-  deploy-wiki:
+  update-docs:
+    name: 'Update Docs'
     runs-on: ubuntu-latest
     steps:
       - name: 'Checkout for CI 🛎️'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: 'Push Docs to Github Wiki 📄️'
-        uses: Andrew-Chen-Wang/github-wiki-action@v4
+        uses: Andrew-Chen-Wang/github-wiki-action@v5
         with:
           path: 'docs'

.gitignore

@@ -121,5 +121,4 @@ run/
 
 # Don't include generated test suite files
 /test/servers/
-/test/HuskSync
-/test/config.yml
+/test/HuskSync

README.md

@@ -5,7 +5,7 @@
         <img src="https://img.shields.io/github/actions/workflow/status/WiIIiam278/HuskSync/ci.yml?branch=master&logo=github"/>
     </a>
     <a href="https://repo.william278.net/#/releases/net/william278/husksync/">
-        <img src="https://repo.william278.net/api/badge/latest/releases/net/william278/husksync?color=00fb9a&name=Maven&prefix=v" />
+        <img src="https://repo.william278.net/api/badge/latest/releases/net/william278/husksync/husksync-common?color=00fb9a&name=Maven&prefix=v" />
     </a>
     <a href="https://discord.gg/tVYhJfyDWG">
         <img src="https://img.shields.io/discord/818135932103557162.svg?label=&logo=discord&logoColor=fff&color=7389D8&labelColor=6A7EC2" />
@@ -43,21 +43,48 @@
 
 **Ready?** [It's syncing time!](https://william278.net/docs/husksync/setup)
 
-## Setup
-Requires a MySQL/Mongo/PostgreSQL database, a Redis (v5.0+) server and any number of Spigot-based 1.17.1+ Minecraft servers, running Java 17+.
+## Compatibility
+HuskSync supports the following [compatible versions](https://william278.net/docs/husksync/compatibility) of Minecraft. Since v3.7, you must download the correct version of HuskSync for your server:
 
-1. Place the plugin jar file in the /plugins/ directory of each Spigot server. You do not need to install HuskSync as a proxy plugin.
+|    Minecraft    | Latest HuskSync | Java Version | Platforms     | Support Status                |
+|:---------------:|:---------------:|:------------:|:--------------|:------------------------------|
+|     1.21.10     |    _latest_     |      21      | Paper         | ✅ **Active Release**          |
+|    1.21.7/8     |    _latest_     |      21      | Paper, Fabric | ✅ **August 2026**             |
+|     1.21.6      |      3.8.5      |      21      | Paper         | 🗃️ Archived (July 2025)      |
+|     1.21.5      |    _latest_     |      21      | Paper         | ✅ **February 2026** (Non-LTS) |
+|     1.21.4      |    _latest_     |      21      | Paper, Fabric | ✅ **February 2026** (Non-LTS) |
+|     1.21.3      |      3.7.1      |      21      | Paper, Fabric | 🗃️ Archived (December 2024)  |
+|     1.21.1      |    _latest_     |      21      | Paper, Fabric | ✅ **May 2026** (LTS)          |
+|     1.20.6      |      3.6.8      |      17      | Paper         | 🗃️ Archived (October 2024)   |
+|     1.20.4      |      3.6.8      |      17      | Paper         | 🗃️ Archived (July 2024)      |
+|     1.20.1      |      3.8.7      |      17      | Paper, Fabric | 🗃️ Archived (November 2024)  |
+| 1.17.1 - 1.19.4 |      3.6.8      |      17      | Paper         | 🗃️ Archived                  |
+|     1.16.5      |      3.2.1      |      16      | Paper         | 🗃️ Archived                  |
+
+HuskSync is primarily developed against the latest release. Old Minecraft versions are allocated a support channel based on popularity, mod support, etc:
+
+* Long Term Support (LTS) &ndash; Supported for up to 12-18 months
+* Non-Long Term Support (Non-LTS) &ndash; Supported for 3-6 months
+
+Verify your purchase on Discord and [Download HuskSync](https://william278.net/project/husksync/download) for your server.
+
+## Setup
+Requires a [MySQL/MariaDB/Mongo/PostgreSQL database](https://william278.net/docs/husksync/database), a [Redis (v5.0+) server]((https://william278.net/docs/husksync/redis)) and a network of [compatible Spigot or Fabric Minecraft servers](https://william278.net/docs/husksync/compatibility).
+
+1. Place the plugin jar file in the `/plugins` or `/mods` directory of each Spigot/Fabric server. You do not need to install HuskSync as a proxy plugin.
 2. Start, then stop every server to let HuskSync generate the config file.
-3. Navigate to the HuskSync config file on each server (~/plugins/HuskSync/config.yml) and fill in both your database and Redis server credentials.
+3. Navigate to the HuskSync config file on each server and fill in both your database and Redis server credentials.
 4. Start every server again and synchronization will begin.
 
 ## Development
-To build HuskSync, simply run the following in the root of the repository:
+To build HuskSync, simply run the following in the root of the repository (building requires Java 21). Builds will be output in `/target`:
 
 ```bash
 ./gradlew clean build
 ```
 
+HuskSync uses `essential-multi-version` (Fabric) and `preprocessor` (Bukkit) to target multiple versions of Minecraft in one codebase - [check here](https://github.com/WiIIiam278/PreProcessor?tab=readme-ov-file#code-example) for a preprocessor comment logic reference.
+
 ### License
 HuskSync is licensed under the Apache 2.0 license.
 
@@ -66,7 +93,7 @@ HuskSync is licensed under the Apache 2.0 license.
 Contributions to the project are welcome&mdash;feel free to open a pull request with new features, improvements and/or fixes!
 
 ### Support
-Due to its complexity, official binaries and customer support for HuskSync is provided through a paid model. This means that support is only available to users who have purchased a license to the plugin from Spigot, Polymart, Craftaro, or BuiltByBit and have provided proof of purchase. Please join our Discord server if you have done so and need help!
+Due to its complexity, official binaries and customer support for HuskSync is provided through a paid model. This means that support is only available to users who have purchased a license to the plugin from Spigot, Polymart, or BuiltByBit and have provided proof of purchase. Please join our Discord server if you have done so and need help!
 
 ### Translations
 Translations of the plugin locales are welcome to help make the plugin more accessible. Please submit a pull request with your translations as a `.yml` file.
@@ -82,4 +109,4 @@ Translations of the plugin locales are welcome to help make the plugin more acce
 - [bStats](https://bstats.org/plugin/bukkit/HuskSync%20-%20Bukkit/13140) &mdash; View plugin metrics
 
 ---
-&copy; [William278](https://william278.net/), 2023. Licensed under the Apache-2.0 License.
+&copy; [William278](https://william278.net/), 2025. Licensed under the Apache-2.0 License.

build.gradle

@@ -1,9 +1,11 @@
 import org.apache.tools.ant.filters.ReplaceTokens
 
 plugins {
-    id 'com.github.johnrengelman.shadow' version '8.1.1'
+    id 'com.gradleup.shadow' version '9.2.2'
     id 'org.cadixdev.licenser' version '0.6.1' apply false
-    id 'org.ajoberstar.grgit' version '5.2.2'
+    id 'dev.architectury.loom' version '1.9-SNAPSHOT' apply false
+    id 'gg.essential.multi-version.root' apply false
+    id 'org.ajoberstar.grgit' version '5.3.2'
     id 'maven-publish'
     id 'java'
 }
@@ -57,7 +59,12 @@ publishing {
 }
 
 allprojects {
-    apply plugin: 'com.github.johnrengelman.shadow'
+    // Ignore parent projects (no jars)
+    if (project.name == 'fabric' || project.name == 'bukkit') {
+        return
+    }
+    
+    apply plugin: 'com.gradleup.shadow'
     apply plugin: 'org.cadixdev.licenser'
     apply plugin: 'java'
 
@@ -69,25 +76,23 @@ allprojects {
     repositories {
         mavenLocal()
         mavenCentral()
+        maven { url 'https://repo.william278.net/releases/' }
+        maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
         maven { url 'https://hub.spigotmc.org/nexus/content/repositories/snapshots/' }
-        maven { url "https://repo.dmulloy2.net/repository/public/" }
+        maven { url 'https://repo.papermc.io/repository/maven-public/' }
         maven { url 'https://repo.codemc.io/repository/maven-public/' }
         maven { url 'https://repo.minebench.de/' }
         maven { url 'https://repo.alessiodp.com/releases/' }
         maven { url 'https://jitpack.io' }
         maven { url 'https://mvn-repo.arim.space/lesser-gpl3/' }
         maven { url 'https://libraries.minecraft.net/' }
-        maven { url 'https://repo.william278.net/releases/' }
     }
 
     dependencies {
-        testImplementation 'org.junit.jupiter:junit-jupiter-api:5.10.2'
-        testImplementation 'org.junit.jupiter:junit-jupiter-params:5.10.2'
-        testImplementation 'org.junit.jupiter:junit-jupiter-engine:5.10.2'
-    }
-
-    test {
-        useJUnitPlatform()
+        testImplementation(platform("org.junit:junit-bom:6.0.1"))
+        testImplementation 'org.junit.jupiter:junit-jupiter'
+        testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+        testCompileOnly 'org.jetbrains:annotations:26.0.2-1'
     }
 
     license {
@@ -96,17 +101,45 @@ allprojects {
         newLine = true
     }
 
+    test {
+        useJUnitPlatform()
+    }
+
     processResources {
+        def tokenMap = rootProject.ext.properties
+        tokenMap.merge("grgit", '', (s, s2) -> s)
         filesMatching(['**/*.json', '**/*.yml']) {
             filter ReplaceTokens as Class, beginToken: '${', endToken: '}',
-                    tokens: rootProject.ext.properties
+                    tokens: tokenMap
         }
     }
 }
 
 subprojects {
+    // Ignore parent projects (no jars)
+    if (['fabric', 'bukkit'].contains(project.name)) {
+        return
+    }
+
+    // Project naming
     version rootProject.version
-    archivesBaseName = "${rootProject.name}-${project.name.capitalize()}"
+    def name = "$rootProject.name"
+    if (rootProject != project.parent) {
+        name += "-${project.parent.name.capitalize()}"
+    } else {
+        name += "-${project.name.capitalize()}"
+    }
+    archivesBaseName = name
+
+    // Version-specific configuration
+    if (['fabric', 'bukkit'].contains(project.parent?.name)) {
+        compileJava.options.release.set 21
+        version += "+mc.${project.name}"
+
+        if (project.parent?.name?.equals('fabric')) {
+            apply plugin: 'dev.architectury.loom'
+        }
+    }
 
     jar {
         from '../LICENSE'
@@ -118,7 +151,7 @@ subprojects {
     }
 
     // API publishing
-    if (['common', 'bukkit'].contains(project.name)) {
+    if (project.name == 'common' || ['fabric', 'bukkit'].contains(project.parent?.name)) {
         java {
             withSourcesJar()
             withJavadocJar()
@@ -145,22 +178,35 @@ subprojects {
                 }
             }
 
-            if (['bukkit'].contains(project.name)) {
+            if (project.parent?.name?.equals('bukkit')) {
                 publications {
-                    mavenJavaBukkit(MavenPublication) {
+                    "mavenJavaBukkit_${project.name.replace('.', '_')}"(MavenPublication) {
                         groupId = 'net.william278.husksync'
                         artifactId = 'husksync-bukkit'
-                        version = "$rootProject.version"
+                        version = "$rootProject.version+$project.name"
                         artifact shadowJar
                         artifact sourcesJar
                         artifact javadocJar
                     }
                 }
             }
+
+            if (project.parent?.name?.equals('fabric')) {
+                publications {
+                    "mavenJavaFabric_${project.name.replace('.', '_')}"(MavenPublication) {
+                        groupId = 'net.william278.husksync'
+                        artifactId = 'husksync-fabric'
+                        version = "$rootProject.version+$project.name"
+                        artifact remapJar
+                        artifact sourcesJar
+                        artifact javadocJar
+                    }
+                }
+            }
         }
     }
 
-    jar.dependsOn(shadowJar)
+    jar.dependsOn shadowJar
     clean.delete "$rootDir/target"
 }
 
@@ -175,7 +221,7 @@ def versionMetadata() {
 
     // If unclean, return the last commit hash with -indev
     if (!grgit.status().clean) {
-        return '-' + grgit.head().abbreviatedId  + '-indev'
+        return '-' + grgit.head().abbreviatedId + '-indev'
     }
 
     // Otherwise if this matches a tag, return nothing

bukkit/1.21.1/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=1.21.1
+minecraft_version_numeric=12101
+minecraft_api_version=1.21
+paper_api_version=1.21.1-R0.1-SNAPSHOT

bukkit/1.21.10/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=>=1.21.9 <=1.21.10
+minecraft_version_numeric=12110
+minecraft_api_version=1.21
+paper_api_version=1.21.10-R0.1-SNAPSHOT

bukkit/1.21.11/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=>=1.21.11 <=1.21.11
+minecraft_version_numeric=12111
+minecraft_api_version=1.21
+paper_api_version=1.21.11-R0.1-SNAPSHOT

bukkit/1.21.4/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=1.21.4
+minecraft_version_numeric=12104
+minecraft_api_version=1.21
+paper_api_version=1.21.4-R0.1-SNAPSHOT

bukkit/1.21.5/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=1.21.5
+minecraft_version_numeric=12105
+minecraft_api_version=1.21
+paper_api_version=1.21.5-R0.1-SNAPSHOT

bukkit/1.21.8/gradle.properties

@@ -0,0 +1,4 @@
+minecraft_version_range=>=1.21.7 <=1.21.8
+minecraft_version_numeric=12108
+minecraft_api_version=1.21
+paper_api_version=1.21.8-R0.1-SNAPSHOT

bukkit/build.gradle

@@ -1,37 +1,68 @@
+plugins {
+    id 'java'
+    id 'net.william278.preprocessor' version '1.0'
+    id 'xyz.jpenilla.run-paper' version '2.3.1'
+    id 'maven-publish'
+}
+
 dependencies {
     implementation project(path: ':common')
 
-    implementation 'org.bstats:bstats-bukkit:3.0.2'
+    implementation 'net.william278.uniform:uniform-bukkit:1.3.9'
+    implementation 'net.william278.uniform:uniform-paper:1.3.9'
+    implementation 'net.william278.toilet:toilet-bukkit:1.0.16'
     implementation 'net.william278:mpdbdataconverter:1.0.1'
     implementation 'net.william278:hsldataconverter:1.0'
-    implementation 'net.william278:mapdataapi:1.0.3'
-    implementation 'net.william278:andjam:1.0.2'
-    implementation 'me.lucko:commodore:2.2'
-    implementation 'net.kyori:adventure-platform-bukkit:4.3.2'
-    implementation 'dev.triumphteam:triumph-gui:3.1.7'
+    implementation 'net.william278:mapdataapi:2.0'
+    implementation 'org.bstats:bstats-bukkit:3.1.0'
+    implementation 'net.kyori:adventure-platform-bukkit:4.4.1'
+    implementation 'dev.triumphteam:triumph-gui:3.1.12'
     implementation 'space.arim.morepaperlib:morepaperlib:0.4.4'
-    implementation 'de.tr7zw:item-nbt-api:2.12.4'
+    implementation 'de.tr7zw:item-nbt-api:2.15.5'
 
-    compileOnly 'org.spigotmc:spigot-api:1.17.1-R0.1-SNAPSHOT'
-    compileOnly 'com.github.retrooper.packetevents:spigot:2.3.0'
-    compileOnly 'com.comphenix.protocol:ProtocolLib:5.1.0'
-    compileOnly 'org.projectlombok:lombok:1.18.32'
-    compileOnly 'commons-io:commons-io:2.16.1'
-    compileOnly 'org.json:json:20240303'
+    compileOnly "io.papermc.paper:paper-api:${paper_api_version}"
+    compileOnly 'com.github.retrooper:packetevents-spigot:2.10.1'
+    compileOnly 'com.github.dmulloy2:ProtocolLib:5.3.0'
+    compileOnly 'org.projectlombok:lombok:1.18.42'
+    compileOnly 'commons-io:commons-io:2.21.0'
+    compileOnly 'org.json:json:20250517'
     compileOnly 'net.william278:minedown:1.8.2'
-    compileOnly 'de.exlll:configlib-yaml:4.5.0'
-    compileOnly 'com.zaxxer:HikariCP:5.1.0'
+    compileOnly 'de.exlll:configlib-yaml:4.6.4'
+    compileOnly 'com.zaxxer:HikariCP:7.0.2'
     compileOnly 'net.william278:DesertWell:2.0.4'
     compileOnly 'net.william278:AdvancementAPI:97a9583413'
     compileOnly "redis.clients:jedis:$jedis_version"
 
-    annotationProcessor 'org.projectlombok:lombok:1.18.32'
+    annotationProcessor 'org.projectlombok:lombok:1.18.42'
+}
+
+processResources {
+    filesMatching(['**/*.json', '**/*.yml']) {
+        expand([
+                version: version,
+                paper_api_version: paper_api_version,
+                minecraft_version: project.name,
+                minecraft_version_range: minecraft_version_range,
+                minecraft_api_version: minecraft_api_version
+        ])
+    }
+}
+
+sourceSets.main {
+    java.srcDirs '../src/main/java'
+    resources.srcDirs '../src/main/resources'
+}
+javadoc.setSource('./build/generated/preprocessed/main/java')
+
+preprocess {
+    vars.put('MC', minecraft_version_numeric)
 }
 
 shadowJar {
     dependencies {
         exclude(dependency('com.mojang:brigadier'))
     }
+
     relocate 'org.apache.commons.io', 'net.william278.husksync.libraries.commons.io'
     relocate 'org.apache.commons.text', 'net.william278.husksync.libraries.commons.text'
     relocate 'org.apache.commons.lang3', 'net.william278.husksync.libraries.commons.lang3'
@@ -42,20 +73,30 @@ shadowJar {
     relocate 'org.intellij', 'net.william278.husksync.libraries'
     relocate 'com.zaxxer', 'net.william278.husksync.libraries'
     relocate 'de.exlll', 'net.william278.husksync.libraries'
+    relocate 'net.william278.uniform', 'net.william278.husksync.libraries.uniform'
+    relocate 'net.william278.toilet', 'net.william278.husksync.libraries.toilet'
     relocate 'net.william278.desertwell', 'net.william278.husksync.libraries.desertwell'
     relocate 'net.william278.paginedown', 'net.william278.husksync.libraries.paginedown'
     relocate 'net.william278.mapdataapi', 'net.william278.husksync.libraries.mapdataapi'
-    relocate 'net.william278.andjam', 'net.william278.husksync.libraries.andjam'
     relocate 'net.william278.mpdbconverter', 'net.william278.husksync.libraries.mpdbconverter'
     relocate 'net.william278.hslmigrator', 'net.william278.husksync.libraries.hslconverter'
     relocate 'org.json', 'net.william278.husksync.libraries.json'
     relocate 'net.querz', 'net.william278.husksync.libraries.nbtparser'
     relocate 'net.roxeez', 'net.william278.husksync.libraries'
-    relocate 'me.lucko.commodore', 'net.william278.husksync.libraries.commodore'
     relocate 'org.bstats', 'net.william278.husksync.libraries.bstats'
     relocate 'dev.triumphteam.gui', 'net.william278.husksync.libraries.triumphgui'
     relocate 'space.arim.morepaperlib', 'net.william278.husksync.libraries.paperlib'
     relocate 'de.tr7zw.changeme.nbtapi', 'net.william278.husksync.libraries.nbtapi'
 
     minimize()
+}
+
+tasks {
+    runServer {
+        minecraftVersion(project.name)
+
+        downloadPlugins {
+            github("plan-player-analytics", "Plan", "5.6.2965", "Plan-5.6-build-2965.jar")
+        }
+    }
 }

bukkit/gradle.properties

@@ -0,0 +1,5 @@
+org.gradle.daemon=false
+org.gradle.parallel=true
+org.gradle.configureoncommand=true
+org.gradle.parallel.threads=4
+org.gradle.jvmargs=-Xmx8G

bukkit/src/main/java/net/william278/husksync/BukkitHuskSync.java

@@ -23,6 +23,7 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import com.google.gson.Gson;
+import de.tr7zw.changeme.nbtapi.NBT;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -34,7 +35,7 @@ import net.william278.husksync.adapter.DataAdapter;
 import net.william278.husksync.adapter.GsonAdapter;
 import net.william278.husksync.adapter.SnappyGsonAdapter;
 import net.william278.husksync.api.BukkitHuskSyncAPI;
-import net.william278.husksync.command.BukkitCommand;
+import net.william278.husksync.command.PluginCommand;
 import net.william278.husksync.config.Locales;
 import net.william278.husksync.config.Server;
 import net.william278.husksync.config.Settings;
@@ -46,6 +47,8 @@ import net.william278.husksync.database.PostgresDatabase;
 import net.william278.husksync.event.BukkitEventDispatcher;
 import net.william278.husksync.hook.PlanHook;
 import net.william278.husksync.listener.BukkitEventListener;
+import net.william278.husksync.listener.LockedHandler;
+import net.william278.husksync.maps.BukkitMapHandler;
 import net.william278.husksync.migrator.LegacyMigrator;
 import net.william278.husksync.migrator.Migrator;
 import net.william278.husksync.migrator.MpdbMigrator;
@@ -54,16 +57,19 @@ import net.william278.husksync.sync.DataSyncer;
 import net.william278.husksync.user.BukkitUser;
 import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.util.BukkitLegacyConverter;
-import net.william278.husksync.util.BukkitMapPersister;
 import net.william278.husksync.util.BukkitTask;
 import net.william278.husksync.util.LegacyConverter;
+import net.william278.toilet.BukkitToilet;
+import net.william278.toilet.Toilet;
+import net.william278.uniform.Uniform;
+import net.william278.uniform.bukkit.BukkitUniform;
 import org.bstats.bukkit.Metrics;
 import org.bukkit.entity.Player;
 import org.bukkit.map.MapView;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.plugin.java.JavaPlugin;
 import org.jetbrains.annotations.NotNull;
 import space.arim.morepaperlib.MorePaperLib;
-import space.arim.morepaperlib.commands.CommandRegistration;
 import space.arim.morepaperlib.scheduling.AsynchronousScheduler;
 import space.arim.morepaperlib.scheduling.AttachedScheduler;
 import space.arim.morepaperlib.scheduling.GracefulScheduling;
@@ -76,8 +82,9 @@ import java.util.stream.Collectors;
 
 @Getter
 @NoArgsConstructor
+@SuppressWarnings("unchecked")
 public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.Supplier,
-        BukkitEventDispatcher, BukkitMapPersister {
+        BukkitEventDispatcher, BukkitMapHandler {
 
     /**
      * Metrics ID for <a href="https://bstats.org/plugin/bukkit/HuskSync%20-%20Bukkit/13140">HuskSync on Bukkit</a>.
@@ -85,15 +92,17 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
     private static final int METRICS_ID = 13140;
     private static final String PLATFORM_TYPE_ID = "bukkit";
 
-    private final Map<Identifier, Serializer<? extends Data>> serializers = Maps.newLinkedHashMap();
+    private final HashMap<Identifier, Serializer<? extends Data>> serializers = Maps.newHashMap();
     private final Map<UUID, Map<Identifier, Data>> playerCustomDataStore = Maps.newConcurrentMap();
     private final Map<Integer, MapView> mapViews = Maps.newConcurrentMap();
     private final List<Migrator> availableMigrators = Lists.newArrayList();
     private final Set<UUID> lockedPlayers = Sets.newConcurrentHashSet();
+    private final Set<UUID> disconnectingPlayers = Sets.newConcurrentHashSet();
 
     private boolean disabling;
     private Gson gson;
     private AudienceProvider audiences;
+    private Toilet toilet;
     private MorePaperLib paperLib;
     private Database database;
     private RedisManager redisManager;
@@ -123,6 +132,7 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
             loadSettings();
             loadLocales();
             loadServer();
+            validateConfigFiles();
         });
 
         this.eventListener = createEventListener();
@@ -132,6 +142,20 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
     @Override
     public void onEnable() {
         this.audiences = BukkitAudiences.create(this);
+        this.toilet = BukkitToilet.create(getDumpOptions());
+
+        // Check compatibility
+        checkCompatibility();
+
+        // Preload NBT-API
+        if (!NBT.preloadApi()) {
+            log(Level.SEVERE, "Failed to load NBT API. HuskSync will not be initialized!");
+            return;
+        }
+
+        // Register commands
+        initialize("commands", (plugin) -> getUniform().register(PluginCommand.Type.create(this)));
+
         // Prepare data adapter
         initialize("data adapter", (plugin) -> {
             if (settings.getSynchronization().isCompressData()) {
@@ -143,19 +167,20 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
 
         // Prepare serializers
         initialize("data serializers", (plugin) -> {
+            registerSerializer(Identifier.PERSISTENT_DATA, new BukkitSerializer.PersistentData(this));
             registerSerializer(Identifier.INVENTORY, new BukkitSerializer.Inventory(this));
             registerSerializer(Identifier.ENDER_CHEST, new BukkitSerializer.EnderChest(this));
             registerSerializer(Identifier.ADVANCEMENTS, new BukkitSerializer.Advancements(this));
-            registerSerializer(Identifier.LOCATION, new BukkitSerializer.Json<>(this, BukkitData.Location.class));
-            registerSerializer(Identifier.HEALTH, new BukkitSerializer.Json<>(this, BukkitData.Health.class));
-            registerSerializer(Identifier.HUNGER, new BukkitSerializer.Json<>(this, BukkitData.Hunger.class));
-            registerSerializer(Identifier.ATTRIBUTES, new BukkitSerializer.Json<>(this, BukkitData.Attributes.class));
-            registerSerializer(Identifier.GAME_MODE, new BukkitSerializer.Json<>(this, BukkitData.GameMode.class));
-            registerSerializer(Identifier.FLIGHT_STATUS, new BukkitSerializer.Json<>(this, BukkitData.FlightStatus.class));
+            registerSerializer(Identifier.STATISTICS, new Serializer.Json<>(this, BukkitData.Statistics.class));
             registerSerializer(Identifier.POTION_EFFECTS, new BukkitSerializer.PotionEffects(this));
-            registerSerializer(Identifier.STATISTICS, new BukkitSerializer.Json<>(this, BukkitData.Statistics.class));
-            registerSerializer(Identifier.EXPERIENCE, new BukkitSerializer.Json<>(this, BukkitData.Experience.class));
-            registerSerializer(Identifier.PERSISTENT_DATA, new BukkitSerializer.PersistentData(this));
+            registerSerializer(Identifier.GAME_MODE, new Serializer.Json<>(this, BukkitData.GameMode.class));
+            registerSerializer(Identifier.FLIGHT_STATUS, new Serializer.Json<>(this, BukkitData.FlightStatus.class));
+            registerSerializer(Identifier.ATTRIBUTES, new Serializer.Json<>(this, BukkitData.Attributes.class));
+            registerSerializer(Identifier.HEALTH, new Serializer.Json<>(this, BukkitData.Health.class));
+            registerSerializer(Identifier.HUNGER, new Serializer.Json<>(this, BukkitData.Hunger.class));
+            registerSerializer(Identifier.EXPERIENCE, new Serializer.Json<>(this, BukkitData.Experience.class));
+            registerSerializer(Identifier.LOCATION, new Serializer.Json<>(this, BukkitData.Location.class));
+            validateDependencies();
         });
 
         // Setup available migrators
@@ -192,9 +217,6 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
         // Register events
         initialize("events", (plugin) -> eventListener.onEnable());
 
-        // Register commands
-        initialize("commands", (plugin) -> BukkitCommand.Type.registerCommands(this));
-
         // Register plugin hooks
         initialize("hooks", (plugin) -> {
             if (isDependencyLoaded("Plan") && getSettings().isEnablePlanHook()) {
@@ -260,6 +282,12 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
         this.dataSyncer = dataSyncer;
     }
 
+    @Override
+    @NotNull
+    public Uniform getUniform() {
+        return BukkitUniform.getInstance(this);
+    }
+
     @NotNull
     @Override
     public Map<Identifier, Data> getPlayerCustomDataStore(@NotNull OnlineUser user) {
@@ -277,7 +305,8 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
 
     @Override
     public boolean isDependencyLoaded(@NotNull String name) {
-        return getServer().getPluginManager().getPlugin(name) != null;
+        final Plugin plugin = getServer().getPluginManager().getPlugin(name);
+        return plugin != null;
     }
 
     // Register bStats metrics
@@ -289,7 +318,7 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
         try {
             new Metrics(this, metricsId);
         } catch (Throwable e) {
-            log(Level.WARNING, "Failed to register bStats metrics (" + e.getMessage() + ")");
+            log(Level.WARNING, "Failed to register bStats metrics (%s)".formatted(e.getMessage()));
         }
     }
 
@@ -320,11 +349,23 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
         return PLATFORM_TYPE_ID;
     }
 
+    @Override
+    @NotNull
+    public String getServerVersion() {
+        return String.format("%s/%s", getServer().getName(), getServer().getVersion());
+    }
+
     @Override
     public Optional<LegacyConverter> getLegacyConverter() {
         return Optional.of(legacyConverter);
     }
 
+    @Override
+    @NotNull
+    public LockedHandler getLockedHandler() {
+        return eventListener.getLockedHandler();
+    }
+
     @NotNull
     public GracefulScheduling getScheduler() {
         return paperLib.scheduling();
@@ -347,11 +388,6 @@ public class BukkitHuskSync extends JavaPlugin implements HuskSync, BukkitTask.S
         return getScheduler().entitySpecificScheduler(((BukkitUser) user).getPlayer());
     }
 
-    @NotNull
-    public CommandRegistration getCommandRegistrar() {
-        return paperLib.commandRegistration();
-    }
-
     @Override
     @NotNull
     public Path getConfigDirectory() {

bukkit/src/main/java/net/william278/husksync/PaperHuskSync.java

@@ -20,14 +20,17 @@
 package net.william278.husksync;
 
 import net.kyori.adventure.audience.Audience;
+import net.william278.desertwell.util.Version;
 import net.william278.husksync.listener.BukkitEventListener;
 import net.william278.husksync.listener.PaperEventListener;
+import net.william278.uniform.Uniform;
+import net.william278.uniform.paper.PaperUniform;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.UUID;
 
-@SuppressWarnings("unused")
+@SuppressWarnings({"unused"})
 public class PaperHuskSync extends BukkitHuskSync {
 
     @NotNull
@@ -43,4 +46,15 @@ public class PaperHuskSync extends BukkitHuskSync {
         return player == null || !player.isOnline() ? Audience.empty() : player;
     }
 
+    @NotNull
+    @Override
+    public Version getMinecraftVersion() {
+        return Version.fromString(getServer().getMinecraftVersion());
+    }
+
+    @Override
+    @NotNull
+    public Uniform getUniform() {
+        return PaperUniform.getInstance(this);
+    }
 }

bukkit/src/main/java/net/william278/husksync/PaperHuskSyncLoader.java

@@ -34,6 +34,7 @@ import org.jetbrains.annotations.Nullable;
 import java.io.InputStream;
 import java.util.List;
 import java.util.Objects;
+import java.util.stream.Stream;
 
 @NoArgsConstructor
 @SuppressWarnings("UnstableApiUsage")
@@ -46,13 +47,20 @@ public class PaperHuskSyncLoader implements PluginLoader {
         resolveLibraries(classpathBuilder).stream()
                 .map(DefaultArtifact::new)
                 .forEach(artifact -> resolver.addDependency(new Dependency(artifact, null)));
-        resolver.addRepository(new RemoteRepository.Builder(
-                "maven", "default", "https://repo.maven.apache.org/maven2/"
-        ).build());
+        resolver.addRepository(new RemoteRepository.Builder("maven", "default", getMavenUrl()).build());
 
         classpathBuilder.addLibrary(resolver);
     }
 
+    @NotNull
+    private static String getMavenUrl() {
+        return Stream.of(
+                System.getenv("PAPER_DEFAULT_CENTRAL_REPOSITORY"),
+                System.getProperty("org.bukkit.plugin.java.LibraryLoader.centralURL"),
+                "https://maven-central.storage-download.googleapis.com/maven2"
+        ).filter(Objects::nonNull).findFirst().orElseThrow(IllegalStateException::new);
+    }
+
     @NotNull
     private static List<String> resolveLibraries(@NotNull PluginClasspathBuilder classpathBuilder) {
         try (InputStream input = getLibraryListFile()) {

bukkit/src/main/java/net/william278/husksync/api/BukkitHuskSyncAPI.java

@@ -28,6 +28,7 @@ import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.user.User;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.plugin.java.JavaPlugin;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 
@@ -59,6 +60,10 @@ public class BukkitHuskSyncAPI extends HuskSyncAPI {
      */
     @NotNull
     public static BukkitHuskSyncAPI getInstance() {
+        if (!JavaPlugin.getProvidingPlugin(BukkitHuskSyncAPI.class).getName().equals("HuskSync")) {
+            throw new NotRegisteredException("This is likely because you have shaded HuskSync into your plugin JAR " +
+                                             "and need to fix your maven/gradle/build script so that it *compiles against* HuskSync instead.");
+        }
         if (instance == null) {
             throw new NotRegisteredException();
         }

bukkit/src/main/java/net/william278/husksync/command/BrigadierUtil.java

@@ -1,60 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.command;
-
-import me.lucko.commodore.CommodoreProvider;
-import me.lucko.commodore.file.CommodoreFileReader;
-import net.william278.husksync.BukkitHuskSync;
-import org.jetbrains.annotations.NotNull;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.logging.Level;
-
-public class BrigadierUtil {
-
-    /**
-     * Uses commodore to register command completions.
-     *
-     * @param plugin        instance of the registering Bukkit plugin
-     * @param bukkitCommand the Bukkit PluginCommand to register completions for
-     * @param command       the {@link Command} to register completions for
-     */
-    protected static void registerCommodore(@NotNull BukkitHuskSync plugin,
-                                            @NotNull org.bukkit.command.Command bukkitCommand,
-                                            @NotNull Command command) {
-        final InputStream commodoreFile = plugin.getResource(
-                "commodore/" + bukkitCommand.getName() + ".commodore"
-        );
-        if (commodoreFile == null) {
-            return;
-        }
-        try {
-            CommodoreProvider.getCommodore(plugin).register(bukkitCommand,
-                    CommodoreFileReader.INSTANCE.parse(commodoreFile),
-                    player -> player.hasPermission(command.getPermission()));
-        } catch (IOException e) {
-            plugin.log(Level.SEVERE, String.format(
-                    "Failed to read command commodore completions for %s", bukkitCommand.getName()), e
-            );
-        }
-    }
-
-}

bukkit/src/main/java/net/william278/husksync/command/BukkitCommand.java

@@ -1,164 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.command;
-
-
-import me.lucko.commodore.CommodoreProvider;
-import net.william278.husksync.BukkitHuskSync;
-import net.william278.husksync.user.BukkitUser;
-import net.william278.husksync.user.CommandUser;
-import org.bukkit.command.CommandSender;
-import org.bukkit.entity.Player;
-import org.bukkit.permissions.Permission;
-import org.bukkit.permissions.PermissionDefault;
-import org.bukkit.plugin.PluginManager;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.*;
-import java.util.function.Function;
-
-public class BukkitCommand extends org.bukkit.command.Command {
-
-    private final BukkitHuskSync plugin;
-    private final Command command;
-
-    public BukkitCommand(@NotNull Command command, @NotNull BukkitHuskSync plugin) {
-        super(command.getName(), command.getDescription(), command.getUsage(), command.getAliases());
-        this.command = command;
-        this.plugin = plugin;
-    }
-
-    @Override
-    public boolean execute(@NotNull CommandSender sender, @NotNull String commandLabel, @NotNull String[] args) {
-        this.command.onExecuted(sender instanceof Player p ? BukkitUser.adapt(p, plugin) : plugin.getConsole(), args);
-        return true;
-    }
-
-    @NotNull
-    @Override
-    public List<String> tabComplete(@NotNull CommandSender sender, @NotNull String alias,
-                                    @NotNull String[] args) throws IllegalArgumentException {
-        if (!(this.command instanceof TabProvider provider)) {
-            return List.of();
-        }
-        final CommandUser user = sender instanceof Player p ? BukkitUser.adapt(p, plugin) : plugin.getConsole();
-        if (getPermission() == null || user.hasPermission(getPermission())) {
-            return provider.getSuggestions(user, args);
-        }
-        return List.of();
-    }
-
-    public void register() {
-        // Register with bukkit
-        plugin.getCommandRegistrar().getServerCommandMap().register("husksync", this);
-
-        // Register permissions
-        BukkitCommand.addPermission(
-                plugin,
-                command.getPermission(),
-                command.getUsage(),
-                BukkitCommand.getPermissionDefault(command.isOperatorCommand())
-        );
-        final List<Permission> childNodes = command.getAdditionalPermissions()
-                .entrySet().stream()
-                .map((entry) -> BukkitCommand.addPermission(
-                        plugin,
-                        entry.getKey(),
-                        "",
-                        BukkitCommand.getPermissionDefault(entry.getValue()))
-                )
-                .filter(Objects::nonNull)
-                .toList();
-        if (!childNodes.isEmpty()) {
-            BukkitCommand.addPermission(
-                    plugin,
-                    command.getPermission("*"),
-                    command.getUsage(),
-                    PermissionDefault.FALSE,
-                    childNodes.toArray(new Permission[0])
-            );
-        }
-
-        // Register commodore TAB completion
-        if (CommodoreProvider.isSupported() && plugin.getSettings().isBrigadierTabCompletion()) {
-            BrigadierUtil.registerCommodore(plugin, this, command);
-        }
-    }
-
-    @Nullable
-    protected static Permission addPermission(@NotNull BukkitHuskSync plugin, @NotNull String node,
-                                              @NotNull String description, @NotNull PermissionDefault permissionDefault,
-                                              @NotNull Permission... children) {
-        final Map<String, Boolean> childNodes = Arrays.stream(children)
-                .map(Permission::getName)
-                .collect(HashMap::new, (map, child) -> map.put(child, true), HashMap::putAll);
-
-        final PluginManager manager = plugin.getServer().getPluginManager();
-        if (manager.getPermission(node) != null) {
-            return null;
-        }
-
-        Permission permission;
-        if (description.isEmpty()) {
-            permission = new Permission(node, permissionDefault, childNodes);
-        } else {
-            permission = new Permission(node, description, permissionDefault, childNodes);
-        }
-        manager.addPermission(permission);
-
-        return permission;
-    }
-
-    @NotNull
-    protected static PermissionDefault getPermissionDefault(boolean isOperatorCommand) {
-        return isOperatorCommand ? PermissionDefault.OP : PermissionDefault.TRUE;
-    }
-
-    /**
-     * Commands available on the Bukkit HuskSync implementation
-     */
-    public enum Type {
-
-        HUSKSYNC_COMMAND(HuskSyncCommand::new),
-        USERDATA_COMMAND(UserDataCommand::new),
-        INVENTORY_COMMAND(InventoryCommand::new),
-        ENDER_CHEST_COMMAND(EnderChestCommand::new);
-
-        public final Function<BukkitHuskSync, Command> commandSupplier;
-
-        Type(@NotNull Function<BukkitHuskSync, Command> supplier) {
-            this.commandSupplier = supplier;
-        }
-
-        @NotNull
-        public Command createCommand(@NotNull BukkitHuskSync plugin) {
-            return commandSupplier.apply(plugin);
-        }
-
-        public static void registerCommands(@NotNull BukkitHuskSync plugin) {
-            Arrays.stream(values())
-                    .map((type) -> type.createCommand(plugin))
-                    .forEach((command) -> new BukkitCommand(command, plugin).register());
-        }
-
-
-    }
-}

bukkit/src/main/java/net/william278/husksync/data/BukkitData.java

@@ -29,24 +29,25 @@ import net.william278.desertwell.util.ThrowingConsumer;
 import net.william278.husksync.BukkitHuskSync;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.adapter.Adaptable;
+import net.william278.husksync.config.Settings.SynchronizationSettings.AttributeSettings;
 import net.william278.husksync.user.BukkitUser;
-import org.bukkit.Bukkit;
-import org.bukkit.Material;
-import org.bukkit.Registry;
-import org.bukkit.Statistic;
+import org.bukkit.*;
 import org.bukkit.advancement.AdvancementProgress;
 import org.bukkit.attribute.AttributeInstance;
 import org.bukkit.attribute.AttributeModifier;
+import org.bukkit.entity.EntityType;
 import org.bukkit.entity.Player;
 import org.bukkit.event.inventory.InventoryType;
-import org.bukkit.inventory.EquipmentSlot;
+import org.bukkit.inventory.EquipmentSlotGroup;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.persistence.PersistentDataContainer;
+import org.bukkit.plugin.Plugin;
 import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.annotations.Range;
+import org.jetbrains.annotations.Unmodifiable;
 
 import java.util.*;
 import java.util.logging.Level;
@@ -69,7 +70,6 @@ public abstract class BukkitData implements Data {
         private final @Nullable ItemStack @NotNull [] contents;
 
         private Items(@Nullable ItemStack @NotNull [] contents) {
-
             this.contents = Arrays.stream(contents.clone())
                     .map(i -> i == null || i.getType() == Material.AIR ? null : i)
                     .toArray(ItemStack[]::new);
@@ -127,8 +127,6 @@ public abstract class BukkitData implements Data {
         @Getter
         public static class Inventory extends BukkitData.Items implements Data.Items.Inventory {
 
-            public static final int INVENTORY_SLOT_COUNT = 41;
-
             @Range(from = 0, to = 8)
             private int heldItemSlot;
 
@@ -158,8 +156,9 @@ public abstract class BukkitData implements Data {
                 this.clearInventoryCraftingSlots(player);
                 player.setItemOnCursor(null);
                 player.getInventory().setContents(plugin.setMapViews(getContents()));
-                player.updateInventory();
                 player.getInventory().setHeldItemSlot(heldItemSlot);
+                //noinspection UnstableApiUsage
+                player.updateInventory();
             }
 
             private void clearInventoryCraftingSlots(@NotNull Player player) {
@@ -175,15 +174,18 @@ public abstract class BukkitData implements Data {
 
         public static class EnderChest extends BukkitData.Items implements Data.Items.EnderChest {
 
-            public static final int ENDER_CHEST_SLOT_COUNT = 27;
-
-            private EnderChest(@NotNull ItemStack[] contents) {
+            private EnderChest(@Nullable ItemStack @NotNull [] contents) {
                 super(contents);
             }
 
             @NotNull
-            public static BukkitData.Items.EnderChest adapt(@NotNull ItemStack[] items) {
-                return new BukkitData.Items.EnderChest(items);
+            public static BukkitData.Items.EnderChest adapt(@Nullable ItemStack @NotNull [] contents) {
+                return new BukkitData.Items.EnderChest(contents);
+            }
+
+            @NotNull
+            public static BukkitData.Items.EnderChest adapt(@NotNull Collection<ItemStack> items) {
+                return adapt(items.toArray(ItemStack[]::new));
             }
 
             @NotNull
@@ -193,14 +195,16 @@ public abstract class BukkitData implements Data {
 
             @Override
             public void apply(@NotNull BukkitUser user, @NotNull BukkitHuskSync plugin) throws IllegalStateException {
-                user.getPlayer().getEnderChest().setContents(plugin.setMapViews(getContents()));
+                ItemStack[] fullContents = plugin.setMapViews(getContents());
+                ItemStack[] enderChestContents = Arrays.copyOf(fullContents, Math.min(fullContents.length, user.getPlayer().getEnderChest().getSize()));
+                user.getPlayer().getEnderChest().setContents(enderChestContents);
             }
 
         }
 
         public static class ItemArray extends BukkitData.Items implements Data.Items {
 
-            private ItemArray(@NotNull ItemStack[] contents) {
+            private ItemArray(@Nullable ItemStack @NotNull [] contents) {
                 super(contents);
             }
 
@@ -210,7 +214,7 @@ public abstract class BukkitData implements Data {
             }
 
             @NotNull
-            public static ItemArray adapt(@NotNull ItemStack[] drops) {
+            public static ItemArray adapt(@Nullable ItemStack @NotNull [] drops) {
                 return new ItemArray(drops);
             }
 
@@ -231,33 +235,33 @@ public abstract class BukkitData implements Data {
         private final Collection<PotionEffect> effects;
 
         @NotNull
-        public static BukkitData.PotionEffects from(@NotNull Collection<PotionEffect> effects) {
-            return new BukkitData.PotionEffects(effects);
+        public static BukkitData.PotionEffects from(@NotNull Collection<PotionEffect> sei) {
+            return new BukkitData.PotionEffects(Lists.newArrayList(sei.stream().filter(e -> !e.isAmbient()).toList()));
+
         }
 
         @NotNull
         public static BukkitData.PotionEffects adapt(@NotNull Collection<Effect> effects) {
-            return from(
-                    effects.stream()
-                            .map(effect -> new PotionEffect(
-                                    Objects.requireNonNull(
-                                            PotionEffectType.getByName(effect.type()),
-                                            "Invalid potion effect type"
-                                    ),
-                                    effect.duration(),
-                                    effect.amplifier(),
-                                    effect.isAmbient(),
-                                    effect.showParticles(),
-                                    effect.hasIcon()
-                            ))
-                            .toList()
-            );
+            return from(effects.stream()
+                    .map(effect -> {
+                        final PotionEffectType type = matchEffectType(effect.type());
+                        return type != null ? new PotionEffect(
+                                type,
+                                effect.duration(),
+                                effect.amplifier(),
+                                effect.isAmbient(),
+                                effect.showParticles(),
+                                effect.hasIcon()
+                        ) : null;
+                    })
+                    .filter(Objects::nonNull)
+                    .toList());
         }
 
         @NotNull
         @SuppressWarnings("unused")
         public static BukkitData.PotionEffects empty() {
-            return new BukkitData.PotionEffects(List.of());
+            return new BukkitData.PotionEffects(Lists.newArrayList());
         }
 
         @Override
@@ -273,10 +277,11 @@ public abstract class BukkitData implements Data {
 
         @NotNull
         @Override
+        @Unmodifiable
         public List<Effect> getActiveEffects() {
             return effects.stream()
                     .map(potionEffect -> new Effect(
-                            potionEffect.getType().getName().toLowerCase(Locale.ENGLISH),
+                            potionEffect.getType().getKey().toString(),
                             potionEffect.getAmplifier(),
                             potionEffect.getDuration(),
                             potionEffect.isAmbient(),
@@ -342,9 +347,12 @@ public abstract class BukkitData implements Data {
             }));
         }
 
-        private void setAdvancement(@NotNull HuskSync plugin, @NotNull org.bukkit.advancement.Advancement advancement,
-                                    @NotNull Player player, @NotNull BukkitUser user,
-                                    @NotNull Collection<String> toAward, @NotNull Collection<String> toRevoke) {
+        private void setAdvancement(@NotNull HuskSync plugin,
+                                    @NotNull org.bukkit.advancement.Advancement advancement,
+                                    @NotNull Player player,
+                                    @NotNull BukkitUser user,
+                                    @NotNull Collection<String> toAward,
+                                    @NotNull Collection<String> toRevoke) {
             plugin.runSync(() -> {
                 // Track player exp level & progress
                 final int expLevel = player.getLevel();
@@ -356,7 +364,8 @@ public abstract class BukkitData implements Data {
                 toRevoke.forEach(progress::revokeCriteria);
 
                 // Set player experience and level (prevent advancement awards applying twice), reset game rule
-                if (!toAward.isEmpty() && player.getLevel() != expLevel || player.getExp() != expProgress) {
+                if (!toAward.isEmpty()
+                        && (player.getLevel() != expLevel || player.getExp() != expProgress)) {
                     player.setLevel(expLevel);
                     player.setExp(expProgress);
                 }
@@ -447,9 +456,10 @@ public abstract class BukkitData implements Data {
             Registry.STATISTIC.forEach(id -> {
                 switch (id.getType()) {
                     case UNTYPED -> addStatistic(player, id, generic);
-                    case BLOCK -> addMaterialStatistic(player, id, blocks, true);
-                    case ITEM -> addMaterialStatistic(player, id, items, false);
-                    case ENTITY -> addEntityStatistic(player, id, entities);
+                    // Todo - Future - Use BLOCK and ITEM registries when API stabilizes
+                    case BLOCK -> addStatistic(player, id, Registry.MATERIAL, blocks);
+                    case ITEM -> addStatistic(player, id, Registry.MATERIAL, items);
+                    case ENTITY -> addStatistic(player, id, Registry.ENTITY_TYPE, entities);
                 }
             });
             return new BukkitData.Statistics(generic, blocks, items, entities);
@@ -470,43 +480,36 @@ public abstract class BukkitData implements Data {
             }
         }
 
-        private static void addMaterialStatistic(@NotNull Player p, @NotNull Statistic id,
-                                                 @NotNull Map<String, Map<String, Integer>> map, boolean isBlock) {
-            Registry.MATERIAL.forEach(material -> {
-                if ((material.isBlock() && !isBlock) || (material.isItem() && isBlock)) {
-                    return;
-                }
-                final int stat = p.getStatistic(id, material);
-                if (stat != 0) {
-                    map.computeIfAbsent(id.getKey().getKey(), k -> Maps.newHashMap())
-                            .put(material.getKey().getKey(), stat);
-                }
-            });
-        }
-
-        private static void addEntityStatistic(@NotNull Player p, @NotNull Statistic id,
-                                               @NotNull Map<String, Map<String, Integer>> map) {
-            Registry.ENTITY_TYPE.forEach(entity -> {
-                if (!entity.isAlive()) {
-                    return;
-                }
-                final int stat = p.getStatistic(id, entity);
-                if (stat != 0) {
-                    map.computeIfAbsent(id.getKey().getKey(), k -> Maps.newHashMap())
-                            .put(entity.getKey().getKey(), stat);
+        private static <R extends Keyed> void addStatistic(@NotNull Player p, @NotNull Statistic id,
+                                                           @NotNull Registry<R> registry,
+                                                           @NotNull Map<String, Map<String, Integer>> map) {
+            registry.forEach(i -> {
+                try {
+                    int stat = 0;
+                    if (i instanceof Material mat && ((id.getType() == Statistic.Type.BLOCK && mat.isBlock())
+                            || (id.getType() == Statistic.Type.ITEM && mat.isItem()))) {
+                        stat = p.getStatistic(id, mat);
+                    } else if (i instanceof EntityType ent && id.getType() == Statistic.Type.ENTITY) {
+                        stat = p.getStatistic(id, ent);
+                    }
+                    if (stat != 0) {
+                        map.compute(id.getKey().getKey(), (k, v) -> v == null ? Maps.newHashMap() : v)
+                                .put(i.getKey().getKey(), stat);
+                    }
+                } catch (IllegalStateException ignored) {
                 }
             });
         }
 
         @Override
-        public void apply(@NotNull BukkitUser user, @NotNull BukkitHuskSync plugin) {
-            genericStatistics.forEach((id, v) -> applyStat(user, id, Statistic.Type.UNTYPED, v));
-            blockStatistics.forEach((id, m) -> m.forEach((b, v) -> applyStat(user, id, Statistic.Type.BLOCK, v, b)));
-            itemStatistics.forEach((id, m) -> m.forEach((i, v) -> applyStat(user, id, Statistic.Type.ITEM, v, i)));
-            entityStatistics.forEach((id, m) -> m.forEach((e, v) -> applyStat(user, id, Statistic.Type.ENTITY, v, e)));
+        public void apply(@NotNull BukkitUser user, @NotNull BukkitHuskSync p) {
+            genericStatistics.forEach((k, v) -> applyStat(p, user, k, Statistic.Type.UNTYPED, v));
+            blockStatistics.forEach((k, m) -> m.forEach((b, v) -> applyStat(p, user, k, Statistic.Type.BLOCK, v, b)));
+            itemStatistics.forEach((k, m) -> m.forEach((i, v) -> applyStat(p, user, k, Statistic.Type.ITEM, v, i)));
+            entityStatistics.forEach((k, m) -> m.forEach((e, v) -> applyStat(p, user, k, Statistic.Type.ENTITY, v, e)));
         }
 
-        private void applyStat(@NotNull UserDataHolder user, @NotNull String id,
+        private void applyStat(@NotNull HuskSync plugin, @NotNull UserDataHolder user, @NotNull String id,
                                @NotNull Statistic.Type type, int value, @NotNull String... key) {
             final Player player = ((BukkitUser) user).getPlayer();
             final Statistic stat = matchStatistic(id);
@@ -517,10 +520,21 @@ public abstract class BukkitData implements Data {
             try {
                 switch (type) {
                     case UNTYPED -> player.setStatistic(stat, value);
-                    case BLOCK, ITEM -> player.setStatistic(stat, Objects.requireNonNull(matchMaterial(key[0])), value);
-                    case ENTITY -> player.setStatistic(stat, Objects.requireNonNull(matchEntityType(key[0])), value);
+                    case BLOCK, ITEM -> {
+                        Material material = matchMaterial(key.length > 0 ? key[0] : null);
+                        if (material != null) {
+                            player.setStatistic(stat, material, value);
+                        }
+                    }
+                    case ENTITY -> {
+                        EntityType entity = matchEntityType(key.length > 0 ? key[0] : null);
+                        if (entity != null) {
+                            player.setStatistic(stat, entity, value);
+                        }
+                    }
                 }
-            } catch (Throwable ignored) {
+            } catch (Throwable a) {
+                plugin.log(Level.WARNING, "Failed to apply statistic " + id, a);
             }
         }
 
@@ -555,21 +569,29 @@ public abstract class BukkitData implements Data {
     @Getter
     @AllArgsConstructor(access = AccessLevel.PRIVATE)
     @NoArgsConstructor(access = AccessLevel.PRIVATE)
+    @SuppressWarnings("UnstableApiUsage")
     public static class Attributes extends BukkitData implements Data.Attributes, Adaptable {
 
         private List<Attribute> attributes;
 
         @NotNull
         public static BukkitData.Attributes adapt(@NotNull Player player, @NotNull HuskSync plugin) {
+            if (!Bukkit.isPrimaryThread()) {
+                try {
+                    return Bukkit.getScheduler().callSyncMethod((Plugin) plugin, () -> adapt(player, plugin)).get();
+                } catch (Exception e) {
+                    throw new IllegalStateException("Failed to adapt attributes on main thread", e);
+                }
+            }
+
             final List<Attribute> attributes = Lists.newArrayList();
+            final AttributeSettings settings = plugin.getSettings().getSynchronization().getAttributes();
             Registry.ATTRIBUTE.forEach(id -> {
                 final AttributeInstance instance = player.getAttribute(id);
-                if (instance == null || instance.getValue() == instance.getDefaultValue() || plugin
-                        .getSettings().getSynchronization().isIgnoredAttribute(id.getKey().toString())) {
-                    // We don't sync unmodified or disabled attributes
-                    return;
+                if (settings.isIgnoredAttribute(id.getKey().toString()) || instance == null) {
+                    return; // We don't sync attributes not marked as to be synced
                 }
-                attributes.add(adapt(instance));
+                attributes.add(adapt(instance, settings));
             });
             return new BukkitData.Attributes(attributes);
         }
@@ -588,47 +610,72 @@ public abstract class BukkitData implements Data {
         }
 
         @NotNull
-        private static Attribute adapt(@NotNull AttributeInstance instance) {
+        private static Attribute adapt(@NotNull AttributeInstance instance, @NotNull AttributeSettings settings) {
             return new Attribute(
                     instance.getAttribute().getKey().toString(),
                     instance.getBaseValue(),
-                    instance.getModifiers().stream().map(BukkitData.Attributes::adapt).collect(Collectors.toSet())
+                    instance.getModifiers().stream()
+                            .filter(modifier -> !settings.isIgnoredModifier(modifier.getName()))
+                            .filter(modifier -> modifier.getSlotGroup() != EquipmentSlotGroup.ANY)
+                            .map(BukkitData.Attributes::adapt).collect(Collectors.toSet())
             );
         }
 
         @NotNull
         private static Modifier adapt(@NotNull AttributeModifier modifier) {
             return new Modifier(
-                    modifier.getUniqueId(),
-                    modifier.getName(),
+                    modifier.getKey().toString(),
                     modifier.getAmount(),
                     modifier.getOperation().ordinal(),
-                    modifier.getSlot() != null ? modifier.getSlot().ordinal() : -1
+                    modifier.getSlotGroup().toString()
             );
         }
 
-        @Override
-        public void apply(@NotNull BukkitUser user, @NotNull BukkitHuskSync plugin) throws IllegalStateException {
-            Registry.ATTRIBUTE.forEach(id -> applyAttribute(user.getPlayer().getAttribute(id), getAttribute(id).orElse(null)));
-        }
-
         private static void applyAttribute(@Nullable AttributeInstance instance, @Nullable Attribute attribute) {
             if (instance == null) {
                 return;
             }
-            instance.setBaseValue(attribute == null ? instance.getDefaultValue() : instance.getBaseValue());
             instance.getModifiers().forEach(instance::removeModifier);
+            instance.setBaseValue(attribute == null ? instance.getValue() : attribute.baseValue());
             if (attribute != null) {
-                attribute.modifiers().forEach(modifier -> instance.addModifier(new AttributeModifier(
-                        modifier.uuid(),
-                        modifier.name(),
-                        modifier.amount(),
-                        AttributeModifier.Operation.values()[modifier.operationType()],
-                        modifier.equipmentSlot() != -1 ? EquipmentSlot.values()[modifier.equipmentSlot()] : null
-                )));
+                attribute.modifiers().stream()
+                        .filter(mod -> instance.getModifiers().stream().map(AttributeModifier::getName)
+                                .noneMatch(n -> n.equals(mod.name())))
+                        .distinct().filter(mod -> !mod.hasUuid())
+                        .forEach(mod -> instance.addModifier(adapt(mod)));
             }
         }
 
+        @NotNull
+        private static AttributeModifier adapt(@NotNull Modifier modifier) {
+            return new AttributeModifier(
+                    Objects.requireNonNull(NamespacedKey.fromString(modifier.name())),
+                    modifier.amount(),
+                    AttributeModifier.Operation.values()[modifier.operation()],
+                    Optional.ofNullable(EquipmentSlotGroup.getByName(modifier.slotGroup())).orElse(EquipmentSlotGroup.ANY)
+            );
+        }
+
+        @Override
+        public void apply(@NotNull BukkitUser user, @NotNull BukkitHuskSync plugin) throws IllegalStateException {
+            if (!Bukkit.isPrimaryThread()) {
+                try {
+                    Bukkit.getScheduler().callSyncMethod(plugin, () -> { this.apply(user, plugin); return null; }).get();
+                    return;
+                } catch (Exception e) {
+                    throw new IllegalStateException("Failed to apply attributes on main thread", e);
+                }
+            }
+
+            final AttributeSettings settings = plugin.getSettings().getSynchronization().getAttributes();
+            Registry.ATTRIBUTE.forEach(id -> {
+                if (settings.isIgnoredAttribute(id.getKey().toString())) {
+                    return;
+                }
+                applyAttribute(user.getPlayer().getAttribute(id), getAttribute(id).orElse(null));
+            });
+        }
+
     }
 
     @Getter
@@ -640,24 +687,38 @@ public abstract class BukkitData implements Data {
         private double health;
         @SerializedName("health_scale")
         private double healthScale;
+        @SerializedName("is_health_scaled")
+        private boolean isHealthScaled;
 
         @NotNull
-        public static BukkitData.Health from(double health, double healthScale) {
-            return new BukkitData.Health(health, healthScale);
+        public static BukkitData.Health from(double health, double scale, boolean isScaled) {
+            return new BukkitData.Health(health, scale, isScaled);
         }
 
+        /**
+         * @deprecated Use {@link #from(double, double, boolean)} instead
+         */
+        @NotNull
+        @Deprecated(since = "3.5.4")
+        public static BukkitData.Health from(double health, double scale) {
+            return from(health, scale, false);
+        }
+
+        /**
+         * @deprecated Use {@link #from(double, double, boolean)} instead
+         */
         @NotNull
         @Deprecated(forRemoval = true, since = "3.5")
-        @SuppressWarnings("unused")
-        public static BukkitData.Health from(double health, double maxHealth, double healthScale) {
-            return from(health, healthScale);
+        public static BukkitData.Health from(double health, @SuppressWarnings("unused") double max, double scale) {
+            return from(health, scale, false);
         }
 
         @NotNull
         public static BukkitData.Health adapt(@NotNull Player player) {
             return from(
                     player.getHealth(),
-                    player.isHealthScaled() ? player.getHealthScale() : 0d
+                    player.getHealthScale(),
+                    player.isHealthScaled()
             );
         }
 
@@ -674,16 +735,12 @@ public abstract class BukkitData implements Data {
             }
 
             // Set health scale
+            double scale = healthScale <= 0 ? player.getMaxHealth() : healthScale;
             try {
-                if (healthScale != 0d) {
-                    player.setHealthScaled(true);
-                    player.setHealthScale(healthScale);
-                } else {
-                    player.setHealthScaled(false);
-                    player.setHealthScale(player.getMaxHealth());
-                }
+                player.setHealthScale(scale);
+                player.setHealthScaled(isHealthScaled);
             } catch (Throwable e) {
-                plugin.log(Level.WARNING, "Error setting %s's health scale to %s".formatted(player.getName(), healthScale), e);
+                plugin.log(Level.WARNING, "Error setting %s's health scale to %s".formatted(player.getName(), scale), e);
             }
         }
 

bukkit/src/main/java/net/william278/husksync/data/BukkitSerializer.java

@@ -29,6 +29,7 @@ import de.tr7zw.changeme.nbtapi.utils.DataFixerUtil;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
 import net.william278.desertwell.util.Version;
+import net.william278.husksync.BukkitHuskSync;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.adapter.Adaptable;
 import net.william278.husksync.api.HuskSyncAPI;
@@ -41,6 +42,8 @@ import org.jetbrains.annotations.Nullable;
 import java.util.List;
 
 import static net.william278.husksync.data.BukkitData.Items.Inventory.INVENTORY_SLOT_COUNT;
+import static net.william278.husksync.data.Data.Items.Inventory.HELD_ITEM_SLOT_TAG;
+import static net.william278.husksync.data.Data.Items.Inventory.ITEMS_TAG;
 
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
 public class BukkitSerializer {
@@ -60,8 +63,6 @@ public class BukkitSerializer {
 
     public static class Inventory extends BukkitSerializer implements Serializer<BukkitData.Items.Inventory>,
             ItemDeserializer {
-        private static final String ITEMS_TAG = "items";
-        private static final String HELD_ITEM_SLOT_TAG = "held_item_slot";
 
         public Inventory(@NotNull HuskSync plugin) {
             super(plugin);
@@ -74,7 +75,7 @@ public class BukkitSerializer {
             final ReadWriteNBT items = root.hasTag(ITEMS_TAG) ? root.getCompound(ITEMS_TAG) : null;
             return BukkitData.Items.Inventory.from(
                     items != null ? getItems(items, dataMcVersion) : new ItemStack[INVENTORY_SLOT_COUNT],
-                    root.getInteger(HELD_ITEM_SLOT_TAG)
+                    root.hasTag(HELD_ITEM_SLOT_TAG) ? root.getInteger(HELD_ITEM_SLOT_TAG) : 0
             );
         }
 
@@ -126,15 +127,15 @@ public class BukkitSerializer {
         @Nullable
         default ItemStack[] getItems(@NotNull ReadWriteNBT tag, @NotNull Version mcVersion) {
             if (mcVersion.compareTo(getPlugin().getMinecraftVersion()) < 0) {
-                return upgradeItemStack((NBTCompound) tag, mcVersion);
+                return upgradeItemStacks((NBTCompound) tag, mcVersion);
             }
             return NBT.itemStackArrayFromNBT(tag);
         }
 
         @NotNull
-        private ItemStack @NotNull [] upgradeItemStack(@NotNull NBTCompound compound, @NotNull Version mcVersion) {
-            final ReadWriteNBTCompoundList items = compound.getCompoundList("items");
-            final ItemStack[] itemStacks = new ItemStack[compound.getInteger("size")];
+        private ItemStack @NotNull [] upgradeItemStacks(@NotNull NBTCompound itemsNbt, @NotNull Version mcVersion) {
+            final ReadWriteNBTCompoundList items = itemsNbt.getCompoundList("items");
+            final ItemStack[] itemStacks = new ItemStack[itemsNbt.getInteger("size")];
             for (int i = 0; i < items.size(); i++) {
                 if (items.get(i) == null) {
                     itemStacks[i] = new ItemStack(Material.AIR);
@@ -152,19 +153,11 @@ public class BukkitSerializer {
         @NotNull
         private ReadWriteNBT upgradeItemData(@NotNull ReadWriteNBT tag, @NotNull Version mcVersion)
                 throws NoSuchFieldException, IllegalAccessException {
-            return DataFixerUtil.fixUpItemData(tag, getDataVersion(mcVersion), DataFixerUtil.getCurrentVersion());
-        }
-
-        private int getDataVersion(@NotNull Version mcVersion) {
-            return switch (mcVersion.toStringWithoutMetadata()) {
-                case "1.16", "1.16.1", "1.16.2", "1.16.3", "1.16.4", "1.16.5" -> DataFixerUtil.VERSION1_16_5;
-                case "1.17", "1.17.1" -> DataFixerUtil.VERSION1_17_1;
-                case "1.18", "1.18.1", "1.18.2" -> DataFixerUtil.VERSION1_18_2;
-                case "1.19", "1.19.1", "1.19.2" -> DataFixerUtil.VERSION1_19_2;
-                case "1.20", "1.20.1", "1.20.2" -> DataFixerUtil.VERSION1_20_2;
-                case "1.20.3", "1.20.4" -> DataFixerUtil.VERSION1_20_4;
-                default -> DataFixerUtil.getCurrentVersion();
-            };
+            return DataFixerUtil.fixUpItemData(
+                    tag,
+                    getPlugin().getDataVersion(mcVersion),
+                    DataFixerUtil.getCurrentVersion()
+            );
         }
 
         @NotNull
@@ -226,7 +219,7 @@ public class BukkitSerializer {
 
         @Override
         public BukkitData.PersistentData deserialize(@NotNull String serialized) throws DeserializationException {
-            return BukkitData.PersistentData.from(new NBTContainer(serialized));
+            return BukkitData.PersistentData.from((NBTContainer) NBT.parseNBT(serialized));
         }
 
         @NotNull
@@ -237,24 +230,19 @@ public class BukkitSerializer {
 
     }
 
-    public static class Json<T extends Data & Adaptable> extends BukkitSerializer implements Serializer<T> {
+    /**
+     * @deprecated Use {@link Serializer.Json} in the common module instead
+     */
+    @Deprecated(since = "2.6")
+    public class Json<T extends Data & Adaptable> extends Serializer.Json<T> {
 
-        private final Class<T> type;
-
-        public Json(@NotNull HuskSync plugin, Class<T> type) {
-            super(plugin);
-            this.type = type;
-        }
-
-        @Override
-        public T deserialize(@NotNull String serialized) throws DeserializationException {
-            return plugin.getDataAdapter().fromJson(serialized, type);
+        public Json(@NotNull HuskSync plugin, @NotNull Class<T> type) {
+            super(plugin, type);
         }
 
         @NotNull
-        @Override
-        public String serialize(@NotNull T element) throws SerializationException {
-            return plugin.getDataAdapter().toJson(element);
+        public BukkitHuskSync getPlugin() {
+            return (BukkitHuskSync) plugin;
         }
 
     }

bukkit/src/main/java/net/william278/husksync/data/BukkitUserDataHolder.java

@@ -20,7 +20,7 @@
 package net.william278.husksync.data;
 
 import net.william278.husksync.BukkitHuskSync;
-import net.william278.husksync.util.BukkitMapPersister;
+import net.william278.husksync.maps.BukkitMapHandler;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.PlayerInventory;
 import org.jetbrains.annotations.NotNull;
@@ -31,7 +31,11 @@ public interface BukkitUserDataHolder extends UserDataHolder {
 
     @Override
     default Optional<? extends Data> getData(@NotNull Identifier id) {
-        if (!id.isCustom()) {
+        if (id.isCustom()) {
+            return Optional.ofNullable(getCustomDataStore().get(id));
+        }
+
+        try {
             return switch (id.getKeyValue()) {
                 case "inventory" -> getInventory();
                 case "ender_chest" -> getEnderChest();
@@ -48,8 +52,10 @@ public interface BukkitUserDataHolder extends UserDataHolder {
                 case "persistent_data" -> getPersistentData();
                 default -> throw new IllegalStateException(String.format("Unexpected data type: %s", id));
             };
+        } catch (Throwable e) {
+            getPlugin().debug("Failed to get data for key: " + id.asMinimalString(), e);
+            return Optional.empty();
         }
-        return Optional.ofNullable(getCustomDataStore().get(id));
     }
 
     @Override
@@ -67,9 +73,9 @@ public interface BukkitUserDataHolder extends UserDataHolder {
                 .isSyncDeadPlayersChangingServer())) {
             return Optional.of(BukkitData.Items.Inventory.empty());
         }
-        final PlayerInventory inventory = getBukkitPlayer().getInventory();
+        final PlayerInventory inventory = getPlayer().getInventory();
         return Optional.of(BukkitData.Items.Inventory.from(
-                getMapPersister().persistLockedMaps(inventory.getContents(), getBukkitPlayer()),
+                getMapPersister().persistLockedMaps(inventory.getContents(), getPlayer()),
                 inventory.getHeldItemSlot()
         ));
     }
@@ -78,83 +84,92 @@ public interface BukkitUserDataHolder extends UserDataHolder {
     @Override
     default Optional<Data.Items.EnderChest> getEnderChest() {
         return Optional.of(BukkitData.Items.EnderChest.adapt(
-                getMapPersister().persistLockedMaps(getBukkitPlayer().getEnderChest().getContents(), getBukkitPlayer())
+                getMapPersister().persistLockedMaps(getPlayer().getEnderChest().getContents(), getPlayer())
         ));
     }
 
     @NotNull
     @Override
     default Optional<Data.PotionEffects> getPotionEffects() {
-        return Optional.of(BukkitData.PotionEffects.from(getBukkitPlayer().getActivePotionEffects()));
+        return Optional.of(BukkitData.PotionEffects.from(getPlayer().getActivePotionEffects()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Advancements> getAdvancements() {
-        return Optional.of(BukkitData.Advancements.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.Advancements.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Location> getLocation() {
-        return Optional.of(BukkitData.Location.adapt(getBukkitPlayer().getLocation()));
+        return Optional.of(BukkitData.Location.adapt(getPlayer().getLocation()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Statistics> getStatistics() {
-        return Optional.of(BukkitData.Statistics.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.Statistics.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Health> getHealth() {
-        return Optional.of(BukkitData.Health.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.Health.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Hunger> getHunger() {
-        return Optional.of(BukkitData.Hunger.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.Hunger.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Attributes> getAttributes() {
-        return Optional.of(BukkitData.Attributes.adapt(getBukkitPlayer(), getPlugin()));
+        return Optional.of(BukkitData.Attributes.adapt(getPlayer(), getPlugin()));
     }
 
     @NotNull
     @Override
     default Optional<Data.Experience> getExperience() {
-        return Optional.of(BukkitData.Experience.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.Experience.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.GameMode> getGameMode() {
-        return Optional.of(BukkitData.GameMode.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.GameMode.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.FlightStatus> getFlightStatus() {
-        return Optional.of(BukkitData.FlightStatus.adapt(getBukkitPlayer()));
+        return Optional.of(BukkitData.FlightStatus.adapt(getPlayer()));
     }
 
     @NotNull
     @Override
     default Optional<Data.PersistentData> getPersistentData() {
-        return Optional.of(BukkitData.PersistentData.adapt(getBukkitPlayer().getPersistentDataContainer()));
+        return Optional.of(BukkitData.PersistentData.adapt(getPlayer().getPersistentDataContainer()));
     }
 
     boolean isDead();
 
     @NotNull
-    Player getBukkitPlayer();
+    Player getPlayer();
+
+    /**
+     * @deprecated Use {@link #getPlayer()} instead
+     */
+    @Deprecated(since = "3.6")
+    @NotNull
+    default Player getBukkitPlayer() {
+        return getPlayer();
+    }
 
     @NotNull
-    default BukkitMapPersister getMapPersister() {
+    default BukkitMapHandler getMapPersister() {
         return (BukkitHuskSync) getPlugin();
     }
 

bukkit/src/main/java/net/william278/husksync/listener/BukkitEventListener.java

@@ -19,6 +19,7 @@
 
 package net.william278.husksync.listener;
 
+import lombok.Getter;
 import net.william278.husksync.BukkitHuskSync;
 import net.william278.husksync.data.BukkitData;
 import net.william278.husksync.user.BukkitUser;
@@ -36,6 +37,7 @@ import org.jetbrains.annotations.NotNull;
 
 import java.util.stream.Collectors;
 
+@Getter
 public class BukkitEventListener extends EventListener implements BukkitJoinEventListener, BukkitQuitEventListener,
         BukkitDeathEventListener, Listener {
 
@@ -133,7 +135,7 @@ public class BukkitEventListener extends EventListener implements BukkitJoinEven
     @EventHandler(ignoreCancelled = true)
     public void onMapInitialize(@NotNull MapInitializeEvent event) {
         if (plugin.getSettings().getSynchronization().isPersistLockedMaps() && event.getMap().isLocked()) {
-            getPlugin().runAsync(() -> ((BukkitHuskSync) plugin).renderMapFromFile(event.getMap()));
+            getPlugin().runAsync(() -> ((BukkitHuskSync) plugin).renderInitializingLockedMap(event.getMap()));
         }
     }
 

bukkit/src/main/java/net/william278/husksync/listener/BukkitLockedEventListener.java

@@ -40,7 +40,6 @@ import org.bukkit.event.player.PlayerInteractEntityEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.Objects;
 import java.util.UUID;
 
 @Getter
@@ -124,7 +123,6 @@ public class BukkitLockedEventListener implements LockedHandler, Listener {
     private void cancelPlayerEvent(@NotNull UUID uuid, @NotNull Cancellable event) {
         if (cancelPlayerEvent(uuid)) {
             event.setCancelled(true);
-            plugin.debug("Cancelled event " + event.getClass().getSimpleName() + " from " + Objects.requireNonNull(plugin.getServer().getPlayer(uuid)).getName());
         }
     }
 

bukkit/src/main/java/net/william278/husksync/listener/BukkitPacketEventsLockedPacketListener.java

@@ -23,6 +23,7 @@ import com.github.retrooper.packetevents.PacketEvents;
 import com.github.retrooper.packetevents.event.PacketListenerAbstract;
 import com.github.retrooper.packetevents.event.PacketListenerPriority;
 import com.github.retrooper.packetevents.event.PacketReceiveEvent;
+import com.github.retrooper.packetevents.event.PacketSendEvent;
 import com.github.retrooper.packetevents.protocol.packettype.PacketType;
 import com.google.common.collect.Sets;
 import io.github.retrooper.packetevents.factory.spigot.SpigotPacketEventsBuilder;
@@ -39,12 +40,11 @@ public class BukkitPacketEventsLockedPacketListener extends BukkitLockedEventLis
     }
 
     @Override
+    @SuppressWarnings("UnstableApiUsage")
     public void onLoad() {
         super.onLoad();
         PacketEvents.setAPI(SpigotPacketEventsBuilder.build(getPlugin()));
-        PacketEvents.getAPI().getSettings().reEncodeByDefault(false)
-                .checkForUpdates(false)
-                .bStats(true);
+        PacketEvents.getAPI().getSettings().reEncodeByDefault(false).checkForUpdates(false);
         PacketEvents.getAPI().load();
     }
 
@@ -60,6 +60,7 @@ public class BukkitPacketEventsLockedPacketListener extends BukkitLockedEventLis
 
         private static final Set<PacketType.Play.Client> ALLOWED_PACKETS = Set.of(
                 PacketType.Play.Client.KEEP_ALIVE, PacketType.Play.Client.PONG, PacketType.Play.Client.PLUGIN_MESSAGE, // Connection packets
+                PacketType.Play.Client.PLAYER_LOADED, PacketType.Play.Client.CLIENT_TICK_END, // Connection packets
                 PacketType.Play.Client.CHAT_MESSAGE, PacketType.Play.Client.CHAT_COMMAND, PacketType.Play.Client.CHAT_SESSION_UPDATE, // Chat / command packets
                 PacketType.Play.Client.PLAYER_POSITION, PacketType.Play.Client.PLAYER_POSITION_AND_ROTATION, PacketType.Play.Client.PLAYER_ROTATION, // Movement packets
                 PacketType.Play.Client.HELD_ITEM_CHANGE, PacketType.Play.Client.ANIMATION, PacketType.Play.Client.TELEPORT_CONFIRM, // Animation packets
@@ -78,7 +79,20 @@ public class BukkitPacketEventsLockedPacketListener extends BukkitLockedEventLis
 
         @Override
         public void onPacketReceive(PacketReceiveEvent event) {
-            if(!(event.getPacketType() instanceof PacketType.Play.Client client)) {
+            if (!(event.getPacketType() instanceof PacketType.Play.Client client)) {
+                return;
+            }
+            if (!CANCEL_PACKETS.contains(client)) {
+                return;
+            }
+            if (listener.cancelPlayerEvent(event.getUser().getUUID())) {
+                event.setCancelled(true);
+            }
+        }
+
+        @Override
+        public void onPacketSend(PacketSendEvent event) {
+            if (!(event.getPacketType() instanceof PacketType.Play.Client client)) {
                 return;
             }
             if (!CANCEL_PACKETS.contains(client)) {

bukkit/src/main/java/net/william278/husksync/listener/BukkitProtocolLibLockedPacketListener.java

@@ -49,7 +49,7 @@ public class BukkitProtocolLibLockedPacketListener extends BukkitLockedEventList
 
     private static class PlayerPacketAdapter extends PacketAdapter {
 
-        // Packets we want the player to still be able to send/receiver to/from the server
+        // Packets we want the player to still be able to send/receiver to/from the server - //todo update 1.21.4
         private static final Set<PacketType> ALLOWED_PACKETS = Set.of(
                 Client.KEEP_ALIVE, Client.PONG, Client.CUSTOM_PAYLOAD, // Connection packets
                 Client.CHAT_COMMAND, Client.CLIENT_COMMAND, Client.CHAT, Client.CHAT_SESSION_UPDATE, // Chat / command packets

bukkit/src/main/java/net/william278/husksync/listener/PaperEventListener.java

@@ -43,6 +43,13 @@ public class PaperEventListener extends BukkitEventListener {
         super(plugin);
     }
 
+    @Override
+    @SuppressWarnings("RedundantMethodOverride")
+    public void onEnable() {
+        getPlugin().getServer().getPluginManager().registerEvents(this, getPlugin());
+        lockedHandler.onEnable();
+    }
+
     @Override
     public void handlePlayerDeath(@NotNull PlayerDeathEvent event) {
         // If the player is locked or the plugin disabling, clear their drops

bukkit/src/main/java/net/william278/husksync/maps/BukkitMapHandler.java

@@ -0,0 +1,620 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.maps;
+
+import com.google.common.collect.Lists;
+import de.tr7zw.changeme.nbtapi.NBT;
+import de.tr7zw.changeme.nbtapi.iface.ReadWriteNBT;
+import de.tr7zw.changeme.nbtapi.iface.ReadableItemNBT;
+import de.tr7zw.changeme.nbtapi.iface.ReadableNBT;
+import net.william278.husksync.BukkitHuskSync;
+import net.william278.husksync.redis.RedisManager;
+import net.william278.mapdataapi.MapBanner;
+import net.william278.mapdataapi.MapData;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.World;
+import org.bukkit.block.Container;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.BlockStateMeta;
+import org.bukkit.inventory.meta.BundleMeta;
+import org.bukkit.inventory.meta.MapMeta;
+import org.bukkit.map.*;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.Blocking;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.awt.*;
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Path;
+import java.util.*;
+import java.util.List;
+import java.util.function.Function;
+import java.util.logging.Level;
+
+public interface BukkitMapHandler {
+
+    // The map used to store HuskSync data in ItemStack NBT
+    String MAP_DATA_KEY = "husksync:persisted_locked_map";
+    // The legacy map key used to store pixel data (3.7.3 and below)
+    String MAP_LEGACY_PIXEL_DATA_KEY = "husksync:canvas_data";
+    // Name of server the map originates from
+    String MAP_ORIGIN_KEY = "origin";
+    // Original map id
+    String MAP_ID_KEY = "id";
+
+    /**
+     * Persist locked maps in an array of {@link ItemStack}s
+     *
+     * @param items            the array of {@link ItemStack}s to persist locked maps in
+     * @param delegateRenderer the player to delegate the rendering of map pixel canvases to
+     * @return the array of {@link ItemStack}s with locked maps persisted to serialized NBT
+     */
+    @NotNull
+    default ItemStack[] persistLockedMaps(@NotNull ItemStack[] items, @NotNull Player delegateRenderer) {
+        if (!getPlugin().getSettings().getSynchronization().isPersistLockedMaps()) {
+            return items;
+        }
+        return forEachMap(items, map -> this.persistMapView(map, delegateRenderer));
+    }
+
+    /**
+     * Apply persisted locked maps to an array of {@link ItemStack}s
+     *
+     * @param items the array of {@link ItemStack}s to apply persisted locked maps to
+     * @return the array of {@link ItemStack}s with persisted locked maps applied
+     */
+    @Nullable
+    default ItemStack @NotNull [] setMapViews(@Nullable ItemStack @NotNull [] items) {
+        if (!getPlugin().getSettings().getSynchronization().isPersistLockedMaps()) {
+            return items;
+        }
+        return forEachMap(items, this::applyMapView);
+    }
+
+    // Perform an operation on each map in an array of ItemStacks
+    @NotNull
+    private ItemStack[] forEachMap(ItemStack[] items, @NotNull Function<ItemStack, ItemStack> function) {
+        for (int i = 0; i < items.length; i++) {
+            final ItemStack item = items[i];
+            if (item == null) {
+                continue;
+            }
+            if (item.getType() == Material.FILLED_MAP && item.hasItemMeta()) {
+                items[i] = function.apply(item);
+            } else if (item.getItemMeta() instanceof BlockStateMeta b && b.getBlockState() instanceof Container box
+                    && !box.getInventory().isEmpty()) {
+                forEachMap(box.getInventory().getContents(), function);
+                b.setBlockState(box);
+                item.setItemMeta(b);
+            } else if (item.getItemMeta() instanceof BundleMeta bundle && bundle.hasItems()) {
+                bundle.setItems(List.of(forEachMap(bundle.getItems().toArray(ItemStack[]::new), function)));
+                item.setItemMeta(bundle);
+            }
+        }
+        return items;
+    }
+
+    @Blocking
+    private void writeMapData(@NotNull String serverName, int mapId, MapData data) {
+        final byte[] dataBytes = getPlugin().getDataAdapter().toBytes(new AdaptableMapData(data));
+        getRedisManager().setMapData(serverName, mapId, dataBytes);
+        getPlugin().getDatabase().saveMapData(serverName, mapId, dataBytes);
+    }
+
+    @Nullable
+    @Blocking
+    private MapData readMapData(@NotNull String serverName, int mapId) {
+        final byte[] readData = fetchMapData(serverName, mapId);
+        if (readData == null) {
+            return null;
+        }
+        return deserializeMapData(readData);
+    }
+
+    @Nullable
+    @Blocking
+    private byte[] fetchMapData(@NotNull String serverName, int mapId) {
+        return fetchMapData(serverName, mapId, true);
+    }
+
+    @Nullable
+    @Blocking
+    private byte[] fetchMapData(@NotNull String serverName, int mapId, boolean doReverseLookup) {
+        // Read from Redis cache
+        final byte[] redisData = getRedisManager().getMapData(serverName, mapId);
+        if (redisData != null) {
+            return redisData;
+        }
+
+        // Read from database and set to Redis
+        final byte[] databaseData = getPlugin().getDatabase().getMapData(serverName, mapId);
+        if (databaseData != null) {
+            getRedisManager().setMapData(serverName, mapId, databaseData);
+            return databaseData;
+        }
+
+        // Otherwise, lookup a reverse map binding
+        if (doReverseLookup) {
+            return fetchReversedMapData(serverName, mapId);
+        }
+        return null;
+    }
+
+    @Nullable
+    private byte[] fetchReversedMapData(@NotNull String serverName, int mapId) {
+        // Lookup binding from Redis cache, then fetch data if found
+        Map.Entry<String, Integer> binding = getRedisManager().getReversedMapBound(serverName, mapId);
+        if (binding != null) {
+            return fetchMapData(binding.getKey(), binding.getValue(), false);
+        }
+
+        // Lookup binding from database, then set to Redis & fetch data if found
+        binding = getPlugin().getDatabase().getMapBinding(serverName, mapId);
+        if (binding != null) {
+            getRedisManager().bindMapIds(binding.getKey(), binding.getValue(), serverName, mapId);
+            return fetchMapData(binding.getKey(), binding.getValue(), false);
+        }
+        return null;
+    }
+
+    @Nullable
+    private MapData deserializeMapData(byte @NotNull [] data) {
+        try {
+            return getPlugin().getDataAdapter().fromBytes(data, AdaptableMapData.class)
+                    .getData(getPlugin().getDataVersion(getPlugin().getMinecraftVersion()));
+        } catch (IOException e) {
+            getPlugin().log(Level.WARNING, "Failed to deserialize map data", e);
+            return null;
+        }
+    }
+
+    // Get the bound map ID
+    private int getBoundMapId(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName) {
+        // Get the map ID from Redis, if set
+        final Optional<Integer> redisId = getRedisManager().getBoundMapId(fromServerName, fromMapId, toServerName);
+        if (redisId.isPresent()) {
+            return redisId.get();
+        }
+
+        // Get from the database; if found, set to Redis
+        final int result = getPlugin().getDatabase().getBoundMapId(fromServerName, fromMapId, toServerName);
+        if (result != -1) {
+            getPlugin().getRedisManager().bindMapIds(fromServerName, fromMapId, toServerName, result);
+        }
+        return result;
+    }
+
+    @NotNull
+    private ItemStack persistMapView(@NotNull ItemStack map, @NotNull Player delegateRenderer) {
+        final MapMeta meta = Objects.requireNonNull((MapMeta) map.getItemMeta());
+        if (!meta.hasMapView()) {
+            return map;
+        }
+        final MapView view = meta.getMapView();
+        if (view == null || view.getWorld() == null || !view.isLocked() || view.isVirtual()) {
+            return map;
+        }
+
+        NBT.modify(map, nbt -> {
+            // Don't save the map's data twice
+            if (nbt.hasTag(MAP_DATA_KEY)) {
+                return;
+            }
+
+            // Render the map
+            final int dataVersion = getPlugin().getDataVersion(getPlugin().getMinecraftVersion());
+            final PersistentMapCanvas canvas = new PersistentMapCanvas(view, dataVersion);
+            for (MapRenderer renderer : view.getRenderers()) {
+                renderer.render(view, canvas, delegateRenderer);
+                getPlugin().debug(String.format("Rendered locked map canvas to view (#%s)", view.getId()));
+            }
+
+            // Persist map data
+            final ReadWriteNBT mapData = nbt.getOrCreateCompound(MAP_DATA_KEY);
+            final String serverName = getPlugin().getServerName();
+            mapData.setString(MAP_ORIGIN_KEY, serverName);
+            mapData.setInteger(MAP_ID_KEY, meta.getMapId());
+            if (readMapData(serverName, meta.getMapId()) == null) {
+                writeMapData(serverName, meta.getMapId(), canvas.extractMapData());
+            }
+            getPlugin().debug(String.format("Saved data for locked map (#%s, server: %s)", view.getId(), serverName));
+        });
+        return map;
+    }
+
+    @SuppressWarnings("deprecation")
+    @NotNull
+    private ItemStack applyMapView(@NotNull ItemStack map) {
+        final MapMeta meta = Objects.requireNonNull((MapMeta) map.getItemMeta());
+        NBT.get(map, nbt -> {
+            if (!nbt.hasTag(MAP_DATA_KEY)) {
+                return;
+            }
+
+            final ReadableNBT mapData = nbt.getCompound(MAP_DATA_KEY);
+            if (mapData == null) {
+                return;
+            }
+
+            // Server the map was originally created on, and the current server. If they match, isOrigin is true.
+            final String originServer = mapData.getString(MAP_ORIGIN_KEY);
+            final String currentServer = getPlugin().getServerName();
+            final boolean isOrigin = currentServer.equals(originServer);
+
+            // Determine the map's ID on its origin server, and the new ID it should be bound to here.
+            // Then, update the map item / data accordingly (re-rendering and caching the map if needed)
+            final int originalId = mapData.getInteger(MAP_ID_KEY);
+            int newId = isOrigin ? originalId : getBoundMapId(originServer, originalId, currentServer);
+            if (newId != -1) {
+                handleBoundMap(meta, nbt, originServer, originalId, newId, isOrigin);
+            } else {
+                handleUnboundMap(meta, nbt, originServer, originalId, currentServer);
+            }
+
+            map.setItemMeta(meta);
+        });
+        return map;
+    }
+
+    private void handleBoundMap(@NotNull MapMeta meta, @NotNull ReadableItemNBT nbt, @NotNull String originServer,
+                                int originalId, int newId, boolean isOrigin) {
+        MapView view = Bukkit.getMap(newId);
+        if (isOrigin && view != null) {
+            meta.setMapView(view);
+            getPlugin().debug("Map ID set to original ID #%s".formatted(newId));
+            return;
+        }
+
+        Optional<MapView> optionalView = getMapView(newId);
+        if (optionalView.isPresent()) {
+            meta.setMapView(optionalView.get());
+            getPlugin().debug("Map ID set to #%s".formatted(newId));
+            return;
+        }
+
+        getPlugin().debug("Deserializing map data from NBT and generating view...");
+        MapData mapData = readMapData(originServer, originalId);
+        if (mapData == null && nbt.hasTag(MAP_LEGACY_PIXEL_DATA_KEY)) {
+            mapData = readLegacyMapItemData(nbt);
+        }
+
+        if (mapData == null) {
+            getPlugin().debug("Read pixel data was not found in database, skipping...");
+            return;
+        }
+
+        MapView newView = view != null ? view : Bukkit.createMap(getDefaultMapWorld());
+        generateRenderedMap(mapData, newView);
+        meta.setMapView(newView);
+    }
+
+    private void handleUnboundMap(@NotNull MapMeta meta, @NotNull ReadableItemNBT nbt, @NotNull String originServer,
+                                  int originalId, @NotNull String currentServer) {
+        getPlugin().debug("Deserializing map data from NBT and generating view...");
+        MapData mapData = readMapData(originServer, originalId);
+        if (mapData == null && nbt.hasTag(MAP_LEGACY_PIXEL_DATA_KEY)) {
+            mapData = readLegacyMapItemData(nbt);
+        }
+
+        if (mapData == null) {
+            getPlugin().debug("Read pixel data was not found in database, skipping...");
+            return;
+        }
+
+        final MapView view = generateRenderedMap(Objects.requireNonNull(mapData, "Pixel data null!"));
+        meta.setMapView(view);
+
+        final int id = view.getId();
+        getRedisManager().bindMapIds(originServer, originalId, currentServer, id);
+        getPlugin().getDatabase().setMapBinding(originServer, originalId, currentServer, id);
+
+        getPlugin().debug("Bound map to view (#%s) on server %s".formatted(id, currentServer));
+    }
+
+    // Render a persisted locked map that is initializing (i.e. in an item frame)
+    default void renderInitializingLockedMap(@NotNull MapView view) {
+        if (view.isVirtual()) {
+            return;
+        }
+        final Optional<MapView> optionalView = getMapView(view.getId());
+        if (optionalView.isPresent()) {
+            view.getRenderers().clear();
+            view.getRenderers().addAll(optionalView.get().getRenderers());
+            view.setLocked(true);
+            view.setScale(MapView.Scale.CLOSEST);
+            view.setTrackingPosition(false);
+            view.setUnlimitedTracking(false);
+            return;
+        }
+
+        MapData data = readMapData(getPlugin().getServerName(), view.getId());
+        if (data == null) {
+            data = readLegacyMapFileData(view.getId());
+        }
+
+        if (data == null) {
+            World world = view.getWorld() == null ? getDefaultMapWorld() : view.getWorld();
+            getPlugin().debug("Not rendering map: no data in DB for world %s, map #%s."
+                    .formatted(world.getName(), view.getId()));
+            return;
+        }
+        renderMapView(view, data);
+    }
+
+    @NotNull
+    private MapView generateRenderedMap(@NotNull MapData canvasData) {
+        return generateRenderedMap(canvasData, Bukkit.createMap(getDefaultMapWorld()));
+    }
+
+    @NotNull
+    private MapView generateRenderedMap(@NotNull MapData canvasData, @NotNull MapView view) {
+        renderMapView(view, canvasData);
+        return view;
+    }
+
+    private void renderMapView(@NotNull MapView view, @NotNull MapData canvasData) {
+        view.getRenderers().clear();
+        view.addRenderer(new PersistentMapRenderer(canvasData));
+        view.setLocked(true);
+        view.setScale(MapView.Scale.CLOSEST);
+        view.setTrackingPosition(false);
+        view.setUnlimitedTracking(false);
+        setMapView(view);
+    }
+
+    @NotNull
+    private static World getDefaultMapWorld() {
+        final World world = Bukkit.getWorlds().get(0);
+        if (world == null) {
+            throw new IllegalStateException("No worlds are loaded on the server!");
+        }
+        return world;
+    }
+
+    default Optional<MapView> getMapView(int id) {
+        return getMapViews().containsKey(id) ? Optional.of(getMapViews().get(id)) : Optional.empty();
+    }
+
+    default void setMapView(@NotNull MapView view) {
+        getMapViews().put(view.getId(), view);
+    }
+
+    /**
+     * A {@link MapRenderer} that can be used to render persistently serialized {@link MapData} to a {@link MapView}
+     */
+    @SuppressWarnings("deprecation")
+    class PersistentMapRenderer extends MapRenderer {
+
+        private final MapData canvasData;
+
+        private PersistentMapRenderer(@NotNull MapData canvasData) {
+            super(false);
+            this.canvasData = canvasData;
+        }
+
+        @Override
+        public void render(@NotNull MapView map, @NotNull MapCanvas canvas, @NotNull Player player) {
+            // We set the pixels in this order to avoid the map being rendered upside down
+            for (int i = 0; i < 128; i++) {
+                for (int j = 0; j < 128; j++) {
+                    canvas.setPixel(j, i, (byte) canvasData.getColorAt(i, j));
+                }
+            }
+
+            // Set the map banners and markers
+            final MapCursorCollection cursors = canvas.getCursors();
+            while (cursors.size() > 0) {
+                cursors.removeCursor(cursors.getCursor(0));
+            }
+
+            canvasData.getBanners().forEach(banner -> cursors.addCursor(createBannerCursor(banner)));
+            canvas.setCursors(cursors);
+        }
+    }
+
+    @NotNull
+    private static MapCursor createBannerCursor(@NotNull MapBanner banner) {
+        return new MapCursor(
+                (byte) banner.getPosition().getX(),
+                (byte) banner.getPosition().getZ(),
+                (byte) 8, // Always rotate banners upright
+                switch (banner.getColor().toLowerCase(Locale.ENGLISH)) {
+                    case "white" -> MapCursor.Type.BANNER_WHITE;
+                    case "orange" -> MapCursor.Type.BANNER_ORANGE;
+                    case "magenta" -> MapCursor.Type.BANNER_MAGENTA;
+                    case "light_blue" -> MapCursor.Type.BANNER_LIGHT_BLUE;
+                    case "yellow" -> MapCursor.Type.BANNER_YELLOW;
+                    case "lime" -> MapCursor.Type.BANNER_LIME;
+                    case "pink" -> MapCursor.Type.BANNER_PINK;
+                    case "gray" -> MapCursor.Type.BANNER_GRAY;
+                    case "light_gray" -> MapCursor.Type.BANNER_LIGHT_GRAY;
+                    case "cyan" -> MapCursor.Type.BANNER_CYAN;
+                    case "purple" -> MapCursor.Type.BANNER_PURPLE;
+                    case "blue" -> MapCursor.Type.BANNER_BLUE;
+                    case "brown" -> MapCursor.Type.BANNER_BROWN;
+                    case "green" -> MapCursor.Type.BANNER_GREEN;
+                    case "red" -> MapCursor.Type.BANNER_RED;
+                    default -> MapCursor.Type.BANNER_BLACK;
+                },
+                true,
+                banner.getText().isEmpty() ? null : banner.getText()
+        );
+    }
+
+    // Legacy - read maps from item stacks
+    @Nullable
+    @Blocking
+    private MapData readLegacyMapItemData(@NotNull ReadableItemNBT nbt) {
+        final int dataVer = getPlugin().getDataVersion(getPlugin().getMinecraftVersion());
+        try {
+            return MapData.fromByteArray(dataVer,
+                    Objects.requireNonNull(nbt.getByteArray(MAP_LEGACY_PIXEL_DATA_KEY)));
+        } catch (IOException e) {
+            getPlugin().log(Level.WARNING, "Failed to read legacy map data", e);
+            return null;
+        }
+    }
+
+    // Legacy - read maps from files
+    @Nullable
+    private MapData readLegacyMapFileData(int mapId) {
+        final Path path = getPlugin().getDataFolder().toPath().resolve("maps").resolve(mapId + ".dat");
+        final File file = path.toFile();
+        if (!file.exists()) {
+            return null;
+        }
+        try {
+            return MapData.fromNbt(file);
+        } catch (IOException e) {
+            getPlugin().log(Level.WARNING, "Failed to read legacy map file", e);
+            return null;
+        }
+    }
+
+    /**
+     * A {@link MapCanvas} implementation used for pre-rendering maps to be converted into {@link MapData}
+     */
+    @SuppressWarnings({"deprecation", "removal"})
+    class PersistentMapCanvas implements MapCanvas {
+
+        private static final String BANNER_PREFIX = "banner_";
+
+        private final int mapDataVersion;
+        private final MapView mapView;
+        private final int[][] pixels = new int[128][128];
+        private MapCursorCollection cursors;
+
+        private PersistentMapCanvas(@NotNull MapView mapView, int mapDataVersion) {
+            this.mapDataVersion = mapDataVersion;
+            this.mapView = mapView;
+        }
+
+        @NotNull
+        @Override
+        public MapView getMapView() {
+            return mapView;
+        }
+
+        @NotNull
+        @Override
+        public MapCursorCollection getCursors() {
+            return cursors == null ? (cursors = new MapCursorCollection()) : cursors;
+        }
+
+        @Override
+        public void setCursors(@NotNull MapCursorCollection cursors) {
+            this.cursors = cursors;
+        }
+
+        @Override
+        @Deprecated
+        public void setPixel(int x, int y, byte color) {
+            pixels[x][y] = color;
+        }
+
+        @Override
+        @Deprecated
+        public byte getPixel(int x, int y) {
+            return (byte) pixels[x][y];
+        }
+
+        @Override
+        @Deprecated
+        public byte getBasePixel(int x, int y) {
+            return (byte) pixels[x][y];
+        }
+
+        @Override
+        public void setPixelColor(int x, int y, @Nullable Color color) {
+            pixels[x][y] = color == null ? -1 : MapPalette.matchColor(color);
+        }
+
+        @Nullable
+        @Override
+        public Color getPixelColor(int x, int y) {
+            return MapPalette.getColor((byte) pixels[x][y]);
+        }
+
+        @NotNull
+        @Override
+        public Color getBasePixelColor(int x, int y) {
+            return MapPalette.getColor((byte) pixels[x][y]);
+        }
+
+        @Override
+        public void drawImage(int x, int y, @NotNull Image image) {
+            // Not implemented
+        }
+
+        @Override
+        public void drawText(int x, int y, @NotNull MapFont font, @NotNull String text) {
+            // Not implemented
+        }
+
+        @NotNull
+        private String getDimension() {
+            return mapView.getWorld() != null ? switch (mapView.getWorld().getEnvironment()) {
+                case NETHER -> "minecraft:the_nether";
+                case THE_END -> "minecraft:the_end";
+                default -> "minecraft:overworld";
+            } : "minecraft:overworld";
+        }
+
+        /**
+         * Extract the map data from the canvas. Must be rendered first
+         *
+         * @return the extracted map data
+         */
+        @NotNull
+        private MapData extractMapData() {
+            final List<MapBanner> banners = Lists.newArrayList();
+            for (int i = 0; i < getCursors().size(); i++) {
+                final MapCursor cursor = getCursors().getCursor(i);
+                final String type = cursor.getType().getKey().getKey();
+                if (type.startsWith(BANNER_PREFIX)) {
+                    banners.add(new MapBanner(
+                            type.replaceAll(BANNER_PREFIX, ""),
+                            cursor.getCaption() == null ? "" : cursor.getCaption(),
+                            cursor.getX(),
+                            mapView.getWorld() != null ? mapView.getWorld().getSeaLevel() : 128,
+                            cursor.getY()
+                    ));
+                }
+
+            }
+            return MapData.fromPixels(mapDataVersion, pixels, getDimension(), (byte) 0, banners, List.of());
+        }
+    }
+
+    @NotNull
+    Map<Integer, MapView> getMapViews();
+
+    @ApiStatus.Internal
+    RedisManager getRedisManager();
+
+    @ApiStatus.Internal
+    @NotNull
+    BukkitHuskSync getPlugin();
+
+}

bukkit/src/main/java/net/william278/husksync/migrator/LegacyMigrator.java

@@ -146,7 +146,7 @@ public class LegacyMigrator extends Migrator {
                     try {
                         plugin.getDatabase().addSnapshot(data.user(), convertedData);
                     } catch (Throwable e) {
-                        plugin.log(Level.SEVERE, "Failed to migrate legacy data for " + data.user().getUsername() + ": " + e.getMessage());
+                        plugin.log(Level.SEVERE, "Failed to migrate legacy data for " + data.user().getName() + ": " + e.getMessage());
                         return;
                     }
 
@@ -204,10 +204,10 @@ public class LegacyMigrator extends Migrator {
             }) {
                 plugin.log(Level.INFO, getHelpMenu());
                 plugin.log(Level.INFO, "Successfully set " + args[0] + " to " +
-                        obfuscateDataString(args[1]));
+                                       obfuscateDataString(args[1]));
             } else {
                 plugin.log(Level.INFO, "Invalid operation, could not set " + args[0] + " to " +
-                        obfuscateDataString(args[1]) + " (is it a valid option?)");
+                                       obfuscateDataString(args[1]) + " (is it a valid option?)");
             }
         } else {
             plugin.log(Level.INFO, getHelpMenu());
@@ -330,7 +330,7 @@ public class LegacyMigrator extends Migrator {
                         ))
 
                         // Health, hunger, experience & game mode
-                        .health(BukkitData.Health.from(health, healthScale))
+                        .health(BukkitData.Health.from(health, healthScale, false))
                         .hunger(BukkitData.Hunger.from(hunger, saturation, saturationExhaustion))
                         .experience(BukkitData.Experience.from(totalExp, expLevel, expProgress))
                         .gameMode(BukkitData.GameMode.from(gameMode))

bukkit/src/main/java/net/william278/husksync/migrator/MpdbMigrator.java

@@ -201,10 +201,10 @@ public class MpdbMigrator extends Migrator {
             }) {
                 plugin.log(Level.INFO, getHelpMenu());
                 plugin.log(Level.INFO, "Successfully set " + args[0] + " to " +
-                        obfuscateDataString(args[1]));
+                                       obfuscateDataString(args[1]));
             } else {
                 plugin.log(Level.INFO, "Invalid operation, could not set " + args[0] + " to " +
-                        obfuscateDataString(args[1]) + " (is it a valid option?)");
+                                       obfuscateDataString(args[1]) + " (is it a valid option?)");
             }
         } else {
             plugin.log(Level.INFO, getHelpMenu());
@@ -255,7 +255,7 @@ public class MpdbMigrator extends Migrator {
                 If any of these are not correct, please correct them
                 using the command:
                 "husksync migrate mpdb set <parameter> <value>"
-                (e.g.: "husksync migrate mpdb set host 1.2.3.4")
+                (e.g.: "husksync migrate set mpdb host 1.2.3.4")
 
                 STEP 3] HuskSync will migrate data into the database
                 tables configures in the config.yml file of this
@@ -263,7 +263,7 @@ public class MpdbMigrator extends Migrator {
                 before proceeding.
 
                 STEP 4] To start the migration, please run:
-                "husksync migrate mpdb start"
+                "husksync migrate start mpdb"
                 
                 NOTE: This migrator currently WORKS WITH MPDB version
                 v4.9.2 and below!

bukkit/src/main/java/net/william278/husksync/user/BukkitUser.java

@@ -23,14 +23,10 @@ import de.themoep.minedown.adventure.MineDown;
 import dev.triumphteam.gui.builder.gui.StorageBuilder;
 import dev.triumphteam.gui.guis.Gui;
 import dev.triumphteam.gui.guis.StorageGui;
-import net.roxeez.advancement.display.FrameType;
-import net.william278.andjam.Toast;
-import net.william278.husksync.BukkitHuskSync;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.BukkitData;
 import net.william278.husksync.data.BukkitUserDataHolder;
 import net.william278.husksync.data.Data;
-import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.ApiStatus;
@@ -40,8 +36,6 @@ import java.util.Arrays;
 import java.util.function.Consumer;
 import java.util.logging.Level;
 
-import static net.william278.husksync.util.BukkitKeyedAdapter.matchMaterial;
-
 /**
  * Bukkit platform implementation of an {@link OnlineUser}
  */
@@ -62,37 +56,19 @@ public class BukkitUser extends OnlineUser implements BukkitUserDataHolder {
         return new BukkitUser(player, plugin);
     }
 
-    /**
-     * Get the Bukkit {@link Player} instance of this user
-     *
-     * @return the {@link Player} instance
-     * @since 3.0
-     */
-    @NotNull
-    public Player getPlayer() {
-        return player;
-    }
-
-    @Override
-    public boolean isOffline() {
-        return player == null || !player.isOnline();
+    @Override
+    public boolean hasDisconnected() {
+        return getPlugin().getDisconnectingPlayers().contains(getUuid())
+                || player == null || !player.isOnline();
     }
 
     @Override
+    @Deprecated(since = "3.6.7")
     public void sendToast(@NotNull MineDown title, @NotNull MineDown description,
                           @NotNull String iconMaterial, @NotNull String backgroundType) {
-        try {
-            final Material material = matchMaterial(iconMaterial);
-            Toast.builder((BukkitHuskSync) plugin)
-                    .setTitle(title.toComponent())
-                    .setDescription(description.toComponent())
-                    .setIcon(material != null ? material : Material.BARRIER)
-                    .setFrameType(FrameType.valueOf(backgroundType))
-                    .build()
-                    .show(player);
-        } catch (Throwable e) {
-            plugin.log(Level.WARNING, "Failed to send toast to player " + player.getName(), e);
-        }
+        plugin.log(Level.WARNING, "Toast notifications are deprecated. " +
+                                  "Please change your notification display slot to CHAT, ACTION_BAR or NONE.");
+        this.sendActionBar(title);
     }
 
     @Override
@@ -103,7 +79,7 @@ public class BukkitUser extends OnlineUser implements BukkitUserDataHolder {
         if (!editable) {
             builder.disableAllInteractions();
         }
-        final StorageGui gui = builder.enableOtherActions()
+        final StorageGui gui = builder
                 .apply(a -> a.getInventory().setContents(contents))
                 .title(title.toComponent()).create();
         gui.setCloseGuiAction((close) -> onClose.accept(BukkitData.Items.ItemArray.adapt(
@@ -132,9 +108,14 @@ public class BukkitUser extends OnlineUser implements BukkitUserDataHolder {
         return player.hasMetadata("NPC");
     }
 
+    /**
+     * Get the Bukkit {@link Player} instance of this user
+     *
+     * @return the {@link Player} instance
+     * @since 3.6
+     */
     @NotNull
-    @Override
-    public Player getBukkitPlayer() {
+    public Player getPlayer() {
         return player;
     }
 

bukkit/src/main/java/net/william278/husksync/util/BukkitKeyedAdapter.java

@@ -22,6 +22,7 @@ package net.william278.husksync.util;
 import org.bukkit.*;
 import org.bukkit.attribute.Attribute;
 import org.bukkit.entity.EntityType;
+import org.bukkit.potion.PotionEffectType;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -48,6 +49,11 @@ public final class BukkitKeyedAdapter {
         return getRegistryValue(Registry.ATTRIBUTE, key);
     }
 
+    @Nullable
+    public static PotionEffectType matchEffectType(@NotNull String key) {
+        return getRegistryValue(Registry.EFFECT, key);
+    }
+
     private static <T extends Keyed> T getRegistryValue(@NotNull Registry<T> registry, @NotNull String keyString) {
         final NamespacedKey key = NamespacedKey.fromString(keyString);
         return key != null ? registry.get(key) : null;

bukkit/src/main/java/net/william278/husksync/util/BukkitLegacyConverter.java

@@ -82,32 +82,33 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
         final JSONObject status = object.getJSONObject("status_data");
         final HashMap<Identifier, Data> containers = Maps.newHashMap();
-        if (shouldImport(Identifier.HEALTH)) {
+        if (Identifier.HEALTH.isEnabled()) {
             containers.put(Identifier.HEALTH, BukkitData.Health.from(
                     status.getDouble("health"),
-                    status.getDouble("health_scale")
+                    status.getDouble("health_scale"),
+                    false
             ));
         }
-        if (shouldImport(Identifier.HUNGER)) {
+        if (Identifier.HUNGER.isEnabled()) {
             containers.put(Identifier.HUNGER, BukkitData.Hunger.from(
                     status.getInt("hunger"),
                     status.getFloat("saturation"),
                     status.getFloat("saturation_exhaustion")
             ));
         }
-        if (shouldImport(Identifier.EXPERIENCE)) {
+        if (Identifier.EXPERIENCE.isEnabled()) {
             containers.put(Identifier.EXPERIENCE, BukkitData.Experience.from(
                     status.getInt("total_experience"),
                     status.getInt("experience_level"),
                     status.getFloat("experience_progress")
             ));
         }
-        if (shouldImport(Identifier.GAME_MODE)) {
+        if (Identifier.GAME_MODE.isEnabled()) {
             containers.put(Identifier.GAME_MODE, BukkitData.GameMode.from(
                     status.getString("game_mode")
             ));
         }
-        if (shouldImport(Identifier.FLIGHT_STATUS)) {
+        if (Identifier.FLIGHT_STATUS.isEnabled()) {
             containers.put(Identifier.FLIGHT_STATUS, BukkitData.FlightStatus.from(
                     status.getBoolean("is_flying"),
                     status.getBoolean("is_flying")
@@ -118,7 +119,7 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
     @NotNull
     private Optional<Data.Items.Inventory> readInventory(@NotNull JSONObject object) {
-        if (!object.has("inventory") || !shouldImport(Identifier.INVENTORY)) {
+        if (!object.has("inventory") || !Identifier.INVENTORY.isEnabled()) {
             return Optional.empty();
         }
 
@@ -130,7 +131,7 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
     @NotNull
     private Optional<Data.Items.EnderChest> readEnderChest(@NotNull JSONObject object) {
-        if (!object.has("ender_chest") || !shouldImport(Identifier.ENDER_CHEST)) {
+        if (!object.has("ender_chest") || !Identifier.ENDER_CHEST.isEnabled()) {
             return Optional.empty();
         }
 
@@ -142,7 +143,7 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
     @NotNull
     private Optional<Data.Location> readLocation(@NotNull JSONObject object) {
-        if (!object.has("location") || !shouldImport(Identifier.LOCATION)) {
+        if (!object.has("location") || !Identifier.LOCATION.isEnabled()) {
             return Optional.empty();
         }
 
@@ -163,7 +164,7 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
     @NotNull
     private Optional<Data.Advancements> readAdvancements(@NotNull JSONObject object) {
-        if (!object.has("advancements") || !shouldImport(Identifier.ADVANCEMENTS)) {
+        if (!object.has("advancements") || !Identifier.ADVANCEMENTS.isEnabled()) {
             return Optional.empty();
         }
 
@@ -186,7 +187,7 @@ public class BukkitLegacyConverter extends LegacyConverter {
 
     @NotNull
     private Optional<Data.Statistics> readStatistics(@NotNull JSONObject object) {
-        if (!object.has("statistics") || !shouldImport(Identifier.STATISTICS)) {
+        if (!object.has("statistics") || !Identifier.STATISTICS.isEnabled()) {
             return Optional.empty();
         }
 
@@ -280,11 +281,6 @@ public class BukkitLegacyConverter extends LegacyConverter {
         return serializedItemStack != null ? ItemStack.deserialize((Map<String, Object>) serializedItemStack) : null;
     }
 
-
-    private boolean shouldImport(@NotNull Identifier type) {
-        return plugin.getSettings().getSynchronization().isFeatureEnabled(type);
-    }
-
     @NotNull
     private Date parseDate(@NotNull String dateString) {
         try {

bukkit/src/main/java/net/william278/husksync/util/BukkitMapPersister.java

@@ -1,447 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.util;
-
-import com.google.common.collect.Lists;
-import de.tr7zw.changeme.nbtapi.NBT;
-import de.tr7zw.changeme.nbtapi.iface.ReadWriteNBT;
-import de.tr7zw.changeme.nbtapi.iface.ReadableNBT;
-import net.querz.nbt.io.NBTUtil;
-import net.querz.nbt.tag.CompoundTag;
-import net.william278.husksync.BukkitHuskSync;
-import net.william278.mapdataapi.MapBanner;
-import net.william278.mapdataapi.MapData;
-import org.bukkit.Bukkit;
-import org.bukkit.Material;
-import org.bukkit.World;
-import org.bukkit.entity.Player;
-import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.meta.MapMeta;
-import org.bukkit.map.*;
-import org.jetbrains.annotations.ApiStatus;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.awt.*;
-import java.io.File;
-import java.util.List;
-import java.util.*;
-import java.util.function.Function;
-import java.util.logging.Level;
-
-public interface BukkitMapPersister {
-
-    // The map used to store HuskSync data in ItemStack NBT
-    String MAP_DATA_KEY = "husksync:persisted_locked_map";
-    // The key used to store the serialized map data in NBT
-    String MAP_PIXEL_DATA_KEY = "canvas_data";
-    // The key used to store the map of World UIDs to MapView IDs in NBT
-    String MAP_VIEW_ID_MAPPINGS_KEY = "id_mappings";
-
-    /**
-     * Persist locked maps in an array of {@link ItemStack}s
-     *
-     * @param items            the array of {@link ItemStack}s to persist locked maps in
-     * @param delegateRenderer the player to delegate the rendering of map pixel canvases to
-     * @return the array of {@link ItemStack}s with locked maps persisted to serialized NBT
-     */
-    @NotNull
-    default ItemStack[] persistLockedMaps(@NotNull ItemStack[] items, @NotNull Player delegateRenderer) {
-        if (!getPlugin().getSettings().getSynchronization().isPersistLockedMaps()) {
-            return items;
-        }
-        return forEachMap(items, map -> this.persistMapView(map, delegateRenderer));
-    }
-
-    /**
-     * Apply persisted locked maps to an array of {@link ItemStack}s
-     *
-     * @param items the array of {@link ItemStack}s to apply persisted locked maps to
-     * @return the array of {@link ItemStack}s with persisted locked maps applied
-     */
-    @Nullable
-    default ItemStack @NotNull [] setMapViews(@Nullable ItemStack @NotNull [] items) {
-        if (!getPlugin().getSettings().getSynchronization().isPersistLockedMaps()) {
-            return items;
-        }
-        return forEachMap(items, this::applyMapView);
-    }
-
-    // Perform an operation on each map in an array of ItemStacks
-    @NotNull
-    private ItemStack[] forEachMap(ItemStack[] items, @NotNull Function<ItemStack, ItemStack> function) {
-        for (int i = 0; i < items.length; i++) {
-            final ItemStack item = items[i];
-            if (item == null) {
-                continue;
-            }
-            if (item.getType() == Material.FILLED_MAP && item.hasItemMeta()) {
-                items[i] = function.apply(item);
-            }
-        }
-        return items;
-    }
-
-    @NotNull
-    private ItemStack persistMapView(@NotNull ItemStack map, @NotNull Player delegateRenderer) {
-        final MapMeta meta = Objects.requireNonNull((MapMeta) map.getItemMeta());
-        if (!meta.hasMapView()) {
-            return map;
-        }
-        final MapView view = meta.getMapView();
-        if (view == null || view.getWorld() == null || !view.isLocked() || view.isVirtual()) {
-            return map;
-        }
-
-        NBT.modify(map, nbt -> {
-            // Don't save the map's data twice
-            if (nbt.hasTag(MAP_DATA_KEY)) {
-                return;
-            }
-
-            // Render the map
-            final PersistentMapCanvas canvas = new PersistentMapCanvas(view);
-            for (MapRenderer renderer : view.getRenderers()) {
-                renderer.render(view, canvas, delegateRenderer);
-                getPlugin().debug(String.format("Rendered locked map canvas to view (#%s)", view.getId()));
-            }
-
-            // Persist map data
-            final ReadWriteNBT mapData = nbt.getOrCreateCompound(MAP_DATA_KEY);
-            final String worldUid = view.getWorld().getUID().toString();
-            mapData.setByteArray(MAP_PIXEL_DATA_KEY, canvas.extractMapData().toBytes());
-            nbt.getOrCreateCompound(MAP_VIEW_ID_MAPPINGS_KEY).setInteger(worldUid, view.getId());
-            getPlugin().debug(String.format("Saved data for locked map (#%s, UID: %s)", view.getId(), worldUid));
-        });
-        return map;
-    }
-
-    @NotNull
-    private ItemStack applyMapView(@NotNull ItemStack map) {
-        final MapMeta meta = Objects.requireNonNull((MapMeta) map.getItemMeta());
-        NBT.get(map, nbt -> {
-            if (!nbt.hasTag(MAP_DATA_KEY)) {
-                return;
-            }
-            final ReadableNBT mapData = nbt.getCompound(MAP_DATA_KEY);
-            final ReadableNBT mapIds = nbt.getCompound(MAP_VIEW_ID_MAPPINGS_KEY);
-            if (mapData == null || mapIds == null) {
-                return;
-            }
-
-            // Search for an existing map view
-            Optional<String> world = Optional.empty();
-            for (String worldUid : mapIds.getKeys()) {
-                world = getPlugin().getServer().getWorlds().stream()
-                        .map(w -> w.getUID().toString()).filter(u -> u.equals(worldUid))
-                        .findFirst();
-                if (world.isPresent()) {
-                    break;
-                }
-            }
-            if (world.isPresent()) {
-                final String uid = world.get();
-                final Optional<MapView> existingView = this.getMapView(mapIds.getInteger(uid));
-                if (existingView.isPresent()) {
-                    final MapView view = existingView.get();
-                    view.setLocked(true);
-                    meta.setMapView(view);
-                    map.setItemMeta(meta);
-                    getPlugin().debug(String.format("View exists (#%s); updated map (UID: %s)", view.getId(), uid));
-                    return;
-                }
-            }
-
-            // Read the pixel data and generate a map view otherwise
-            final MapData canvasData;
-            try {
-                getPlugin().debug("Deserializing map data from NBT and generating view...");
-                canvasData = MapData.fromByteArray(Objects.requireNonNull(mapData.getByteArray(MAP_PIXEL_DATA_KEY),
-                        "Map pixel data is null"));
-            } catch (Throwable e) {
-                getPlugin().log(Level.WARNING, "Failed to deserialize map data from NBT", e);
-                return;
-            }
-
-            // Add a renderer to the map with the data and save to file
-            final MapView view = generateRenderedMap(canvasData);
-            final String worldUid = getDefaultMapWorld().getUID().toString();
-            meta.setMapView(view);
-            map.setItemMeta(meta);
-            saveMapToFile(canvasData, view.getId());
-
-            // Set the map view ID in NBT
-            NBT.modify(map, editable -> {
-                Objects.requireNonNull(editable.getCompound(MAP_VIEW_ID_MAPPINGS_KEY),
-                                "Map view ID mappings compound is null")
-                        .setInteger(worldUid, view.getId());
-            });
-            getPlugin().debug(String.format("Generated view (#%s) and updated map (UID: %s)", view.getId(), worldUid));
-        });
-        return map;
-    }
-
-    default void renderMapFromFile(@NotNull MapView view) {
-        final File mapFile = new File(getMapCacheFolder(), view.getId() + ".dat");
-        if (!mapFile.exists()) {
-            return;
-        }
-
-        final MapData canvasData;
-        try {
-            canvasData = MapData.fromNbt(mapFile);
-        } catch (Throwable e) {
-            getPlugin().log(Level.WARNING, "Failed to deserialize map data from file", e);
-            return;
-        }
-
-        // Create a new map view renderer with the map data color at each pixel
-        // use view.removeRenderer() to remove all this maps renderers
-        view.getRenderers().forEach(view::removeRenderer);
-        view.addRenderer(new PersistentMapRenderer(canvasData));
-        view.setLocked(true);
-        view.setScale(MapView.Scale.NORMAL);
-        view.setTrackingPosition(false);
-        view.setUnlimitedTracking(false);
-
-        // Set the view to the map
-        setMapView(view);
-    }
-
-    default void saveMapToFile(@NotNull MapData data, int id) {
-        getPlugin().runAsync(() -> {
-            final File mapFile = new File(getMapCacheFolder(), id + ".dat");
-            if (mapFile.exists()) {
-                return;
-            }
-
-            try {
-                final CompoundTag rootTag = new CompoundTag();
-                rootTag.put("data", data.toNBT().getTag());
-                NBTUtil.write(rootTag, mapFile);
-            } catch (Throwable e) {
-                getPlugin().log(Level.WARNING, "Failed to serialize map data to file", e);
-            }
-        });
-    }
-
-    @NotNull
-    private File getMapCacheFolder() {
-        final File mapCache = new File(getPlugin().getDataFolder(), "maps");
-        if (!mapCache.exists() && !mapCache.mkdirs()) {
-            getPlugin().log(Level.WARNING, "Failed to create maps folder");
-        }
-        return mapCache;
-    }
-
-    // Sets the renderer of a map, and returns the generated MapView
-    @NotNull
-    private MapView generateRenderedMap(@NotNull MapData canvasData) {
-        final MapView view = Bukkit.createMap(getDefaultMapWorld());
-        view.getRenderers().clear();
-
-        // Create a new map view renderer with the map data color at each pixel
-        view.addRenderer(new PersistentMapRenderer(canvasData));
-        view.setLocked(true);
-        view.setScale(MapView.Scale.NORMAL);
-        view.setTrackingPosition(false);
-        view.setUnlimitedTracking(false);
-
-        // Set the view to the map and return it
-        setMapView(view);
-        return view;
-    }
-
-    @NotNull
-    private static World getDefaultMapWorld() {
-        final World world = Bukkit.getWorlds().get(0);
-        if (world == null) {
-            throw new IllegalStateException("No worlds are loaded on the server!");
-        }
-        return world;
-    }
-
-    default Optional<MapView> getMapView(int id) {
-        return getMapViews().containsKey(id) ? Optional.of(getMapViews().get(id)) : Optional.empty();
-    }
-
-    default void setMapView(@NotNull MapView view) {
-        getMapViews().put(view.getId(), view);
-    }
-
-    /**
-     * A {@link MapRenderer} that can be used to render persistently serialized {@link MapData} to a {@link MapView}
-     */
-    class PersistentMapRenderer extends MapRenderer {
-
-        private final MapData canvasData;
-
-        private PersistentMapRenderer(@NotNull MapData canvasData) {
-            super(false);
-            this.canvasData = canvasData;
-        }
-
-        @Override
-        public void render(@NotNull MapView map, @NotNull MapCanvas canvas, @NotNull Player player) {
-            // We set the pixels in this order to avoid the map being rendered upside down
-            for (int i = 0; i < 128; i++) {
-                for (int j = 0; j < 128; j++) {
-                    canvas.setPixel(j, i, (byte) canvasData.getColorAt(i, j));
-                }
-            }
-
-            // Set the map banners and markers
-            final MapCursorCollection cursors = canvas.getCursors();
-            while (cursors.size() > 0) {
-                cursors.removeCursor(cursors.getCursor(0));
-            }
-
-            canvasData.getBanners().forEach(banner -> cursors.addCursor(createBannerCursor(banner)));
-            canvas.setCursors(cursors);
-        }
-    }
-
-    @NotNull
-    private static MapCursor createBannerCursor(@NotNull MapBanner banner) {
-        return new MapCursor(
-                (byte) banner.getPosition().getX(),
-                (byte) banner.getPosition().getZ(),
-                (byte) 8, // Always rotate banners upright
-                switch (banner.getColor().toLowerCase(Locale.ENGLISH)) {
-                    case "white" -> MapCursor.Type.BANNER_WHITE;
-                    case "orange" -> MapCursor.Type.BANNER_ORANGE;
-                    case "magenta" -> MapCursor.Type.BANNER_MAGENTA;
-                    case "light_blue" -> MapCursor.Type.BANNER_LIGHT_BLUE;
-                    case "yellow" -> MapCursor.Type.BANNER_YELLOW;
-                    case "lime" -> MapCursor.Type.BANNER_LIME;
-                    case "pink" -> MapCursor.Type.BANNER_PINK;
-                    case "gray" -> MapCursor.Type.BANNER_GRAY;
-                    case "light_gray" -> MapCursor.Type.BANNER_LIGHT_GRAY;
-                    case "cyan" -> MapCursor.Type.BANNER_CYAN;
-                    case "purple" -> MapCursor.Type.BANNER_PURPLE;
-                    case "blue" -> MapCursor.Type.BANNER_BLUE;
-                    case "brown" -> MapCursor.Type.BANNER_BROWN;
-                    case "green" -> MapCursor.Type.BANNER_GREEN;
-                    case "red" -> MapCursor.Type.BANNER_RED;
-                    default -> MapCursor.Type.BANNER_BLACK;
-                },
-                true,
-                banner.getText().isEmpty() ? null : banner.getText()
-        );
-    }
-
-    /**
-     * A {@link MapCanvas} implementation used for pre-rendering maps to be converted into {@link MapData}
-     */
-    class PersistentMapCanvas implements MapCanvas {
-
-        private final MapView mapView;
-        private final int[][] pixels = new int[128][128];
-        private MapCursorCollection cursors;
-
-        private PersistentMapCanvas(@NotNull MapView mapView) {
-            this.mapView = mapView;
-        }
-
-        @NotNull
-        @Override
-        public MapView getMapView() {
-            return mapView;
-        }
-
-        @NotNull
-        @Override
-        public MapCursorCollection getCursors() {
-            return cursors == null ? (cursors = new MapCursorCollection()) : cursors;
-        }
-
-        @Override
-        public void setCursors(@NotNull MapCursorCollection cursors) {
-            this.cursors = cursors;
-        }
-
-        @Override
-        public void setPixel(int x, int y, byte color) {
-            pixels[x][y] = color;
-        }
-
-        @Override
-        public byte getPixel(int x, int y) {
-            return (byte) pixels[x][y];
-        }
-
-        @Override
-        public byte getBasePixel(int x, int y) {
-            return getPixel(x, y);
-        }
-
-        @Override
-        public void drawImage(int x, int y, @NotNull Image image) {
-            // Not implemented
-        }
-
-        @Override
-        public void drawText(int x, int y, @NotNull MapFont font, @NotNull String text) {
-            // Not implemented
-        }
-
-        @NotNull
-        private String getDimension() {
-            return mapView.getWorld() != null ? switch (mapView.getWorld().getEnvironment()) {
-                case NETHER -> "minecraft:the_nether";
-                case THE_END -> "minecraft:the_end";
-                default -> "minecraft:overworld";
-            } : "minecraft:overworld";
-        }
-
-        /**
-         * Extract the map data from the canvas. Must be rendered first
-         *
-         * @return the extracted map data
-         */
-        @NotNull
-        private MapData extractMapData() {
-            final List<MapBanner> banners = Lists.newArrayList();
-            final String BANNER_PREFIX = "banner_";
-            for (int i = 0; i < getCursors().size(); i++) {
-                final MapCursor cursor = getCursors().getCursor(i);
-                final String type = cursor.getType().name().toLowerCase(Locale.ENGLISH);
-                if (type.startsWith(BANNER_PREFIX)) {
-                    banners.add(new MapBanner(
-                            type.replaceAll(BANNER_PREFIX, ""),
-                            cursor.getCaption() == null ? "" : cursor.getCaption(),
-                            cursor.getX(),
-                            mapView.getWorld() != null ? mapView.getWorld().getSeaLevel() : 128,
-                            cursor.getY()
-                    ));
-                }
-            }
-            return MapData.fromPixels(pixels, getDimension(), (byte) 2, banners, List.of());
-        }
-    }
-
-    @NotNull
-    Map<Integer, MapView> getMapViews();
-
-    @ApiStatus.Internal
-    @NotNull
-    BukkitHuskSync getPlugin();
-
-}

bukkit/src/main/resources/commodore/enderchest.commodore

@@ -1,3 +0,0 @@
-inventory {
-  name brigadier:string single_word;
-}

bukkit/src/main/resources/commodore/husksync.commodore

@@ -1,6 +0,0 @@
-husksync {
-  update;
-  about;
-  status;
-  reload;
-}

bukkit/src/main/resources/commodore/inventory.commodore

@@ -1,3 +0,0 @@
-enderchest {
-  name brigadier:string single_word;
-}

bukkit/src/main/resources/commodore/userdata.commodore

@@ -1,35 +0,0 @@
-userdata {
-  view {
-    name brigadier:string single_word {
-      version brigadier:string single_word;
-    }
-  }
-  list {
-    name brigadier:string single_word {
-      page brigadier:integer;
-    }
-  }
-  delete {
-    name brigadier:string single_word {
-      version brigadier:string single_word;
-    }
-  }
-  restore {
-    name brigadier:string single_word {
-      version brigadier:string single_word;
-    }
-  }
-  pin {
-    name brigadier:string single_word {
-      version brigadier:string single_word;
-    }
-  }
-  dump {
-    name brigadier:string single_word {
-      version brigadier:string single_word {
-        web;
-        file;
-      }
-    }
-  }
-}

bukkit/src/main/resources/compatibility.yml

@@ -0,0 +1,2 @@
+# File used for checking Minecraft server compatibility with this version of HuskSync
+minecraft_version_range: '${minecraft_version_range}'

bukkit/src/main/resources/paper-plugin.yml

@@ -5,7 +5,7 @@ website: 'https://william278.net/'
 main: 'net.william278.husksync.PaperHuskSync'
 loader: 'net.william278.husksync.PaperHuskSyncLoader'
 version: '${version}'
-api-version: '1.19'
+api-version: '${minecraft_api_version}'
 folia-supported: true
 dependencies:
   server:

bukkit/src/main/resources/plugin.yml

@@ -1,7 +1,7 @@
 name: 'HuskSync'
 version: '${version}'
 main: 'net.william278.husksync.BukkitHuskSync'
-api-version: 1.17
+api-version: '${minecraft_api_version}'
 author: 'William278'
 description: '${description}'
 website: 'https://william278.net'

common/build.gradle

@@ -3,25 +3,31 @@ plugins {
 }
 
 dependencies {
-    api 'commons-io:commons-io:2.16.1'
-    api 'org.apache.commons:commons-text:1.12.0'
+    api 'commons-io:commons-io:2.21.0'
+    api 'org.apache.commons:commons-text:1.14.0'
     api 'net.william278:minedown:1.8.2'
-    api 'org.json:json:20240303'
-    api 'com.google.code.gson:gson:2.11.0'
+    api 'net.william278:mapdataapi:2.0'
+    api 'org.json:json:20250517'
+    api 'com.google.code.gson:gson:2.13.2'
     api 'com.fatboyindustrial.gson-javatime-serialisers:gson-javatime-serialisers:1.1.2'
-    api 'de.exlll:configlib-yaml:4.5.0'
+    api 'de.exlll:configlib-yaml:4.6.4'
     api 'net.william278:paginedown:1.1.2'
     api 'net.william278:DesertWell:2.0.4'
-    api('com.zaxxer:HikariCP:5.1.0') {
+    api('com.zaxxer:HikariCP:7.0.2') {
         exclude module: 'slf4j-api'
     }
 
-    compileOnly 'org.projectlombok:lombok:1.18.32'
-    compileOnly 'org.jetbrains:annotations:24.1.0'
-    compileOnly 'net.kyori:adventure-api:4.17.0'
-    compileOnly 'net.kyori:adventure-platform-api:4.3.2'
-    compileOnly 'com.google.guava:guava:33.2.0-jre'
-    compileOnly 'com.github.plan-player-analytics:Plan:5.5.2272'
+    compileOnlyApi 'net.william278.toilet:toilet-common:1.0.16'
+
+    compileOnly 'net.william278.uniform:uniform-common:1.3.9'
+    compileOnly 'com.mojang:brigadier:1.1.8'
+    compileOnly 'org.projectlombok:lombok:1.18.42'
+    compileOnly 'org.jetbrains:annotations:26.0.2-1'
+    compileOnly 'net.kyori:adventure-api:4.25.0'
+    compileOnly 'net.kyori:adventure-platform-api:4.4.0'
+    compileOnly "net.kyori:adventure-text-serializer-plain:4.25.0"
+    compileOnly 'com.google.guava:guava:33.5.0-jre'
+    compileOnly 'com.github.plan-player-analytics:Plan:5.6.2965'
     compileOnly "redis.clients:jedis:$jedis_version"
     compileOnly "com.mysql:mysql-connector-j:$mysql_driver_version"
     compileOnly "org.mariadb.jdbc:mariadb-java-client:$mariadb_driver_version"
@@ -31,10 +37,10 @@ dependencies {
 
     testImplementation "redis.clients:jedis:$jedis_version"
     testImplementation "org.xerial.snappy:snappy-java:$snappy_version"
-    testImplementation 'com.google.guava:guava:33.2.0-jre'
-    testImplementation 'com.github.plan-player-analytics:Plan:5.5.2272'
-    testCompileOnly 'de.exlll:configlib-yaml:4.5.0'
-    testCompileOnly 'org.jetbrains:annotations:24.1.0'
+    testImplementation 'com.google.guava:guava:33.5.0-jre'
+    testImplementation 'com.github.plan-player-analytics:Plan:5.6.2965'
+    testCompileOnly 'de.exlll:configlib-yaml:4.6.4'
+    testCompileOnly 'org.jetbrains:annotations:26.0.2-1'
 
-    annotationProcessor 'org.projectlombok:lombok:1.18.32'
+    annotationProcessor 'org.projectlombok:lombok:1.18.42'
 }

common/src/main/java/net/william278/husksync/HuskSync.java

@@ -20,6 +20,7 @@
 package net.william278.husksync;
 
 import com.fatboyindustrial.gsonjavatime.Converters;
+import com.google.common.collect.Maps;
 import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import net.kyori.adventure.audience.Audience;
@@ -31,19 +32,19 @@ import net.william278.husksync.adapter.DataAdapter;
 import net.william278.husksync.config.ConfigProvider;
 import net.william278.husksync.data.Data;
 import net.william278.husksync.data.Identifier;
-import net.william278.husksync.data.Serializer;
+import net.william278.husksync.data.SerializerRegistry;
 import net.william278.husksync.database.Database;
 import net.william278.husksync.event.EventDispatcher;
+import net.william278.husksync.listener.LockedHandler;
 import net.william278.husksync.migrator.Migrator;
 import net.william278.husksync.redis.RedisManager;
 import net.william278.husksync.sync.DataSyncer;
 import net.william278.husksync.user.ConsoleUser;
 import net.william278.husksync.user.OnlineUser;
-import net.william278.husksync.util.LegacyConverter;
-import net.william278.husksync.util.Task;
+import net.william278.husksync.util.*;
+import net.william278.uniform.Uniform;
 import org.jetbrains.annotations.NotNull;
 
-import java.io.File;
 import java.io.InputStream;
 import java.text.SimpleDateFormat;
 import java.util.*;
@@ -52,7 +53,8 @@ import java.util.logging.Level;
 /**
  * Abstract implementation of the HuskSync plugin.
  */
-public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider {
+public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider, SerializerRegistry,
+        CompatibilityChecker, DumpProvider, DataVersionSupplier {
 
     int SPIGOT_RESOURCE_ID = 97144;
 
@@ -86,7 +88,6 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
      *
      * @return the {@link RedisManager} implementation
      */
-
     @NotNull
     RedisManager getRedisManager();
 
@@ -98,43 +99,6 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
     @NotNull
     DataAdapter getDataAdapter();
 
-    /**
-     * Returns the data serializer for the given {@link Identifier}
-     */
-    @NotNull
-    <T extends Data> Map<Identifier, Serializer<T>> getSerializers();
-
-    /**
-     * Register a data serializer for the given {@link Identifier}
-     *
-     * @param identifier the {@link Identifier}
-     * @param serializer the {@link Serializer}
-     */
-    default void registerSerializer(@NotNull Identifier identifier,
-                                    @NotNull Serializer<? extends Data> serializer) {
-        if (identifier.isCustom()) {
-            log(Level.INFO, String.format("Registered custom data type: %s", identifier));
-        }
-        getSerializers().put(identifier, (Serializer<Data>) serializer);
-    }
-
-    /**
-     * Get the {@link Identifier} for the given key
-     */
-    default Optional<Identifier> getIdentifier(@NotNull String key) {
-        return getSerializers().keySet().stream().filter(identifier -> identifier.toString().equals(key)).findFirst();
-    }
-
-    /**
-     * Get the set of registered data types
-     *
-     * @return the set of registered data types
-     */
-    @NotNull
-    default Set<Identifier> getRegisteredDataTypes() {
-        return getSerializers().keySet();
-    }
-
     /**
      * Returns the data syncer implementation
      *
@@ -150,6 +114,14 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
      */
     void setDataSyncer(@NotNull DataSyncer dataSyncer);
 
+    /**
+     * Get the uniform command provider
+     *
+     * @return the command provider
+     */
+    @NotNull
+    Uniform getUniform();
+
     /**
      * Returns a list of available data {@link Migrator}s
      *
@@ -159,7 +131,17 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
     List<Migrator> getAvailableMigrators();
 
     @NotNull
-    Map<Identifier, Data> getPlayerCustomDataStore(@NotNull OnlineUser user);
+    Map<UUID, Map<Identifier, Data>> getPlayerCustomDataStore();
+
+    @NotNull
+    default Map<Identifier, Data> getPlayerCustomDataStore(@NotNull OnlineUser user) {
+        if (getPlayerCustomDataStore().containsKey(user.getUuid())) {
+            return getPlayerCustomDataStore().get(user.getUuid());
+        }
+        final Map<Identifier, Data> data = Maps.newHashMap();
+        getPlayerCustomDataStore().put(user.getUuid(), data);
+        return data;
+    }
 
     /**
      * Initialize a faucet of the plugin.
@@ -193,14 +175,6 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
      */
     InputStream getResource(@NotNull String name);
 
-    /**
-     * Returns the plugin data folder
-     *
-     * @return the plugin data folder as a {@link File}
-     */
-    @NotNull
-    File getDataFolder();
-
     /**
      * Log a message to the console
      *
@@ -283,6 +257,14 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
     @NotNull
     String getPlatformType();
 
+    /**
+     * Returns the server software version
+     *
+     * @return the server software version string
+     */
+    @NotNull
+    String getServerVersion();
+
     /**
      * Returns the legacy data converter if it exists
      *
@@ -312,6 +294,9 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
         }
     }
 
+    @NotNull
+    LockedHandler getLockedHandler();
+
     /**
      * Get the set of UUIDs of "locked players", for which events will be canceled.
      * </p>
@@ -320,6 +305,12 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
     @NotNull
     Set<UUID> getLockedPlayers();
 
+    /**
+     * Get the set of UUIDs of players who are currently marked as disconnecting or disconnected
+     */
+    @NotNull
+    Set<UUID> getDisconnectingPlayers();
+
     default boolean isLocked(@NotNull UUID uuid) {
         return getLockedPlayers().contains(uuid);
     }
@@ -358,7 +349,11 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
                 
                 Caused by: %s""";
 
-        FailedToLoadException(@NotNull String message, @NotNull Throwable cause) {
+        public FailedToLoadException(@NotNull String message) {
+            super(String.format(FORMAT, message));
+        }
+
+        public FailedToLoadException(@NotNull String message, @NotNull Throwable cause) {
             super(String.format(FORMAT, message), cause);
         }
 

common/src/main/java/net/william278/husksync/adapter/GsonAdapter.java

@@ -49,7 +49,7 @@ public class GsonAdapter implements DataAdapter {
 
     @Override
     @NotNull
-    public <A extends Adaptable> A fromBytes(@NotNull byte[] data, @NotNull Class<A> type) throws AdaptionException {
+    public <A extends Adaptable> A fromBytes(byte[] data, @NotNull Class<A> type) throws AdaptionException {
         return this.fromJson(new String(data, StandardCharsets.UTF_8), type);
     }
 

common/src/main/java/net/william278/husksync/adapter/SnappyGsonAdapter.java

@@ -31,7 +31,6 @@ public class SnappyGsonAdapter extends GsonAdapter {
         super(plugin);
     }
 
-    @NotNull
     @Override
     public <A extends Adaptable> byte[] toBytes(@NotNull A data) throws AdaptionException {
         try {
@@ -43,7 +42,7 @@ public class SnappyGsonAdapter extends GsonAdapter {
 
     @NotNull
     @Override
-    public <A extends Adaptable> A fromBytes(@NotNull byte[] data, @NotNull Class<A> type) throws AdaptionException {
+    public <A extends Adaptable> A fromBytes(byte[] data, @NotNull Class<A> type) throws AdaptionException {
         try {
             return super.fromBytes(decompressBytes(data), type);
         } catch (IOException e) {

common/src/main/java/net/william278/husksync/api/HuskSyncAPI.java

@@ -99,6 +99,18 @@ public class HuskSyncAPI {
         return plugin.supplyAsync(() -> plugin.getDatabase().getUser(uuid));
     }
 
+    /**
+     * Get an {@link OnlineUser} by their UUID
+     *
+     * @param uuid the UUID of the user to get
+     * @return The {@link OnlineUser} wrapped in an optional, if they are online on <i>this</i> server.
+     * @since 3.7.2
+     */
+    @NotNull
+    public Optional<OnlineUser> getOnlineUser(@NotNull UUID uuid) {
+        return plugin.getOnlineUser(uuid);
+    }
+
     /**
      * Get a {@link User} by their username
      *
@@ -137,7 +149,7 @@ public class HuskSyncAPI {
      */
     public CompletableFuture<Optional<DataSnapshot.Unpacked>> getCurrentData(@NotNull User user) {
         return plugin.getRedisManager()
-                .getUserData(UUID.randomUUID(), user)
+                .getOnlineUserData(UUID.randomUUID(), user, DataSnapshot.SaveCause.API)
                 .thenApply(data -> data.or(() -> plugin.getDatabase().getLatestSnapshot(user)))
                 .thenApply(data -> data.map(snapshot -> snapshot.unpack(plugin)));
     }
@@ -378,6 +390,17 @@ public class HuskSyncAPI {
         plugin.registerSerializer(identifier, serializer);
     }
 
+    /**
+     * Get a registered data serializer by its identifier
+     *
+     * @param identifier The identifier of the data type to get the serializer for
+     * @return The serializer for the given identifier, or an empty optional if the serializer isn't registered
+     * @since 3.5.4
+     */
+    public Optional<Serializer<Data>> getDataSerializer(@NotNull Identifier identifier) {
+        return plugin.getSerializer(identifier);
+    }
+
     /**
      * Get a {@link DataSnapshot.Unpacked} from a {@link DataSnapshot.Packed}
      *
@@ -500,17 +523,19 @@ public class HuskSyncAPI {
      */
     static final class NotRegisteredException extends IllegalStateException {
 
-        private static final String MESSAGE = """
-                Could not access the HuskSync API as it has not yet been registered. This could be because:
+        private static final String REASONS = """
+                This may be because:
                 1) HuskSync has failed to enable successfully
                 2) Your plugin isn't set to load after HuskSync has
                    (Check if it set as a (soft)depend in plugin.yml or to load: BEFORE in paper-plugin.yml?)
-                3) You are attempting to access HuskSync on plugin construction/before your plugin has enabled.
-                4) You have shaded HuskSync into your plugin jar and need to fix your maven/gradle/build script
-                   to only include HuskSync as a dependency and not as a shaded dependency.""";
+                3) You are attempting to access HuskSync on plugin construction/before your plugin has enabled.""";
+
+        NotRegisteredException(@NotNull String reasons) {
+            super("Could not access the HuskSync API as it has not yet been registered. %s".formatted(reasons));
+        }
 
         NotRegisteredException() {
-            super(MESSAGE);
+            this(REASONS);
         }
 
     }

common/src/main/java/net/william278/husksync/command/Command.java

@@ -1,84 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.command;
-
-import com.google.common.collect.Maps;
-import net.william278.husksync.HuskSync;
-import net.william278.husksync.user.CommandUser;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.List;
-import java.util.Map;
-
-public abstract class Command extends Node {
-
-    private final String usage;
-    private final Map<String, Boolean> additionalPermissions;
-
-    protected Command(@NotNull String name, @NotNull List<String> aliases, @NotNull String usage,
-                      @NotNull HuskSync plugin) {
-        super(name, aliases, plugin);
-        this.usage = usage;
-        this.additionalPermissions = Maps.newHashMap();
-    }
-
-    @Override
-    public final void onExecuted(@NotNull CommandUser executor, @NotNull String[] args) {
-        if (!executor.hasPermission(getPermission())) {
-            plugin.getLocales().getLocale("error_no_permission")
-                    .ifPresent(executor::sendMessage);
-            return;
-        }
-        plugin.runAsync(() -> this.execute(executor, args));
-    }
-
-    public abstract void execute(@NotNull CommandUser executor, @NotNull String[] args);
-
-    @NotNull
-    public final String getRawUsage() {
-        return usage;
-    }
-
-    @NotNull
-    public final String getUsage() {
-        return "/" + getName() + " " + getRawUsage();
-    }
-
-    public final void addAdditionalPermissions(@NotNull Map<String, Boolean> permissions) {
-        permissions.forEach((permission, value) -> this.additionalPermissions.put(getPermission(permission), value));
-    }
-
-    @NotNull
-    public final Map<String, Boolean> getAdditionalPermissions() {
-        return additionalPermissions;
-    }
-
-    @NotNull
-    public String getDescription() {
-        return plugin.getLocales().getRawLocale(getName() + "_command_description")
-                .orElse(getUsage());
-    }
-
-    @NotNull
-    public final HuskSync getPlugin() {
-        return plugin;
-    }
-
-}

common/src/main/java/net/william278/husksync/command/EnderChestCommand.java

@@ -23,7 +23,6 @@ import de.themoep.minedown.adventure.MineDown;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.Data;
 import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.redis.RedisKeyType;
 import net.william278.husksync.redis.RedisManager;
 import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.user.User;
@@ -37,7 +36,7 @@ import java.util.Optional;
 public class EnderChestCommand extends ItemsCommand {
 
     public EnderChestCommand(@NotNull HuskSync plugin) {
-        super(plugin, List.of("enderchest", "echest", "openechest"));
+        super("enderchest", List.of("echest", "openechest"), DataSnapshot.SaveCause.ENDERCHEST_COMMAND, plugin);
     }
 
     @Override
@@ -51,7 +50,7 @@ public class EnderChestCommand extends ItemsCommand {
         }
 
         // Display opening message
-        plugin.getLocales().getLocale("ender_chest_viewer_opened", user.getUsername(),
+        plugin.getLocales().getLocale("ender_chest_viewer_opened", user.getName(),
                         snapshot.getTimestamp().format(DateTimeFormatter
                                 .ofLocalizedDateTime(FormatStyle.MEDIUM, FormatStyle.SHORT)))
                 .ifPresent(viewer::sendMessage);
@@ -60,8 +59,8 @@ public class EnderChestCommand extends ItemsCommand {
         final Data.Items.EnderChest enderChest = optionalEnderChest.get();
         viewer.showGui(
                 enderChest,
-                plugin.getLocales().getLocale("ender_chest_viewer_menu_title", user.getUsername())
-                        .orElse(new MineDown(String.format("%s's Ender Chest", user.getUsername()))),
+                plugin.getLocales().getLocale("ender_chest_viewer_menu_title", user.getName())
+                        .orElse(new MineDown(String.format("%s's Ender Chest", user.getName()))),
                 allowEdit,
                 enderChest.getSlotCount(),
                 (itemsOnClose) -> {
@@ -84,18 +83,17 @@ public class EnderChestCommand extends ItemsCommand {
 
         // Create and pack the snapshot with the updated enderChest
         final DataSnapshot.Packed snapshot = latestData.get().copy();
+        boolean pin = plugin.getSettings().getSynchronization().doAutoPin(saveCause);
         snapshot.edit(plugin, (data) -> {
             data.getEnderChest().ifPresent(enderChest -> enderChest.setContents(items));
-            data.setSaveCause(DataSnapshot.SaveCause.ENDERCHEST_COMMAND);
-            data.setPinned(
-                    plugin.getSettings().getSynchronization().doAutoPin(DataSnapshot.SaveCause.ENDERCHEST_COMMAND)
-            );
+            data.setSaveCause(saveCause);
+            data.setPinned(pin);
         });
 
         // Save data
         final RedisManager redis = plugin.getRedisManager();
         plugin.getDataSyncer().saveData(holder, snapshot, (user, data) -> {
-            redis.getUserData(user).ifPresent(d -> redis.setUserData(user, snapshot, RedisKeyType.TTL_1_YEAR));
+            redis.getUserData(user).ifPresent(d -> redis.setUserData(user, snapshot));
             redis.sendUserDataUpdate(user, data);
         });
     }

common/src/main/java/net/william278/husksync/command/HuskSyncCommand.java

@@ -19,45 +19,44 @@
 
 package net.william278.husksync.command;
 
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import de.themoep.minedown.adventure.MineDown;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.JoinConfiguration;
-import net.kyori.adventure.text.event.HoverEvent;
+import net.kyori.adventure.text.event.ClickEvent;
 import net.kyori.adventure.text.format.NamedTextColor;
 import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.format.TextDecoration;
 import net.william278.desertwell.about.AboutMenu;
 import net.william278.desertwell.util.UpdateChecker;
 import net.william278.husksync.HuskSync;
+import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.database.Database;
 import net.william278.husksync.migrator.Migrator;
 import net.william278.husksync.user.CommandUser;
-import net.william278.husksync.user.OnlineUser;
-import org.apache.commons.text.WordUtils;
+import net.william278.husksync.util.LegacyConverter;
+import net.william278.husksync.util.StatusLine;
+import net.william278.uniform.BaseCommand;
+import net.william278.uniform.CommandProvider;
+import net.william278.uniform.Permission;
+import net.william278.uniform.element.ArgumentElement;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
-import java.util.*;
-import java.util.function.Function;
+import java.time.OffsetDateTime;
+import java.util.Arrays;
+import java.util.List;
+import java.util.UUID;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
 
-public class HuskSyncCommand extends Command implements TabProvider {
-
-    private static final Map<String, Boolean> SUB_COMMANDS = Map.of(
-            "about", false,
-            "status", true,
-            "reload", true,
-            "migrate", true,
-            "update", true
-    );
+public class HuskSyncCommand extends PluginCommand {
 
     private final UpdateChecker updateChecker;
     private final AboutMenu aboutMenu;
 
     public HuskSyncCommand(@NotNull HuskSync plugin) {
-        super("husksync", List.of(), "[" + String.join("|", SUB_COMMANDS.keySet()) + "]", plugin);
-        addAdditionalPermissions(SUB_COMMANDS);
-
+        super("husksync", List.of(), Permission.Default.TRUE, ExecutionScope.ALL, plugin);
         this.updateChecker = plugin.getUpdateChecker();
         this.aboutMenu = AboutMenu.builder()
                 .title(Component.text("HuskSync"))
@@ -68,7 +67,10 @@ public class HuskSyncCommand extends Command implements TabProvider {
                 .credits("Contributors",
                         AboutMenu.Credit.of("HarvelsX").description("Code"),
                         AboutMenu.Credit.of("HookWoods").description("Code"),
-                        AboutMenu.Credit.of("Preva1l").description("Code"))
+                        AboutMenu.Credit.of("Preva1l").description("Code"),
+                        AboutMenu.Credit.of("hanbings").description("Code (Fabric porting)"),
+                        AboutMenu.Credit.of("Stampede2011").description("Code (Fabric mixins)"),
+                        AboutMenu.Credit.of("VinerDream").description("Code"))
                 .credits("Translators",
                         AboutMenu.Credit.of("Namiu").description("Japanese (ja-jp)"),
                         AboutMenu.Credit.of("anchelthe").description("Spanish (es-es)"),
@@ -93,189 +95,165 @@ public class HuskSyncCommand extends Command implements TabProvider {
     }
 
     @Override
-    public void execute(@NotNull CommandUser executor, @NotNull String[] args) {
-        final String subCommand = parseStringArg(args, 0).orElse("about").toLowerCase(Locale.ENGLISH);
-        if (SUB_COMMANDS.containsKey(subCommand) && !executor.hasPermission(getPermission(subCommand))) {
-            plugin.getLocales().getLocale("error_no_permission")
-                    .ifPresent(executor::sendMessage);
-            return;
-        }
-
-        switch (subCommand) {
-            case "about" -> executor.sendMessage(aboutMenu.toComponent());
-            case "status" -> {
-                getPlugin().getLocales().getLocale("system_status_header").ifPresent(executor::sendMessage);
-                executor.sendMessage(Component.join(
-                        JoinConfiguration.newlines(),
-                        Arrays.stream(StatusLine.values()).map(s -> s.get(plugin)).toList()
-                ));
-            }
-            case "reload" -> {
-                try {
-                    plugin.loadSettings();
-                    plugin.loadLocales();
-                    plugin.loadServer();
-                    plugin.getLocales().getLocale("reload_complete").ifPresent(executor::sendMessage);
-                } catch (Throwable e) {
-                    executor.sendMessage(new MineDown(
-                            "[Error:](#ff3300) [Failed to reload the plugin. Check console for errors.](#ff7e5e)"
-                    ));
-                    plugin.log(Level.SEVERE, "Failed to reload the plugin", e);
-                }
-            }
-            case "migrate" -> {
-                if (executor instanceof OnlineUser) {
-                    plugin.getLocales().getLocale("error_console_command_only")
-                            .ifPresent(executor::sendMessage);
-                    return;
-                }
-                this.handleMigrationCommand(args);
-            }
-            case "update" -> updateChecker.check().thenAccept(checked -> {
-                if (checked.isUpToDate()) {
-                    plugin.getLocales().getLocale("up_to_date", plugin.getPluginVersion().toString())
-                            .ifPresent(executor::sendMessage);
-                    return;
-                }
-                plugin.getLocales().getLocale("update_available", checked.getLatestVersion().toString(),
-                        plugin.getPluginVersion().toString()).ifPresent(executor::sendMessage);
-            });
-            default -> plugin.getLocales().getLocale("error_invalid_syntax", getUsage())
-                    .ifPresent(executor::sendMessage);
-        }
+    public void provide(@NotNull BaseCommand<?> command) {
+        command.setDefaultExecutor((ctx) -> about(command, ctx));
+        command.addSubCommand("about", (sub) -> sub.setDefaultExecutor((ctx) -> about(command, ctx)));
+        command.addSubCommand("status", needsOp("status"), status());
+        command.addSubCommand("dump", needsOp("dump"), dump());
+        command.addSubCommand("reload", needsOp("reload"), reload());
+        command.addSubCommand("update", needsOp("update"), update());
+        command.addSubCommand("forceupgrade", forceUpgrade());
+        command.addSubCommand("migrate", migrate());
     }
 
-    // Handle a migration console command input
-    private void handleMigrationCommand(@NotNull String[] args) {
-        if (args.length < 2) {
-            plugin.log(Level.INFO,
-                    "Please choose a migrator, then run \"husksync migrate <migrator>\"");
-            this.logMigratorList();
-            return;
-        }
+    private void about(@NotNull BaseCommand<?> c, @NotNull CommandContext<?> ctx) {
+        user(c, ctx).getAudience().sendMessage(aboutMenu.toComponent());
+    }
 
-        final Optional<Migrator> selectedMigrator = plugin.getAvailableMigrators().stream()
-                .filter(available -> available.getIdentifier().equalsIgnoreCase(args[1]))
-                .findFirst();
-        selectedMigrator.ifPresentOrElse(migrator -> {
-            if (args.length < 3) {
-                plugin.log(Level.INFO, migrator.getHelpMenu());
+    @NotNull
+    private CommandProvider status() {
+        return (sub) -> sub.setDefaultExecutor((ctx) -> {
+            final CommandUser user = user(sub, ctx);
+            plugin.getLocales().getLocale("system_status_header").ifPresent(user::sendMessage);
+            user.sendMessage(Component.join(
+                    JoinConfiguration.newlines(),
+                    Arrays.stream(StatusLine.values()).map(s -> s.get(plugin)).toList()
+            ));
+        });
+    }
+
+    @NotNull
+    private CommandProvider dump() {
+        return (sub) -> {
+            sub.setDefaultExecutor((ctx) -> {
+                final CommandUser user = user(sub, ctx);
+                plugin.getLocales().getLocale("system_dump_confirm").ifPresent(user::sendMessage);
+            });
+            sub.addSubCommand("confirm", (con) -> con.setDefaultExecutor((ctx) -> {
+                final CommandUser user = user(sub, ctx);
+                plugin.getLocales().getLocale("system_dump_started").ifPresent(user::sendMessage);
+                plugin.runAsync(() -> {
+                    final String url = plugin.createDump(user);
+                    plugin.getLocales().getLocale("system_dump_ready").ifPresent(user::sendMessage);
+                    user.sendMessage(Component.text(url).clickEvent(ClickEvent.openUrl(url))
+                            .decorate(TextDecoration.UNDERLINED).color(NamedTextColor.GRAY));
+                });
+            }));
+        };
+    }
+
+    @NotNull
+    private CommandProvider reload() {
+        return (sub) -> sub.setDefaultExecutor((ctx) -> {
+            final CommandUser user = user(sub, ctx);
+            try {
+                plugin.loadSettings();
+                plugin.loadLocales();
+                plugin.loadServer();
+                plugin.getLocales().getLocale("reload_complete").ifPresent(user::sendMessage);
+            } catch (Throwable e) {
+                user.sendMessage(new MineDown(
+                        "[Error:](#ff3300) [Failed to reload the plugin. Check console for errors.](#ff7e5e)"
+                ));
+                plugin.log(Level.SEVERE, "Failed to reload the plugin", e);
+            }
+        });
+    }
+
+    @NotNull
+    private CommandProvider update() {
+        return (sub) -> sub.setDefaultExecutor((ctx) -> updateChecker.check().thenAccept(checked -> {
+            final CommandUser user = user(sub, ctx);
+            if (checked.isUpToDate()) {
+                plugin.getLocales().getLocale("up_to_date", plugin.getPluginVersion().toString())
+                        .ifPresent(user::sendMessage);
                 return;
             }
-            switch (args[2]) {
-                case "start" -> migrator.start().thenAccept(succeeded -> {
+            plugin.getLocales().getLocale("update_available", checked.getLatestVersion().toString(),
+                    plugin.getPluginVersion().toString()).ifPresent(user::sendMessage);
+        }));
+    }
+
+    @NotNull
+    private CommandProvider migrate() {
+        return (sub) -> {
+            sub.setCondition((ctx) -> sub.getUser(ctx).isConsole());
+            sub.setDefaultExecutor((ctx) -> {
+                plugin.log(Level.INFO, "Please choose a migrator, then run \"husksync migrate start <migrator>\"");
+                plugin.log(Level.INFO, String.format(
+                        "List of available migrators:\nMigrator ID / Migrator Name:\n%s",
+                        plugin.getAvailableMigrators().stream()
+                                .map(migrator -> String.format("%s - %s", migrator.getIdentifier(), migrator.getName()))
+                                .collect(Collectors.joining("\n"))
+                ));
+            });
+            sub.addSubCommand("help", (help) -> help.addSyntax((cmd) -> {
+                final Migrator migrator = cmd.getArgument("migrator", Migrator.class);
+                plugin.log(Level.INFO, migrator.getHelpMenu());
+            }, migrator()));
+            sub.addSubCommand("start", (start) -> start.addSyntax((cmd) -> {
+                final Migrator migrator = cmd.getArgument("migrator", Migrator.class);
+                migrator.start().thenAccept(succeeded -> {
                     if (succeeded) {
                         plugin.log(Level.INFO, "Migration completed successfully!");
                     } else {
                         plugin.log(Level.WARNING, "Migration failed!");
                     }
                 });
-                case "set" -> migrator.handleConfigurationCommand(Arrays.copyOfRange(args, 3, args.length));
-                default -> plugin.log(Level.INFO, String.format(
-                        "Invalid syntax. Console usage: \"husksync migrate %s <start/set>", args[1]
-                ));
-            }
-        }, () -> {
-            plugin.log(Level.INFO,
-                    "Please specify a valid migrator.\n" +
-                            "If a migrator is not available, please verify that you meet the prerequisites to use it.");
-            this.logMigratorList();
-        });
-    }
-
-    // Log the list of available migrators
-    private void logMigratorList() {
-        plugin.log(Level.INFO, String.format(
-                "List of available migrators:\nMigrator ID / Migrator Name:\n%s",
-                plugin.getAvailableMigrators().stream()
-                        .map(migrator -> String.format("%s - %s", migrator.getIdentifier(), migrator.getName()))
-                        .collect(Collectors.joining("\n"))
-        ));
-    }
-
-    @Nullable
-    @Override
-    public List<String> suggest(@NotNull CommandUser user, @NotNull String[] args) {
-        return switch (args.length) {
-            case 0, 1 -> SUB_COMMANDS.keySet().stream().sorted().toList();
-            default -> null;
+            }, migrator()));
+            sub.addSubCommand("set", (set) -> set.addSyntax((cmd) -> {
+                final Migrator migrator = cmd.getArgument("migrator", Migrator.class);
+                final String[] args = cmd.getArgument("args", String.class).split(" ");
+                migrator.handleConfigurationCommand(args);
+            }, migrator(), BaseCommand.greedyString("args")));
         };
     }
 
-    private enum StatusLine {
-        PLUGIN_VERSION(plugin -> Component.text("v" + plugin.getPluginVersion().toStringWithoutMetadata())
-                .appendSpace().append(plugin.getPluginVersion().getMetadata().isBlank() ? Component.empty()
-                        : Component.text("(build " + plugin.getPluginVersion().getMetadata() + ")"))),
-        PLATFORM_TYPE(plugin -> Component.text(WordUtils.capitalizeFully(plugin.getPlatformType()))),
-        LANGUAGE(plugin -> Component.text(plugin.getSettings().getLanguage())),
-        MINECRAFT_VERSION(plugin -> Component.text(plugin.getMinecraftVersion().toString())),
-        JAVA_VERSION(plugin -> Component.text(System.getProperty("java.version"))),
-        JAVA_VENDOR(plugin -> Component.text(System.getProperty("java.vendor"))),
-        SYNC_MODE(plugin -> Component.text(WordUtils.capitalizeFully(
-                plugin.getSettings().getSynchronization().getMode().toString()
-        ))),
-        DELAY_LATENCY(plugin -> Component.text(
-                plugin.getSettings().getSynchronization().getNetworkLatencyMilliseconds() + "ms"
-        )),
-        SERVER_NAME(plugin -> Component.text(plugin.getServerName())),
-        CLUSTER_ID(plugin -> Component.text(plugin.getSettings().getClusterId().isBlank() ? "None" : plugin.getSettings().getClusterId())),
-        DATABASE_TYPE(plugin ->
-                Component.text(plugin.getSettings().getDatabase().getType().getDisplayName() +
-                        (plugin.getSettings().getDatabase().getType() == Database.Type.MONGO ?
-                                (plugin.getSettings().getDatabase().getMongoSettings().isUsingAtlas() ? " Atlas" : "") : ""))
-        ),
-        IS_DATABASE_LOCAL(plugin -> getLocalhostBoolean(plugin.getSettings().getDatabase().getCredentials().getHost())),
-        USING_REDIS_SENTINEL(plugin -> getBoolean(
-                !plugin.getSettings().getRedis().getSentinel().getMaster().isBlank()
-        )),
-        USING_REDIS_PASSWORD(plugin -> getBoolean(
-                !plugin.getSettings().getRedis().getCredentials().getPassword().isBlank()
-        )),
-        REDIS_USING_SSL(plugin -> getBoolean(
-                plugin.getSettings().getRedis().getCredentials().isUseSsl()
-        )),
-        IS_REDIS_LOCAL(plugin -> getLocalhostBoolean(
-                plugin.getSettings().getRedis().getCredentials().getHost()
-        )),
-        DATA_TYPES(plugin -> Component.join(
-                JoinConfiguration.commas(true),
-                plugin.getRegisteredDataTypes().stream().map(i -> {
-                    boolean enabled = plugin.getSettings().getSynchronization().isFeatureEnabled(i);
-                    return Component.textOfChildren(Component
-                                    .text(i.toString()).appendSpace().append(Component.text(enabled ? '✔' : '❌')))
-                            .color(enabled ? NamedTextColor.GREEN : NamedTextColor.RED)
-                            .hoverEvent(HoverEvent.showText(Component.text(enabled ? "Enabled" : "Disabled")));
-                }).toList()
-        ));
+    @NotNull
+    private CommandProvider forceUpgrade() {
+        return (sub) -> {
+            sub.setCondition((ctx) -> sub.getUser(ctx).isConsole());
+            sub.setDefaultExecutor((ctx) -> {
+                final LegacyConverter converter = plugin.getLegacyConverter().orElse(null);
+                if (converter == null) {
+                    return;
+                }
 
-        private final Function<HuskSync, Component> supplier;
+                plugin.runAsync(() -> {
+                    final Database database = plugin.getDatabase();
+                    plugin.log(Level.INFO, "Beginning forced legacy data upgrade for all users...");
+                    database.getAllUsers().forEach(user -> database.getLatestSnapshot(user).ifPresent(snapshot -> {
+                        final DataSnapshot.Packed upgraded = converter.convert(
+                                snapshot.asBytes(plugin),
+                                UUID.randomUUID(),
+                                OffsetDateTime.now()
+                        );
+                        upgraded.setSaveCause(DataSnapshot.SaveCause.CONVERTED_FROM_V2);
+                        plugin.getDatabase().addSnapshot(user, upgraded);
+                        plugin.getRedisManager().clearUserData(user);
+                    }));
+                    plugin.log(Level.INFO, "Legacy data upgrade complete!");
+                });
+            });
+        };
+    }
 
-        StatusLine(@NotNull Function<HuskSync, Component> supplier) {
-            this.supplier = supplier;
-        }
-
-        @NotNull
-        private Component get(@NotNull HuskSync plugin) {
-            return Component
-                    .text("•").appendSpace()
-                    .append(Component.text(
-                            WordUtils.capitalizeFully(name().replaceAll("_", " ")),
-                            TextColor.color(0x848484)
-                    ))
-                    .append(Component.text(':')).append(Component.space().color(NamedTextColor.WHITE))
-                    .append(supplier.apply(plugin));
-        }
-
-        @NotNull
-        private static Component getBoolean(boolean value) {
-            return Component.text(value ? "Yes" : "No", value ? NamedTextColor.GREEN : NamedTextColor.RED);
-        }
-
-        @NotNull
-        private static Component getLocalhostBoolean(@NotNull String value) {
-            return getBoolean(value.equals("127.0.0.1") || value.equals("0.0.0.0")
-                    || value.equals("localhost") || value.equals("::1"));
-        }
+    @NotNull
+    private <S> ArgumentElement<S, Migrator> migrator() {
+        return new ArgumentElement<>("migrator", reader -> {
+            final String id = reader.readString();
+            final Migrator migrator = plugin.getAvailableMigrators().stream()
+                    .filter(m -> m.getIdentifier().equalsIgnoreCase(id)).findFirst().orElse(null);
+            if (migrator == null) {
+                throw CommandSyntaxException.BUILT_IN_EXCEPTIONS.dispatcherUnknownArgument().createWithContext(reader);
+            }
+            return migrator;
+        }, (context, builder) -> {
+            for (Migrator material : plugin.getAvailableMigrators()) {
+                builder.suggest(material.getIdentifier());
+            }
+            return builder.buildFuture();
+        });
     }
 
 }

common/src/main/java/net/william278/husksync/command/InventoryCommand.java

@@ -23,7 +23,6 @@ import de.themoep.minedown.adventure.MineDown;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.Data;
 import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.redis.RedisKeyType;
 import net.william278.husksync.redis.RedisManager;
 import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.user.User;
@@ -37,7 +36,7 @@ import java.util.Optional;
 public class InventoryCommand extends ItemsCommand {
 
     public InventoryCommand(@NotNull HuskSync plugin) {
-        super(plugin, List.of("inventory", "invsee", "openinv"));
+        super("inventory", List.of("invsee", "openinv"), DataSnapshot.SaveCause.INVENTORY_COMMAND, plugin);
     }
 
     @Override
@@ -51,7 +50,7 @@ public class InventoryCommand extends ItemsCommand {
         }
 
         // Display opening message
-        plugin.getLocales().getLocale("inventory_viewer_opened", user.getUsername(),
+        plugin.getLocales().getLocale("inventory_viewer_opened", user.getName(),
                         snapshot.getTimestamp().format(DateTimeFormatter
                                 .ofLocalizedDateTime(FormatStyle.MEDIUM, FormatStyle.SHORT)))
                 .ifPresent(viewer::sendMessage);
@@ -60,8 +59,8 @@ public class InventoryCommand extends ItemsCommand {
         final Data.Items.Inventory inventory = optionalInventory.get();
         viewer.showGui(
                 inventory,
-                plugin.getLocales().getLocale("inventory_viewer_menu_title", user.getUsername())
-                        .orElse(new MineDown(String.format("%s's Inventory", user.getUsername()))),
+                plugin.getLocales().getLocale("inventory_viewer_menu_title", user.getName())
+                        .orElse(new MineDown(String.format("%s's Inventory", user.getName()))),
                 allowEdit,
                 inventory.getSlotCount(),
                 (itemsOnClose) -> {
@@ -84,18 +83,17 @@ public class InventoryCommand extends ItemsCommand {
 
         // Create and pack the snapshot with the updated inventory
         final DataSnapshot.Packed snapshot = latestData.get().copy();
+        boolean pin = plugin.getSettings().getSynchronization().doAutoPin(saveCause);
         snapshot.edit(plugin, (data) -> {
             data.getInventory().ifPresent(inventory -> inventory.setContents(items));
-            data.setSaveCause(DataSnapshot.SaveCause.INVENTORY_COMMAND);
-            data.setPinned(
-                    plugin.getSettings().getSynchronization().doAutoPin(DataSnapshot.SaveCause.INVENTORY_COMMAND)
-            );
+            data.setSaveCause(saveCause);
+            data.setPinned(pin);
         });
 
         // Save data
         final RedisManager redis = plugin.getRedisManager();
         plugin.getDataSyncer().saveData(holder, snapshot, (user, data) -> {
-            redis.getUserData(user).ifPresent(d -> redis.setUserData(user, snapshot, RedisKeyType.TTL_1_YEAR));
+            redis.getUserData(user).ifPresent(d -> redis.setUserData(user, snapshot));
             redis.sendUserDataUpdate(user, data);
         });
     }

common/src/main/java/net/william278/husksync/command/ItemsCommand.java

@@ -24,52 +24,52 @@ import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.CommandUser;
 import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.user.User;
+import net.william278.uniform.BaseCommand;
+import net.william278.uniform.Permission;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
-import java.util.Map;
 import java.util.Optional;
 import java.util.UUID;
 
-public abstract class ItemsCommand extends Command implements TabProvider {
+public abstract class ItemsCommand extends PluginCommand {
 
-    protected ItemsCommand(@NotNull HuskSync plugin, @NotNull List<String> aliases) {
-        super(aliases.get(0), aliases.subList(1, aliases.size()), "<player> [version_uuid]", plugin);
-        setOperatorCommand(true);
-        addAdditionalPermissions(Map.of("edit", true));
+    protected final DataSnapshot.SaveCause saveCause;
+
+    protected ItemsCommand(@NotNull String name, @NotNull List<String> aliases,
+                           @NotNull DataSnapshot.SaveCause saveCause, @NotNull HuskSync plugin) {
+        super(name, aliases, Permission.Default.IF_OP, ExecutionScope.IN_GAME, plugin);
+        this.saveCause = saveCause;
     }
 
-
     @Override
-    public void execute(@NotNull CommandUser executor, @NotNull String[] args) {
-        if (!(executor instanceof OnlineUser player)) {
-            plugin.getLocales().getLocale("error_in_game_command_only")
-                    .ifPresent(executor::sendMessage);
-            return;
-        }
-
-        // Find the user to view the items for
-        final Optional<User> optionalUser = parseStringArg(args, 0)
-                .flatMap(name -> plugin.getDatabase().getUserByName(name));
-        if (optionalUser.isEmpty()) {
-            plugin.getLocales().getLocale(
-                    args.length >= 1 ? "error_invalid_player" : "error_invalid_syntax", getUsage()
-            ).ifPresent(player::sendMessage);
-            return;
-        }
-
-        // Show the user data
-        final User user = optionalUser.get();
-        parseUUIDArg(args, 1).ifPresentOrElse(
-                version -> this.showSnapshotItems(player, user, version),
-                () -> this.showLatestItems(player, user)
-        );
+    public void provide(@NotNull BaseCommand<?> command) {
+        command.addSyntax((ctx) -> {
+            final User user = ctx.getArgument("username", User.class);
+            final UUID version = ctx.getArgument("version", UUID.class);
+            final CommandUser executor = user(command, ctx);
+            if (!(executor instanceof OnlineUser online)) {
+                plugin.getLocales().getLocale("error_in_game_command_only")
+                        .ifPresent(executor::sendMessage);
+                return;
+            }
+            this.showSnapshotItems(online, user, version);
+        }, user("username"), versionUuid());
+        command.addSyntax((ctx) -> {
+            final User user = ctx.getArgument("username", User.class);
+            final CommandUser executor = user(command, ctx);
+            if (!(executor instanceof OnlineUser online)) {
+                plugin.getLocales().getLocale("error_in_game_command_only")
+                        .ifPresent(executor::sendMessage);
+                return;
+            }
+            this.showLatestItems(online, user);
+        }, user("username"));
     }
 
     // View (and edit) the latest user data
     private void showLatestItems(@NotNull OnlineUser viewer, @NotNull User user) {
-        plugin.getRedisManager().getUserData(user.getUuid(), user).thenAccept(data -> data
+        plugin.getRedisManager().getOnlineUserData(user.getUuid(), user, saveCause).thenAccept(d -> d
                 .or(() -> plugin.getDatabase().getLatestSnapshot(user))
                 .or(() -> {
                     plugin.getLocales().getLocale("error_no_data_to_display")
@@ -114,12 +114,4 @@ public abstract class ItemsCommand extends Command implements TabProvider {
     protected abstract void showItems(@NotNull OnlineUser viewer, @NotNull DataSnapshot.Unpacked snapshot,
                                       @NotNull User user, boolean allowEdit);
 
-    @Nullable
-    @Override
-    public List<String> suggest(@NotNull CommandUser executor, @NotNull String[] args) {
-        return switch (args.length) {
-            case 0, 1 -> plugin.getOnlineUsers().stream().map(User::getUsername).toList();
-            default -> null;
-        };
-    }
 }

common/src/main/java/net/william278/husksync/command/Node.java

@@ -1,105 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.command;
-
-import net.william278.husksync.HuskSync;
-import org.jetbrains.annotations.NotNull;
-
-import java.util.List;
-import java.util.Optional;
-import java.util.StringJoiner;
-import java.util.UUID;
-
-public abstract class Node implements Executable {
-
-    protected static final String PERMISSION_PREFIX = "husksync.command";
-
-    protected final HuskSync plugin;
-    private final String name;
-    private final List<String> aliases;
-    private boolean operatorCommand = false;
-
-    protected Node(@NotNull String name, @NotNull List<String> aliases, @NotNull HuskSync plugin) {
-        if (name.isBlank()) {
-            throw new IllegalArgumentException("Command name cannot be blank");
-        }
-        this.name = name;
-        this.aliases = aliases;
-        this.plugin = plugin;
-    }
-
-    @NotNull
-    public String getName() {
-        return name;
-    }
-
-    @NotNull
-    public List<String> getAliases() {
-        return aliases;
-    }
-
-    @NotNull
-    public String getPermission(@NotNull String... child) {
-        final StringJoiner joiner = new StringJoiner(".")
-                .add(PERMISSION_PREFIX)
-                .add(getName());
-        for (final String node : child) {
-            joiner.add(node);
-        }
-        return joiner.toString().trim();
-    }
-
-    public boolean isOperatorCommand() {
-        return operatorCommand;
-    }
-
-    public void setOperatorCommand(boolean operatorCommand) {
-        this.operatorCommand = operatorCommand;
-    }
-
-    protected Optional<String> parseStringArg(@NotNull String[] args, int index) {
-        if (args.length > index) {
-            return Optional.of(args[index]);
-        }
-        return Optional.empty();
-    }
-
-    protected Optional<Integer> parseIntArg(@NotNull String[] args, int index) {
-        return parseStringArg(args, index).flatMap(arg -> {
-            try {
-                return Optional.of(Integer.parseInt(arg));
-            } catch (NumberFormatException e) {
-                return Optional.empty();
-            }
-        });
-    }
-
-    protected Optional<UUID> parseUUIDArg(@NotNull String[] args, int index) {
-        return parseStringArg(args, index).flatMap(arg -> {
-            try {
-                return Optional.of(UUID.fromString(arg));
-            } catch (IllegalArgumentException e) {
-                return Optional.empty();
-            }
-        });
-    }
-
-
-}

common/src/main/java/net/william278/husksync/command/PluginCommand.java

@@ -0,0 +1,154 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.command;
+
+import com.mojang.brigadier.context.CommandContext;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import net.william278.husksync.HuskSync;
+import net.william278.husksync.user.CommandUser;
+import net.william278.husksync.user.OnlineUser;
+import net.william278.husksync.user.User;
+import net.william278.uniform.BaseCommand;
+import net.william278.uniform.Command;
+import net.william278.uniform.Permission;
+import net.william278.uniform.element.ArgumentElement;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Arrays;
+import java.util.Comparator;
+import java.util.List;
+import java.util.UUID;
+import java.util.function.Function;
+
+public abstract class PluginCommand extends Command {
+
+    protected final HuskSync plugin;
+
+    protected PluginCommand(@NotNull String name, @NotNull List<String> aliases, @NotNull Permission.Default defPerm,
+                            @NotNull ExecutionScope scope, @NotNull HuskSync plugin) {
+        super(name, aliases, getDescription(plugin, name), new Permission(createPermission(name), defPerm), scope);
+        this.plugin = plugin;
+    }
+
+    private static String getDescription(@NotNull HuskSync plugin, @NotNull String name) {
+        return plugin.getLocales().getRawLocale("%s_command_description".formatted(name)).orElse("");
+    }
+
+    @NotNull
+    private static String createPermission(@NotNull String name, @NotNull String... sub) {
+        return "husksync.command." + name + (sub.length > 0 ? "." + String.join(".", sub) : "");
+    }
+
+    @NotNull
+    protected String getPermission(@NotNull String... sub) {
+        return createPermission(this.getName(), sub);
+    }
+
+    @NotNull
+    @SuppressWarnings("rawtypes")
+    protected CommandUser user(@NotNull BaseCommand base, @NotNull CommandContext context) {
+        return adapt(base.getUser(context.getSource()));
+    }
+
+    @NotNull
+    protected Permission needsOp(@NotNull String... nodes) {
+        return new Permission(getPermission(nodes), Permission.Default.IF_OP);
+    }
+
+    @NotNull
+    protected CommandUser adapt(net.william278.uniform.CommandUser user) {
+        return user.getUuid() == null ? plugin.getConsole() : plugin.getOnlineUser(user.getUuid()).orElseThrow();
+    }
+
+    @NotNull
+    @SuppressWarnings("SameParameterValue")
+    protected <S> ArgumentElement<S, OnlineUser> onlineUser(@NotNull String name) {
+        return new ArgumentElement<>(name, reader -> {
+            final String username = reader.readString();
+            return plugin.getOnlineUsers().stream()
+                    .filter(user -> username.equals(user.getName()))
+                    .findFirst().orElse(null);
+        }, (context, builder) -> {
+            plugin.getOnlineUsers().forEach(u -> builder.suggest(u.getName()));
+            return builder.buildFuture();
+        });
+    }
+
+    @NotNull
+    protected <S> ArgumentElement<S, User> user(@NotNull String name) {
+        return new ArgumentElement<>(name, reader -> {
+            final String username = reader.readString();
+            return plugin.getDatabase().getUserByName(username).orElseThrow(
+                    () -> CommandSyntaxException.BUILT_IN_EXCEPTIONS.dispatcherUnknownArgument().createWithContext(reader)
+            );
+        }, (context, builder) -> {
+            plugin.getOnlineUsers().forEach(u -> builder.suggest(u.getName()));
+            return builder.buildFuture();
+        });
+    }
+
+    @NotNull
+    protected  <S> ArgumentElement<S, UUID> versionUuid() {
+        return new ArgumentElement<>("version", reader -> {
+            try {
+                return UUID.fromString(reader.readString());
+            } catch (IllegalArgumentException e) {
+                throw CommandSyntaxException.BUILT_IN_EXCEPTIONS.dispatcherUnknownArgument().createWithContext(reader);
+            }
+        }, (context, builder) -> {
+            try {
+                plugin.getDatabase().getAllSnapshots(context.getArgument("username", User.class))
+                        .stream().sorted(Comparator.comparing(d -> d.getTimestamp().toEpochSecond()))
+                        .forEach(id -> builder.suggest(id.getId().toString()));
+                return builder.buildFuture();
+            } catch (IllegalArgumentException e) {
+                return builder.buildFuture();
+            }
+        });
+    }
+
+    public enum Type {
+
+        HUSKSYNC_COMMAND(HuskSyncCommand::new),
+        USERDATA_COMMAND(UserDataCommand::new),
+        INVENTORY_COMMAND(InventoryCommand::new),
+        ENDER_CHEST_COMMAND(EnderChestCommand::new);
+
+        public final Function<HuskSync, PluginCommand> commandSupplier;
+
+        Type(@NotNull Function<HuskSync, PluginCommand> supplier) {
+            this.commandSupplier = supplier;
+        }
+
+        @NotNull
+        public PluginCommand supply(@NotNull HuskSync plugin) {
+            return commandSupplier.apply(plugin);
+        }
+
+        @NotNull
+        public static PluginCommand[] create(@NotNull HuskSync plugin) {
+            return Arrays.stream(values()).map(type -> type.supply(plugin))
+                    .filter(command -> !plugin.getSettings().isCommandDisabled(command))
+                    .toArray(PluginCommand[]::new);
+        }
+
+    }
+
+}

common/src/main/java/net/william278/husksync/command/TabProvider.java

@@ -1,50 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.command;
-
-import net.william278.husksync.user.CommandUser;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import java.util.List;
-
-public interface TabProvider {
-
-    @Nullable
-    List<String> suggest(@NotNull CommandUser user, @NotNull String[] args);
-
-    @NotNull
-    default List<String> getSuggestions(@NotNull CommandUser user, @NotNull String[] args) {
-        List<String> suggestions = suggest(user, args);
-        if (suggestions == null) {
-            suggestions = List.of();
-        }
-        return filter(suggestions, args);
-    }
-
-    @NotNull
-    default List<String> filter(@NotNull List<String> suggestions, @NotNull String[] args) {
-        return suggestions.stream()
-                .filter(suggestion -> args.length == 0 || suggestion.toLowerCase()
-                        .startsWith(args[args.length - 1].toLowerCase().trim()))
-                .toList();
-    }
-
-}

common/src/main/java/net/william278/husksync/command/UserDataCommand.java

@@ -19,92 +19,47 @@
 
 package net.william278.husksync.command;
 
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.event.ClickEvent;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextDecoration;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.redis.RedisKeyType;
 import net.william278.husksync.redis.RedisManager;
 import net.william278.husksync.user.CommandUser;
+import net.william278.husksync.user.OnlineUser;
 import net.william278.husksync.user.User;
-import net.william278.husksync.util.DataDumper;
 import net.william278.husksync.util.DataSnapshotList;
 import net.william278.husksync.util.DataSnapshotOverview;
+import net.william278.husksync.util.UserDataDumper;
+import net.william278.uniform.BaseCommand;
+import net.william278.uniform.CommandProvider;
+import net.william278.uniform.Permission;
+import net.william278.uniform.element.ArgumentElement;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
-import java.util.*;
+import java.util.List;
+import java.util.Locale;
+import java.util.Optional;
+import java.util.UUID;
 import java.util.logging.Level;
 
-public class UserDataCommand extends Command implements TabProvider {
-
-    private static final Map<String, Boolean> SUB_COMMANDS = Map.of(
-            "view", false,
-            "list", false,
-            "delete", true,
-            "restore", true,
-            "pin", true,
-            "dump", true
-    );
+public class UserDataCommand extends PluginCommand {
 
     public UserDataCommand(@NotNull HuskSync plugin) {
-        super("userdata", List.of("playerdata"), String.format(
-                "<%s> [username] [version_uuid]", String.join("/", SUB_COMMANDS.keySet())
-        ), plugin);
-        setOperatorCommand(true);
-        addAdditionalPermissions(SUB_COMMANDS);
+        super("userdata", List.of("playerdata"), Permission.Default.IF_OP, ExecutionScope.ALL, plugin);
     }
 
     @Override
-    public void execute(@NotNull CommandUser executor, @NotNull String[] args) {
-        final String subCommand = parseStringArg(args, 0).orElse("view").toLowerCase(Locale.ENGLISH);
-        final Optional<User> optionalUser = parseStringArg(args, 1)
-                .flatMap(name -> plugin.getDatabase().getUserByName(name))
-                .or(() -> parseStringArg(args, 0).flatMap(name -> plugin.getDatabase().getUserByName(name)))
-                .or(() -> args.length < 2 && executor instanceof User userExecutor
-                        ? Optional.of(userExecutor) : Optional.empty());
-        final Optional<UUID> uuid = parseUUIDArg(args, 2).or(() -> parseUUIDArg(args, 1));
-        if (optionalUser.isEmpty()) {
-            plugin.getLocales().getLocale("error_invalid_player")
-                    .ifPresent(executor::sendMessage);
-            return;
-        }
-
-        final User user = optionalUser.get();
-        switch (subCommand) {
-            case "view" -> uuid.ifPresentOrElse(
-                    version -> viewSnapshot(executor, user, version),
-                    () -> viewLatestSnapshot(executor, user)
-            );
-            case "list" -> listSnapshots(
-                    executor, user, parseIntArg(args, 2).or(() -> parseIntArg(args, 1)).orElse(1)
-            );
-            case "delete" -> uuid.ifPresentOrElse(
-                    version -> deleteSnapshot(executor, user, version),
-                    () -> plugin.getLocales().getLocale("error_invalid_syntax",
-                                    "/userdata delete <username> <version_uuid>")
-                            .ifPresent(executor::sendMessage)
-            );
-            case "restore" -> uuid.ifPresentOrElse(
-                    version -> restoreSnapshot(executor, user, version),
-                    () -> plugin.getLocales().getLocale("error_invalid_syntax",
-                                    "/userdata restore <username> <version_uuid>")
-                            .ifPresent(executor::sendMessage)
-            );
-            case "pin" -> uuid.ifPresentOrElse(
-                    version -> pinSnapshot(executor, user, version),
-                    () -> plugin.getLocales().getLocale("error_invalid_syntax",
-                                    "/userdata pin <username> <version_uuid>")
-                            .ifPresent(executor::sendMessage)
-            );
-            case "dump" -> uuid.ifPresentOrElse(
-                    version -> dumpSnapshot(executor, user, version, parseStringArg(args, 3)
-                            .map(arg -> arg.equalsIgnoreCase("web")).orElse(false)),
-                    () -> plugin.getLocales().getLocale("error_invalid_syntax",
-                                    "/userdata dump <web/file> <username> <version_uuid>")
-                            .ifPresent(executor::sendMessage)
-            );
-            default -> plugin.getLocales().getLocale("error_invalid_syntax", getUsage())
-                    .ifPresent(executor::sendMessage);
-        }
+    public void provide(@NotNull BaseCommand<?> command) {
+        command.addSubCommand("view", needsOp("view"), view());
+        command.addSubCommand("list", needsOp("list"), list());
+        command.addSubCommand("delete", needsOp("delete"), delete());
+        command.addSubCommand("save", needsOp("save"), save());
+        command.addSubCommand("restore", needsOp("restore"), restore());
+        command.addSubCommand("pin", needsOp("pin"), pin());
+        command.addSubCommand("dump", needsOp("dump"), dump());
     }
 
     // Show the latest snapshot
@@ -152,6 +107,13 @@ public class UserDataCommand extends Command implements TabProvider {
         DataSnapshotList.create(dataList, user, plugin).displayPage(executor, page);
     }
 
+    // Create and save a snapshot of a user's current data
+    private void createAndSaveSnapshot(@NotNull CommandUser executor, @NotNull OnlineUser onlineUser) {
+        plugin.getDataSyncer().saveCurrentUserData(onlineUser, DataSnapshot.SaveCause.SAVE_COMMAND);
+        plugin.getLocales().getLocale("data_saved", onlineUser.getName())
+                .ifPresent(executor::sendMessage);
+    }
+
     // Delete a snapshot
     private void deleteSnapshot(@NotNull CommandUser executor, @NotNull User user, @NotNull UUID version) {
         if (!plugin.getDatabase().deleteSnapshot(user, version)) {
@@ -163,7 +125,7 @@ public class UserDataCommand extends Command implements TabProvider {
         plugin.getLocales().getLocale("data_deleted",
                         version.toString().split("-")[0],
                         version.toString(),
-                        user.getUsername(),
+                        user.getName(),
                         user.getUuid().toString())
                 .ifPresent(executor::sendMessage);
     }
@@ -195,9 +157,9 @@ public class UserDataCommand extends Command implements TabProvider {
         // Save data
         final RedisManager redis = plugin.getRedisManager();
         plugin.getDataSyncer().saveData(user, data, (u, s) -> {
-            redis.getUserData(u).ifPresent(d -> redis.setUserData(u, s, RedisKeyType.TTL_1_YEAR));
+            redis.getUserData(u).ifPresent(d -> redis.setUserData(u, s));
             redis.sendUserDataUpdate(u, s);
-            plugin.getLocales().getLocale("data_restored", u.getUsername(), u.getUuid().toString(),
+            plugin.getLocales().getLocale("data_restored", u.getName(), u.getUuid().toString(),
                     s.getShortId(), s.getId().toString()).ifPresent(executor::sendMessage);
         });
     }
@@ -219,40 +181,147 @@ public class UserDataCommand extends Command implements TabProvider {
             plugin.getDatabase().pinSnapshot(user, data.getId());
         }
         plugin.getLocales().getLocale(data.isPinned() ? "data_unpinned" : "data_pinned", data.getShortId(),
-                        data.getId().toString(), user.getUsername(), user.getUuid().toString())
+                        data.getId().toString(), user.getName(), user.getUuid().toString())
                 .ifPresent(executor::sendMessage);
     }
 
-    // Dump a snapshot
-    private void dumpSnapshot(@NotNull CommandUser executor, @NotNull User user, @NotNull UUID version, boolean webDump) {
+    // Lookup a snapshot by UUID and dump
+    private void dumpSnapshot(@NotNull CommandUser executor, @NotNull User user, @NotNull UUID version,
+                              @NotNull DumpType type) {
         final Optional<DataSnapshot.Packed> data = plugin.getDatabase().getSnapshot(user, version);
         if (data.isEmpty()) {
             plugin.getLocales().getLocale("error_invalid_version_uuid")
                     .ifPresent(executor::sendMessage);
             return;
         }
+        this.dumpSnapshot(executor, user, data.get(), type);
+    }
 
-        // Dump the data
-        final DataSnapshot.Packed userData = data.get();
-        final DataDumper dumper = DataDumper.create(userData, user, plugin);
+    // Dump a snapshot
+    private void dumpSnapshot(@NotNull CommandUser executor, @NotNull User user,
+                              @NotNull DataSnapshot.Packed userData, @NotNull DumpType type) {
+        final UserDataDumper dumper = UserDataDumper.create(userData, user, plugin);
         try {
-            plugin.getLocales().getLocale("data_dumped", userData.getShortId(), user.getUsername(),
-                    (webDump ? dumper.toWeb() : dumper.toFile())).ifPresent(executor::sendMessage);
+            final String url = type == DumpType.WEB ? dumper.toWeb() : dumper.toFile();
+            plugin.getLocales().getLocale("data_dumped", userData.getShortId(), user.getName())
+                    .ifPresent(executor::sendMessage);
+            executor.sendMessage(Component.text(url)
+                    .clickEvent(type == DumpType.WEB ? ClickEvent.openUrl(url) : ClickEvent.copyToClipboard(url))
+                    .decorate(TextDecoration.UNDERLINED).color(NamedTextColor.GRAY));
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "Failed to dump user data", e);
         }
     }
 
-    @Nullable
-    @Override
-    public List<String> suggest(@NotNull CommandUser executor, @NotNull String[] args) {
-        return switch (args.length) {
-            case 0, 1 -> SUB_COMMANDS.keySet().stream().sorted().toList();
-            case 2 -> plugin.getOnlineUsers().stream().map(User::getUsername).toList();
-            case 4 -> parseStringArg(args, 0)
-                    .map(arg -> arg.equalsIgnoreCase("dump") ? List.of("web", "file") : null)
-                    .orElse(null);
-            default -> null;
+    @NotNull
+    private CommandProvider view() {
+        return (sub) -> {
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                final UUID version = ctx.getArgument("version", UUID.class);
+                viewSnapshot(user(sub, ctx), user, version);
+            }, user("username"), versionUuid());
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                viewLatestSnapshot(user(sub, ctx), user);
+            }, user("username"));
         };
     }
+
+    @NotNull
+    private CommandProvider list() {
+        return (sub) -> {
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                listSnapshots(user(sub, ctx), user, 1);
+            }, user("username"));
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                final int page = ctx.getArgument("page", Integer.class);
+                listSnapshots(user(sub, ctx), user, page);
+            }, user("username"), BaseCommand.intNum("page", 1));
+        };
+    }
+
+    @NotNull
+    private CommandProvider delete() {
+        return (sub) -> sub.addSyntax((ctx) -> {
+            final User user = ctx.getArgument("username", User.class);
+            final UUID version = ctx.getArgument("version", UUID.class);
+            deleteSnapshot(user(sub, ctx), user, version);
+        }, user("username"), versionUuid());
+    }
+
+    @NotNull
+    private CommandProvider save() {
+        return (sub) -> sub.addSyntax((ctx) -> {
+            final OnlineUser user = ctx.getArgument("username", OnlineUser.class);
+            createAndSaveSnapshot(user(sub, ctx), user);
+        }, onlineUser("username"));
+    }
+
+    @NotNull
+    private CommandProvider restore() {
+        return (sub) -> sub.addSyntax((ctx) -> {
+            final User user = ctx.getArgument("username", User.class);
+            final UUID version = ctx.getArgument("version", UUID.class);
+            restoreSnapshot(user(sub, ctx), user, version);
+        }, user("username"), versionUuid());
+    }
+
+    @NotNull
+    private CommandProvider pin() {
+        return (sub) -> sub.addSyntax((ctx) -> {
+            final User user = ctx.getArgument("username", User.class);
+            final UUID version = ctx.getArgument("version", UUID.class);
+            pinSnapshot(user(sub, ctx), user, version);
+        }, user("username"), versionUuid());
+    }
+
+    @NotNull
+    private CommandProvider dump() {
+        return (sub) -> {
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                final CommandUser executor = user(sub, ctx);
+                plugin.getRedisManager()
+                        .getOnlineUserData(UUID.randomUUID(), user, DataSnapshot.SaveCause.DUMP_COMMAND)
+                        .thenAccept((data) -> data
+                                .or(() -> plugin.getDatabase().getLatestSnapshot(user))
+                                .ifPresentOrElse(
+                                        (s) -> dumpSnapshot(executor, user, s, DumpType.WEB),
+                                        () -> plugin.getLocales().getLocale("error_no_data_to_display")
+                                                .ifPresent(executor::sendMessage)
+                                ));
+            }, user("username"));
+            sub.addSyntax((ctx) -> {
+                final User user = ctx.getArgument("username", User.class);
+                final UUID version = ctx.getArgument("version", UUID.class);
+                final DumpType type = ctx.getArgument("type", DumpType.class);
+                dumpSnapshot(user(sub, ctx), user, version, type);
+            }, user("username"), versionUuid(), dumpType());
+        };
+    }
+
+    private <S> ArgumentElement<S, DumpType> dumpType() {
+        return new ArgumentElement<>("type", reader -> {
+            final String type = reader.readString();
+            return switch (type.toLowerCase(Locale.ENGLISH)) {
+                case "web" -> DumpType.WEB;
+                case "file" -> DumpType.FILE;
+                default -> throw CommandSyntaxException.BUILT_IN_EXCEPTIONS
+                        .dispatcherUnknownArgument().createWithContext(reader);
+            };
+        }, (context, builder) -> {
+            builder.suggest("web");
+            builder.suggest("file");
+            return builder.buildFuture();
+        });
+    }
+
+    enum DumpType {
+        WEB,
+        FILE
+    }
+
 }

common/src/main/java/net/william278/husksync/config/ConfigProvider.java

@@ -131,6 +131,15 @@ public interface ConfigProvider {
         ));
     }
 
+    default void validateConfigFiles() {
+        // Validate server name is default
+        if (getServerName().equals("server")) {
+            getPlugin().log(Level.WARNING, "The server name set in ~/plugins/HuskSync/server.yml appears to" +
+                    "be unchanged from the default (currently set to: \"server\"). Please check that this value has" +
+                    "been updated to match the case-sensitive ID of this server in your proxy config file!");
+        }
+    }
+
     /**
      * Get a plugin resource
      *

common/src/main/java/net/william278/husksync/config/Locales.java

@@ -193,14 +193,20 @@ public class Locales {
          * Displays the notification in the action bar
          */
         ACTION_BAR,
+
         /**
          * Displays the notification in the chat
          */
         CHAT,
+
         /**
          * Displays the notification in an Advancement Toast
+         *
+         * @deprecated No longer supported
          */
+        @Deprecated(since = "3.6.7")
         TOAST,
+
         /**
          * Does not display the notification
          */

common/src/main/java/net/william278/husksync/config/Server.java

@@ -22,13 +22,11 @@ package net.william278.husksync.config;
 import de.exlll.configlib.Configuration;
 import lombok.AccessLevel;
 import lombok.AllArgsConstructor;
-import lombok.Getter;
 import lombok.NoArgsConstructor;
 import org.jetbrains.annotations.NotNull;
 
 import java.nio.file.Path;
 
-@Getter
 @Configuration
 @NoArgsConstructor(access = AccessLevel.PRIVATE)
 @AllArgsConstructor(access = AccessLevel.PRIVATE)
@@ -66,5 +64,9 @@ public class Server {
         }
         return super.equals(other);
     }
-
+  
+    public String getName() {
+        final String envServerName = System.getenv("HUSKSYNC_SERVER_NAME");
+        return envServerName == null ? name : envServerName;
+    }
 }

common/src/main/java/net/william278/husksync/config/Settings.java

@@ -25,6 +25,7 @@ import de.exlll.configlib.Configuration;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import net.william278.husksync.command.PluginCommand;
 import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.data.Identifier;
 import net.william278.husksync.database.Database;
@@ -63,21 +64,21 @@ public class Settings {
     private boolean checkForUpdates = true;
 
     @Comment("Specify a common ID for grouping servers running HuskSync. "
-            + "Don't modify this unless you know what you're doing!")
+             + "Don't modify this unless you know what you're doing!")
     private String clusterId = "";
 
     @Comment("Enable development debug logging")
     private boolean debugLogging = false;
 
-    @Comment("Whether to provide modern, rich TAB suggestions for commands (if available)")
-    private boolean brigadierTabCompletion = false;
-
     @Comment({"Whether to enable the Player Analytics hook.", "Docs: https://william278.net/docs/husksync/plan-hook"})
     private boolean enablePlanHook = true;
 
     @Comment("Whether to cancel game event packets directly when handling locked players if ProtocolLib or PacketEvents is installed")
     private boolean cancelPackets = true;
 
+    @Comment("Add HuskSync commands to this list to prevent them from being registered (e.g. ['userdata'])")
+    @Getter(AccessLevel.NONE)
+    private List<String> disabledCommands = Lists.newArrayList();
 
     // Database settings
     @Comment("Database settings")
@@ -140,13 +141,16 @@ public class Settings {
         @Getter(AccessLevel.NONE)
         private Map<String, String> tableNames = Database.TableName.getDefaults();
 
+        @Comment("Whether to run the creation SQL on the database when the server starts. Don't modify this unless you know what you're doing!")
+        private boolean createTables = true;
+
         @NotNull
         public String getTableName(@NotNull Database.TableName tableName) {
             return tableNames.getOrDefault(tableName.name().toLowerCase(Locale.ENGLISH), tableName.getDefaultName());
         }
     }
 
-    // 𝓡𝓮𝓭𝓲𝓼 settings
+    // Redis settings
     @Comment("Redis settings")
     private RedisSettings redis = new RedisSettings();
 
@@ -155,7 +159,9 @@ public class Settings {
     @NoArgsConstructor(access = AccessLevel.PRIVATE)
     public static class RedisSettings {
 
-        @Comment("Specify the credentials of your Redis database here. Set \"password\" to '' if you don't have one")
+        @Comment({"Specify the credentials of your Redis server here.",
+                "Set \"user\" to '' if you don't have one or would like to use the default user.",
+                "Set \"password\" to '' if you don't have one."})
         private RedisCredentials credentials = new RedisCredentials();
 
         @Getter
@@ -164,8 +170,49 @@ public class Settings {
         public static class RedisCredentials {
             private String host = "localhost";
             private int port = 6379;
+            @Comment("Only change the database if you know what you are doing. The default is 0.")
+            private int database = 0;
+            private String user = "";
             private String password = "";
+
+            @Comment("Use SSL/TLS for encrypted connections.")
             private boolean useSsl = false;
+
+            @Comment("Connection timeout in milliseconds.")
+            private int connectionTimeout = 2000;
+
+            @Comment("Socket (read/write) timeout in milliseconds.")
+            private int socketTimeout = 2000;
+
+            @Comment("Max number of connections in the pool.")
+            private int maxTotalConnections = 50;
+
+            @Comment("Max number of idle connections in the pool.")
+            private int maxIdleConnections = 8;
+
+            @Comment("Min number of idle connections in the pool.")
+            private int minIdleConnections = 2;
+
+            @Comment("Enable health checks when borrowing connections from the pool.")
+            private boolean testOnBorrow = true;
+
+            @Comment("Enable health checks when returning connections to the pool.")
+            private boolean testOnReturn = true;
+
+            @Comment("Enable periodic idle connection health checks.")
+            private boolean testWhileIdle = true;
+
+            @Comment("Min evictable idle time (ms) before a connection is eligible for eviction.")
+            private long minEvictableIdleTimeMillis = 60000;
+
+            @Comment("Time (ms) between eviction runs.")
+            private long timeBetweenEvictionRunsMillis = 30000;
+
+            @Comment("Number of retries for commands when connection fails.")
+            private int maxRetries = 3;
+
+            @Comment("Base backoff time in ms for retries (exponential backoff multiplier).")
+            private int retryBackoffMillis = 200;
         }
 
         @Comment("Options for if you're using Redis sentinel. Don't modify this unless you know what you're doing!")
@@ -185,7 +232,7 @@ public class Settings {
     }
 
     // Synchronization settings
-    @Comment("Redis settings")
+    @Comment("Data syncing settings")
     private SynchronizationSettings synchronization = new SynchronizationSettings();
 
     @Getter
@@ -228,7 +275,7 @@ public class Settings {
             private boolean enabled = false;
 
             @Comment("What items to save in death snapshots? (DROPS or ITEMS_TO_KEEP). "
-                    + "Note that ITEMS_TO_KEEP (suggested for keepInventory servers) requires a Paper 1.19.4+ server.")
+                     + "Note that ITEMS_TO_KEEP (suggested for keepInventory servers) requires a Paper 1.19.4+ server.")
             private DeathItemsMode itemsToSave = DeathItemsMode.DROPS;
 
             @Comment("Should a death snapshot still be created even if the items to save on the player's death are empty?")
@@ -249,14 +296,14 @@ public class Settings {
         @Comment("Whether to use the snappy data compression algorithm. Keep on unless you know what you're doing")
         private boolean compressData = true;
 
-        @Comment("Where to display sync notifications (ACTION_BAR, CHAT, TOAST or NONE)")
+        @Comment("Where to display sync notifications (ACTION_BAR, CHAT or NONE)")
         private Locales.NotificationSlot notificationDisplaySlot = Locales.NotificationSlot.ACTION_BAR;
 
         @Comment("Persist maps locked in a Cartography Table to let them be viewed on any server")
         private boolean persistLockedMaps = true;
 
         @Comment("If using the DELAY sync method, how long should this server listen for Redis key data updates before "
-                + "pulling data from the database instead (i.e., if the user did not change servers).")
+                 + "pulling data from the database instead (i.e., if the user did not change servers).")
         private int networkLatencyMilliseconds = 500;
 
         @Comment({"Which data types to synchronize.", "Docs: https://william278.net/docs/husksync/sync-features"})
@@ -266,15 +313,60 @@ public class Settings {
         @Comment("Commands which should be blocked before a player has finished syncing (Use * to block all commands)")
         private List<String> blacklistedCommandsWhileLocked = new ArrayList<>(List.of("*"));
 
-        @Comment({"For attribute syncing, which attributes should be ignored/skipped when syncing",
-                "(e.g. ['minecraft:generic.max_health', 'minecraft:generic.attack_damage'])"})
-        @Getter(AccessLevel.NONE)
-        private List<String> ignoredAttributes = new ArrayList<>(List.of(""));
+        @Comment("Configuration for how to sync attributes")
+        private AttributeSettings attributes = new AttributeSettings();
+
+        @Getter
+        @Configuration
+        @NoArgsConstructor(access = AccessLevel.PRIVATE)
+        public static class AttributeSettings {
+
+            @Comment({"Which attribute types should be saved as part of attribute syncing. Supports wildcard matching.",
+                    "(e.g. ['minecraft:generic.max_health', 'minecraft:generic.*'])"})
+            @Getter(AccessLevel.NONE)
+            private List<String> syncedAttributes = new ArrayList<>(List.of(
+                    "minecraft:generic.max_health", "minecraft:max_health",
+                    "minecraft:generic.max_absorption", "minecraft:max_absorption",
+                    "minecraft:generic.luck", "minecraft:luck",
+                    "minecraft:generic.scale", "minecraft:scale",
+                    "minecraft:generic.step_height", "minecraft:step_height",
+                    "minecraft:generic.gravity", "minecraft:gravity"
+            ));
+
+            @Comment({"Which attribute modifiers should be saved. Supports wildcard matching.",
+                    "(e.g. ['minecraft:effect.speed', 'minecraft:effect.*'])"})
+            @Getter(AccessLevel.NONE)
+            private List<String> ignoredModifiers = new ArrayList<>(List.of(
+                    "minecraft:effect.*", "minecraft:creative_mode_*"
+            ));
+
+            private boolean matchesWildcard(@NotNull String pat, @NotNull String value) {
+                if (!pat.contains(":")) {
+                    pat = "minecraft:%s".formatted(pat);
+                }
+                if (!value.contains(":")) {
+                    value = "minecraft:%s".formatted(value);
+                }
+                return pat.contains("*") ? value.matches(pat.replace("*", ".*")) : pat.equals(value);
+            }
+
+            public boolean isIgnoredAttribute(@NotNull String attribute) {
+                return syncedAttributes.stream().noneMatch(wildcard -> matchesWildcard(wildcard, attribute));
+            }
+
+            public boolean isIgnoredModifier(@NotNull String modifier) {
+                return ignoredModifiers.stream().anyMatch(wildcard -> matchesWildcard(wildcard, modifier));
+            }
+
+        }
 
         @Comment("Event priorities for listeners (HIGHEST, NORMAL, LOWEST). Change if you encounter plugin conflicts")
         @Getter(AccessLevel.NONE)
         private Map<String, String> eventPriorities = EventListener.ListenerType.getDefaults();
 
+        @Comment("Enable check-in petitions for data syncing (don't change this unless you know what you're doing)")
+        private boolean checkinPetitions = false;
+
         public boolean doAutoPin(@NotNull DataSnapshot.SaveCause cause) {
             return autoPinnedSaveCauses.contains(cause.name());
         }
@@ -283,10 +375,6 @@ public class Settings {
             return id.isCustom() || features.getOrDefault(id.getKeyValue(), id.isEnabledByDefault());
         }
 
-        public boolean isIgnoredAttribute(@NotNull String attribute) {
-            return ignoredAttributes.contains(attribute);
-        }
-
         @NotNull
         public EventListener.Priority getEventPriority(@NotNull EventListener.ListenerType type) {
             try {
@@ -297,4 +385,10 @@ public class Settings {
         }
     }
 
+    public boolean isCommandDisabled(@NotNull PluginCommand command) {
+        return disabledCommands.stream().map(c -> c.startsWith("/") ? c.substring(1) : c)
+                .anyMatch(c -> c.equalsIgnoreCase(command.getName()) || command.getAliases().contains(c));
+    }
+
+
 }

common/src/main/java/net/william278/husksync/data/Data.java

@@ -21,6 +21,10 @@ package net.william278.husksync.data;
 
 import com.google.common.collect.Sets;
 import com.google.gson.annotations.SerializedName;
+import lombok.AccessLevel;
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import lombok.experimental.Accessors;
 import net.kyori.adventure.key.Key;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.user.OnlineUser;
@@ -78,6 +82,7 @@ public interface Data {
          */
         interface Inventory extends Items {
 
+            int INVENTORY_SLOT_COUNT = 41;
             String ITEMS_TAG = "items";
             String HELD_ITEM_SLOT_TAG = "held_item_slot";
 
@@ -110,7 +115,7 @@ public interface Data {
          * Data container holding data for ender chests
          */
         interface EnderChest extends Items {
-
+            int ENDER_CHEST_SLOT_COUNT = 27;
         }
 
     }
@@ -126,7 +131,7 @@ public interface Data {
         /**
          * Represents a potion effect
          *
-         * @param type          the type of potion effect
+         * @param type          the key of potion effect
          * @param amplifier     the amplifier of the potion effect
          * @param duration      the duration of the potion effect
          * @param isAmbient     whether the potion effect is ambient
@@ -149,14 +154,14 @@ public interface Data {
      */
     interface Advancements extends Data {
 
+        String RECIPE_ADVANCEMENT = "minecraft:recipe";
+
         @NotNull
         List<Advancement> getCompleted();
 
         @NotNull
         default List<Advancement> getCompletedExcludingRecipes() {
-            return getCompleted().stream()
-                    .filter(advancement -> !advancement.getKey().startsWith("minecraft:recipe"))
-                    .collect(Collectors.toList());
+            return getCompleted().stream().filter(adv -> !adv.getKey().startsWith(RECIPE_ADVANCEMENT)).toList();
         }
 
         void setCompleted(@NotNull List<Advancement> completed);
@@ -333,27 +338,78 @@ public interface Data {
 
         }
 
-        record Modifier(
-                @NotNull UUID uuid,
-                @NotNull String name,
-                double amount,
-                @SerializedName("operation") int operationType,
-                @SerializedName("equipment_slot") int equipmentSlot
-        ) {
+        @Getter
+        @Accessors(fluent = true)
+        @RequiredArgsConstructor
+        final class Modifier {
+            final static String ANY_EQUIPMENT_SLOT_GROUP = "any";
+
+            @Getter(AccessLevel.NONE)
+            @Nullable
+            @SerializedName("uuid")
+            private UUID uuid = null;
+
+            // Since 1.21.1: Name, amount, operation, slotGroup
+            @SerializedName("name")
+            private String name;
+
+            @SerializedName("amount")
+            private double amount;
+
+            @SerializedName("operation")
+            private int operation;
+
+            @SerializedName("equipment_slot")
+            @Deprecated(since = "3.7")
+            private int equipmentSlot;
+
+            @SerializedName("equipment_slot_group")
+            private String slotGroup = ANY_EQUIPMENT_SLOT_GROUP;
+
+            public Modifier(@NotNull String name, double amount, int operation, @NotNull String slotGroup) {
+                this.name = name;
+                this.amount = amount;
+                this.operation = operation;
+                this.slotGroup = slotGroup;
+            }
+
+            @Deprecated(since = "3.7")
+            public Modifier(@NotNull UUID uuid, @NotNull String name, double amount, int operation, int equipmentSlot) {
+                this.name = name;
+                this.amount = amount;
+                this.operation = operation;
+                this.equipmentSlot = equipmentSlot;
+            }
 
             @Override
             public boolean equals(Object obj) {
-                return obj instanceof Modifier modifier && modifier.uuid.equals(uuid);
+                if (obj instanceof Modifier other) {
+                    if (uuid != null && other.uuid != null) {
+                        return uuid.equals(other.uuid);
+                    }
+                    return name.equals(other.name);
+                }
+                return super.equals(obj);
             }
 
             public double modify(double value) {
-                return switch (operationType) {
+                return switch (operation) {
                     case 0 -> value + amount;
                     case 1 -> value * amount;
                     case 2 -> value * (1 + amount);
                     default -> value;
                 };
             }
+
+            public boolean hasUuid() {
+                return uuid != null;
+            }
+
+            @NotNull
+            public UUID uuid() {
+                return uuid != null ? uuid : UUID.nameUUIDFromBytes(name.getBytes());
+            }
+
         }
 
         default Optional<Attribute> getAttribute(@NotNull Key key) {

common/src/main/java/net/william278/husksync/data/DataException.java

@@ -45,13 +45,13 @@ public class DataException extends IllegalStateException {
     @AllArgsConstructor
     public enum Reason {
         INVALID_MINECRAFT_VERSION((plugin, snapshot) -> String.format("The Minecraft version of the snapshot (%s) is " +
-                        "newer than the server's version (%s). Ensure each server is on the same version of Minecraft.",
+                                                                      "newer than the server's version (%s). Ensure each server is on the same version of Minecraft.",
                 snapshot.getMinecraftVersion(), plugin.getMinecraftVersion())),
         INVALID_FORMAT_VERSION((plugin, snapshot) -> String.format("The format version of the snapshot (%s) is newer " +
-                        "than the server's version (%s). Ensure each server is running the same version of HuskSync.",
+                                                                   "than the server's version (%s). Ensure each server is running the same version of HuskSync.",
                 snapshot.getFormatVersion(), DataSnapshot.CURRENT_FORMAT_VERSION)),
         INVALID_PLATFORM_TYPE((plugin, snapshot) -> String.format("The platform type of the snapshot (%s) does " +
-                        "not match the server's platform type (%s). Ensure each server has the same platform type.",
+                                                                  "not match the server's platform type (%s). Ensure each server has the same platform type.",
                 snapshot.getPlatformType(), plugin.getPlatformType())),
         NO_LEGACY_CONVERTER((plugin, snapshot) -> String.format("No legacy converter to convert format version: %s",
                 snapshot.getFormatVersion()));

common/src/main/java/net/william278/husksync/data/DataHolder.java

@@ -30,8 +30,11 @@ public interface DataHolder {
     @NotNull
     Map<Identifier, Data> getData();
 
-    default Optional<? extends Data> getData(@NotNull Identifier identifier) {
-        return Optional.ofNullable(getData().get(identifier));
+    default Optional<? extends Data> getData(@NotNull Identifier id) {
+        if (getData().containsKey(id)) {
+            return Optional.of(getData().get(id));
+        }
+        return Optional.empty();
     }
 
     default void setData(@NotNull Identifier identifier, @NotNull Data data) {

common/src/main/java/net/william278/husksync/data/DataSnapshot.java

@@ -391,23 +391,26 @@ public class DataSnapshot {
         @ApiStatus.Internal
         private Map<Identifier, Data> deserializeData(@NotNull HuskSync plugin) {
             return data.entrySet().stream()
-                    .map((entry) -> plugin.getIdentifier(entry.getKey()).map(id -> Map.entry(
-                            id, plugin.getSerializers().get(id).deserialize(entry.getValue(), getMinecraftVersion())
-                    )).orElse(null))
-                    .filter(Objects::nonNull)
-                    .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+                    .filter(e -> plugin.getIdentifier(e.getKey()).isPresent())
+                    .map(entry -> Map.entry(plugin.getIdentifier(entry.getKey()).orElseThrow(), entry.getValue()))
+                    .collect(Collectors.toMap(
+                            Map.Entry::getKey,
+                            entry -> plugin.deserializeData(entry.getKey(), entry.getValue(), getMinecraftVersion()),
+                            (a, b) -> a,
+                            HashMap::new
+                    ));
         }
 
         @NotNull
         @ApiStatus.Internal
         private Map<String, String> serializeData(@NotNull HuskSync plugin) {
             return deserialized.entrySet().stream()
-                    .map((entry) -> Map.entry(entry.getKey().toString(),
-                            Objects.requireNonNull(
-                                    plugin.getSerializers().get(entry.getKey()),
-                                    String.format("No serializer found for %s", entry.getKey())
-                            ).serialize(entry.getValue())))
-                    .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
+                    .collect(Collectors.toMap(
+                            entry -> entry.getKey().toString(),
+                            entry -> plugin.serializeData(entry.getKey(), entry.getValue()),
+                            (a, b) -> a,
+                            HashMap::new
+                    ));
         }
 
         /**
@@ -421,6 +424,20 @@ public class DataSnapshot {
             return deserialized;
         }
 
+        /**
+         * Get a sorted iterable of the snapshots the snapshot is holding
+         *
+         * @return The data map
+         * @since 3.8.2
+         */
+        @NotNull
+        @ApiStatus.Internal
+        public Iterable<Map.Entry<Identifier, Data>> getSortedIterable() {
+            final TreeMap<Identifier, Data> tree = Maps.newTreeMap(SerializerRegistry.DEPENDENCY_ORDER_COMPARATOR);
+            tree.putAll(deserialized);
+            return tree.entrySet();
+        }
+
         /**
          * Pack the {@link DataSnapshot} into a {@link DataSnapshot.Packed packed} snapshot
          *
@@ -880,6 +897,20 @@ public class DataSnapshot {
          */
         public static final SaveCause BACKUP_RESTORE = of("BACKUP_RESTORE");
 
+        /**
+         * Indicates data was saved from executing the {@code /userdata save} command
+         *
+         * @since 3.8
+         */
+        public static final SaveCause SAVE_COMMAND = of("SAVE_COMMAND", true);
+
+        /**
+         * Indicates data was saved from executing the {@code /userdata dump} command
+         *
+         * @since 3.8
+         */
+        public static final SaveCause DUMP_COMMAND = of("DUMP_COMMAND", true);
+
         /**
          * Indicates data was saved by an API call
          *
@@ -913,6 +944,8 @@ public class DataSnapshot {
 
         private final boolean fireDataSaveEvent;
 
+        private static Map<String, SaveCause> registry;
+
         /**
          * Get or create a {@link SaveCause} from a name
          *
@@ -921,7 +954,7 @@ public class DataSnapshot {
          */
         @NotNull
         public static SaveCause of(@NotNull String name) {
-            return new SaveCause(name.length() > 32 ? name.substring(0, 31) : name, true);
+            return of(name, true);
         }
 
         /**
@@ -933,7 +966,14 @@ public class DataSnapshot {
          */
         @NotNull
         public static SaveCause of(@NotNull String name, boolean firesSaveEvent) {
-            return new SaveCause(name.length() > 32 ? name.substring(0, 31) : name, firesSaveEvent);
+            name = name.length() > 32 ? name.substring(0, 31) : name;
+
+            if (registry == null) registry = new HashMap<>();
+            if (registry.containsKey(name)) return registry.get(name);
+
+            SaveCause cause = new SaveCause(name, firesSaveEvent);
+            registry.put(cause.name(), cause);
+            return cause;
         }
 
         @NotNull
@@ -944,11 +984,10 @@ public class DataSnapshot {
         }
 
         @NotNull
+        @ApiStatus.Obsolete
         public static SaveCause[] values() {
-            return new SaveCause[]{
-                    DISCONNECT, WORLD_SAVE, DEATH, SERVER_SHUTDOWN, INVENTORY_COMMAND, ENDERCHEST_COMMAND,
-                    BACKUP_RESTORE, API, MPDB_MIGRATION, LEGACY_MIGRATION, CONVERTED_FROM_V2
-            };
+            if (registry == null) registry = new HashMap<>();
+            return registry.values().toArray(new SaveCause[0]);
         }
     }
 

common/src/main/java/net/william278/husksync/data/Identifier.java

@@ -19,40 +19,88 @@
 
 package net.william278.husksync.data;
 
+import lombok.*;
 import net.kyori.adventure.key.InvalidKeyException;
 import net.kyori.adventure.key.Key;
+import net.kyori.adventure.key.KeyPattern;
 import org.intellij.lang.annotations.Subst;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.Map;
+import java.util.Set;
 import java.util.stream.Stream;
 
 /**
  * Identifiers of different types of {@link Data}s
  */
-public class Identifier {
+@Getter
+public class Identifier implements Comparable<Identifier> {
 
-    public static Identifier INVENTORY = huskSync("inventory", true);
-    public static Identifier ENDER_CHEST = huskSync("ender_chest", true);
-    public static Identifier POTION_EFFECTS = huskSync("potion_effects", true);
-    public static Identifier ADVANCEMENTS = huskSync("advancements", true);
-    public static Identifier LOCATION = huskSync("location", false);
-    public static Identifier STATISTICS = huskSync("statistics", true);
-    public static Identifier HEALTH = huskSync("health", true);
-    public static Identifier HUNGER = huskSync("hunger", true);
-    public static Identifier ATTRIBUTES = huskSync("attributes", true);
-    public static Identifier EXPERIENCE = huskSync("experience", true);
-    public static Identifier GAME_MODE = huskSync("game_mode", true);
-    public static Identifier FLIGHT_STATUS = huskSync("flight_status", true);
-    public static Identifier PERSISTENT_DATA = huskSync("persistent_data", true);
+    // Namespace for built-in identifiers
+    private static final @KeyPattern String DEFAULT_NAMESPACE = "husksync";
+
+    // Built-in identifiers
+    public static final Identifier PERSISTENT_DATA = huskSync("persistent_data", true);
+    public static final Identifier INVENTORY = huskSync("inventory", true);
+    public static final Identifier ENDER_CHEST = huskSync("ender_chest", true);
+    public static final Identifier ADVANCEMENTS = huskSync("advancements", true);
+    public static final Identifier STATISTICS = huskSync("statistics", true);
+    public static final Identifier POTION_EFFECTS = huskSync("potion_effects", true);
+    public static final Identifier GAME_MODE = huskSync("game_mode", true);
+    public static final Identifier FLIGHT_STATUS = huskSync("flight_status", true,
+            Dependency.optional("game_mode")
+    );
+    public static final Identifier ATTRIBUTES = huskSync("attributes", true,
+            Dependency.optional("inventory"),
+            Dependency.optional("potion_effects")
+    );
+    public static final Identifier HEALTH = huskSync("health", true,
+            Dependency.optional("attributes")
+    );
+    public static final Identifier HUNGER = huskSync("hunger", true,
+            Dependency.optional("attributes")
+    );
+    public static final Identifier EXPERIENCE = huskSync("experience", true,
+            Dependency.optional("advancements")
+    );
+    public static final Identifier LOCATION = huskSync("location", false,
+            Dependency.optional("flight_status"),
+            Dependency.optional("potion_effects")
+    );
 
     private final Key key;
-    private final boolean configDefault;
+    private final boolean enabledByDefault;
+    @Getter
+    private final Set<Dependency> dependencies;
+    @Setter
+    @Getter
+    public boolean enabled;
 
-    private Identifier(@NotNull Key key, boolean configDefault) {
+    private Identifier(@NotNull Key key, boolean enabledByDefault, @NotNull Set<Dependency> dependencies) {
         this.key = key;
-        this.configDefault = configDefault;
+        this.enabledByDefault = enabledByDefault;
+        this.enabled = enabledByDefault;
+        this.dependencies = dependencies;
+    }
+
+    /**
+     * Create an identifier from a {@link Key}
+     *
+     * @param key          the key
+     * @param dependencies the dependencies
+     * @return the identifier
+     * @since 3.5.4
+     */
+    @NotNull
+    public static Identifier from(@NotNull Key key, @NotNull Set<Dependency> dependencies) {
+        if (key.namespace().equals(DEFAULT_NAMESPACE)) {
+            throw new IllegalArgumentException("Cannot register with %s as key namespace!".formatted(key.namespace()));
+        }
+        return new Identifier(key, true, dependencies);
     }
 
     /**
@@ -64,10 +112,7 @@ public class Identifier {
      */
     @NotNull
     public static Identifier from(@NotNull Key key) {
-        if (key.namespace().equals("husksync")) {
-            throw new IllegalArgumentException("You cannot register a key with \"husksync\" as the namespace!");
-        }
-        return new Identifier(key, true);
+        return from(key, Collections.emptySet());
     }
 
     /**
@@ -83,25 +128,34 @@ public class Identifier {
         return from(Key.key(plugin, name));
     }
 
+    /**
+     * Create an identifier from a namespace, value, and dependencies
+     *
+     * @param plugin       the namespace
+     * @param name         the value
+     * @param dependencies the dependencies
+     * @return the identifier
+     * @since 3.5.4
+     */
+    @NotNull
+    public static Identifier from(@Subst("plugin") @NotNull String plugin, @Subst("null") @NotNull String name,
+                                  @NotNull Set<Dependency> dependencies) {
+        return from(Key.key(plugin, name), dependencies);
+    }
+
+    // Return an identifier with a HuskSync namespace
     @NotNull
     private static Identifier huskSync(@Subst("null") @NotNull String name,
                                        boolean configDefault) throws InvalidKeyException {
-        return new Identifier(Key.key("husksync", name), configDefault);
+        return new Identifier(Key.key(DEFAULT_NAMESPACE, name), configDefault, Collections.emptySet());
     }
 
+    // Return an identifier with a HuskSync namespace
     @NotNull
-    @SuppressWarnings("unused")
-    private static Identifier parse(@NotNull String key) throws InvalidKeyException {
-        return huskSync(key, true);
-    }
-
-    public boolean isEnabledByDefault() {
-        return configDefault;
-    }
-
-    @NotNull
-    private Map.Entry<String, Boolean> getConfigEntry() {
-        return Map.entry(getKeyValue(), configDefault);
+    private static Identifier huskSync(@Subst("null") @NotNull String name,
+                                       @SuppressWarnings("SameParameterValue") boolean configDefault,
+                                       @NotNull Dependency... dependents) throws InvalidKeyException {
+        return new Identifier(Key.key(DEFAULT_NAMESPACE, name), configDefault, Set.of(dependents));
     }
 
     /**
@@ -122,6 +176,17 @@ public class Identifier {
                 .toArray(Map.Entry[]::new));
     }
 
+    /**
+     * Returns {@code true} if the identifier depends on the given identifier
+     *
+     * @param identifier the identifier to check
+     * @return {@code true} if the identifier depends on the given identifier
+     * @since 3.5.4
+     */
+    public boolean dependsOn(@NotNull Identifier identifier) {
+        return dependencies.contains(Dependency.required(identifier.key));
+    }
+
     /**
      * Get the namespace of the identifier
      *
@@ -148,13 +213,30 @@ public class Identifier {
      * @return {@code false} if {@link #getKeyNamespace()} returns "husksync"; {@code true} otherwise
      */
     public boolean isCustom() {
-        return !getKeyNamespace().equals("husksync");
+        return !getKeyNamespace().equals(DEFAULT_NAMESPACE);
+    }
+
+    /**
+     * Get the minimal string representation of this key.
+     * <p>
+     * If the namespace of the key is {@link #DEFAULT_NAMESPACE}, only the key value will be returned.
+     *
+     * @return the minimal string key representation
+     * @since 3.8
+     */
+    @NotNull
+    public String asMinimalString() {
+        if (getKey().namespace().equals(DEFAULT_NAMESPACE)) {
+            return getKey().value();
+        }
+        return getKey().asString();
     }
 
     /**
      * Returns the identifier as a string (the key)
      *
      * @return the identifier as a string
+     * @since 3.0
      */
     @NotNull
     @Override
@@ -163,17 +245,123 @@ public class Identifier {
     }
 
     /**
-     * Returns {@code true} if the given object is an identifier with the same key as this identifier
+     * Return whether this Identifier is equal to another Identifier
      *
-     * @param obj the object to compare
-     * @return {@code true} if the given object is an identifier with the same key as this identifier
+     * @param obj another object
+     * @return {@code true} if this identifier matches the identifier of {@code obj}
+     * @since 3.8
      */
     @Override
-    public boolean equals(Object obj) {
+    public boolean equals(@Nullable Object obj) {
         if (obj instanceof Identifier other) {
-            return key.equals(other.key);
+            return asMinimalString().equals(other.asMinimalString());
         }
         return false;
     }
 
+    /**
+     * Get the hash code of the Identifier (equivalent to {@link #asMinimalString()}->{@code #hashCode()}
+     *
+     * @return the hash code
+     * @since 3.8
+     */
+    @Override
+    public int hashCode() {
+        return asMinimalString().hashCode();
+    }
+
+    // Get the config entry for the identifier
+    @NotNull
+    private Map.Entry<String, Boolean> getConfigEntry() {
+        return Map.entry(getKeyValue(), enabledByDefault);
+    }
+
+    // Comparable; always sort this Identifier after any dependencies
+    @Override
+    public int compareTo(@NotNull Identifier o) {
+        if (this.dependsOn(o)) return 1;
+        if (o.dependsOn(this)) return -1;
+        return this.key.compareTo(o.key);
+    }
+
+    /**
+     * Compares two identifiers based on their dependencies.
+     * <p>
+     * If this identifier contains a dependency on the other, it should come after & vice versa
+     *
+     * @since 3.5.4
+     */
+    @NoArgsConstructor(access = AccessLevel.PACKAGE)
+    static class DependencyOrderComparator implements Comparator<Identifier> {
+
+        @Override
+        public int compare(@NotNull Identifier i1, @NotNull Identifier i2) {
+            if (i1.equals(i2)) {
+                return 0;
+            }
+            if (i1.dependsOn(i2)) {
+                if (i2.dependsOn(i1)) {
+                    throw new IllegalArgumentException(
+                            "Found circular dependency between %s and %s".formatted(i1.getKey(), i2.getKey())
+                    );
+                }
+                return 1;
+            }
+            return -1;
+        }
+
+    }
+
+    /**
+     * Represents a data dependency of an identifier, used to determine the order in which data is applied to users
+     *
+     * @since 3.5.4
+     */
+    @Getter
+    @AllArgsConstructor(access = AccessLevel.PRIVATE)
+    public static class Dependency {
+        /**
+         * Key of the data dependency see {@code Identifier#key()}
+         */
+        private Key key;
+        /**
+         * Whether the data dependency is required to be present & enabled for the dependant data to enabled
+         */
+        private boolean required;
+
+        @NotNull
+        protected static Dependency required(@NotNull Key identifier) {
+            return new Dependency(identifier, true);
+        }
+
+        @NotNull
+        public static Dependency optional(@NotNull Key identifier) {
+            return new Dependency(identifier, false);
+        }
+
+        @NotNull
+        @SuppressWarnings("SameParameterValue")
+        private static Dependency required(@Subst("null") @NotNull String identifier) {
+            return required(Key.key("husksync", identifier));
+        }
+
+        @NotNull
+        private static Dependency optional(@Subst("null") @NotNull String identifier) {
+            return optional(Key.key("husksync", identifier));
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj instanceof Dependency other) {
+                return key.equals(other.key);
+            }
+            return false;
+        }
+
+        @Override
+        public int hashCode() {
+            return key.toString().hashCode();
+        }
+    }
+
 }

common/src/main/java/net/william278/husksync/data/Serializer.java

@@ -20,6 +20,8 @@
 package net.william278.husksync.data;
 
 import net.william278.desertwell.util.Version;
+import net.william278.husksync.HuskSync;
+import net.william278.husksync.adapter.Adaptable;
 import org.jetbrains.annotations.NotNull;
 
 public interface Serializer<T extends Data> {
@@ -46,4 +48,26 @@ public interface Serializer<T extends Data> {
     }
 
 
+    class Json<T extends Data & Adaptable> implements Serializer<T> {
+
+        private final HuskSync plugin;
+        private final Class<T> type;
+
+        public Json(@NotNull HuskSync plugin, @NotNull Class<T> type) {
+            this.type = type;
+            this.plugin = plugin;
+        }
+
+        @Override
+        public T deserialize(@NotNull String serialized) throws DeserializationException {
+            return plugin.getDataAdapter().fromJson(serialized, type);
+        }
+
+        @NotNull
+        @Override
+        public String serialize(@NotNull T element) throws SerializationException {
+            return plugin.getDataAdapter().toJson(element);
+        }
+
+    }
 }

common/src/main/java/net/william278/husksync/data/SerializerRegistry.java

@@ -0,0 +1,172 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.data;
+
+import net.william278.desertwell.util.Version;
+import net.william278.husksync.HuskSync;
+import org.jetbrains.annotations.ApiStatus;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.*;
+import java.util.logging.Level;
+import java.util.stream.Collectors;
+
+public interface SerializerRegistry {
+
+    // Comparator for ordering identifiers based on dependency
+    @NotNull
+    @ApiStatus.Internal
+    Comparator<Identifier> DEPENDENCY_ORDER_COMPARATOR = new Identifier.DependencyOrderComparator();
+
+    /**
+     * Returns the data serializer for the given {@link Identifier}
+     *
+     * @since 3.0
+     */
+    @NotNull
+    <T extends Data> Map<Identifier, Serializer<T>> getSerializers();
+
+    /**
+     * Register a data serializer for the given {@link Identifier}
+     *
+     * @param id         the {@link Identifier}
+     * @param serializer the {@link Serializer}
+     * @since 3.0
+     */
+    @SuppressWarnings("unchecked")
+    default void registerSerializer(@NotNull Identifier id, @NotNull Serializer<? extends Data> serializer) {
+        if (id.isCustom()) {
+            getPlugin().log(Level.INFO, "Registered custom data type: %s".formatted(id));
+        }
+        id.setEnabled(id.isCustom() || getPlugin().getSettings().getSynchronization().isFeatureEnabled(id));
+        getSerializers().put(id, (Serializer<Data>) serializer);
+    }
+
+    /**
+     * Ensure dependencies for identifiers that have required dependencies are met
+     * <p>
+     * This checks the dependencies of all registered identifiers and throws an {@link IllegalStateException}
+     * if a dependency has not been registered or enabled via the config
+     *
+     * @since 3.5.4
+     */
+    default void validateDependencies() throws IllegalStateException {
+        getSerializers().keySet().stream().filter(Identifier::isEnabled)
+                .forEach(identifier -> {
+                    final List<String> unmet = identifier.getDependencies().stream()
+                            .filter(Identifier.Dependency::isRequired)
+                            .filter(dep -> !isDataTypeAvailable(dep.getKey().asString()))
+                            .map(dep -> dep.getKey().asString()).toList();
+                    if (!unmet.isEmpty()) {
+                        identifier.setEnabled(false);
+                        getPlugin().log(Level.WARNING, "Disabled %s syncing as the following types need to be on: %s"
+                                .formatted(identifier, String.join(", ", unmet)));
+                    }
+                });
+    }
+
+    /**
+     * Get the {@link Identifier} for the given key
+     *
+     * @since 3.0
+     */
+    default Optional<Identifier> getIdentifier(@NotNull String key) {
+        return getSerializers().keySet().stream().filter(e -> e.toString().equals(key)).findFirst();
+    }
+
+    /**
+     * Get a data serializer for the given {@link Identifier}
+     *
+     * @param identifier the {@link Identifier} to get the serializer for
+     * @return the {@link Serializer} for the given {@link Identifier}
+     * @since 3.5.4
+     */
+    default Optional<Serializer<Data>> getSerializer(@NotNull Identifier identifier) {
+        return Optional.ofNullable(getSerializers().get(identifier));
+    }
+
+    /**
+     * Serialize data for the given {@link Identifier}
+     *
+     * @param identifier the {@link Identifier} to serialize data for
+     * @param data       the data to serialize
+     * @return the serialized data
+     * @throws IllegalArgumentException if no serializer is found for the given {@link Identifier}
+     * @since 3.5.4
+     */
+    @NotNull
+    default String serializeData(@NotNull Identifier identifier, @NotNull Data data) throws IllegalStateException {
+        return getSerializer(identifier).map(serializer -> serializer.serialize(data))
+                .orElseThrow(() -> new IllegalStateException("No serializer found for %s".formatted(identifier)));
+    }
+
+    /**
+     * Deserialize data of a given {@link Version Minecraft version} for the given {@link Identifier data identifier}
+     *
+     * @param identifier    the {@link Identifier} to deserialize data for
+     * @param data          the data to deserialize
+     * @param dataMcVersion the Minecraft version of the data
+     * @return the deserialized data
+     * @throws IllegalStateException if no serializer is found for the given {@link Identifier}
+     * @since 3.6.4
+     */
+    @NotNull
+    default Data deserializeData(@NotNull Identifier identifier, @NotNull String data,
+                                 @NotNull Version dataMcVersion) throws IllegalStateException {
+        return getSerializer(identifier).map(serializer -> serializer.deserialize(data, dataMcVersion)).orElseThrow(
+                () -> new IllegalStateException("No serializer found for %s".formatted(identifier))
+        );
+    }
+
+    /**
+     * Deserialize data for the given {@link Identifier data identifier}
+     *
+     * @param identifier the {@link Identifier} to deserialize data for
+     * @param data       the data to deserialize
+     * @return the deserialized data
+     * @since 3.5.4
+     * @deprecated Use {@link #deserializeData(Identifier, String, Version)} instead
+     */
+    @NotNull
+    @Deprecated(since = "3.6.5")
+    default Data deserializeData(@NotNull Identifier identifier, @NotNull String data) {
+        return deserializeData(identifier, data, getPlugin().getMinecraftVersion());
+    }
+
+    /**
+     * Get the list of registered data types, in dependency order
+     *
+     * @return the list of registered data types
+     * @since 3.0
+     */
+    @NotNull
+    default List<Identifier> getRegisteredDataTypes() {
+        return getSerializers().keySet().stream().sorted(DEPENDENCY_ORDER_COMPARATOR).toList();
+    }
+
+    // Returns if a data type is available and enabled in the config
+    private boolean isDataTypeAvailable(@NotNull String key) {
+        return getIdentifier(key).map(Identifier::isEnabled).orElse(false);
+    }
+
+    @NotNull
+    HuskSync getPlugin();
+
+}

common/src/main/java/net/william278/husksync/data/UserDataHolder.java

@@ -27,6 +27,7 @@ import org.jetbrains.annotations.NotNull;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.logging.Level;
+import java.util.stream.Collectors;
 
 /**
  * A holder of data in the form of {@link Data}s, which can be synced
@@ -34,7 +35,7 @@ import java.util.logging.Level;
 public interface UserDataHolder extends DataHolder {
 
     /**
-     * Get the data that is enabled for syncing in the config
+     * Get the data enabled for syncing in the config
      *
      * @return the data that is enabled for syncing
      * @since 3.0
@@ -43,10 +44,14 @@ public interface UserDataHolder extends DataHolder {
     @NotNull
     default Map<Identifier, Data> getData() {
         return getPlugin().getRegisteredDataTypes().stream()
-                .filter(type -> type.isCustom() || getPlugin().getSettings().getSynchronization().isFeatureEnabled(type))
+                .filter(Identifier::isEnabled)
                 .map(id -> Map.entry(id, getData(id)))
                 .filter(data -> data.getValue().isPresent())
-                .collect(HashMap::new, (map, data) -> map.put(data.getKey(), data.getValue().get()), HashMap::putAll);
+                .collect(Collectors.toMap(
+                        Map.Entry::getKey,
+                        entry -> entry.getValue().get(),
+                        (a, b) -> a, HashMap::new
+                ));
     }
 
     /**
@@ -75,11 +80,21 @@ public interface UserDataHolder extends DataHolder {
         return DataSnapshot.builder(getPlugin()).data(this.getData()).saveCause(saveCause).buildAndPack();
     }
 
+    /**
+     * Returns whether data can be applied to the holder at this time
+     *
+     * @return {@code true} if data can be applied, otherwise false
+     */
+    default boolean cannotApplySnapshot() {
+        return false;
+    }
+
     /**
      * Deserialize and apply a data snapshot to this data owner
      * <p>
      * This method will deserialize the data on the current thread, then synchronously apply it on
-     * the main server thread.
+     * the main server thread. The order data will be applied is determined based on the dependencies of
+     * each data type (see {@link Identifier.Dependency}).
      * </p>
      * The {@code runAfter} callback function will be run after the snapshot has been applied.
      *
@@ -89,9 +104,12 @@ public interface UserDataHolder extends DataHolder {
      * @since 3.0
      */
     default void applySnapshot(@NotNull DataSnapshot.Packed snapshot, @NotNull ThrowingConsumer<Boolean> runAfter) {
-        final HuskSync plugin = getPlugin();
+        if (cannotApplySnapshot()) {
+            return;
+        }
 
         // Unpack the snapshot
+        final HuskSync plugin = getPlugin();
         final DataSnapshot.Unpacked unpacked;
         try {
             unpacked = snapshot.unpack(plugin);
@@ -103,15 +121,22 @@ public interface UserDataHolder extends DataHolder {
 
         // Synchronously attempt to apply the snapshot
         plugin.runSync(() -> {
+            if (cannotApplySnapshot()) {
+                return;
+            }
+
             try {
-                for (Map.Entry<Identifier, Data> entry : unpacked.getData().entrySet()) {
+                for (Map.Entry<Identifier, Data> entry : unpacked.getSortedIterable()) {
                     final Identifier identifier = entry.getKey();
-                    if (plugin.getSettings().getSynchronization().isFeatureEnabled(identifier)) {
-                        if (identifier.isCustom()) {
-                            getCustomDataStore().put(identifier, entry.getValue());
-                        }
-                        entry.getValue().apply(this, plugin);
+                    if (!identifier.isEnabled()) {
+                        continue;
                     }
+
+                    // Apply the identified data
+                    if (identifier.isCustom()) {
+                        getCustomDataStore().put(identifier, entry.getValue());
+                    }
+                    entry.getValue().apply(this, plugin);
                 }
             } catch (Throwable e) {
                 plugin.log(Level.SEVERE, String.format("Failed to apply data snapshot to %s", getUsername()), e);

common/src/main/java/net/william278/husksync/database/Database.java

@@ -24,8 +24,10 @@ import net.william278.husksync.HuskSync;
 import net.william278.husksync.config.Settings;
 import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.User;
+import org.intellij.lang.annotations.Language;
 import org.jetbrains.annotations.Blocking;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
@@ -56,8 +58,8 @@ public abstract class Database {
     @SuppressWarnings("SameParameterValue")
     @NotNull
     protected final String[] getSchemaStatements(@NotNull String schemaFileName) throws IOException {
-        return formatStatementTables(new String(Objects.requireNonNull(plugin.getResource(schemaFileName))
-                .readAllBytes(), StandardCharsets.UTF_8)).split(";");
+        return Arrays.stream(formatStatementTables(new String(Objects.requireNonNull(plugin.getResource(schemaFileName))
+                .readAllBytes(), StandardCharsets.UTF_8)).split(";")).filter(s -> !s.isBlank()).toArray(String[]::new);
     }
 
     /**
@@ -67,10 +69,12 @@ public abstract class Database {
      * @return the formatted statement, with table placeholders replaced with the correct names
      */
     @NotNull
-    protected final String formatStatementTables(@NotNull String sql) {
+    protected final String formatStatementTables(@NotNull @Language("SQL") String sql) {
         final Settings.DatabaseSettings settings = plugin.getSettings().getDatabase();
         return sql.replaceAll("%users_table%", settings.getTableName(TableName.USERS))
-                .replaceAll("%user_data_table%", settings.getTableName(TableName.USER_DATA));
+                .replaceAll("%user_data_table%", settings.getTableName(TableName.USER_DATA))
+                .replaceAll("%map_data_table%", settings.getTableName(TableName.MAP_DATA))
+                .replaceAll("%map_ids_table%", settings.getTableName(TableName.MAP_IDS));
     }
 
     /**
@@ -107,6 +111,14 @@ public abstract class Database {
     @Blocking
     public abstract Optional<User> getUserByName(@NotNull String username);
 
+    /**
+     * Get all users
+     *
+     * @return A list of all users
+     */
+    @NotNull
+    @Blocking
+    public abstract List<User> getAllUsers();
 
     /**
      * Get the latest data snapshot for a user.
@@ -127,6 +139,15 @@ public abstract class Database {
     @NotNull
     public abstract List<DataSnapshot.Packed> getAllSnapshots(@NotNull User user);
 
+    /**
+     * Get the number of unpinned {@link DataSnapshot}s a user has
+     *
+     * @param user the user to count snapshots for
+     * @return the number of snapshots this user has saved
+     */
+    @Blocking
+    public abstract int getUnpinnedSnapshotCount(@NotNull User user);
+
     /**
      * Gets a specific {@link DataSnapshot} entry for a user from the database, by its UUID.
      *
@@ -238,6 +259,58 @@ public abstract class Database {
         });
     }
 
+    /**
+     * Write map data to a database
+     *
+     * @param serverName Name of the server the map originates from
+     * @param mapId      Original map ID
+     * @param data       Map data
+     */
+    @Blocking
+    public abstract void saveMapData(@NotNull String serverName, int mapId, byte @NotNull [] data);
+
+    /**
+     * Read map data from a database
+     *
+     * @param serverName Name of the server the map originates from
+     * @param mapId      Original map ID
+     * @return the map data bytes, or null if not found
+     */
+    @Blocking
+    public abstract byte @Nullable [] getMapData(@NotNull String serverName, int mapId);
+
+    /**
+     * Reverse lookup: given a local map binding, find the origin server and map ID.
+     *
+     * @param serverName Name of the local server (to_server_name in the binding)
+     * @param mapId      Local map ID on this server (to_id in the binding)
+     * @return Map.Entry with origin server name (key) and origin map ID (value), or null if not found
+     */
+    @Blocking
+    public abstract @Nullable Map.Entry<String, Integer> getMapBinding(@NotNull String serverName, int mapId);
+
+    /**
+     * Bind map IDs across different servers
+     *
+     * @param fromServerName Name of the server the map originates from
+     * @param fromMapId      Original map ID
+     * @param toServerName   Name of the new server
+     * @param toMapId        New map ID
+     */
+    @Blocking
+    public abstract void setMapBinding(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName, int toMapId);
+
+    /**
+     * Get map ID for the new server
+     *
+     * @param fromServerName Name of the server the map originates from
+     * @param fromMapId      Original map ID
+     * @param toServerName   Name of the new server
+     * @return New map ID or -1 if not found
+     */
+    @Blocking
+    public abstract int getBoundMapId(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName);
+
     /**
      * Wipes <b>all</b> {@link User} entries from the database.
      * <b>This should only be used when preparing tables for a data migration.</b>
@@ -275,7 +348,9 @@ public abstract class Database {
     @Getter
     public enum TableName {
         USERS("husksync_users"),
-        USER_DATA("husksync_user_data");
+        USER_DATA("husksync_user_data"),
+        MAP_DATA("husksync_map_data"),
+        MAP_IDS("husksync_map_ids");
 
         private final String defaultName;
 

common/src/main/java/net/william278/husksync/database/MongoDbDatabase.java

@@ -35,13 +35,11 @@ import org.bson.conversions.Bson;
 import org.bson.types.Binary;
 import org.jetbrains.annotations.Blocking;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.time.Instant;
 import java.time.OffsetDateTime;
-import java.util.List;
-import java.util.Optional;
-import java.util.TimeZone;
-import java.util.UUID;
+import java.util.*;
 import java.util.logging.Level;
 
 public class MongoDbDatabase extends Database {
@@ -50,17 +48,17 @@ public class MongoDbDatabase extends Database {
 
     private final String usersTable;
     private final String userDataTable;
+    private final String mapDataTable;
+    private final String mapIdsTable;
+
     public MongoDbDatabase(@NotNull HuskSync plugin) {
         super(plugin);
         this.usersTable = plugin.getSettings().getDatabase().getTableName(TableName.USERS);
         this.userDataTable = plugin.getSettings().getDatabase().getTableName(TableName.USER_DATA);
+        this.mapDataTable = plugin.getSettings().getDatabase().getTableName(TableName.MAP_DATA);
+        this.mapIdsTable = plugin.getSettings().getDatabase().getTableName(TableName.MAP_IDS);
     }
 
-    /**
-     * Initialize the database and ensure tables are present; create tables if they do not exist.
-     *
-     * @throws IllegalStateException if the database could not be initialized
-     */
     @Override
     public void initialize() throws IllegalStateException {
         final Settings.DatabaseSettings.DatabaseCredentials credentials = plugin.getSettings().getDatabase().getCredentials();
@@ -68,12 +66,22 @@ public class MongoDbDatabase extends Database {
             ConnectionString URI = createConnectionURI(credentials);
             mongoConnectionHandler = new MongoConnectionHandler(URI, credentials.getDatabase());
             mongoCollectionHelper = new MongoCollectionHelper(mongoConnectionHandler);
+
+            // Check config for if tables should be created
+            if (!plugin.getSettings().getDatabase().isCreateTables()) return;
+
             if (mongoCollectionHelper.getCollection(usersTable) == null) {
                 mongoCollectionHelper.createCollection(usersTable);
             }
             if (mongoCollectionHelper.getCollection(userDataTable) == null) {
                 mongoCollectionHelper.createCollection(userDataTable);
             }
+            if (mongoCollectionHelper.getCollection(mapDataTable) == null) {
+                mongoCollectionHelper.createCollection(mapDataTable);
+            }
+            if (mongoCollectionHelper.getCollection(mapIdsTable) == null) {
+                mongoCollectionHelper.createCollection(mapIdsTable);
+            }
         } catch (Exception e) {
             throw new IllegalStateException("Failed to establish a connection to the MongoDB database. " +
                     "Please check the supplied database credentials in the config file", e);
@@ -93,27 +101,22 @@ public class MongoDbDatabase extends Database {
         return new ConnectionString(baseURI);
     }
 
-    /**
-     * Ensure a {@link User} has an entry in the database and that their username is up-to-date
-     *
-     * @param user The {@link User} to ensure
-     */
     @Blocking
     @Override
     public void ensureUser(@NotNull User user) {
         try {
             getUser(user.getUuid()).ifPresentOrElse(
                     existingUser -> {
-                        if (!existingUser.getUsername().equals(user.getUsername())) {
+                        if (!existingUser.getName().equals(user.getName())) {
                             // Update a user's name if it has changed in the database
                             try {
-                                Document filter = new Document("uuid", existingUser.getUuid().toString());
+                                Document filter = new Document("uuid", existingUser.getUuid());
                                 Document doc = mongoCollectionHelper.getCollection(usersTable).find(filter).first();
                                 if (doc == null) {
                                     throw new MongoException("User document returned null!");
                                 }
 
-                                Bson updates = Updates.set("username", user.getUsername());
+                                Bson updates = Updates.set("username", user.getName());
                                 mongoCollectionHelper.updateDocument(usersTable, doc, updates);
                             } catch (MongoException e) {
                                 plugin.log(Level.SEVERE, "Failed to insert a user into the database", e);
@@ -123,7 +126,7 @@ public class MongoDbDatabase extends Database {
                     () -> {
                         // Insert new player data into the database
                         try {
-                            Document doc = new Document("uuid", user.getUuid().toString()).append("username", user.getUsername());
+                            Document doc = new Document("uuid", user.getUuid()).append("username", user.getName());
                             mongoCollectionHelper.insertDocument(usersTable, doc);
                         } catch (MongoException e) {
                             plugin.log(Level.SEVERE, "Failed to insert a user into the database", e);
@@ -135,12 +138,6 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Get a player by their Minecraft account {@link UUID}
-     *
-     * @param uuid Minecraft account {@link UUID} of the {@link User} to get
-     * @return An optional with the {@link User} present if they exist
-     */
     @Blocking
     @Override
     public Optional<User> getUser(@NotNull UUID uuid) {
@@ -148,8 +145,7 @@ public class MongoDbDatabase extends Database {
             Document filter = new Document("uuid", uuid);
             Document doc = mongoCollectionHelper.getCollection(usersTable).find(filter).first();
             if (doc != null) {
-                return Optional.of(new User(UUID.fromString(doc.getString("uuid")),
-                        doc.getString("username")));
+                return Optional.of(new User(uuid, doc.getString("username")));
             }
             return Optional.empty();
         } catch (MongoException e) {
@@ -158,12 +154,6 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Get a user by their username (<i>case-insensitive</i>)
-     *
-     * @param username Username of the {@link User} to get (<i>case-insensitive</i>)
-     * @return An optional with the {@link User} present if they exist
-     */
     @Blocking
     @Override
     public Optional<User> getUserByName(@NotNull String username) {
@@ -171,7 +161,7 @@ public class MongoDbDatabase extends Database {
             Document filter = new Document("username", username);
             Document doc = mongoCollectionHelper.getCollection(usersTable).find(filter).first();
             if (doc != null) {
-                return Optional.of(new User(UUID.fromString(doc.getString("uuid")),
+                return Optional.of(new User(doc.get("uuid", UUID.class),
                         doc.getString("username")));
             }
             return Optional.empty();
@@ -181,22 +171,34 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Get the latest data snapshot for a user.
-     *
-     * @param user The user to get data for
-     * @return an optional containing the {@link DataSnapshot}, if it exists, or an empty optional if it does not
-     */
+    @Override
+    @NotNull
+    public List<User> getAllUsers() {
+        final List<User> users = Lists.newArrayList();
+        try {
+            final FindIterable<Document> doc = mongoCollectionHelper.getCollection(usersTable).find();
+            for (Document document : doc) {
+                users.add(new User(
+                        UUID.fromString(document.getString("uuid")),
+                        document.getString("username")
+                ));
+            }
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to get all users from the database", e);
+        }
+        return users;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getLatestSnapshot(@NotNull User user) {
         try {
-            Document filter = new Document("player_uuid", user.getUuid().toString());
+            Document filter = new Document("player_uuid", user.getUuid());
             Document sort = new Document("timestamp", -1); // -1 = Descending
             FindIterable<Document> iterable = mongoCollectionHelper.getCollection(userDataTable).find(filter).sort(sort);
             Document doc = iterable.first();
             if (doc != null) {
-                final UUID versionUuid = UUID.fromString(doc.getString("version_uuid"));
+                final UUID versionUuid = doc.get("version_uuid", UUID.class);
                 final OffsetDateTime timestamp = OffsetDateTime.ofInstant(Instant.ofEpochMilli((long) doc.get("timestamp")), TimeZone.getDefault().toZoneId());
                 final Binary bin = doc.get("data", Binary.class);
                 final byte[] dataByteArray = bin.getData();
@@ -209,23 +211,17 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Get all {@link DataSnapshot} entries for a user from the database.
-     *
-     * @param user The user to get data for
-     * @return The list of a user's {@link DataSnapshot} entries
-     */
     @Blocking
     @Override
     @NotNull
     public List<DataSnapshot.Packed> getAllSnapshots(@NotNull User user) {
         try {
             final List<DataSnapshot.Packed> retrievedData = Lists.newArrayList();
-            Document filter = new Document("player_uuid", user.getUuid().toString());
+            Document filter = new Document("player_uuid", user.getUuid());
             Document sort = new Document("timestamp", -1); // -1 = Descending
             FindIterable<Document> iterable = mongoCollectionHelper.getCollection(userDataTable).find(filter).sort(sort);
             for (Document doc : iterable) {
-                final UUID versionUuid = UUID.fromString(doc.getString("version_uuid"));
+                final UUID versionUuid = doc.get("version_uuid", UUID.class);
                 final OffsetDateTime timestamp = OffsetDateTime.ofInstant(Instant.ofEpochMilli((long) doc.get("timestamp")), TimeZone.getDefault().toZoneId());
                 final Binary bin = doc.get("data", Binary.class);
                 final byte[] dataByteArray = bin.getData();
@@ -238,18 +234,22 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Gets a specific {@link DataSnapshot} entry for a user from the database, by its UUID.
-     *
-     * @param user        The user to get data for
-     * @param versionUuid The UUID of the {@link DataSnapshot} entry to get
-     * @return An optional containing the {@link DataSnapshot}, if it exists
-     */
+    @Override
+    public int getUnpinnedSnapshotCount(@NotNull User user) {
+        try {
+            Document filter = new Document("player_uuid", user.getUuid()).append("pinned", false);
+            return (int) mongoCollectionHelper.getCollection(userDataTable).countDocuments(filter);
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to fetch a user's current snapshot count", e);
+        }
+        return 0;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getSnapshot(@NotNull User user, @NotNull UUID versionUuid) {
         try {
-            Document filter = new Document("player_uuid", user.getUuid().toString()).append("version_uuid", versionUuid.toString());
+            Document filter = new Document("player_uuid", user.getUuid()).append("version_uuid", versionUuid);
             Document sort = new Document("timestamp", -1); // -1 = Descending
             FindIterable<Document> iterable = mongoCollectionHelper.getCollection(userDataTable).find(filter).sort(sort);
             Document doc = iterable.first();
@@ -266,27 +266,18 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * <b>(Internal)</b> Prune user data for a given user to the maximum value as configured.
-     *
-     * @param user The user to prune data for
-     * @implNote Data snapshots marked as {@code pinned} are exempt from rotation
-     */
     @Blocking
     @Override
     protected void rotateSnapshots(@NotNull User user) {
         try {
-            final List<DataSnapshot.Packed> unpinnedUserData = getAllSnapshots(user).stream()
-                    .filter(dataSnapshot -> !dataSnapshot.isPinned()).toList();
+            final int unpinnedSnapshots = getUnpinnedSnapshotCount(user);
             final int maxSnapshots = plugin.getSettings().getSynchronization().getMaxUserDataSnapshots();
-            if (unpinnedUserData.size() > maxSnapshots) {
-
-                Document filter = new Document("player_uuid", user.getUuid().toString()).append("pinned", false);
+            if (unpinnedSnapshots > maxSnapshots) {
+                Document filter = new Document("player_uuid", user.getUuid()).append("pinned", false);
                 Document sort = new Document("timestamp", 1); // 1 = Ascending
                 FindIterable<Document> iterable = mongoCollectionHelper.getCollection(userDataTable)
-                        .find(filter)
-                        .sort(sort)
-                        .limit(unpinnedUserData.size() - maxSnapshots);
+                        .find(filter).sort(sort)
+                        .limit(unpinnedSnapshots - maxSnapshots);
 
                 for (Document doc : iterable) {
                     mongoCollectionHelper.deleteDocument(userDataTable, doc);
@@ -297,17 +288,11 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Deletes a specific {@link DataSnapshot} entry for a user from the database, by its UUID.
-     *
-     * @param user        The user to get data for
-     * @param versionUuid The UUID of the {@link DataSnapshot} entry to delete
-     */
     @Blocking
     @Override
     public boolean deleteSnapshot(@NotNull User user, @NotNull UUID versionUuid) {
         try {
-            Document filter = new Document("player_uuid", user.getUuid().toString()).append("version_uuid", versionUuid.toString());
+            Document filter = new Document("player_uuid", user.getUuid()).append("version_uuid", versionUuid);
             Document doc = mongoCollectionHelper.getCollection(userDataTable).find(filter).first();
             if (doc == null) {
                 return false;
@@ -320,19 +305,11 @@ public class MongoDbDatabase extends Database {
         return false;
     }
 
-    /**
-     * Deletes the most recent data snapshot by the given {@link User user}
-     * The snapshot must have been created after {@link OffsetDateTime time} and NOT be pinned
-     * Facilities the backup frequency feature, reducing redundant snapshots from being saved longer than needed
-     *
-     * @param user   The user to delete a snapshot for
-     * @param within The time to delete a snapshot after
-     */
     @Blocking
     @Override
     protected void rotateLatestSnapshot(@NotNull User user, @NotNull OffsetDateTime within) {
         try {
-            Document filter = new Document("player_uuid", user.getUuid().toString()).append("pinned", false);
+            Document filter = new Document("player_uuid", user.getUuid()).append("pinned", false);
             Document sort = new Document("timestamp", 1); // 1 = Ascending
             FindIterable<Document> iterable = mongoCollectionHelper.getCollection(userDataTable)
                     .find(filter)
@@ -352,18 +329,12 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * <b>Internal</b> - Create user data in the database
-     *
-     * @param user The user to add data for
-     * @param data The {@link DataSnapshot} to set.
-     */
     @Blocking
     @Override
     protected void createSnapshot(@NotNull User user, @NotNull DataSnapshot.Packed data) {
         try {
-            Document doc = new Document("player_uuid", user.getUuid().toString())
-                    .append("version_uuid", data.getId().toString())
+            Document doc = new Document("player_uuid", user.getUuid())
+                    .append("version_uuid", data.getId())
                     .append("timestamp", data.getTimestamp().toInstant().toEpochMilli())
                     .append("save_cause", data.getSaveCause().name())
                     .append("pinned", data.isPinned())
@@ -374,17 +345,11 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Update a saved {@link DataSnapshot} by given version UUID
-     *
-     * @param user     The user whose data snapshot
-     * @param data The {@link DataSnapshot} to update
-     */
     @Blocking
     @Override
     public void updateSnapshot(@NotNull User user, @NotNull DataSnapshot.Packed data) {
         try {
-            Document doc = new Document("player_uuid", user.getUuid().toString()).append("version_uuid", data.getId().toString());
+            Document doc = new Document("player_uuid", user.getUuid()).append("version_uuid", data.getId());
             Bson updates = Updates.combine(
                     Updates.set("save_cause", data.getSaveCause().name()),
                     Updates.set("pinned", data.isPinned()),
@@ -396,10 +361,85 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Wipes <b>all</b> {@link User} entries from the database.
-     * <b>This should only be used when preparing tables for a data migration.</b>
-     */
+    @Blocking
+    @Override
+    public void saveMapData(@NotNull String serverName, int mapId, byte @NotNull [] data) {
+        try {
+            Document doc = new Document("server_name", serverName)
+                    .append("map_id", mapId)
+                    .append("data", new Binary(data));
+            mongoCollectionHelper.insertDocument(mapDataTable, doc);
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to write map data to the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public byte @Nullable [] getMapData(@NotNull String serverName, int mapId) {
+        try {
+            Document filter = new Document("server_name", serverName).append("map_id", mapId);
+            FindIterable<Document> iterable = mongoCollectionHelper.getCollection(mapDataTable).find(filter);
+            Document doc = iterable.first();
+            if (doc != null) {
+                final Binary bin = doc.get("data", Binary.class);
+                return bin.getData();
+            }
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to get map data from the database", e);
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public @Nullable Map.Entry<String, Integer> getMapBinding(@NotNull String serverName, int mapId) {
+        final Document filter = new Document("to_server_name", serverName).append("to_id", mapId);
+        final FindIterable<Document> iterable = mongoCollectionHelper.getCollection(mapIdsTable).find(filter);
+        final Document doc = iterable.first();
+        if (doc != null) {
+            return new AbstractMap.SimpleImmutableEntry<>(
+                    doc.getString("from_server_name"),
+                    doc.getInteger("from_id")
+            );
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public void setMapBinding(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName, int toMapId) {
+        try {
+            final Document doc = new Document("from_server_name", fromServerName)
+                    .append("from_id", fromMapId)
+                    .append("to_server_name", toServerName)
+                    .append("to_id", toMapId);
+            mongoCollectionHelper.insertDocument(mapIdsTable, doc);
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to connect map IDs in the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public int getBoundMapId(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName) {
+        try {
+            final Document filter = new Document("from_server_name", fromServerName)
+                    .append("from_id", fromMapId)
+                    .append("to_server_name", toServerName);
+            final FindIterable<Document> iterable = mongoCollectionHelper.getCollection(mapIdsTable).find(filter);
+
+            final Document doc = iterable.first();
+            if (doc != null) {
+                return doc.getInteger("to_id");
+            }
+            return -1;
+        } catch (MongoException e) {
+            plugin.log(Level.SEVERE, "Failed to get new map id from the database", e);
+            return -1;
+        }
+    }
+
     @Blocking
     @Override
     public void wipeDatabase() {
@@ -410,9 +450,6 @@ public class MongoDbDatabase extends Database {
         }
     }
 
-    /**
-     * Close the database connection
-     */
     @Override
     public void terminate() {
         if (mongoConnectionHandler != null) {

common/src/main/java/net/william278/husksync/database/MySqlDatabase.java

@@ -27,6 +27,7 @@ import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.User;
 import org.jetbrains.annotations.Blocking;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
@@ -115,6 +116,9 @@ public class MySqlDatabase extends Database {
         );
         dataSource.setDataSourceProperties(properties);
 
+        // Check config for if tables should be created
+        if (!plugin.getSettings().getDatabase().isCreateTables()) return;
+
         // Prepare database schema; make tables if they don't exist
         try (Connection connection = dataSource.getConnection()) {
             final String[] databaseSchema = getSchemaStatements(String.format("database/%s_schema.sql", flavor));
@@ -137,7 +141,7 @@ public class MySqlDatabase extends Database {
     public void ensureUser(@NotNull User user) {
         getUser(user.getUuid()).ifPresentOrElse(
                 existingUser -> {
-                    if (!existingUser.getUsername().equals(user.getUsername())) {
+                    if (!existingUser.getName().equals(user.getName())) {
                         // Update a user's name if it has changed in the database
                         try (Connection connection = getConnection()) {
                             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
@@ -145,11 +149,12 @@ public class MySqlDatabase extends Database {
                                     SET `username`=?
                                     WHERE `uuid`=?"""))) {
 
-                                statement.setString(1, user.getUsername());
+                                statement.setString(1, user.getName());
                                 statement.setString(2, existingUser.getUuid().toString());
                                 statement.executeUpdate();
                             }
-                            plugin.log(Level.INFO, "Updated " + user.getUsername() + "'s name in the database (" + existingUser.getUsername() + " -> " + user.getUsername() + ")");
+                            plugin.log(Level.INFO, "Updated " + user.getName() + "'s name in the database ("
+                                    + existingUser.getName() + " -> " + user.getName() + ")");
                         } catch (SQLException e) {
                             plugin.log(Level.SEVERE, "Failed to update a user's name on the database", e);
                         }
@@ -163,7 +168,7 @@ public class MySqlDatabase extends Database {
                                 VALUES (?,?);"""))) {
 
                             statement.setString(1, user.getUuid().toString());
-                            statement.setString(2, user.getUsername());
+                            statement.setString(2, user.getName());
                             statement.executeUpdate();
                         }
                     } catch (SQLException e) {
@@ -218,6 +223,27 @@ public class MySqlDatabase extends Database {
         return Optional.empty();
     }
 
+    @Override
+    @NotNull
+    public List<User> getAllUsers() {
+        final List<User> users = Lists.newArrayList();
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT `uuid`, `username`
+                    FROM `%users_table%`;
+                    """))) {
+                final ResultSet resultSet = statement.executeQuery();
+                while (resultSet.next()) {
+                    users.add(new User(UUID.fromString(resultSet.getString("uuid")),
+                            resultSet.getString("username")));
+                }
+            }
+        } catch (SQLException e) {
+            plugin.log(Level.SEVERE, "Failed to fetch a user by name from the database", e);
+        }
+        return users;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getLatestSnapshot(@NotNull User user) {
@@ -273,11 +299,30 @@ public class MySqlDatabase extends Database {
                 return retrievedData;
             }
         } catch (SQLException | DataAdapter.AdaptionException e) {
-            plugin.log(Level.SEVERE, "Failed to fetch a user's current user data from the database", e);
+            plugin.log(Level.SEVERE, "Failed to fetch a user's list of snapshots from the database", e);
         }
         return retrievedData;
     }
 
+    @Override
+    public int getUnpinnedSnapshotCount(@NotNull User user) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+            SELECT COUNT(`version_uuid`)
+            FROM `%user_data_table%`
+            WHERE `player_uuid`=? AND `pinned`=false;"""))) {
+                statement.setString(1, user.getUuid().toString());
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return resultSet.getInt(1);
+                }
+            }
+        } catch (SQLException e) {
+            plugin.log(Level.SEVERE, "Failed to fetch a user's current snapshot count", e);
+        }
+        return 0;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getSnapshot(@NotNull User user, @NotNull UUID versionUuid) {
@@ -310,10 +355,9 @@ public class MySqlDatabase extends Database {
     @Blocking
     @Override
     protected void rotateSnapshots(@NotNull User user) {
-        final List<DataSnapshot.Packed> unpinnedUserData = getAllSnapshots(user).stream()
-                .filter(dataSnapshot -> !dataSnapshot.isPinned()).toList();
+        final int unpinnedSnapshots = getUnpinnedSnapshotCount(user);
         final int maxSnapshots = plugin.getSettings().getSynchronization().getMaxUserDataSnapshots();
-        if (unpinnedUserData.size() > maxSnapshots) {
+        if (unpinnedSnapshots > maxSnapshots) {
             try (Connection connection = getConnection()) {
                 try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
                         DELETE FROM `%user_data_table%`
@@ -321,7 +365,7 @@ public class MySqlDatabase extends Database {
                         AND `pinned` IS FALSE
                         ORDER BY `timestamp` ASC
                         LIMIT %entry_count%;""".replace("%entry_count%",
-                        Integer.toString(unpinnedUserData.size() - maxSnapshots))))) {
+                        Integer.toString(unpinnedSnapshots - maxSnapshots))))) {
                     statement.setString(1, user.getUuid().toString());
                     statement.executeUpdate();
                 }
@@ -409,6 +453,120 @@ public class MySqlDatabase extends Database {
         }
     }
 
+    @Blocking
+    @Override
+    public void saveMapData(@NotNull String serverName, int mapId, byte @NotNull [] data) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    INSERT INTO `%map_data_table%`
+                    (`server_name`,`map_id`,`data`)
+                    VALUES (?,?,?);"""))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+                statement.setBlob(3, new ByteArrayInputStream(data));
+                statement.executeUpdate();
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to write map data to the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public byte @Nullable [] getMapData(@NotNull String serverName, int mapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT `data`
+                    FROM `%map_data_table%`
+                    WHERE `server_name`=? AND `map_id`=?
+                    LIMIT 1;"""))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    final Blob blob = resultSet.getBlob("data");
+                    final byte[] dataByteArray = blob.getBytes(1, (int) blob.length());
+                    blob.free();
+                    return dataByteArray;
+                }
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get map data from the database", e);
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public @Nullable Map.Entry<String, Integer> getMapBinding(@NotNull String serverName, int mapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT `from_server_name`, `from_id`
+                    FROM `%map_ids_table%`
+                    WHERE `to_server_name`=? AND `to_id`=?
+                    LIMIT 1;
+                    """))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return new AbstractMap.SimpleImmutableEntry<>(
+                            resultSet.getString("from_server_name"),
+                            resultSet.getInt("from_id")
+                    );
+                }
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get map data from the database", e);
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public void setMapBinding(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName, int toMapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    INSERT INTO `%map_ids_table%`
+                    (`from_server_name`,`from_id`,`to_server_name`,`to_id`)
+                    VALUES (?,?,?,?);"""))) {
+                statement.setString(1, fromServerName);
+                statement.setInt(2, fromMapId);
+                statement.setString(3, toServerName);
+                statement.setInt(4, toMapId);
+                statement.executeUpdate();
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to connect map IDs in the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public int getBoundMapId(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT `to_id`
+                    FROM `%map_ids_table%`
+                    WHERE `from_server_name`=? AND `from_id`=? AND `to_server_name`=?
+                    LIMIT 1;"""))) {
+                statement.setString(1, fromServerName);
+                statement.setInt(2, fromMapId);
+                statement.setString(3, toServerName);
+
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return resultSet.getInt("to_id");
+                }
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get new map id from the database", e);
+        }
+        return -1;
+    }
+
     @Override
     public void wipeDatabase() {
         try (Connection connection = getConnection()) {

common/src/main/java/net/william278/husksync/database/PostgresDatabase.java

@@ -27,6 +27,7 @@ import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.User;
 import org.jetbrains.annotations.Blocking;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.io.IOException;
 import java.sql.*;
@@ -51,12 +52,6 @@ public class PostgresDatabase extends Database {
         this.driverClass = "org.postgresql.Driver";
     }
 
-    /**
-     * Fetch the auto-closeable connection from the hikariDataSource
-     *
-     * @return The {@link Connection} to the MySQL database
-     * @throws SQLException if the connection fails for some reason
-     */
     @Blocking
     @NotNull
     private Connection getConnection() throws SQLException {
@@ -114,6 +109,9 @@ public class PostgresDatabase extends Database {
         );
         dataSource.setDataSourceProperties(properties);
 
+        // Check config for if tables should be created
+        if (!plugin.getSettings().getDatabase().isCreateTables()) return;
+
         // Prepare database schema; make tables if they don't exist
         try (Connection connection = dataSource.getConnection()) {
             final String[] databaseSchema = getSchemaStatements(String.format("database/%s_schema.sql", flavor));
@@ -136,19 +134,19 @@ public class PostgresDatabase extends Database {
     public void ensureUser(@NotNull User user) {
         getUser(user.getUuid()).ifPresentOrElse(
                 existingUser -> {
-                    if (!existingUser.getUsername().equals(user.getUsername())) {
+                    if (!existingUser.getName().equals(user.getName())) {
                         // Update a user's name if it has changed in the database
                         try (Connection connection = getConnection()) {
                             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                                    UPDATE "%users_table%"
-                                    SET "username"=?
-                                    WHERE "uuid"=?"""))) {
+                                    UPDATE %users_table%
+                                    SET username=?
+                                    WHERE uuid=?;"""))) {
 
-                                statement.setString(1, user.getUsername());
+                                statement.setString(1, user.getName());
                                 statement.setObject(2, existingUser.getUuid());
                                 statement.executeUpdate();
                             }
-                            plugin.log(Level.INFO, "Updated " + user.getUsername() + "'s name in the database (" + existingUser.getUsername() + " -> " + user.getUsername() + ")");
+                            plugin.log(Level.INFO, "Updated " + user.getName() + "'s name in the database (" + existingUser.getName() + " -> " + user.getName() + ")");
                         } catch (SQLException e) {
                             plugin.log(Level.SEVERE, "Failed to update a user's name on the database", e);
                         }
@@ -158,11 +156,11 @@ public class PostgresDatabase extends Database {
                     // Insert new player data into the database
                     try (Connection connection = getConnection()) {
                         try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                                INSERT INTO "%users_table%" ("uuid","username")
+                                INSERT INTO %users_table% (uuid,username)
                                 VALUES (?,?);"""))) {
 
                             statement.setObject(1, user.getUuid());
-                            statement.setString(2, user.getUsername());
+                            statement.setString(2, user.getName());
                             statement.executeUpdate();
                         }
                     } catch (SQLException e) {
@@ -177,9 +175,9 @@ public class PostgresDatabase extends Database {
     public Optional<User> getUser(@NotNull UUID uuid) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    SELECT "uuid", "username"
-                    FROM "%users_table%"
-                    WHERE "uuid"=?"""))) {
+                    SELECT uuid, username
+                    FROM %users_table%
+                    WHERE uuid=?;"""))) {
 
                 statement.setObject(1, uuid);
 
@@ -200,9 +198,9 @@ public class PostgresDatabase extends Database {
     public Optional<User> getUserByName(@NotNull String username) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    SELECT "uuid", "username"
-                    FROM "%users_table%"
-                    WHERE "username"=?"""))) {
+                    SELECT uuid, username
+                    FROM %users_table%
+                    WHERE username=?;"""))) {
                 statement.setString(1, username);
 
                 final ResultSet resultSet = statement.executeQuery();
@@ -217,15 +215,37 @@ public class PostgresDatabase extends Database {
         return Optional.empty();
     }
 
+
+    @Override
+    @NotNull
+    public List<User> getAllUsers() {
+        final List<User> users = Lists.newArrayList();
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT uuid, username
+                    FROM %users_table%;
+                    """))) {
+                final ResultSet resultSet = statement.executeQuery();
+                while (resultSet.next()) {
+                    users.add(new User(UUID.fromString(resultSet.getString("uuid")),
+                            resultSet.getString("username")));
+                }
+            }
+        } catch (SQLException e) {
+            plugin.log(Level.SEVERE, "Failed to fetch a user by name from the database", e);
+        }
+        return users;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getLatestSnapshot(@NotNull User user) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    SELECT "version_uuid", "timestamp", "data"
-                    FROM "%user_data_table%"
-                    WHERE "player_uuid"=?
-                    ORDER BY "timestamp" DESC
+                    SELECT version_uuid, timestamp, data
+                    FROM %user_data_table%
+                    WHERE player_uuid=?
+                    ORDER BY timestamp DESC
                     LIMIT 1;"""))) {
                 statement.setObject(1, user.getUuid());
                 final ResultSet resultSet = statement.executeQuery();
@@ -251,10 +271,10 @@ public class PostgresDatabase extends Database {
         final List<DataSnapshot.Packed> retrievedData = Lists.newArrayList();
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    SELECT "version_uuid", "timestamp",  "data"
-                    FROM "%user_data_table%"
-                    WHERE "player_uuid"=?
-                    ORDER BY "timestamp" DESC;"""))) {
+                    SELECT version_uuid, timestamp,  data
+                    FROM %user_data_table%
+                    WHERE player_uuid=?
+                    ORDER BY timestamp DESC;"""))) {
                 statement.setObject(1, user.getUuid());
                 final ResultSet resultSet = statement.executeQuery();
                 while (resultSet.next()) {
@@ -268,20 +288,39 @@ public class PostgresDatabase extends Database {
                 return retrievedData;
             }
         } catch (SQLException | DataAdapter.AdaptionException e) {
-            plugin.log(Level.SEVERE, "Failed to fetch a user's current user data from the database", e);
+            plugin.log(Level.SEVERE, "Failed to fetch a user's list of snapshots from the database", e);
         }
         return retrievedData;
     }
 
+    @Override
+    public int getUnpinnedSnapshotCount(@NotNull User user) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+            SELECT COUNT(version_uuid)
+            FROM %user_data_table%
+            WHERE player_uuid=? AND pinned=false;"""))) {
+                statement.setObject(1, user.getUuid());
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return resultSet.getInt(1);
+                }
+            }
+        } catch (SQLException e) {
+            plugin.log(Level.SEVERE, "Failed to fetch a user's current snapshot count", e);
+        }
+        return 0;
+    }
+
     @Blocking
     @Override
     public Optional<DataSnapshot.Packed> getSnapshot(@NotNull User user, @NotNull UUID versionUuid) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    SELECT "version_uuid", "timestamp",  "data"
-                    FROM "%user_data_table%"
-                    WHERE "player_uuid"=? AND "version_uuid"=?
-                    ORDER BY "timestamp" DESC
+                    SELECT version_uuid, timestamp,  data
+                    FROM %user_data_table%
+                    WHERE player_uuid=? AND version_uuid=?
+                    ORDER BY timestamp DESC
                     LIMIT 1;"""))) {
                 statement.setObject(1, user.getUuid());
                 statement.setObject(2, versionUuid);
@@ -303,18 +342,22 @@ public class PostgresDatabase extends Database {
     @Blocking
     @Override
     protected void rotateSnapshots(@NotNull User user) {
-        final List<DataSnapshot.Packed> unpinnedUserData = getAllSnapshots(user).stream()
-                .filter(dataSnapshot -> !dataSnapshot.isPinned()).toList();
+        final int unpinnedSnapshots = getUnpinnedSnapshotCount(user);
         final int maxSnapshots = plugin.getSettings().getSynchronization().getMaxUserDataSnapshots();
-        if (unpinnedUserData.size() > maxSnapshots) {
+        if (unpinnedSnapshots > maxSnapshots) {
             try (Connection connection = getConnection()) {
                 try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                        DELETE FROM "%user_data_table%"
-                        WHERE "player_uuid"=?
-                        AND "pinned" = FALSE
-                        ORDER BY "timestamp" ASC
-                        LIMIT %entry_count%;""".replace("%entry_count%",
-                        Integer.toString(unpinnedUserData.size() - maxSnapshots))))) {
+                        WITH cte AS (
+                          SELECT version_uuid
+                          FROM %user_data_table%
+                          WHERE player_uuid=?
+                            AND pinned=FALSE
+                          ORDER BY timestamp ASC
+                          LIMIT %entry_count%
+                        )
+                        DELETE FROM %user_data_table%
+                        WHERE version_uuid IN (SELECT version_uuid FROM cte);""".replace("%entry_count%",
+                        Integer.toString(unpinnedSnapshots - maxSnapshots))))) {
                     statement.setObject(1, user.getUuid());
                     statement.executeUpdate();
                 }
@@ -329,11 +372,10 @@ public class PostgresDatabase extends Database {
     public boolean deleteSnapshot(@NotNull User user, @NotNull UUID versionUuid) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    DELETE FROM "%user_data_table%"
-                    WHERE "player_uuid"=? AND "version_uuid"=?
-                    LIMIT 1;"""))) {
+                    DELETE FROM %user_data_table%
+                    WHERE player_uuid=? AND version_uuid=?;"""))) {
                 statement.setObject(1, user.getUuid());
-                statement.setString(2, versionUuid.toString());
+                statement.setObject(2, versionUuid);
                 return statement.executeUpdate() > 0;
             }
         } catch (SQLException e) {
@@ -347,12 +389,12 @@ public class PostgresDatabase extends Database {
     protected void rotateLatestSnapshot(@NotNull User user, @NotNull OffsetDateTime within) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    DELETE FROM "%user_data_table%"
-                    WHERE "player_uuid"=? AND "timestamp" = (
-                       SELECT "timestamp"
-                       FROM "%user_data_table%"
-                       WHERE "player_uuid"=? AND "timestamp" > ? AND "pinned" = FALSE
-                       ORDER BY "timestamp" ASC
+                    DELETE FROM %user_data_table%
+                    WHERE player_uuid=? AND timestamp = (
+                       SELECT timestamp
+                       FROM %user_data_table%
+                       WHERE player_uuid=? AND timestamp > ? AND pinned=FALSE
+                       ORDER BY timestamp ASC
                        LIMIT 1
                     );"""))) {
                 statement.setObject(1, user.getUuid());
@@ -370,8 +412,8 @@ public class PostgresDatabase extends Database {
     protected void createSnapshot(@NotNull User user, @NotNull DataSnapshot.Packed data) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    INSERT INTO "%user_data_table%"
-                    ("player_uuid","version_uuid","timestamp","save_cause","pinned","data")
+                    INSERT INTO %user_data_table%
+                    (player_uuid,version_uuid,timestamp,save_cause,pinned,data)
                     VALUES (?,?,?,?,?,?);"""))) {
                 statement.setObject(1, user.getUuid());
                 statement.setObject(2, data.getId());
@@ -391,10 +433,10 @@ public class PostgresDatabase extends Database {
     public void updateSnapshot(@NotNull User user, @NotNull DataSnapshot.Packed data) {
         try (Connection connection = getConnection()) {
             try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
-                    UPDATE "%user_data_table%"
-                    SET "save_cause"=?,"pinned"=?,"data"=?
-                    WHERE "player_uuid"=? AND "version_uuid"=?
-                    LIMIT 1;"""))) {
+                    UPDATE %user_data_table%
+                    SET save_cause=?,pinned=?,data=?
+                    WHERE player_uuid=? AND version_uuid=?;
+                    """))) {
                 statement.setString(1, data.getSaveCause().name());
                 statement.setBoolean(2, data.isPinned());
                 statement.setBytes(3, data.asBytes(plugin));
@@ -407,11 +449,122 @@ public class PostgresDatabase extends Database {
         }
     }
 
+    @Blocking
+    @Override
+    public void saveMapData(@NotNull String serverName, int mapId, byte @NotNull [] data) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    INSERT INTO %map_data_table%
+                    (server_name,map_id,data)
+                    VALUES (?,?,?);"""))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+                statement.setBytes(3, data);
+                statement.executeUpdate();
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to write map data to the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public byte @Nullable [] getMapData(@NotNull String serverName, int mapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT data
+                    FROM %map_data_table%
+                    WHERE server_name=? AND map_id=?
+                    LIMIT 1;"""))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return resultSet.getBytes("data");
+                }
+                return null;
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get map data from the database", e);
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public @Nullable Map.Entry<String, Integer> getMapBinding(@NotNull String serverName, int mapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT from_server_name, from_id
+                    FROM %map_ids_table%
+                    WHERE to_server_name=? AND to_id=?
+                    LIMIT 1;
+                    """))) {
+                statement.setString(1, serverName);
+                statement.setInt(2, mapId);
+
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return new AbstractMap.SimpleImmutableEntry<>(
+                            resultSet.getString("from_server_name"),
+                            resultSet.getInt("from_id")
+                    );
+                }
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get map data from the database", e);
+        }
+        return null;
+    }
+
+    @Blocking
+    @Override
+    public void setMapBinding(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName, int toMapId) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    INSERT INTO %map_ids_table%
+                    (from_server_name,from_id,to_server_name,to_id)
+                    VALUES (?,?,?,?);"""))) {
+                statement.setString(1, fromServerName);
+                statement.setInt(2, fromMapId);
+                statement.setString(3, toServerName);
+                statement.setInt(4, toMapId);
+                statement.executeUpdate();
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to connect map IDs in the database", e);
+        }
+    }
+
+    @Blocking
+    @Override
+    public int getBoundMapId(@NotNull String fromServerName, int fromMapId, @NotNull String toServerName) {
+        try (Connection connection = getConnection()) {
+            try (PreparedStatement statement = connection.prepareStatement(formatStatementTables("""
+                    SELECT to_id
+                    FROM %map_ids_table%
+                    WHERE from_server_name=? AND from_id=? AND to_server_name=?
+                    LIMIT 1;"""))) {
+                statement.setString(1, fromServerName);
+                statement.setInt(2, fromMapId);
+                statement.setString(3, toServerName);
+
+                final ResultSet resultSet = statement.executeQuery();
+                if (resultSet.next()) {
+                    return resultSet.getInt("to_id");
+                }
+            }
+        } catch (SQLException | DataAdapter.AdaptionException e) {
+            plugin.log(Level.SEVERE, "Failed to get new map id from the database", e);
+        }
+        return -1;
+    }
+
     @Override
     public void wipeDatabase() {
         try (Connection connection = getConnection()) {
             try (Statement statement = connection.createStatement()) {
-                statement.executeUpdate(formatStatementTables("DELETE FROM \"%user_data_table%\";"));
+                statement.executeUpdate(formatStatementTables("DELETE FROM %user_data_table%;"));
             }
         } catch (SQLException e) {
             plugin.log(Level.SEVERE, "Failed to wipe the database", e);

common/src/main/java/net/william278/husksync/database/mongo/MongoCollectionHelper.java

@@ -29,6 +29,7 @@ public class MongoCollectionHelper {
 
     /**
      * Initialize the collection helper
+     *
      * @param database Instance of {@link MongoConnectionHandler}
      */
     public MongoCollectionHelper(@NotNull MongoConnectionHandler database) {
@@ -37,6 +38,7 @@ public class MongoCollectionHelper {
 
     /**
      * Create a collection
+     *
      * @param collectionName the collection name
      */
     public void createCollection(@NotNull String collectionName) {
@@ -45,6 +47,7 @@ public class MongoCollectionHelper {
 
     /**
      * Delete a collection
+     *
      * @param collectionName the collection name
      */
     public void deleteCollection(@NotNull String collectionName) {
@@ -53,6 +56,7 @@ public class MongoCollectionHelper {
 
     /**
      * Get a collection
+     *
      * @param collectionName the collection name
      * @return MongoCollection<Document>
      */
@@ -62,8 +66,9 @@ public class MongoCollectionHelper {
 
     /**
      * Add a document to a collection
+     *
      * @param collectionName collection to add to
-     * @param document Document to add
+     * @param document       Document to add
      */
     public void insertDocument(@NotNull String collectionName, @NotNull Document document) {
         MongoCollection<Document> collection = database.getDatabase().getCollection(collectionName);
@@ -72,9 +77,10 @@ public class MongoCollectionHelper {
 
     /**
      * Update a document
+     *
      * @param collectionName collection the document is in
-     * @param document filter of document
-     * @param updates Bson of updates
+     * @param document       filter of document
+     * @param updates        Bson of updates
      */
     public void updateDocument(@NotNull String collectionName, @NotNull Document document, @NotNull Bson updates) {
         MongoCollection<Document> collection = database.getDatabase().getCollection(collectionName);
@@ -83,8 +89,9 @@ public class MongoCollectionHelper {
 
     /**
      * Delete a document
+     *
      * @param collectionName collection the document is in
-     * @param document filter to remove
+     * @param document       filter to remove
      */
     public void deleteDocument(@NotNull String collectionName, @NotNull Document document) {
         MongoCollection<Document> collection = database.getDatabase().getCollection(collectionName);

common/src/main/java/net/william278/husksync/database/mongo/MongoConnectionHandler.java

@@ -35,9 +35,10 @@ public class MongoConnectionHandler {
 
     /**
      * Initiate a connection to a Mongo Server
+     *
      * @param uri The connection string
      */
-    public MongoConnectionHandler(@NotNull ConnectionString uri, @NotNull  String databaseName) {
+    public MongoConnectionHandler(@NotNull ConnectionString uri, @NotNull String databaseName) {
         try {
             final MongoClientSettings settings = MongoClientSettings.builder()
                     .applyConnectionString(uri)
@@ -48,7 +49,7 @@ public class MongoConnectionHandler {
             this.database = mongoClient.getDatabase(databaseName);
         } catch (Exception e) {
             throw new IllegalStateException("Failed to establish a connection to the MongoDB database. " +
-                    "Please check the supplied database credentials in the config file", e);
+                                            "Please check the supplied database credentials in the config file", e);
         }
     }
 

common/src/main/java/net/william278/husksync/event/Cancellable.java

@@ -19,7 +19,6 @@
 
 package net.william278.husksync.event;
 
-@SuppressWarnings("unused")
 public interface Cancellable extends Event {
 
     default boolean isCancelled() {

common/src/main/java/net/william278/husksync/event/PreSyncEvent.java

@@ -27,7 +27,7 @@ import org.jetbrains.annotations.NotNull;
 import java.util.function.Consumer;
 
 @SuppressWarnings("unused")
-public interface PreSyncEvent extends PlayerEvent {
+public interface PreSyncEvent extends PlayerEvent, Cancellable {
 
     @NotNull
     DataSnapshot.Packed getData();

common/src/main/java/net/william278/husksync/listener/EventListener.java

@@ -25,9 +25,7 @@ import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.OnlineUser;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 
 import static net.william278.husksync.config.Settings.SynchronizationSettings.SaveOnDeathSettings;
 
@@ -49,11 +47,12 @@ public abstract class EventListener {
      * @param user The {@link OnlineUser} to handle
      */
     protected final void handlePlayerJoin(@NotNull OnlineUser user) {
+        plugin.getDisconnectingPlayers().remove(user.getUuid());
         if (user.isNpc()) {
             return;
         }
         plugin.lockPlayer(user.getUuid());
-        plugin.getDataSyncer().setUserData(user);
+        plugin.getDataSyncer().syncApplyUserData(user);
     }
 
     /**
@@ -62,11 +61,17 @@ public abstract class EventListener {
      * @param user The {@link OnlineUser} to handle
      */
     protected final void handlePlayerQuit(@NotNull OnlineUser user) {
-        if (user.isNpc() || plugin.isDisabling() || plugin.isLocked(user.getUuid())) {
+        // Check the user is a user, the plugin isn't disabling, then mark as disconnecting
+        if (user.isNpc() || plugin.isDisabling()) {
             return;
         }
-        plugin.lockPlayer(user.getUuid());
-        plugin.getDataSyncer().saveUserData(user);
+        plugin.getDisconnectingPlayers().add(user.getUuid());
+
+        // Lock, then save their data if the user is unlocked
+        if (!plugin.isLocked(user.getUuid())) {
+            plugin.lockPlayer(user.getUuid());
+            plugin.getDataSyncer().syncSaveUserData(user);
+        }
     }
 
     /**
@@ -79,9 +84,9 @@ public abstract class EventListener {
             return;
         }
         usersInWorld.stream()
-                .filter(user -> !plugin.isLocked(user.getUuid()) && !user.isNpc())
-                .forEach(user -> plugin.getDataSyncer().saveData(
-                        user, user.createSnapshot(DataSnapshot.SaveCause.WORLD_SAVE)
+                .filter(user -> !user.isNpc() && !user.hasDisconnected() && !plugin.isLocked(user.getUuid()))
+                .forEach(user -> plugin.getDataSyncer().saveCurrentUserData(
+                        user, DataSnapshot.SaveCause.WORLD_SAVE
                 ));
     }
 
@@ -98,8 +103,9 @@ public abstract class EventListener {
             return;
         }
 
+        // We don't persist this to Redis for syncing, as this snapshot is from a state they won't be in post-respawn
         final DataSnapshot.Packed snapshot = user.createSnapshot(DataSnapshot.SaveCause.DEATH);
-        snapshot.edit(plugin, (data -> data.getInventory().ifPresent(inventory -> inventory.setContents(items))));
+        snapshot.edit(plugin, (data -> data.getInventory().ifPresent(inv -> inv.setContents(items))));
         plugin.getDataSyncer().saveData(user, snapshot);
     }
 
@@ -108,16 +114,12 @@ public abstract class EventListener {
      * Handle the plugin disabling
      */
     public void handlePluginDisable() {
-        // Save for all online players
+        // Save for all online players.
         plugin.getOnlineUsers().stream()
                 .filter(user -> !plugin.isLocked(user.getUuid()) && !user.isNpc())
                 .forEach(user -> {
                     plugin.lockPlayer(user.getUuid());
-                    plugin.getDataSyncer().saveData(
-                            user,
-                            user.createSnapshot(DataSnapshot.SaveCause.SERVER_SHUTDOWN),
-                            (saved, data) -> plugin.getRedisManager().clearUserData(saved)
-                    );
+                    plugin.getDataSyncer().saveCurrentUserData(user, DataSnapshot.SaveCause.SERVER_SHUTDOWN);
                 });
 
         // Close outstanding connections

common/src/main/java/net/william278/husksync/maps/AdaptableMapData.java

@@ -0,0 +1,45 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.maps;
+
+import com.google.gson.annotations.SerializedName;
+import lombok.AllArgsConstructor;
+import org.jetbrains.annotations.NotNull;
+import net.william278.husksync.adapter.Adaptable;
+import net.william278.mapdataapi.MapData;
+
+import java.io.IOException;
+
+@AllArgsConstructor
+public class AdaptableMapData implements Adaptable {
+
+    @SerializedName("data")
+    private final byte[] data;
+
+    public AdaptableMapData(@NotNull MapData data) {
+        this(data.toBytes());
+    }
+
+    @NotNull
+    public MapData getData(int dataVersion) throws IOException {
+        return MapData.fromByteArray(dataVersion, data);
+    }
+
+}

common/src/main/java/net/william278/husksync/redis/RedisKeyType.java

@@ -27,7 +27,10 @@ public enum RedisKeyType {
 
     LATEST_SNAPSHOT,
     SERVER_SWITCH,
-    DATA_CHECKOUT;
+    DATA_CHECKOUT,
+    MAP_ID,
+    MAP_ID_REVERSED,
+    MAP_DATA;
 
     public static final int TTL_1_YEAR = 60 * 60 * 24 * 7 * 52; // 1 year
     public static final int TTL_10_SECONDS = 10; // 10 seconds

common/src/main/java/net/william278/husksync/redis/RedisManager.java

@@ -25,6 +25,7 @@ import net.william278.husksync.data.DataSnapshot;
 import net.william278.husksync.user.User;
 import org.jetbrains.annotations.Blocking;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 import redis.clients.jedis.*;
 import redis.clients.jedis.exceptions.JedisException;
 import redis.clients.jedis.util.Pool;
@@ -61,41 +62,62 @@ public class RedisManager extends JedisPubSub {
     /**
      * Initialize Redis connection pool
      */
+
     @Blocking
     public void initialize() throws IllegalStateException {
         final Settings.RedisSettings.RedisCredentials credentials = plugin.getSettings().getRedis().getCredentials();
+
+        final String user = credentials.getUser();
         final String password = credentials.getPassword();
         final String host = credentials.getHost();
         final int port = credentials.getPort();
+        final int database = credentials.getDatabase();
         final boolean useSSL = credentials.isUseSsl();
 
-        // Create the jedis pool
+        // Configure JedisPoolConfig
         final JedisPoolConfig config = new JedisPoolConfig();
-        config.setMaxIdle(0);
-        config.setTestOnBorrow(true);
-        config.setTestOnReturn(true);
+        config.setMaxTotal(credentials.getMaxTotalConnections());
+        config.setMaxIdle(credentials.getMaxIdleConnections());
+        config.setMinIdle(credentials.getMinIdleConnections());
+        config.setTestOnBorrow(credentials.isTestOnBorrow());
+        config.setTestOnReturn(credentials.isTestOnReturn());
+        config.setTestWhileIdle(credentials.isTestWhileIdle());
+        config.setMinEvictableIdleTimeMillis(credentials.getMinEvictableIdleTimeMillis());
+        config.setTimeBetweenEvictionRunsMillis(credentials.getTimeBetweenEvictionRunsMillis());
 
         final Settings.RedisSettings.RedisSentinel sentinel = plugin.getSettings().getRedis().getSentinel();
         Set<String> redisSentinelNodes = new HashSet<>(sentinel.getNodes());
+
         if (redisSentinelNodes.isEmpty()) {
-            this.jedisPool = password.isEmpty()
-                    ? new JedisPool(config, host, port, 0, useSSL)
-                    : new JedisPool(config, host, port, 0, password, useSSL);
+            // Standalone Redis setup
+            DefaultJedisClientConfig.Builder clientConfigBuilder = DefaultJedisClientConfig.builder()
+                    .ssl(useSSL)
+                    .database(database)
+                    .timeoutMillis(credentials.getConnectionTimeout()) // connection and socket timeout combined
+                    .user(user.isEmpty() ? null : user)
+                    .password(password.isEmpty() ? null : password);
+
+            this.jedisPool = new JedisPool(config, new HostAndPort(host, port), clientConfigBuilder.build());
         } else {
             final String sentinelPassword = sentinel.getPassword();
-            this.jedisPool = new JedisSentinelPool(sentinel.getMaster(), redisSentinelNodes, password.isEmpty()
-                    ? null : password, sentinelPassword.isEmpty() ? null : sentinelPassword);
+            this.jedisPool = new JedisSentinelPool(
+                    sentinel.getMaster(),
+                    redisSentinelNodes,
+                    config,
+                    credentials.getConnectionTimeout(),
+                    credentials.getSocketTimeout(),
+                    password.isEmpty() ? null : password,
+                    sentinelPassword.isEmpty() ? null : sentinelPassword,
+                    database);
         }
 
-        // Ping the server to check the connection
-        try {
-            jedisPool.getResource().ping();
+        try (var jedis = jedisPool.getResource()) {
+            jedis.ping();
         } catch (JedisException e) {
-            throw new IllegalStateException("Failed to establish connection with Redis. "
-                    + "Please check the supplied credentials in the config file", e);
+            throw new IllegalStateException("Failed to establish connection with Redis. " +
+                    "Please check the supplied credentials in the config file", e);
         }
 
-        // Subscribe using a thread (rather than a task)
         enabled = true;
         new Thread(this::subscribe, "husksync:redis_subscriber").start();
     }
@@ -112,8 +134,7 @@ public class RedisManager extends JedisPubSub {
                         this,
                         Arrays.stream(RedisMessage.Type.values())
                                 .map(type -> type.getMessageChannel(clusterId))
-                                .toArray(String[]::new)
-                );
+                                .toArray(String[]::new));
             } catch (Throwable t) {
                 // Thread was unlocked due error
                 onThreadUnlock(t);
@@ -157,27 +178,47 @@ public class RedisManager extends JedisPubSub {
 
         final RedisMessage redisMessage = RedisMessage.fromJson(plugin, message);
         switch (messageType) {
-            case UPDATE_USER_DATA -> plugin.getOnlineUser(redisMessage.getTargetUuid()).ifPresent(
+            case UPDATE_USER_DATA -> redisMessage.getTargetUser(plugin).ifPresent(
                     user -> {
+                        plugin.lockPlayer(user.getUuid());
                         try {
-                            final DataSnapshot.Packed data = DataSnapshot.deserialize(plugin, redisMessage.getPayload());
+                            final DataSnapshot.Packed data = DataSnapshot.deserialize(plugin,
+                                    redisMessage.getPayload());
                             user.applySnapshot(data, DataSnapshot.UpdateCause.UPDATED);
                         } catch (Throwable e) {
                             plugin.log(Level.SEVERE, "An exception occurred updating user data from Redis", e);
                             user.completeSync(false, DataSnapshot.UpdateCause.UPDATED, plugin);
                         }
-                    }
-            );
-            case REQUEST_USER_DATA -> plugin.getOnlineUser(redisMessage.getTargetUuid()).ifPresent(
+                    });
+            case REQUEST_USER_DATA -> redisMessage.getTargetUser(plugin).ifPresent(
                     user -> RedisMessage.create(
                             UUID.fromString(new String(redisMessage.getPayload(), StandardCharsets.UTF_8)),
-                            user.createSnapshot(DataSnapshot.SaveCause.INVENTORY_COMMAND).asBytes(plugin)
-                    ).dispatch(plugin, RedisMessage.Type.RETURN_USER_DATA)
-            );
+                            user.createSnapshot(DataSnapshot.SaveCause.INVENTORY_COMMAND).asBytes(plugin))
+                            .dispatch(plugin, RedisMessage.Type.RETURN_USER_DATA));
+            case CHECK_IN_PETITION -> {
+                if (!redisMessage.isTargetServer(plugin)
+                        || !plugin.getSettings().getSynchronization().isCheckinPetitions()) {
+                    return;
+                }
+                final String payload = new String(redisMessage.getPayload(), StandardCharsets.UTF_8);
+                final User user = new User(UUID.fromString(payload.split("/")[0]), payload.split("/")[1]);
+
+                // Only release checkout if user is truly offline AND not being processed
+                final boolean isOnline = plugin.getOnlineUser(user.getUuid()).isPresent();
+                final boolean isLocked = plugin.isLocked(user.getUuid());
+
+                if (isOnline || isLocked) {
+                    plugin.debug("[%s] Petition ignored - user still being processed (online=%s, locked=%s)"
+                            .formatted(user.getName(), isOnline, isLocked));
+                    return;
+                }
+
+                plugin.getRedisManager().setUserCheckedOut(user, false);
+                plugin.debug("[%s] Petition accepted - user checked in".formatted(user.getName()));
+            }
             case RETURN_USER_DATA -> {
-                final CompletableFuture<Optional<DataSnapshot.Packed>> future = pendingRequests.get(
-                        redisMessage.getTargetUuid()
-                );
+                final UUID target = redisMessage.getTargetUuid().orElse(null);
+                final CompletableFuture<Optional<DataSnapshot.Packed>> future = pendingRequests.get(target);
                 if (future != null) {
                     try {
                         final DataSnapshot.Packed data = DataSnapshot.deserialize(plugin, redisMessage.getPayload());
@@ -186,7 +227,7 @@ public class RedisManager extends JedisPubSub {
                         plugin.log(Level.SEVERE, "An exception occurred returning user data from Redis", e);
                         future.complete(Optional.empty());
                     }
-                    pendingRequests.remove(redisMessage.getTargetUuid());
+                    pendingRequests.remove(target);
                 }
             }
         }
@@ -209,58 +250,58 @@ public class RedisManager extends JedisPubSub {
         }
     }
 
+    @Blocking
     public void sendUserDataUpdate(@NotNull User user, @NotNull DataSnapshot.Packed data) {
-        plugin.runAsync(() -> {
-            final RedisMessage redisMessage = RedisMessage.create(user.getUuid(), data.asBytes(plugin));
-            redisMessage.dispatch(plugin, RedisMessage.Type.UPDATE_USER_DATA);
-        });
+        final RedisMessage redisMessage = RedisMessage.create(user.getUuid(), data.asBytes(plugin));
+        redisMessage.dispatch(plugin, RedisMessage.Type.UPDATE_USER_DATA);
     }
 
-    public CompletableFuture<Optional<DataSnapshot.Packed>> getUserData(@NotNull UUID requestId, @NotNull User user) {
+    @Blocking
+    public void petitionServerCheckin(@NotNull String server, @NotNull User user) {
+        final RedisMessage redisMessage = RedisMessage.create(
+                server, "%s/%s".formatted(user.getUuid(), user.getName()).getBytes(StandardCharsets.UTF_8));
+        redisMessage.dispatch(plugin, RedisMessage.Type.CHECK_IN_PETITION);
+    }
+
+    public CompletableFuture<Optional<DataSnapshot.Packed>> getOnlineUserData(@NotNull UUID requestId,
+            @NotNull User user,
+            @NotNull DataSnapshot.SaveCause saveCause) {
         return plugin.getOnlineUser(user.getUuid())
                 .map(online -> CompletableFuture.completedFuture(
-                        Optional.of(online.createSnapshot(DataSnapshot.SaveCause.API)))
-                )
-                .orElse(this.requestData(requestId, user));
+                        Optional.of(online.createSnapshot(saveCause))))
+                .orElse(this.getNetworkedUserData(requestId, user));
     }
 
-    private CompletableFuture<Optional<DataSnapshot.Packed>> requestData(@NotNull UUID requestId, @NotNull User user) {
+    // Request a user's dat x-server
+    private CompletableFuture<Optional<DataSnapshot.Packed>> getNetworkedUserData(@NotNull UUID requestId,
+            @NotNull User user) {
         final CompletableFuture<Optional<DataSnapshot.Packed>> future = new CompletableFuture<>();
         pendingRequests.put(requestId, future);
         plugin.runAsync(() -> {
             final RedisMessage redisMessage = RedisMessage.create(
                     user.getUuid(),
-                    requestId.toString().getBytes(StandardCharsets.UTF_8)
-            );
+                    requestId.toString().getBytes(StandardCharsets.UTF_8));
             redisMessage.dispatch(plugin, RedisMessage.Type.REQUEST_USER_DATA);
         });
         return future
                 .orTimeout(
                         plugin.getSettings().getSynchronization().getNetworkLatencyMilliseconds(),
-                        TimeUnit.MILLISECONDS
-                )
+                        TimeUnit.MILLISECONDS)
                 .exceptionally(throwable -> {
                     pendingRequests.remove(requestId);
                     return Optional.empty();
                 });
     }
 
-    /**
-     * Set a user's data to Redis
-     *
-     * @param user       the user to set data for
-     * @param data       the user's data to set
-     * @param timeToLive The time to cache the data for
-     */
+    // Set a user's data to Redis
     @Blocking
-    public void setUserData(@NotNull User user, @NotNull DataSnapshot.Packed data, int timeToLive) {
+    public void setUserData(@NotNull User user, @NotNull DataSnapshot.Packed data) {
         try (Jedis jedis = jedisPool.getResource()) {
             jedis.setex(
                     getKey(RedisKeyType.LATEST_SNAPSHOT, user.getUuid(), clusterId),
-                    timeToLive,
-                    data.asBytes(plugin)
-            );
-            plugin.debug(String.format("[%s] Set %s key on Redis", user.getUsername(), RedisKeyType.LATEST_SNAPSHOT));
+                    RedisKeyType.TTL_1_YEAR,
+                    data.asBytes(plugin));
+            plugin.debug(String.format("[%s] Set %s key on Redis", user.getName(), RedisKeyType.LATEST_SNAPSHOT));
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "An exception occurred setting user data on Redis", e);
         }
@@ -270,9 +311,8 @@ public class RedisManager extends JedisPubSub {
     public void clearUserData(@NotNull User user) {
         try (Jedis jedis = jedisPool.getResource()) {
             jedis.del(
-                    getKey(RedisKeyType.LATEST_SNAPSHOT, user.getUuid(), clusterId)
-            );
-            plugin.debug(String.format("[%s] Cleared %s on Redis", user.getUsername(), RedisKeyType.LATEST_SNAPSHOT));
+                    getKey(RedisKeyType.LATEST_SNAPSHOT, user.getUuid(), clusterId));
+            plugin.debug(String.format("[%s] Cleared %s on Redis", user.getName(), RedisKeyType.LATEST_SNAPSHOT));
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "An exception occurred clearing user data on Redis", e);
         }
@@ -281,16 +321,20 @@ public class RedisManager extends JedisPubSub {
     @Blocking
     public void setUserCheckedOut(@NotNull User user, boolean checkedOut) {
         try (Jedis jedis = jedisPool.getResource()) {
+            final String key = getKeyString(RedisKeyType.DATA_CHECKOUT, user.getUuid(), clusterId);
             if (checkedOut) {
                 jedis.set(
-                        getKey(RedisKeyType.DATA_CHECKOUT, user.getUuid(), clusterId),
-                        plugin.getServerName().getBytes(StandardCharsets.UTF_8)
-                );
+                        key.getBytes(StandardCharsets.UTF_8),
+                        plugin.getServerName().getBytes(StandardCharsets.UTF_8));
             } else {
-                jedis.del(getKey(RedisKeyType.DATA_CHECKOUT, user.getUuid(), clusterId));
+                if (jedis.del(key.getBytes(StandardCharsets.UTF_8)) == 0) {
+                    plugin.debug(String.format("[%s] %s key not set on Redis when attempting removal (%s)",
+                            user.getName(), RedisKeyType.DATA_CHECKOUT, key));
+                    return;
+                }
             }
-            plugin.debug(String.format("[%s] %s %s key to/from Redis", user.getUsername(),
-                    checkedOut ? "Set" : "Removed", RedisKeyType.DATA_CHECKOUT));
+            plugin.debug(String.format("[%s] %s %s key %s Redis (%s)", user.getName(),
+                    checkedOut ? "Set" : "Removed", RedisKeyType.DATA_CHECKOUT, checkedOut ? "to" : "from", key));
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "An exception occurred setting checkout to", e);
         }
@@ -304,13 +348,13 @@ public class RedisManager extends JedisPubSub {
             if (readData != null) {
                 final String checkoutServer = new String(readData, StandardCharsets.UTF_8);
                 plugin.debug(String.format("[%s] Waiting for %s %s key to be unset on Redis",
-                        user.getUsername(), checkoutServer, RedisKeyType.DATA_CHECKOUT));
+                        user.getName(), checkoutServer, RedisKeyType.DATA_CHECKOUT));
                 return Optional.of(checkoutServer);
             }
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "An exception occurred getting a user's checkout key from Redis", e);
         }
-        plugin.debug(String.format("[%s] %s key not set on Redis", user.getUsername(),
+        plugin.debug(String.format("[%s] %s key not set on Redis", user.getName(),
                 RedisKeyType.DATA_CHECKOUT));
         return Optional.empty();
     }
@@ -345,10 +389,9 @@ public class RedisManager extends JedisPubSub {
             jedis.setex(
                     getKey(RedisKeyType.SERVER_SWITCH, user.getUuid(), clusterId),
                     RedisKeyType.TTL_10_SECONDS,
-                    new byte[0]
-            );
+                    new byte[0]);
             plugin.debug(String.format("[%s] Set %s key to Redis",
-                    user.getUsername(), RedisKeyType.SERVER_SWITCH));
+                    user.getName(), RedisKeyType.SERVER_SWITCH));
         } catch (Throwable e) {
             plugin.log(Level.SEVERE, "An exception occurred setting a user's server switch key from Redis", e);
         }
@@ -358,7 +401,8 @@ public class RedisManager extends JedisPubSub {
      * Fetch a user's data from Redis and consume the key if found
      *
      * @param user The user to fetch data for
-     * @return The user's data, if it's present on the database. Otherwise, an empty optional.
+     * @return The user's data, if it's present on the database. Otherwise, an empty
+     *         optional.
      */
     @Blocking
     public Optional<DataSnapshot.Packed> getUserData(@NotNull User user) {
@@ -367,11 +411,11 @@ public class RedisManager extends JedisPubSub {
             final byte[] dataByteArray = jedis.get(key);
             if (dataByteArray == null) {
                 plugin.debug(String.format("[%s] Waiting for %s key from Redis",
-                        user.getUsername(), RedisKeyType.LATEST_SNAPSHOT));
+                        user.getName(), RedisKeyType.LATEST_SNAPSHOT));
                 return Optional.empty();
             }
             plugin.debug(String.format("[%s] Read %s key from Redis",
-                    user.getUsername(), RedisKeyType.LATEST_SNAPSHOT));
+                    user.getName(), RedisKeyType.LATEST_SNAPSHOT));
 
             // Consume the key (delete from redis)
             jedis.del(key);
@@ -391,11 +435,11 @@ public class RedisManager extends JedisPubSub {
             final byte[] readData = jedis.get(key);
             if (readData == null) {
                 plugin.debug(String.format("[%s] Waiting for %s key from Redis",
-                        user.getUsername(), RedisKeyType.SERVER_SWITCH));
+                        user.getName(), RedisKeyType.SERVER_SWITCH));
                 return false;
             }
             plugin.debug(String.format("[%s] Read %s key from Redis",
-                    user.getUsername(), RedisKeyType.SERVER_SWITCH));
+                    user.getName(), RedisKeyType.SERVER_SWITCH));
 
             // Consume the key (delete from redis)
             jedis.del(key);
@@ -406,6 +450,121 @@ public class RedisManager extends JedisPubSub {
         }
     }
 
+    @Blocking
+    public String getStatusDump() {
+        try (Jedis jedis = jedisPool.getResource()) {
+            return jedis.info();
+        }
+    }
+
+    @Blocking
+    public long getLatency() {
+        final long startTime = System.currentTimeMillis();
+        try (Jedis jedis = jedisPool.getResource()) {
+            jedis.ping();
+            return System.currentTimeMillis() - startTime;
+        }
+    }
+
+    @Blocking
+    public String getVersion() {
+        final String info = getStatusDump();
+        for (String line : info.split("\n")) {
+            if (line.startsWith("redis_version:")) {
+                return line.split(":")[1];
+            }
+        }
+        return "unknown";
+    }
+
+    @Blocking
+    public void bindMapIds(@NotNull String fromServer, int fromId, @NotNull String toServer, int toId) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            jedis.setex(
+                    getMapIdKey(fromServer, fromId, toServer, clusterId),
+                    RedisKeyType.TTL_1_YEAR,
+                    String.valueOf(toId).getBytes(StandardCharsets.UTF_8));
+            jedis.setex(
+                    getReversedMapIdKey(toServer, toId, clusterId),
+                    RedisKeyType.TTL_1_YEAR,
+                    String.format("%s:%s", fromServer, fromId).getBytes(StandardCharsets.UTF_8));
+            plugin.debug(String.format("Bound map %s:%s -> %s:%s on Redis", fromServer, fromId, toServer, toId));
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "An exception occurred binding map ids on Redis", e);
+        }
+    }
+
+    @Blocking
+    public Optional<Integer> getBoundMapId(@NotNull String fromServer, int fromId, @NotNull String toServer) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            final byte[] readData = jedis.get(getMapIdKey(fromServer, fromId, toServer, clusterId));
+            if (readData == null) {
+                plugin.debug(String.format("[%s:%s] No bound map id for server %s Redis",
+                        fromServer, fromId, toServer));
+                return Optional.empty();
+            }
+            plugin.debug(String.format("[%s:%s] Read bound map id for server %s from Redis",
+                    fromServer, fromId, toServer));
+
+            return Optional.of(Integer.parseInt(new String(readData, StandardCharsets.UTF_8)));
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "An exception occurred getting bound map id from Redis", e);
+            return Optional.empty();
+        }
+    }
+
+    @Blocking
+    public @Nullable Map.Entry<String, Integer> getReversedMapBound(@NotNull String toServer, int toId) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            final byte[] readData = jedis.get(getReversedMapIdKey(toServer, toId, clusterId));
+            if (readData == null) {
+                plugin.debug(String.format("[%s:%s] No reversed map bound on Redis",
+                        toServer, toId));
+                return null;
+            }
+            plugin.debug(String.format("[%s:%s] Read reversed map bound from Redis",
+                    toServer, toId));
+
+            String[] parts = new String(readData, StandardCharsets.UTF_8).split(":");
+            return Map.entry(parts[0], Integer.parseInt(parts[1]));
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "An exception occurred reading reversed map bound from Redis", e);
+            return null;
+        }
+    }
+
+    @Blocking
+    public void setMapData(@NotNull String serverName, int mapId, byte[] data) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            jedis.setex(
+                    getMapDataKey(serverName, mapId, clusterId),
+                    RedisKeyType.TTL_1_YEAR,
+                    data);
+            plugin.debug(String.format("Set map data %s:%s on Redis", serverName, mapId));
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "An exception occurred setting map data on Redis", e);
+        }
+    }
+
+    @Blocking
+    public byte @Nullable [] getMapData(@NotNull String serverName, int mapId) {
+        try (Jedis jedis = jedisPool.getResource()) {
+            final byte[] readData = jedis.get(getMapDataKey(serverName, mapId, clusterId));
+            if (readData == null) {
+                plugin.debug(String.format("[%s:%s] No map data on Redis",
+                        serverName, mapId));
+                return null;
+            }
+            plugin.debug(String.format("[%s:%s] Read map data from Redis",
+                    serverName, mapId));
+
+            return readData;
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "An exception occurred reading map data from Redis", e);
+            return null;
+        }
+    }
+
     @Blocking
     public void terminate() {
         enabled = false;
@@ -418,7 +577,28 @@ public class RedisManager extends JedisPubSub {
     }
 
     private static byte[] getKey(@NotNull RedisKeyType keyType, @NotNull UUID uuid, @NotNull String clusterId) {
-        return String.format("%s:%s", keyType.getKeyPrefix(clusterId), uuid).getBytes(StandardCharsets.UTF_8);
+        return getKeyString(keyType, uuid, clusterId).getBytes(StandardCharsets.UTF_8);
+    }
+
+    @NotNull
+    private static String getKeyString(@NotNull RedisKeyType keyType, @NotNull UUID uuid, @NotNull String clusterId) {
+        return String.format("%s:%s", keyType.getKeyPrefix(clusterId), uuid);
+    }
+
+    private static byte[] getMapIdKey(@NotNull String fromServer, int fromId, @NotNull String toServer,
+            @NotNull String clusterId) {
+        return String.format("%s:%s:%s:%s", RedisKeyType.MAP_ID.getKeyPrefix(clusterId), fromServer, fromId, toServer)
+                .getBytes(StandardCharsets.UTF_8);
+    }
+
+    private static byte[] getReversedMapIdKey(@NotNull String toServer, int toId, @NotNull String clusterId) {
+        return String.format("%s:%s:%s", RedisKeyType.MAP_ID_REVERSED.getKeyPrefix(clusterId), toServer, toId)
+                .getBytes(StandardCharsets.UTF_8);
+    }
+
+    private static byte[] getMapDataKey(@NotNull String serverName, int mapId, @NotNull String clusterId) {
+        return String.format("%s:%s:%s", RedisKeyType.MAP_DATA.getKeyPrefix(clusterId), serverName, mapId)
+                .getBytes(StandardCharsets.UTF_8);
     }
 
 }

common/src/main/java/net/william278/husksync/redis/RedisMessage.java

@@ -21,25 +21,42 @@ package net.william278.husksync.redis;
 
 import com.google.gson.JsonSyntaxException;
 import com.google.gson.annotations.SerializedName;
+import lombok.Getter;
+import lombok.Setter;
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.adapter.Adaptable;
+import net.william278.husksync.user.OnlineUser;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.Arrays;
 import java.util.Locale;
 import java.util.Optional;
 import java.util.UUID;
 
+@Setter
 public class RedisMessage implements Adaptable {
 
+    private @Nullable String targetServer;
     @SerializedName("target_uuid")
-    private UUID targetUuid;
+    private @Nullable UUID targetUuid;
+    @Getter
+    @Setter
     @SerializedName("payload")
     private byte[] payload;
 
+    private RedisMessage(byte[] payload) {
+        setPayload(payload);
+    }
+
     private RedisMessage(@NotNull UUID targetUuid, byte[] message) {
+        this(message);
         this.setTargetUuid(targetUuid);
-        this.setPayload(message);
+    }
+
+    private RedisMessage(@NotNull String targetServer, byte[] message) {
+        this(message);
+        this.setTargetServer(targetServer);
     }
 
     @SuppressWarnings("unused")
@@ -51,6 +68,11 @@ public class RedisMessage implements Adaptable {
         return new RedisMessage(targetUuid, message);
     }
 
+    @NotNull
+    public static RedisMessage create(@NotNull String targetServer, byte[] message) {
+        return new RedisMessage(targetServer, message);
+    }
+
     @NotNull
     public static RedisMessage fromJson(@NotNull HuskSync plugin, @NotNull String json) throws JsonSyntaxException {
         return plugin.getGson().fromJson(json, RedisMessage.class);
@@ -63,28 +85,23 @@ public class RedisMessage implements Adaptable {
         ));
     }
 
-    @NotNull
-    public UUID getTargetUuid() {
-        return targetUuid;
+    public Optional<UUID> getTargetUuid() {
+        return Optional.ofNullable(targetUuid);
     }
 
-    public void setTargetUuid(@NotNull UUID targetUuid) {
-        this.targetUuid = targetUuid;
+    public Optional<OnlineUser> getTargetUser(@NotNull HuskSync plugin) {
+        return getTargetUuid().flatMap(plugin::getOnlineUser);
     }
 
-    public byte[] getPayload() {
-        return payload;
-    }
-
-    public void setPayload(byte[] payload) {
-        this.payload = payload;
+    public boolean isTargetServer(@NotNull HuskSync plugin) {
+        return targetServer != null && targetServer.equals(plugin.getServerName());
     }
 
     public enum Type {
-
         UPDATE_USER_DATA,
         REQUEST_USER_DATA,
-        RETURN_USER_DATA;
+        RETURN_USER_DATA,
+        CHECK_IN_PETITION;
 
         @NotNull
         public String getMessageChannel(@NotNull String clusterId) {

common/src/main/java/net/william278/husksync/sync/DataSyncer.java

@@ -81,18 +81,28 @@ public abstract class DataSyncer {
     }
 
     /**
-     * Called when a user's data should be fetched and applied to them
+     * Called when a user's data should be fetched and applied to them as part of a synchronization process
      *
      * @param user the user to fetch data for
      */
-    public abstract void setUserData(@NotNull OnlineUser user);
+    public abstract void syncApplyUserData(@NotNull OnlineUser user);
 
     /**
-     * Called when a user's data should be serialized and saved
+     * Called when a user's data should be serialized and saved as part of a synchronization process
      *
      * @param user the user to save
      */
-    public abstract void saveUserData(@NotNull OnlineUser user);
+    public abstract void syncSaveUserData(@NotNull OnlineUser user);
+
+    /**
+     * Save a user's current data
+     *
+     * @param onlineUser the user to save data of
+     * @param cause      the save cause
+     */
+    public void saveCurrentUserData(@NotNull OnlineUser onlineUser, @NotNull DataSnapshot.SaveCause cause) {
+        this.saveData(onlineUser, onlineUser.createSnapshot(cause), getRedis()::setUserData);
+    }
 
     /**
      * Save a {@link DataSnapshot.Packed user's data snapshot} to the database,
@@ -163,7 +173,7 @@ public abstract class DataSyncer {
                     () -> user.completeSync(true, DataSnapshot.UpdateCause.NEW_USER, plugin)
             );
         } catch (Throwable e) {
-            plugin.log(Level.WARNING, "Failed to set %s's data from the database".formatted(user.getUsername()), e);
+            plugin.log(Level.WARNING, "Failed to set %s's data from the database".formatted(user.getName()), e);
             user.completeSync(false, DataSnapshot.UpdateCause.SYNCHRONIZED, plugin);
         }
     }
@@ -175,7 +185,7 @@ public abstract class DataSyncer {
         final AtomicReference<Task.Repeating> task = new AtomicReference<>();
         final AtomicBoolean processing = new AtomicBoolean(false);
         final Runnable runnable = () -> {
-            if (user.isOffline()) {
+            if (user.cannotApplySnapshot()) {
                 task.get().cancel();
                 return;
             }
@@ -188,7 +198,7 @@ public abstract class DataSyncer {
             if (plugin.isDisabling() || timesRun.getAndIncrement() > maxListenAttempts) {
                 task.get().cancel();
                 plugin.debug(String.format("[%s] Redis timed out after %s attempts; setting from database",
-                        user.getUsername(), timesRun.get()));
+                        user.getName(), timesRun.get()));
                 setUserFromDatabase(user);
                 return;
             }

common/src/main/java/net/william278/husksync/sync/DelayDataSyncer.java

@@ -21,7 +21,6 @@ package net.william278.husksync.sync;
 
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.redis.RedisKeyType;
 import net.william278.husksync.user.OnlineUser;
 import org.jetbrains.annotations.NotNull;
 
@@ -35,7 +34,7 @@ public class DelayDataSyncer extends DataSyncer {
     }
 
     @Override
-    public void setUserData(@NotNull OnlineUser user) {
+    public void syncApplyUserData(@NotNull OnlineUser user) {
         plugin.runAsyncDelayed(
                 () -> {
                     // Fetch from the database if the user isn't changing servers
@@ -58,12 +57,15 @@ public class DelayDataSyncer extends DataSyncer {
     }
 
     @Override
-    public void saveUserData(@NotNull OnlineUser onlineUser) {
+    public void syncSaveUserData(@NotNull OnlineUser onlineUser) {
         plugin.runAsync(() -> {
             getRedis().setUserServerSwitch(onlineUser);
             saveData(
                     onlineUser, onlineUser.createSnapshot(DataSnapshot.SaveCause.DISCONNECT),
-                    (user, data) -> getRedis().setUserData(user, data, RedisKeyType.TTL_10_SECONDS)
+                    (user, data) -> {
+                        getRedis().setUserData(user, data);
+                        plugin.unlockPlayer(user.getUuid());
+                    }
             );
         });
     }

common/src/main/java/net/william278/husksync/sync/LockstepDataSyncer.java

@@ -21,10 +21,11 @@ package net.william278.husksync.sync;
 
 import net.william278.husksync.HuskSync;
 import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.redis.RedisKeyType;
 import net.william278.husksync.user.OnlineUser;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Optional;
+
 public class LockstepDataSyncer extends DataSyncer {
 
     public LockstepDataSyncer(@NotNull HuskSync plugin) {
@@ -43,11 +44,23 @@ public class LockstepDataSyncer extends DataSyncer {
 
     // Consume their data when they are checked in
     @Override
-    public void setUserData(@NotNull OnlineUser user) {
+    public void syncApplyUserData(@NotNull OnlineUser user) {
         this.listenForRedisData(user, () -> {
-            if (getRedis().getUserCheckedOut(user).isPresent()) {
+            if (user.cannotApplySnapshot()) {
+                plugin.debug("Not checking data state for user who has gone offline: %s".formatted(user.getName()));
                 return false;
             }
+
+            // If they are checked out, ask the server to check them back in and return false
+            final Optional<String> server = getRedis().getUserCheckedOut(user);
+            if (server.isPresent() && !server.get().equals(plugin.getServerName())) {
+                if (plugin.getSettings().getSynchronization().isCheckinPetitions()) {
+                    getRedis().petitionServerCheckin(server.get(), user);
+                }
+                return false;
+            }
+
+            // If they are checked in - or checked out on *this* server - we can apply their latest data
             getRedis().setUserCheckedOut(user, true);
             getRedis().getUserData(user).ifPresentOrElse(
                     data -> user.applySnapshot(data, DataSnapshot.UpdateCause.SYNCHRONIZED),
@@ -58,17 +71,15 @@ public class LockstepDataSyncer extends DataSyncer {
     }
 
     @Override
-    public void saveUserData(@NotNull OnlineUser onlineUser) {
-        plugin.runAsync(() -> {
-            getRedis().setUserServerSwitch(onlineUser);
-            saveData(
-                    onlineUser, onlineUser.createSnapshot(DataSnapshot.SaveCause.DISCONNECT),
-                    (user, data) -> {
-                        getRedis().setUserData(user, data, RedisKeyType.TTL_1_YEAR);
-                        getRedis().setUserCheckedOut(user, false);
-                    }
-            );
-        });
+    public void syncSaveUserData(@NotNull OnlineUser onlineUser) {
+        plugin.runAsync(() -> saveData(
+                onlineUser, onlineUser.createSnapshot(DataSnapshot.SaveCause.DISCONNECT),
+                (user, data) -> {
+                    getRedis().setUserData(user, data);
+                    getRedis().setUserCheckedOut(user, false);
+                    plugin.unlockPlayer(user.getUuid());
+                }
+        ));
     }
 
 }

common/src/main/java/net/william278/husksync/user/ConsoleUser.java

@@ -42,4 +42,6 @@ public final class ConsoleUser implements CommandUser {
     public boolean hasPermission(@NotNull String permission) {
         return true;
     }
+
+
 }

common/src/main/java/net/william278/husksync/user/OnlineUser.java

@@ -43,11 +43,27 @@ public abstract class OnlineUser extends User implements CommandUser, UserDataHo
     }
 
     /**
-     * Indicates if the player has gone offline
+     * Indicates if the player is offline
      *
      * @return {@code true} if the player has left the server; {@code false} otherwise
+     * @deprecated use {@code hasDisconnected} instead
      */
-    public abstract boolean isOffline();
+    @Deprecated(since = "3.8")
+    public boolean isOffline() {
+        return hasDisconnected();
+    }
+
+    public abstract boolean hasDisconnected();
+
+    // Users cannot have snapshots applied if they have disconnected!
+    @Override
+    public boolean cannotApplySnapshot() {
+        if (hasDisconnected()) {
+            getPlugin().debug("[%s] Cannot apply snapshot as user is offline!".formatted(getName()));
+            return true;
+        }
+        return false;
+    }
 
     @NotNull
     @Override
@@ -89,7 +105,9 @@ public abstract class OnlineUser extends User implements CommandUser, UserDataHo
      * @param description    the description of the toast
      * @param iconMaterial   the namespace-keyed material to use as an hasIcon of the toast
      * @param backgroundType the background ("ToastType") of the toast
+     * @deprecated No longer supported
      */
+    @Deprecated(since = "3.6.7")
     public abstract void sendToast(@NotNull MineDown title, @NotNull MineDown description,
                                    @NotNull String iconMaterial, @NotNull String backgroundType);
 
@@ -115,7 +133,7 @@ public abstract class OnlineUser extends User implements CommandUser, UserDataHo
 
 
     /**
-     * Set a player's status from a {@link DataSnapshot}
+     * Apply a {@link DataSnapshot} to a player, updating their data
      *
      * @param snapshot The {@link DataSnapshot} to set the player's status from
      * @param cause    The {@link DataSnapshot.UpdateCause} of the snapshot
@@ -123,14 +141,12 @@ public abstract class OnlineUser extends User implements CommandUser, UserDataHo
      */
     public void applySnapshot(@NotNull DataSnapshot.Packed snapshot, @NotNull DataSnapshot.UpdateCause cause) {
         getPlugin().fireEvent(getPlugin().getPreSyncEvent(this, snapshot), (event) -> {
-            if (!isOffline()) {
-                getPlugin().debug(String.format("Applying snapshot (%s) to %s (cause: %s)",
-                        snapshot.getShortId(), getUsername(), cause.getDisplayName()
-                ));
-                UserDataHolder.super.applySnapshot(
-                        event.getData(), (succeeded) -> completeSync(succeeded, cause, getPlugin())
-                );
-            }
+            getPlugin().debug(String.format("Attempting to apply snapshot (%s) to %s (cause: %s)",
+                    snapshot.getShortId(), getName(), cause.getDisplayName()
+            ));
+            UserDataHolder.super.applySnapshot(
+                    event.getData(), (succeeded) -> completeSync(succeeded, cause, getPlugin())
+            );
         });
     }
 
@@ -145,12 +161,6 @@ public abstract class OnlineUser extends User implements CommandUser, UserDataHo
             switch (plugin.getSettings().getSynchronization().getNotificationDisplaySlot()) {
                 case CHAT -> cause.getCompletedLocale(plugin).ifPresent(this::sendMessage);
                 case ACTION_BAR -> cause.getCompletedLocale(plugin).ifPresent(this::sendActionBar);
-                case TOAST -> cause.getCompletedLocale(plugin)
-                        .ifPresent(locale -> this.sendToast(
-                                locale, new MineDown(""),
-                                "minecraft:bell",
-                                "TASK"
-                        ));
             }
             plugin.fireEvent(
                     plugin.getSyncCompleteEvent(this),

common/src/main/java/net/william278/husksync/user/User.java

@@ -19,6 +19,9 @@
 
 package net.william278.husksync.user;
 
+import lombok.AllArgsConstructor;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.UUID;
@@ -26,39 +29,18 @@ import java.util.UUID;
 /**
  * Represents a user who has their data synchronized by HuskSync
  */
+@Getter
+@AllArgsConstructor
+@EqualsAndHashCode(exclude = {"name"})
 public class User {
 
     private final UUID uuid;
+    private final String name;
 
-    private final String username;
-
-    public User(@NotNull UUID uuid, @NotNull String username) {
-        this.username = username;
-        this.uuid = uuid;
-    }
-
-    /**
-     * Get the user's unique account ID
-     */
-    @NotNull
-    public UUID getUuid() {
-        return uuid;
-    }
-
-    /**
-     * Get the user's username
-     */
     @NotNull
+    @Deprecated(since = "3.7.4")
     public String getUsername() {
-        return username;
-    }
-
-    @Override
-    public boolean equals(Object object) {
-        if (object instanceof User other) {
-            return this.getUuid().equals(other.getUuid());
-        }
-        return super.equals(object);
+        return name;
     }
 
 }

common/src/main/java/net/william278/husksync/util/CompatibilityChecker.java

@@ -0,0 +1,103 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.util;
+
+import de.exlll.configlib.Configuration;
+import de.exlll.configlib.YamlConfigurationProperties;
+import de.exlll.configlib.YamlConfigurationStore;
+import lombok.AllArgsConstructor;
+import net.william278.desertwell.util.Version;
+import net.william278.husksync.HuskSync;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.InputStream;
+import java.util.function.BiFunction;
+import java.util.logging.Level;
+
+import static net.william278.husksync.config.ConfigProvider.YAML_CONFIGURATION_PROPERTIES;
+
+public interface CompatibilityChecker {
+
+    String COMPATIBILITY_FILE = "compatibility.yml";
+
+    default void checkCompatibility() throws HuskSync.FailedToLoadException {
+        final YamlConfigurationProperties p = YAML_CONFIGURATION_PROPERTIES.build();
+        final CompatibilityConfig compat;
+
+        // Load compatibility file
+        try (InputStream input = getResource(COMPATIBILITY_FILE)) {
+            compat = new YamlConfigurationStore<>(CompatibilityConfig.class, p).read(input);
+        } catch (Throwable e) {
+            getPlugin().log(Level.WARNING, "Failed to load compatibility config, skipping check.", e);
+            return;
+        }
+
+        // Check compatibility
+        if (!compat.isCompatibleWith(getPlugin().getMinecraftVersion())) {
+            throw new HuskSync.FailedToLoadException("""
+                    Incompatible Minecraft version. This version of HuskSync is designed for Minecraft %s.
+                    Please download the correct version of HuskSync for your server's Minecraft version (%s)."""
+                    .formatted(compat.minecraftVersionRange(), getPlugin().getMinecraftVersion().toString()));
+        }
+    }
+
+    InputStream getResource(@NotNull String name);
+
+    @NotNull
+    HuskSync getPlugin();
+
+    @Configuration
+    record CompatibilityConfig(@NotNull String minecraftVersionRange) {
+
+        @AllArgsConstructor
+        enum ExpressionType {
+            GTE(">=", (v, s) -> v.compareTo(Version.fromString(s.substring(2))) >= 0),
+            LTE("<=", (v, s) -> v.compareTo(Version.fromString(s.substring(2))) <= 0),
+            GT(">", (v, s) -> v.compareTo(Version.fromString(s.substring(1))) > 0),
+            LT("<", (v, s) -> v.compareTo(Version.fromString(s.substring(1))) < 0),
+            NOT("!", (v, s) -> v.compareTo(Version.fromString(s.substring(1))) != 0),
+            E("=", (v, s) -> v.compareTo(Version.fromString(s.substring(1))) == 0);
+
+            private final String match;
+            private final BiFunction<Version, String, Boolean> function;
+
+            private static boolean check(@NotNull String versionRange, @NotNull Version mcVer) {
+                boolean passes = true;
+                versions:
+                for (String exp : versionRange.split(" ")) {
+                    for (ExpressionType type : values()) {
+                        if (exp.trim().startsWith(type.match)) {
+                            passes = passes && type.function.apply(mcVer, exp.trim());
+                            continue versions;
+                        }
+                    }
+                    passes = passes && mcVer.compareTo(Version.fromString(exp.trim())) == 0;
+                }
+                return passes;
+            }
+        }
+
+        public boolean isCompatibleWith(@NotNull Version version) {
+            return ExpressionType.check(minecraftVersionRange, version);
+        }
+
+    }
+
+}

common/src/main/java/net/william278/husksync/util/DataDumper.java

@@ -1,191 +0,0 @@
-/*
- * This file is part of HuskSync, licensed under the Apache License 2.0.
- *
- *  Copyright (c) William278 <will27528@gmail.com>
- *  Copyright (c) contributors
- *
- *  Licensed under the Apache License, Version 2.0 (the "License");
- *  you may not use this file except in compliance with the License.
- *  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS,
- *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- */
-
-package net.william278.husksync.util;
-
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParser;
-import net.william278.husksync.HuskSync;
-import net.william278.husksync.data.DataSnapshot;
-import net.william278.husksync.user.User;
-import org.jetbrains.annotations.NotNull;
-
-import java.io.*;
-import java.net.HttpURLConnection;
-import java.net.URL;
-import java.net.URLEncoder;
-import java.nio.charset.StandardCharsets;
-import java.time.format.DateTimeFormatter;
-import java.util.Locale;
-import java.util.StringJoiner;
-import java.util.logging.Level;
-
-/**
- * Utility class for dumping {@link DataSnapshot}s to a file or as a paste on the web
- */
-public class DataDumper {
-
-    private static final String LOGS_SITE_ENDPOINT = "https://api.mclo.gs/1/log";
-
-    private final HuskSync plugin;
-    private final DataSnapshot.Packed snapshot;
-    private final User user;
-
-    private DataDumper(@NotNull DataSnapshot.Packed snapshot, @NotNull User user, @NotNull HuskSync implementor) {
-        this.snapshot = snapshot;
-        this.user = user;
-        this.plugin = implementor;
-    }
-
-    /**
-     * Create a {@link DataDumper} of the given {@link DataSnapshot}
-     *
-     * @param dataSnapshot The {@link DataSnapshot} to dump
-     * @param user         The {@link User} whose data is being dumped
-     * @param plugin       The implementing {@link HuskSync} plugin
-     * @return A {@link DataDumper} for the given {@link DataSnapshot}
-     */
-    public static DataDumper create(@NotNull DataSnapshot.Packed dataSnapshot,
-                                    @NotNull User user, @NotNull HuskSync plugin) {
-        return new DataDumper(dataSnapshot, user, plugin);
-    }
-
-    /**
-     * Dumps the data snapshot to a string
-     *
-     * @return the data snapshot as a string
-     */
-    @Override
-    @NotNull
-    public String toString() {
-        return snapshot.asJson(plugin);
-    }
-
-    @NotNull
-    public String toWeb() {
-        try {
-            final URL url = new URL(LOGS_SITE_ENDPOINT);
-            final HttpURLConnection connection = (HttpURLConnection) url.openConnection();
-            connection.setRequestMethod("POST");
-            connection.setDoOutput(true);
-
-            // Dispatch the request
-            final byte[] messageBody = getWebContentField().getBytes(StandardCharsets.UTF_8);
-            final int messageLength = messageBody.length;
-            connection.setFixedLengthStreamingMode(messageLength);
-            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
-            connection.connect();
-            try (OutputStream messageOutputStream = connection.getOutputStream()) {
-                messageOutputStream.write(messageBody);
-            }
-
-            // Get the response
-            if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
-                // Get the body as a json
-                try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()))) {
-                    final StringBuilder response = new StringBuilder();
-                    String line;
-                    while ((line = reader.readLine()) != null) {
-                        response.append(line);
-                    }
-
-                    // Parse the response as json
-                    final JsonObject responseJson = JsonParser.parseString(response.toString()).getAsJsonObject();
-                    if (responseJson.has("url")) {
-                        return responseJson.get("url").getAsString();
-                    }
-                    return "(Failed to get URL from response)";
-                }
-            } else {
-                return "(Failed to upload to logs site, got: " + connection.getResponseCode() + ")";
-            }
-        } catch (Throwable e) {
-            plugin.log(Level.SEVERE, "Failed to upload data to logs site", e);
-        }
-        return "(Failed to upload to logs site)";
-    }
-
-    @NotNull
-    private String getWebContentField() {
-        return "content=" + URLEncoder.encode(toString(), StandardCharsets.UTF_8);
-    }
-
-    /**
-     * Dump the {@link DataSnapshot} to a file and return the file name
-     *
-     * @return the relative path of the file the data was dumped to
-     */
-    @NotNull
-    public String toFile() throws IOException {
-        final File filePath = getFilePath();
-
-        // Write the data from #getString to the file using a writer
-        try (final FileWriter writer = new FileWriter(filePath, StandardCharsets.UTF_8, false)) {
-            writer.write(toString());
-        } catch (IOException e) {
-            throw new IOException("Failed to write data to file", e);
-        }
-
-        return "~/plugins/HuskSync/dumps/" + filePath.getName();
-    }
-
-    /**
-     * Get the file path to dump the data to
-     *
-     * @return the file path
-     * @throws IOException if the prerequisite dumps parent folder could not be created
-     */
-    @NotNull
-    private File getFilePath() throws IOException {
-        return new File(getDumpsFolder(), getFileName());
-    }
-
-    /**
-     * Get the folder to dump the data to and create it if it does not exist
-     *
-     * @return the dumps folder
-     * @throws IOException if the folder could not be created
-     */
-    @NotNull
-    private File getDumpsFolder() throws IOException {
-        final File dumpsFolder = new File(plugin.getDataFolder(), "dumps");
-        if (!dumpsFolder.exists()) {
-            if (!dumpsFolder.mkdirs()) {
-                throw new IOException("Failed to create user data dumps folder");
-            }
-        }
-        return dumpsFolder;
-    }
-
-    /**
-     * Get the name of the file to dump the data snapshot to
-     *
-     * @return the file name
-     */
-    @NotNull
-    private String getFileName() {
-        return new StringJoiner("_")
-                .add(user.getUsername())
-                .add(snapshot.getTimestamp().format(DateTimeFormatter.ofPattern("yyyy-MM-dd_HH-mm-ss")))
-                .add(snapshot.getSaveCause().name().toLowerCase(Locale.ENGLISH))
-                .add(snapshot.getShortId())
-                + ".json";
-    }
-
-}

common/src/main/java/net/william278/husksync/util/DataSnapshotList.java

@@ -49,7 +49,7 @@ public class DataSnapshotList {
                         .map(snapshot -> plugin.getLocales()
                                 .getRawLocale(!snapshot.isInvalid() ? "data_list_item" : "data_list_item_invalid",
                                         getNumberIcon(snapshotNumber.getAndIncrement()),
-                                        dataOwner.getUsername(),
+                                        dataOwner.getName(),
                                         snapshot.getId().toString(),
                                         snapshot.getShortId(),
                                         snapshot.isPinned() ? "※" : "  ",
@@ -63,10 +63,10 @@ public class DataSnapshotList {
                                 .orElse("• " + snapshot.getId())).toList(),
                 plugin.getLocales().getBaseChatList(6)
                         .setHeaderFormat(plugin.getLocales()
-                                .getRawLocale("data_list_title", dataOwner.getUsername(),
+                                .getRawLocale("data_list_title", dataOwner.getName(),
                                         "%first_item_on_page_index%", "%last_item_on_page_index%", "%total_items%")
                                 .orElse(""))
-                        .setCommand("/husksync:userdata list " + dataOwner.getUsername())
+                        .setCommand("/husksync:userdata list " + dataOwner.getName())
                         .build());
     }
 

common/src/main/java/net/william278/husksync/util/DataSnapshotOverview.java

@@ -59,7 +59,7 @@ public class DataSnapshotOverview {
         // Title message, timestamp, owner and cause.
         final Locales locales = plugin.getLocales();
         locales.getLocale("data_manager_title", snapshot.getShortId(), snapshot.getId().toString(),
-                        dataOwner.getUsername(), dataOwner.getUuid().toString())
+                        dataOwner.getName(), dataOwner.getUuid().toString())
                 .ifPresent(user::sendMessage);
         locales.getLocale("data_manager_timestamp",
                         snapshot.getTimestamp().format(DateTimeFormatter
@@ -106,14 +106,14 @@ public class DataSnapshotOverview {
                 .ifPresent(user::sendMessage);
 
         if (user.hasPermission("husksync.command.inventory.edit")
-                && user.hasPermission("husksync.command.enderchest.edit")) {
-            locales.getLocale("data_manager_item_buttons", dataOwner.getUsername(), snapshot.getId().toString())
+            && user.hasPermission("husksync.command.enderchest.edit")) {
+            locales.getLocale("data_manager_item_buttons", dataOwner.getName(), snapshot.getId().toString())
                     .ifPresent(user::sendMessage);
         }
-        locales.getLocale("data_manager_management_buttons", dataOwner.getUsername(), snapshot.getId().toString())
+        locales.getLocale("data_manager_management_buttons", dataOwner.getName(), snapshot.getId().toString())
                 .ifPresent(user::sendMessage);
         if (user.hasPermission("husksync.command.userdata.dump")) {
-            locales.getLocale("data_manager_system_buttons", dataOwner.getUsername(), snapshot.getId().toString())
+            locales.getLocale("data_manager_system_buttons", dataOwner.getName(), snapshot.getId().toString())
                     .ifPresent(user::sendMessage);
         }
     }

common/src/main/java/net/william278/husksync/util/DataVersionSupplier.java

@@ -0,0 +1,82 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.util;
+
+import net.william278.desertwell.util.Version;
+import net.william278.husksync.HuskSync;
+import org.jetbrains.annotations.NotNull;
+
+public interface DataVersionSupplier {
+
+    int VERSION1_16_5 = 2586;
+    int VERSION1_17_1 = 2730;
+    int VERSION1_18_2 = 2975;
+    int VERSION1_19_2 = 3120;
+    int VERSION1_19_4 = 3337;
+    int VERSION1_20_1 = 3465;
+    int VERSION1_20_2 = 3578;
+    int VERSION1_20_4 = 3700;
+    int VERSION1_20_5 = 3837;
+    int VERSION1_21_1 = 3955;
+    int VERSION1_21_3 = 4082;
+    int VERSION1_21_4 = 4189;
+    int VERSION1_21_5 = 4323;
+    int VERSION1_21_6 = 4435;
+    int VERSION1_21_7 = 4438;
+    int VERSION1_21_8 = 4438;
+    int VERSION1_21_9 = 4554;
+    int VERSION1_21_10 = 4556;
+    int VERSION1_21_11 = 4671;
+
+    /**
+     * Returns the data version for a Minecraft version
+     *
+     * @param mcVersion the Minecraft version
+     * @return the data version int
+     */
+    default int getDataVersion(@NotNull Version mcVersion) {
+        return switch (mcVersion.toStringWithoutMetadata()) {
+            case "1.16", "1.16.1", "1.16.2", "1.16.3", "1.16.4", "1.16.5" -> VERSION1_16_5;
+            case "1.17", "1.17.1" -> VERSION1_17_1;
+            case "1.18", "1.18.1", "1.18.2" -> VERSION1_18_2;
+            case "1.19", "1.19.1", "1.19.2" -> VERSION1_19_2;
+            case "1.19.4" -> VERSION1_19_4;
+            case "1.20", "1.20.1" -> VERSION1_20_1;
+            case "1.20.2" -> VERSION1_20_2;
+            case "1.20.4" -> VERSION1_20_4;
+            case "1.20.5", "1.20.6" -> VERSION1_20_5;
+            case "1.21", "1.21.1" -> VERSION1_21_1;
+            case "1.21.2", "1.21.3" -> VERSION1_21_3;
+            case "1.21.4" -> VERSION1_21_4;
+            case "1.21.5" -> VERSION1_21_5;
+            case "1.21.6" -> VERSION1_21_6;
+            case "1.21.7" -> VERSION1_21_7;
+            case "1.21.8" -> VERSION1_21_8;
+            case "1.21.9" -> VERSION1_21_9;
+            case "1.21.10" -> VERSION1_21_10;
+            case "1.21.11" -> VERSION1_21_11;
+            default -> VERSION1_21_11; // Latest supported version
+        };
+    }
+
+    @NotNull
+    HuskSync getPlugin();
+
+}

common/src/main/java/net/william278/husksync/util/DumpProvider.java

@@ -0,0 +1,160 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.util;
+
+import net.william278.husksync.HuskSync;
+import net.william278.husksync.user.CommandUser;
+import net.william278.husksync.user.OnlineUser;
+import net.william278.toilet.DumpOptions;
+import net.william278.toilet.Toilet;
+import net.william278.toilet.dump.*;
+import org.jetbrains.annotations.Blocking;
+import org.jetbrains.annotations.NotNull;
+
+import static net.william278.toilet.DumpOptions.*;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+public interface DumpProvider {
+
+    @NotNull String BYTEBIN_URL = "https://bytebin.lucko.me";
+    @NotNull String VIEWER_URL = "https://william278.net/dump";
+
+    @NotNull
+    Toilet getToilet();
+
+    @NotNull
+    @Blocking
+    default String createDump(@NotNull CommandUser u) {
+        return getToilet().dump(getPluginStatus(), u instanceof OnlineUser o
+                        ? new DumpUser(o.getName(), o.getUuid()) : null,
+                getRedisInfo()).toString();
+    }
+
+    @NotNull
+    default DumpOptions getDumpOptions() {
+        return builder()
+                .bytebinUrl(BYTEBIN_URL)
+                .viewerUrl(VIEWER_URL)
+                .projectMeta(ProjectMeta.builder()
+                        .id("husksync")
+                        .name("HuskSync")
+                        .version(getPlugin().getPluginVersion().toString())
+                        .md5("unknown")
+                        .author("William278")
+                        .sourceCode("https://github.com/WiIIiam278/HuskSync")
+                        .website("https://william278.net/project/husksync")
+                        .support("https://discord.gg/tVYhJfyDWG")
+                        .build())
+                .fileInclusionRules(List.of(
+                        FileInclusionRule.configFile("config.yml", "Config File"),
+                        FileInclusionRule.configFile(getMessagesFile(), "Locales File")
+                ))
+                .compatibilityRules(List.of(
+                        getCompatibilityWarning("CombatLogX", "Combat loggers require additional" +
+                                "configuration for use with HuskSync. Check https://william278.net/docs/husksync/event-priorities"),
+                        getIncompatibleNotice("UltimateAutoRestart", "Restart plugins are not" +
+                                "compatible with HuskSync as they affect the way the server shuts down, preventing data" +
+                                "from saving correctly during a restart. Check https://william278.net/docs/husksync/troubleshooting")
+                ))
+                .build();
+    }
+
+    @NotNull
+    @Blocking
+    private PluginStatus getPluginStatus() {
+        return PluginStatus.builder()
+                .blocks(List.of(getSystemStatus(), getRegisteredDataTypes()))
+                .build();
+    }
+
+    @NotNull
+    @Blocking
+    private PluginStatus.MapStatusBlock getSystemStatus() {
+        return new PluginStatus.MapStatusBlock(
+                Map.ofEntries(
+                        Map.entry("Language", StatusLine.LANGUAGE.getValue(getPlugin())),
+                        Map.entry("Database Type", StatusLine.DATABASE_TYPE.getValue(getPlugin())),
+                        Map.entry("Database Local", StatusLine.IS_DATABASE_LOCAL.getValue(getPlugin())),
+                        Map.entry("Locked User Handler", StatusLine.LOCKED_USER_HANDLER.getValue(getPlugin())),
+                        Map.entry("Server Name", StatusLine.SERVER_NAME.getValue(getPlugin())),
+                        Map.entry("Redis Version", StatusLine.REDIS_VERSION.getValue(getPlugin())),
+                        Map.entry("Redis Latency", StatusLine.REDIS_LATENCY.getValue(getPlugin())),
+                        Map.entry("Redis Sentinel", StatusLine.USING_REDIS_SENTINEL.getValue(getPlugin())),
+                        Map.entry("Redis Database", StatusLine.REDIS_DATABASE.getValue(getPlugin())),
+                        Map.entry("Redis User", StatusLine.USING_REDIS_USER.getValue(getPlugin())),
+                        Map.entry("Redis Password", StatusLine.USING_REDIS_PASSWORD.getValue(getPlugin())),
+                        Map.entry("Redis SSL", StatusLine.REDIS_USING_SSL.getValue(getPlugin())),
+                        Map.entry("Redis Local", StatusLine.IS_REDIS_LOCAL.getValue(getPlugin()))
+                ),
+                "Plugin Status", "fa6-solid:wrench"
+        );
+    }
+
+    @NotNull
+    @Blocking
+    private PluginStatus.MapStatusBlock getRegisteredDataTypes() {
+        return new PluginStatus.MapStatusBlock(
+                getPlugin().getRegisteredDataTypes().stream().collect(Collectors.toMap(
+                        i -> i.getKey().asMinimalString(),
+                        i -> i.isEnabled() ? "✅ Enabled" : "❌ Disabled",
+                        (a, b) -> a)
+                ),
+                "Registered Data Types", "carbon:data-blob"
+        );
+    }
+
+    @NotNull
+    @Blocking
+    private ExtraFile getRedisInfo() {
+        return new ExtraFile(
+                "redis-status", "Redis Status", "devicon-plain:redis",
+                getPlugin().getRedisManager().getStatusDump(),
+                "markdown"
+        );
+    }
+
+    @NotNull
+    @SuppressWarnings("SameParameterValue")
+    private CompatibilityRule getCompatibilityWarning(@NotNull String plugin, @NotNull String description) {
+        return CompatibilityRule.builder()
+                .labelToApply(new PluginInfo.Label("Warning", "#fcba03", description))
+                .resourceName(plugin).build();
+    }
+
+    @NotNull
+    @SuppressWarnings("SameParameterValue")
+    private CompatibilityRule getIncompatibleNotice(@NotNull String plugin, @NotNull String description) {
+        return CompatibilityRule.builder()
+                .labelToApply(new PluginInfo.Label("Incompatible", "#ff3300", description))
+                .resourceName(plugin).build();
+    }
+
+    @NotNull
+    private String getMessagesFile() {
+        return "messages-%s.yml".formatted(getPlugin().getSettings().getLanguage());
+    }
+
+    @NotNull
+    HuskSync getPlugin();
+
+}

common/src/main/java/net/william278/husksync/util/StatusLine.java

@@ -0,0 +1,128 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.util;
+
+import net.kyori.adventure.text.Component;
+import net.kyori.adventure.text.JoinConfiguration;
+import net.kyori.adventure.text.event.HoverEvent;
+import net.kyori.adventure.text.format.NamedTextColor;
+import net.kyori.adventure.text.format.TextColor;
+import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
+import net.william278.husksync.HuskSync;
+import net.william278.husksync.database.Database;
+import org.apache.commons.text.WordUtils;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+public enum StatusLine {
+    PLUGIN_VERSION(plugin -> Component.text("v" + plugin.getPluginVersion().toStringWithoutMetadata())
+            .appendSpace().append(plugin.getPluginVersion().getMetadata().isBlank() ? Component.empty()
+                    : Component.text("(build " + plugin.getPluginVersion().getMetadata() + ")"))),
+    SERVER_VERSION(plugin -> Component.text(plugin.getServerVersion())),
+    LANGUAGE(plugin -> Component.text(plugin.getSettings().getLanguage())),
+    MINECRAFT_VERSION(plugin -> Component.text(plugin.getMinecraftVersion().toString())),
+    JAVA_VERSION(plugin -> Component.text(System.getProperty("java.version"))),
+    JAVA_VENDOR(plugin -> Component.text(System.getProperty("java.vendor"))),
+    SERVER_NAME(plugin -> Component.text(plugin.getServerName())),
+    CLUSTER_ID(plugin -> Component.text(plugin.getSettings().getClusterId().isBlank() ? "None" : plugin.getSettings().getClusterId())),
+    SYNC_MODE(plugin -> Component.text(WordUtils.capitalizeFully(
+            plugin.getSettings().getSynchronization().getMode().toString()
+    ))),
+    DELAY_LATENCY(plugin -> Component.text(
+            plugin.getSettings().getSynchronization().getNetworkLatencyMilliseconds() + "ms"
+    )),
+    DATABASE_TYPE(plugin ->
+            Component.text(plugin.getSettings().getDatabase().getType().getDisplayName() +
+                    (plugin.getSettings().getDatabase().getType() == Database.Type.MONGO ?
+                            (plugin.getSettings().getDatabase().getMongoSettings().isUsingAtlas() ? " Atlas" : "") : ""))
+    ),
+    IS_DATABASE_LOCAL(plugin -> getLocalhostBoolean(plugin.getSettings().getDatabase().getCredentials().getHost())),
+    REDIS_VERSION(plugin -> Component.text(plugin.getRedisManager().getVersion())),
+    USING_REDIS_SENTINEL(plugin -> getBoolean(
+            !plugin.getSettings().getRedis().getSentinel().getMaster().isBlank()
+    )),
+    REDIS_DATABASE(plugin -> Component.text(plugin.getSettings().getRedis().getCredentials().getDatabase())),
+    USING_REDIS_USER(plugin -> getBoolean(
+            !plugin.getSettings().getRedis().getCredentials().getUser().isBlank()
+    )),
+    USING_REDIS_PASSWORD(plugin -> getBoolean(
+            !plugin.getSettings().getRedis().getCredentials().getPassword().isBlank()
+    )),
+    REDIS_USING_SSL(plugin -> getBoolean(
+            plugin.getSettings().getRedis().getCredentials().isUseSsl()
+    )),
+    REDIS_LATENCY(plugin -> Component.text("%sms".formatted(plugin.getRedisManager().getLatency()))),
+    IS_REDIS_LOCAL(plugin -> getLocalhostBoolean(
+            plugin.getSettings().getRedis().getCredentials().getHost()
+    )),
+    LOCKED_USER_HANDLER(plugin -> Component.text(plugin.getLockedHandler().getClass().getSimpleName())),
+    DATA_TYPES(plugin -> Component.join(
+            JoinConfiguration.commas(true),
+            plugin.getRegisteredDataTypes().stream().map(i -> Component.textOfChildren(Component.text(i.toString())
+                            .appendSpace().append(Component.text(i.isEnabled() ? '✔' : '❌')))
+                    .color(i.isEnabled() ? NamedTextColor.GREEN : NamedTextColor.RED)
+                    .hoverEvent(HoverEvent.showText(
+                            Component.text(i.isEnabled() ? "Enabled" : "Disabled")
+                                    .append(Component.newline())
+                                    .append(Component.text("Dependencies: %s".formatted(i.getDependencies()
+                                            .isEmpty() ? "(None)" : i.getDependencies().stream()
+                                            .map(d -> "%s (%s)".formatted(
+                                                    d.getKey().value(), d.isRequired() ? "Required" : "Optional"
+                                            )).collect(Collectors.joining(", ")))
+                                    ).color(NamedTextColor.GRAY))
+                    ))).toList()
+    ));
+
+    private final Function<HuskSync, Component> supplier;
+
+    StatusLine(@NotNull Function<HuskSync, Component> supplier) {
+        this.supplier = supplier;
+    }
+
+    @NotNull
+    public Component get(@NotNull HuskSync plugin) {
+        return Component
+                .text("•").appendSpace()
+                .append(Component.text(
+                        WordUtils.capitalizeFully(name().replaceAll("_", " ")),
+                        TextColor.color(0x848484)
+                ))
+                .append(Component.text(':')).append(Component.space().color(NamedTextColor.WHITE))
+                .append(supplier.apply(plugin));
+    }
+
+    @NotNull
+    public String getValue(@NotNull HuskSync plugin) {
+        return PlainTextComponentSerializer.plainText().serialize(supplier.apply(plugin));
+    }
+
+    @NotNull
+    private static Component getBoolean(boolean value) {
+        return Component.text(value ? "Yes" : "No", value ? NamedTextColor.GREEN : NamedTextColor.RED);
+    }
+
+    @NotNull
+    private static Component getLocalhostBoolean(@NotNull String value) {
+        return getBoolean(value.equals("127.0.0.1") || value.equals("0.0.0.0")
+                || value.equals("localhost") || value.equals("::1"));
+    }
+}

common/src/main/java/net/william278/husksync/util/UserDataDumper.java

@@ -0,0 +1,145 @@
+/*
+ * This file is part of HuskSync, licensed under the Apache License 2.0.
+ *
+ *  Copyright (c) William278 <will27528@gmail.com>
+ *  Copyright (c) contributors
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package net.william278.husksync.util;
+
+import lombok.AccessLevel;
+import lombok.AllArgsConstructor;
+import net.william278.husksync.HuskSync;
+import net.william278.husksync.data.DataSnapshot;
+import net.william278.husksync.user.User;
+import net.william278.toilet.web.Flusher;
+import org.jetbrains.annotations.NotNull;
+
+import java.io.*;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.time.format.DateTimeFormatter;
+import java.util.Locale;
+import java.util.StringJoiner;
+import java.util.logging.Level;
+
+import static net.william278.husksync.util.DumpProvider.BYTEBIN_URL;
+
+/**
+ * Utility class for dumping {@link DataSnapshot}s to a file or as a paste on the web
+ */
+@AllArgsConstructor(access = AccessLevel.PRIVATE)
+public class UserDataDumper implements Flusher {
+
+    private static final String PASTE_VIEWER_URL = "https://pastes.dev";
+
+    private final DataSnapshot.Packed snapshot;
+    private final User user;
+    private final HuskSync plugin;
+
+    /**
+     * Create a {@link UserDataDumper} of the given {@link DataSnapshot}
+     *
+     * @param snapshot The {@link DataSnapshot} to dump
+     * @param user     The {@link User} whose data is being dumped
+     * @param plugin   The implementing {@link HuskSync} plugin
+     * @return A {@link UserDataDumper} for the given {@link DataSnapshot}
+     */
+    @NotNull
+    public static UserDataDumper create(@NotNull DataSnapshot.Packed snapshot, @NotNull User user,
+                                        @NotNull HuskSync plugin) {
+        return new UserDataDumper(snapshot, user, plugin);
+    }
+
+    @NotNull
+    public String toWeb() {
+        try {
+            return "%s/%s".formatted(PASTE_VIEWER_URL, uploadDump(toString(), BYTEBIN_URL, "husksync"));
+        } catch (Throwable e) {
+            plugin.log(Level.SEVERE, "Failed to upload data.", e);
+        }
+        return "(Failed to upload. Try dumping to a file instead.)";
+    }
+
+    /**
+     * Dump the {@link DataSnapshot} to a file and return the file name
+     *
+     * @return the relative path of the file the data was dumped to
+     */
+    @NotNull
+    public String toFile() throws IOException {
+        final Path filePath = getFilePath();
+        try (final FileWriter writer = new FileWriter(filePath.toFile(), StandardCharsets.UTF_8, false)) {
+            writer.write(toString()); // Write the data from #getString to the file using a writer
+            return filePath.toString();
+        } catch (IOException e) {
+            throw new IOException("Failed to write dump to file", e);
+        }
+    }
+
+    /**
+     * Get the file path to dump the data to
+     *
+     * @return the file path
+     * @throws IOException if the prerequisite dumps parent folder could not be created
+     */
+    @NotNull
+    private Path getFilePath() throws IOException {
+        return getDumpsFolder().resolve(getFileName());
+    }
+
+    /**
+     * Get the folder to dump the data to and create it if it does not exist
+     *
+     * @return the dumps folder
+     * @throws IOException if the folder could not be created
+     */
+    @NotNull
+    private Path getDumpsFolder() throws IOException {
+        final Path dumps = plugin.getConfigDirectory().resolve("dumps");
+        if (!Files.exists(dumps)) {
+            Files.createDirectory(dumps);
+        }
+        return dumps;
+    }
+
+    /**
+     * Get the name of the file to dump the data snapshot to
+     *
+     * @return the file name
+     */
+    @NotNull
+    private String getFileName() {
+        return new StringJoiner("_")
+                .add(user.getName())
+                .add(snapshot.getTimestamp().format(DateTimeFormatter.ofPattern("yyyy-MM-dd_HH-mm-ss")))
+                .add(snapshot.getSaveCause().name().toLowerCase(Locale.ENGLISH))
+                .add(snapshot.getShortId())
+                + ".json";
+    }
+
+    /**
+     * Dumps the data snapshot to a string
+     *
+     * @return the data snapshot as a string
+     */
+    @Override
+    @NotNull
+    public String toString() {
+        return snapshot.asJson(plugin);
+    }
+
+}

common/src/main/resources/database/mariadb_schema.sql

@@ -29,4 +29,28 @@ CREATE TABLE IF NOT EXISTS `%user_data_table%`
     FOREIGN KEY (`player_uuid`) REFERENCES `%users_table%` (`uuid`) ON DELETE CASCADE
 ) ENGINE = InnoDB
   DEFAULT CHARSET = utf8mb4
-  COLLATE = utf8mb4_unicode_ci;
+  COLLATE = utf8mb4_unicode_ci;
+
+-- Create the map data table if it does not exist
+CREATE TABLE IF NOT EXISTS `%map_data_table%`
+(
+    `server_name` varchar(32) NOT NULL,
+    `map_id`      int         NOT NULL,
+    `data`        longblob    NOT NULL,
+    PRIMARY KEY (`server_name`, `map_id`)
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4
+  COLLATE = utf8mb4_unicode_ci;
+
+-- Create the map ids table if it does not exist
+CREATE TABLE IF NOT EXISTS `%map_ids_table%`
+(
+    `from_server_name` varchar(32) NOT NULL,
+    `from_id`          int         NOT NULL,
+    `to_server_name`   varchar(32) NOT NULL,
+    `to_id`            int         NOT NULL,
+    PRIMARY KEY (`from_server_name`, `from_id`, `to_server_name`),
+    FOREIGN KEY (`from_server_name`, `from_id`) REFERENCES `%map_data_table%` (`server_name`, `map_id`) ON DELETE CASCADE
+) ENGINE = InnoDB
+  DEFAULT CHARSET = utf8mb4
+  COLLATE = utf8mb4_unicode_ci;