Fixed bugs

Updated Lands integration a bit && Renamed async-display.enabled to async-display.always-enabled

.github/dependabot.yml

@@ -0,0 +1,11 @@
+# To get started with Dependabot version updates, you'll need to specify which
+# package ecosystems to update and where the package manifests are located.
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "gradle" # See documentation for possible values
+    directory: "/" # Location of package manifests
+    schedule:
+      interval: "daily"

.gitignore

@@ -14,6 +14,7 @@ bin/
 # Gradle
 .gradle
 **/build/
+**/out/
 !eco-api/src/**/build/
 .gradletasknamecache
 !gradle-wrapper.jar

CONTRIBUTING.md

@@ -5,20 +5,17 @@
 - The pull request must not have any checkstyle issues.
 - Every method and field must have a javadoc attached.
 
-2. Use lombok wherever possible.
+2. Use JetBrains annotations
-- @Getter, @Setter, @UtilityClass only.
-
-3. Use JetBrains annotations
 - Every parameter should be annotated with @NotNull or @Nullable
 - Use @NotNull over lombok @NonNull
 
-4. Imports
+3. Imports
 - No group (*) imports.
 - No static imports.
 
 ## Dependency Injection
 - eco uses Dependency Injection
-- Any calls to AbstractEcoPlugin#getInstance are code smells and should never be used unless **absolutely necessary**.
+- Any calls to Eco#getHandler#getEcoPlugin are code smells and should never be used unless **absolutely necessary**.
 - NamespacedKeys, FixedMetadataValues, Runnables, and Schedules should be managed using AbstractEcoPlugin through DI.
 - Any DI class should extend PluginDependent where possible. If the class extends another, then you **must** store the plugin instance in a private final variable called **plugin** with a private or protected getter.
 

README.md

@@ -1,22 +1,37 @@
-<h1 align="center">
+# eco
-  <br>
+eco is a powerful Spigot development library that simplifies the process of plugin creation and supercharges
-  <img src="https://i.imgur.com/p5uR2Qp.png" alt="eco logo" width="256">
+your plugins.
-  <br>
+It's the engine behind [EcoEnchants](https://polymart.org/resource/490), [Reforges](https://polymart.org/resource/1330),
-</h1>
+[EcoItems](https://polymart.org/resource/1247), [EcoSkills](https://polymart.org/resource/1351),
+[EcoArmor](https://polymart.org/resource/687), [Talismans](https://polymart.org/resource/611),
+and many more.
 
-<h4 align="center">eco - Simplify spigot development.</h4>
+<p>
+    <a href="https://github.com/Auxilor/eco/releases">
+        <img alt="spigot" src="https://img.shields.io/github/v/release/Auxilor/eco?color=informational"/>
+    </a>
+    <a href="https://bstats.org/plugin/bukkit/EcoEnchants" alt="bstats servers">
+        <img src="https://img.shields.io/bstats/servers/7666?color=informational"/>
+    </a>
+    <a href="https://bstats.org/plugin/bukkit/EcoEnchants" alt="bstats players">
+        <img src="https://img.shields.io/bstats/players/7666?color=informational"/>
+    </a>
+    <a href="https://plugins.auxilor.io/" alt="Docs (gitbook)">
+        <img src="https://img.shields.io/badge/docs-gitbook-informational"/>
+    </a>
+    <a href="https://discord.gg/ZcwpSsE/" alt="Discord">
+        <img src="https://img.shields.io/discord/452518336627081236?label=discord&color=informational"/>
+    </a>
+</p>
 
-### Plugin Information
+# For server owners
 - Requires ProtocolLib to be installed: get the latest version [here](https://www.spigotmc.org/resources/protocollib.1997/)
 - Supports 1.16.5+
 
-### bStats
+# For developers
-<img src="https://bstats.org/signatures/bukkit/eco.svg" width="512">
-
-# Information for development
 
 ## Javadoc
-The 6.0.0 Javadoc can be found [here](https://javadoc.jitpack.io/com/willfp/eco/6.0.0/javadoc/)
+The 6.13.0 Javadoc can be found [here](https://javadoc.jitpack.io/com/willfp/eco/6.13.0/javadoc/)
 
 ## Plugin Information
 
@@ -31,7 +46,6 @@ depend:
 eco is available from any of these places:
 
 - [GitHub](https://github.com/Auxilor/eco/releases)
-- [Spigot](https://www.spigotmc.org/resources/eco.87955/)
 - [Polymart](https://polymart.org/resource/eco.773)
 - [Build it locally](https://github.com/Auxilor/eco#build-locally).
 
@@ -52,7 +66,7 @@ dependencies {
 }
 ```
 
-Replace `Tag` with a release tag for eco, eg `6.0.0`.
+Replace `Tag` with a release tag for eco, eg `6.13.0`.
 
 Maven:
 
@@ -72,7 +86,7 @@ Maven:
 </dependency>
 ```
 
-Replace `Tag` with a release tag for eco, eg `6.0.0`.
+Replace `Tag` with a release tag for eco, eg `6.13.0`.
 
 ## Build locally:
 
@@ -85,81 +99,21 @@ cd eco
 ./gradlew build
 ```
 
-# Features
-
-Here's a list of some (not all) of the features of eco:
-
-- Command system with subcommands
-- Reworked config system
-- JSON Config Support
-- Client-Side item display
-- World drop system
-- Event manager
-    - PlayerJumpEvent
-    - ArmorEquipEvent
-    - EntityDeathByEntityEvent
-    - NaturalExpGainEvent
-- Plugin extensions (Plugins for plugins)
-- GUI System
-- Integration system for external plugins
-    - Anticheat support
-        - AAC
-        - Matrix
-        - NCP
-        - Spartan
-        - Vulcan
-    - Antigrief/Combat support
-        - CombatLogX (V10 + V11)
-        - FactionsUUID
-        - GriefPrevention
-        - Kingdoms
-        - Lands
-        - Towny
-        - WorldGuard
-    - mcMMO support
-    - Custom Items support
-        - Oraxen
-    - PlaceholderAPI support
-- NMS Proxy / Wrapper system built in
-- Custom Items system
-- Crafting Recipe handler
-- Tuples
-- Support uploading to / downloading from hastebin
-- Packet System (via ProtocolLib)
-- Dependency Injection systems
-- Prerequisite system
-- API additions (via utility classes)
-    - Get bow from arrow
-    - Break a block as a player
-    - Get a vein of blocks
-    - Create 2D lists
-    - Create NamespacedKeys safely
-    - Random number, distribution, roman numerals
-    - Set skull texture
-    - Format all strings
-        - Hex Support
-        - Gradient Support
-        - Placeholder Support
-    - Get a scoreboard team from any color
-    - Telekinesis (Drops straight to inventory) system
-    - More vector options
-- Update checker
-- bStats integration
-- Reworked systems for:
-    - NamespacedKey
-    - MetadataValue
-    - Runnables / Scheduling
-
-... and a lot more!
-
 ## License
 
 *Click here to read [the entire license](https://github.com/Auxilor/eco/blob/master/LICENSE.md).*
 
 <h1 align="center">
+  Check out our partners!
   <br>
+  <div style="width: 50%; margin: 0 auto;">
+  <br>
+    <a href="https://gamersupps.gg/discount/Auxilor?afmc=Auxilor" target="_blank">
+      <img src="https://i.imgur.com/7mFhlQO.png" alt="supps banner">
+    </a>
     <a href="https://dedimc.promo/Auxilor" target="_blank">
-      <img src="https://i.imgur.com/zdDLhFA.png" alt="dedimc banner">
+      <img src="https://i.imgur.com/x9aeH38.png" alt="dedimc banner">
     </a>
   <br>
+  </div>
 </h1>

build.gradle

@@ -7,7 +7,11 @@ plugins {
 
 dependencies {
     implementation project(":eco-api")
-    implementation project(":eco-core").getSubprojects()
+    implementation project(":eco-core:core-plugin")
+    implementation project(":eco-core:core-proxy")
+    implementation project(":eco-core:core-backend")
+    implementation project(":eco-core:core-nms:v1_16_R3")
+    implementation project(path: ":eco-core:core-nms:v1_17_R1", configuration: 'mapped')
 }
 
 allprojects {
@@ -21,13 +25,16 @@ allprojects {
         mavenLocal()
         maven { url 'https://jitpack.io' }
 
+        // SuperiorSkyblock2
+        maven { url 'https://repo.bg-software.com/repository/api/' }
+
         // NMS (for jitpack compilation)
         maven { url 'https://repo.codemc.org/repository/nms/' }
 
-        // bStats, mcMMO
+        // bStats, mcMMO, BentoBox
-        maven { url 'https://repo.codemc.org/repository/maven-public' }
+        maven { url 'https://repo.codemc.org/repository/maven-public/' }
 
-        // Spigot API
+        // Spigot API, Bungee API
         maven { url 'https://hub.spigotmc.org/nexus/content/repositories/snapshots/' }
 
         // PlaceholderAPI
@@ -47,16 +54,17 @@ allprojects {
 
         // CombatLogX
         maven { url 'https://nexus.sirblobman.xyz/repository/public/' }
+
+        // IridiumSkyblock
+        maven { url 'https://nexus.iridiumdevelopment.net/repository/maven-releases/' }
     }
 
     dependencies {
         compileOnly 'org.jetbrains:annotations:19.0.0'
 
-        // Lombok
+        // Test
-        compileOnly 'org.projectlombok:lombok:1.18.20'
+        testImplementation 'org.junit.jupiter:junit-jupiter-api:5.3.1'
-        annotationProcessor 'org.projectlombok:lombok:1.18.20'
+        testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
-        testCompileOnly 'org.projectlombok:lombok:1.18.20'
-        testAnnotationProcessor 'org.projectlombok:lombok:1.18.20'
     }
 
     tasks.withType(JavaCompile) {
@@ -75,7 +83,8 @@ allprojects {
     }
 
     shadowJar {
-        relocate('org.bstats.bukkit', 'com.willfp.eco.shaded.bstats')
+        relocate('org.bstats', 'com.willfp.eco.shaded.bstats')
+        relocate('net.kyori.adventure.text.minimessage', 'com.willfp.eco.shaded.minimessage')
     }
 
     jar {
@@ -92,6 +101,18 @@ allprojects {
         withSourcesJar()
     }
 
+    test {
+        useJUnitPlatform()
+
+        // Always run tests, even when nothing changed.
+        dependsOn cleanTest
+
+        // Show test results.
+        testLogging {
+            events "passed", "skipped", "failed"
+        }
+    }
+
     compileJava.options.encoding = 'UTF-8'
     compileJava.dependsOn clean
 

config/checkstyle/checkstyle.xml

@@ -45,7 +45,7 @@
     -->
     <property name="severity" value="error"/>
 
-    <property name="fileExtensions" value="java, properties, xml"/>
+    <property name="fileExtensions" value="java, properties, xml, kt"/>
 
     <!-- Excludes all 'module-info.java' files              -->
     <!-- See https://checkstyle.org/config_filefilters.html -->
@@ -66,6 +66,7 @@
     <module name="FileLength"/>
     <module name="LineLength">
         <property name="fileExtensions" value="java"/>
+        <property name="fileExtensions" value="kt"/>
         <property name="max" value="200"/>
     </module>
 

eco-api/build.gradle

@@ -6,19 +6,24 @@ group 'com.willfp'
 version rootProject.version
 
 dependencies {
-    compileOnly 'org.spigotmc:spigot-api:1.17-R0.1-SNAPSHOT'
+    // Adventure
-    compileOnly 'org.apache.maven:maven-artifact:3.0.3'
+    compileOnly 'net.kyori:adventure-platform-bukkit:4.0.0'
-    compileOnly 'org.bstats:bstats-bukkit:1.7'
+    compileOnly 'net.kyori:adventure-text-minimessage:4.1.0-SNAPSHOT'
-    compileOnly 'com.comphenix.protocol:ProtocolLib:4.6.0-SNAPSHOT'
+    compileOnly 'net.kyori:adventure-api:4.9.2'
-    compileOnly 'com.google.code.gson:gson:2.8.7'
+    compileOnly 'net.kyori:adventure-text-serializer-gson:4.9.2'
+    compileOnly 'net.kyori:adventure-text-serializer-legacy:4.9.2'
+
+    // Other
+    compileOnly 'org.spigotmc:spigot-api:1.17.1-R0.1-SNAPSHOT'
+    compileOnly 'org.apache.maven:maven-artifact:3.8.1'
+    compileOnly 'com.comphenix.protocol:ProtocolLib:4.7.1-SNAPSHOT'
+    compileOnly 'com.google.code.gson:gson:2.8.8'
 }
 
 java {
     withJavadocJar()
 }
 
-compileJava.options.encoding = 'UTF-8'
-compileJava.dependsOn clean
 
 build.dependsOn publishToMavenLocal
 

eco-api/src/main/java/com/willfp/eco/core/AbstractPacketAdapter.java

@@ -6,7 +6,6 @@ import com.comphenix.protocol.events.ListenerPriority;
 import com.comphenix.protocol.events.PacketAdapter;
 import com.comphenix.protocol.events.PacketContainer;
 import com.comphenix.protocol.events.PacketEvent;
-import lombok.Getter;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 
@@ -26,7 +25,6 @@ public abstract class AbstractPacketAdapter extends PacketAdapter {
      * <p>
      * Useful for monitor priority adapters that <b>must</b> be ran last.
      */
-    @Getter
     private final boolean postLoad;
 
     /**
@@ -134,4 +132,13 @@ public abstract class AbstractPacketAdapter extends PacketAdapter {
             ProtocolLibrary.getProtocolManager().addPacketListener(this);
         }
     }
+
+    /**
+     * Get if the packet adapter should be loaded last.
+     *
+     * @return If post load.
+     */
+    public boolean isPostLoad() {
+        return this.postLoad;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/Eco.java

@@ -1,7 +1,5 @@
 package com.willfp.eco.core;
 
-import lombok.Getter;
-import lombok.experimental.UtilityClass;
 import org.apache.commons.lang.Validate;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
@@ -11,30 +9,46 @@ import org.jetbrains.annotations.NotNull;
  *
  * @see Handler
  */
-@UtilityClass
+public final class Eco {
-public class Eco {
     /**
      * Instance of eco handler.
+     */
+    @ApiStatus.Internal
+    private static Handler handler;
+
+    /**
+     * Set the handler.
+     * @param handler The handler.
+     */
+    @ApiStatus.Internal
+    public static void setHandler(@NotNull final Handler handler) {
+        Validate.isTrue(Eco.handler == null, "Already initialized!");
+
+        Eco.handler = handler;
+    }
+
+    /**
+     * Get the instance of the eco handler.
      * <p>
      * The handler is, in essence, a way to interface between the eco-api
      * frontend module, and the eco-backend implementations.
      * <p>
      * There shouldn't really be any reason to ever use the handler
-     * in your own plugins, but if you want to then you can - it's
+     * in your own plugins, and you are likely to break things. All parts of
-     * just a part of the API like any other.
+     * the handler are abstracted into logically named parts of the API.
-     */
+     * <p>
-    @Getter
+     * In versions of eco before 6.12.0, the handler was considered part of
-    private Handler handler;
+     * the eco API, however it has since been moved into an internal component
-
+     * that shouldn't be used in your plugins.
-    /**
-     * Set the handler.
      *
-     * @param handler The handler.
+     * @return The handler.
      */
     @ApiStatus.Internal
-    public void setHandler(@NotNull final Handler handler) {
+    public static Handler getHandler() {
-        Validate.isTrue(Eco.handler == null, "Already initialized!");
+        return handler;
+    }
 
-        Eco.handler = handler;
+    private Eco() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/core/EcoPlugin.java

@@ -7,6 +7,7 @@ import com.willfp.eco.core.config.updating.ConfigHandler;
 import com.willfp.eco.core.display.Display;
 import com.willfp.eco.core.display.DisplayModule;
 import com.willfp.eco.core.events.EventManager;
+import com.willfp.eco.core.extensions.Extension;
 import com.willfp.eco.core.extensions.ExtensionLoader;
 import com.willfp.eco.core.factory.MetadataValueFactory;
 import com.willfp.eco.core.factory.NamespacedKeyFactory;
@@ -17,10 +18,8 @@ import com.willfp.eco.core.proxy.AbstractProxy;
 import com.willfp.eco.core.proxy.ProxyFactory;
 import com.willfp.eco.core.scheduling.Scheduler;
 import com.willfp.eco.core.web.UpdateChecker;
-import lombok.Getter;
 import org.apache.commons.lang.Validate;
 import org.apache.maven.artifact.versioning.DefaultArtifactVersion;
-import org.bstats.bukkit.Metrics;
 import org.bukkit.Bukkit;
 import org.bukkit.configuration.file.FileConfiguration;
 import org.bukkit.event.Listener;
@@ -52,77 +51,66 @@ import java.util.stream.Collectors;
  * <b>IMPORTANT: When reloading a plugin, all runnables / tasks will
  * be cancelled.</b>
  */
-public abstract class EcoPlugin extends JavaPlugin {
+@SuppressWarnings("unused")
+public abstract class EcoPlugin extends JavaPlugin implements PluginLike {
     /**
-     * The spigot resource ID of the plugin.
+     * The polymart resource ID of the plugin.
      */
-    @Getter
     private final int resourceId;
 
     /**
      * The bStats resource ID of the plugin.
      */
-    @Getter
     private final int bStatsId;
 
     /**
      * The package where proxy implementations are.
      */
-    @Getter
     private final String proxyPackage;
 
     /**
      * The color of the plugin, used in messages.
      */
-    @Getter
     private final String color;
 
     /**
      * Loaded integrations.
      */
-    @Getter
     private final Set<String> loadedIntegrations = new HashSet<>();
 
     /**
      * The internal plugin scheduler.
      */
-    @Getter
     private final Scheduler scheduler;
 
     /**
      * The internal plugin Event Manager.
      */
-    @Getter
     private final EventManager eventManager;
 
     /**
      * Config.yml.
      */
-    @Getter
     private final ConfigYml configYml;
 
     /**
      * Lang.yml.
      */
-    @Getter
     private final LangYml langYml;
 
     /**
      * The internal factory to produce {@link org.bukkit.NamespacedKey}s.
      */
-    @Getter
     private final NamespacedKeyFactory namespacedKeyFactory;
 
     /**
      * The internal factory to produce {@link org.bukkit.metadata.FixedMetadataValue}s.
      */
-    @Getter
     private final MetadataValueFactory metadataValueFactory;
 
     /**
      * The internal factory to produce {@link com.willfp.eco.core.scheduling.RunnableTask}s.
      */
-    @Getter
     private final RunnableFactory runnableFactory;
 
     /**
@@ -130,19 +118,16 @@ public abstract class EcoPlugin extends JavaPlugin {
      *
      * @see com.willfp.eco.core.extensions.Extension
      */
-    @Getter
     private final ExtensionLoader extensionLoader;
 
     /**
      * The handler class for updatable classes.
      */
-    @Getter
     private final ConfigHandler configHandler;
 
     /**
      * The display module for the plugin.
      */
-    @Getter
     private DisplayModule displayModule;
 
     /**
@@ -153,30 +138,28 @@ public abstract class EcoPlugin extends JavaPlugin {
     /**
      * If the server is running an outdated version of the plugin.
      */
-    @Getter
     private boolean outdated = false;
 
     /**
      * If the plugin supports extensions.
      */
-    @Getter
     private final boolean supportingExtensions;
 
     /**
      * The proxy factory.
      */
-    @Getter
+    @Nullable
     private final ProxyFactory proxyFactory;
 
     /**
-     * Create a new plugin without a specified color, proxy support, spigot, or bStats.
+     * Create a new plugin without a specified color, proxy support, polymart, or bStats.
      */
     protected EcoPlugin() {
         this("&f");
     }
 
     /**
-     * Create a new plugin without proxy support, spigot, or bStats.
+     * Create a new plugin without proxy support, polymart, or bStats.
      *
      * @param color The color.
      */
@@ -186,7 +169,7 @@ public abstract class EcoPlugin extends JavaPlugin {
 
 
     /**
-     * Create a new plugin unlinked to spigot and bStats.
+     * Create a new plugin unlinked to polymart and bStats.
      *
      * @param proxyPackage The package where proxy implementations are stored.
      * @param color        The color of the plugin (used in messages, using standard formatting)
@@ -199,7 +182,7 @@ public abstract class EcoPlugin extends JavaPlugin {
     /**
      * Create a new plugin without proxy or extension support.
      *
-     * @param resourceId The spigot resource ID for the plugin.
+     * @param resourceId The polymart resource ID for the plugin.
      * @param bStatsId   The bStats resource ID for the plugin.
      * @param color      The color of the plugin (used in messages, using standard formatting)
      */
@@ -212,7 +195,7 @@ public abstract class EcoPlugin extends JavaPlugin {
     /**
      * Create a new plugin without proxy support.
      *
-     * @param resourceId           The spigot resource ID for the plugin.
+     * @param resourceId           The polymart resource ID for the plugin.
      * @param bStatsId             The bStats resource ID for the plugin.
      * @param color                The color of the plugin (used in messages, using standard formatting)
      * @param supportingExtensions If the plugin supports extensions.
@@ -227,7 +210,7 @@ public abstract class EcoPlugin extends JavaPlugin {
     /**
      * Create a new plugin without extension support.
      *
-     * @param resourceId   The spigot resource ID for the plugin.
+     * @param resourceId   The polymart resource ID for the plugin.
      * @param bStatsId     The bStats resource ID for the plugin.
      * @param proxyPackage The package where proxy implementations are stored.
      * @param color        The color of the plugin (used in messages, using standard formatting)
@@ -242,7 +225,7 @@ public abstract class EcoPlugin extends JavaPlugin {
     /**
      * Create a new plugin.
      *
-     * @param resourceId           The spigot resource ID for the plugin.
+     * @param resourceId           The polymart resource ID for the plugin.
      * @param bStatsId             The bStats resource ID for the plugin.
      * @param proxyPackage         The package where proxy implementations are stored.
      * @param color                The color of the plugin (used in messages, using standard formatting)
@@ -305,10 +288,27 @@ public abstract class EcoPlugin extends JavaPlugin {
         this.logger = Eco.getHandler().createLogger(this);
         this.proxyFactory = this.proxyPackage.equalsIgnoreCase("") ? null : Eco.getHandler().createProxyFactory(this);
 
-        this.langYml = new LangYml(this);
+        this.langYml = this.createLangYml();
-        this.configYml = new ConfigYml(this);
+        this.configYml = this.createConfigYml();
 
         Eco.getHandler().addNewPlugin(this);
+
+        /*
+        The minimum eco version check was moved here because it's very common
+        to add a lot of code in the constructor of plugins; meaning that the plugin
+        can throw errors without it being obvious to the user that the reason is
+        because they have an outdated version of eco installed.
+         */
+
+        DefaultArtifactVersion runningVersion = new DefaultArtifactVersion(Eco.getHandler().getEcoPlugin().getDescription().getVersion());
+        DefaultArtifactVersion requiredVersion = new DefaultArtifactVersion(this.getMinimumEcoVersion());
+        if (!(runningVersion.compareTo(requiredVersion) > 0 || runningVersion.equals(requiredVersion))) {
+            this.getLogger().severe("You are running an outdated version of eco!");
+            this.getLogger().severe("You must be on at least" + this.getMinimumEcoVersion());
+            this.getLogger().severe("Download the newest version here:");
+            this.getLogger().severe("https://polymart.org/download/773/recent/JSpprMspkuyecf5y1wQ2Jn8OoLQSQ_IW");
+            Bukkit.getPluginManager().disablePlugin(this);
+        }
     }
 
     /**
@@ -336,29 +336,22 @@ public abstract class EcoPlugin extends JavaPlugin {
             });
         }
 
-        DefaultArtifactVersion runningVersion = new DefaultArtifactVersion(Eco.getHandler().getEcoPlugin().getDescription().getVersion());
-        DefaultArtifactVersion requiredVersion = new DefaultArtifactVersion(this.getMinimumEcoVersion());
-        if (!(runningVersion.compareTo(requiredVersion) > 0 || runningVersion.equals(requiredVersion))) {
-            this.getLogger().severe("You are running an outdated version of eco!");
-            this.getLogger().severe("You must be on at least" + this.getMinimumEcoVersion());
-            this.getLogger().severe("Download the newest version here:");
-            this.getLogger().severe("https://polymart.org/download/773/recent/JSpprMspkuyecf5y1wQ2Jn8OoLQSQ_IW");
-            Bukkit.getPluginManager().disablePlugin(this);
-        }
-
         if (this.getBStatsId() != 0) {
-            new Metrics(this, this.getBStatsId());
+            Eco.getHandler().registerBStats(this);
         }
 
-        Set<String> enabledPlugins = Arrays.stream(Bukkit.getPluginManager().getPlugins()).map(Plugin::getName).collect(Collectors.toSet());
+        Set<String> enabledPlugins = Arrays.stream(Bukkit.getPluginManager().getPlugins())
+                .map(Plugin::getName)
+                .map(String::toLowerCase)
+                .collect(Collectors.toSet());
 
-        if (enabledPlugins.contains("PlaceholderAPI")) {
+        if (enabledPlugins.contains("PlaceholderAPI".toLowerCase())) {
             this.loadedIntegrations.add("PlaceholderAPI");
             PlaceholderManager.addIntegration(Eco.getHandler().createPAPIIntegration(this));
         }
 
         this.loadIntegrationLoaders().forEach((integrationLoader -> {
-            if (enabledPlugins.contains(integrationLoader.getPluginName())) {
+            if (enabledPlugins.contains(integrationLoader.getPluginName().toLowerCase())) {
                 this.loadedIntegrations.add(integrationLoader.getPluginName());
                 integrationLoader.load();
             }
@@ -405,7 +398,6 @@ public abstract class EcoPlugin extends JavaPlugin {
 
         this.getEventManager().unregisterAllListeners();
         this.getScheduler().cancelAll();
-        this.getConfigHandler().saveAllConfigs();
 
         this.handleDisable();
 
@@ -460,11 +452,15 @@ public abstract class EcoPlugin extends JavaPlugin {
 
         this.reload();
 
+        for (Extension extension : this.getExtensionLoader().getLoadedExtensions()) {
+            extension.handleAfterLoad();
+        }
+
         this.getLogger().info("Loaded " + this.color + this.getName());
     }
 
     /**
-     * Default code to be executed on plugin reload.
+     * Reload the plugin.
      */
     public final void reload() {
         this.getConfigHandler().updateConfigs();
@@ -474,6 +470,23 @@ public abstract class EcoPlugin extends JavaPlugin {
         this.getScheduler().cancelAll();
 
         this.handleReload();
+
+        for (Extension extension : this.extensionLoader.getLoadedExtensions()) {
+            extension.handleReload();
+        }
+    }
+
+    /**
+     * Reload the plugin and return the time taken to reload.
+     *
+     * @return The time.
+     */
+    public final long reloadWithTime() {
+        long startTime = System.currentTimeMillis();
+
+        this.reload();
+
+        return System.currentTimeMillis() - startTime;
     }
 
     /**
@@ -559,6 +572,28 @@ public abstract class EcoPlugin extends JavaPlugin {
      */
     protected abstract List<Listener> loadListeners();
 
+    /**
+     * Useful for custom LangYml implementations.
+     * <p>
+     * Override if needed.
+     *
+     * @return lang.yml.
+     */
+    protected LangYml createLangYml() {
+        return new LangYml(this);
+    }
+
+    /**
+     * Useful for custom ConfigYml implementations.
+     * <p>
+     * Override if needed.
+     *
+     * @return config.yml.
+     */
+    protected ConfigYml createConfigYml() {
+        return new ConfigYml(this);
+    }
+
     /**
      * Create the display module for the plugin.
      *
@@ -601,7 +636,7 @@ public abstract class EcoPlugin extends JavaPlugin {
      * @param <T>        The proxy type.
      * @return The proxy.
      */
-    public <T extends AbstractProxy> T getProxy(@NotNull final Class<T> proxyClass) {
+    public final <T extends AbstractProxy> T getProxy(@NotNull final Class<T> proxyClass) {
         Validate.notNull(proxyFactory, "Plugin does not support proxy!");
 
         return proxyFactory.getProxy(proxyClass);
@@ -680,4 +715,168 @@ public abstract class EcoPlugin extends JavaPlugin {
     public static Set<String> getPluginNames() {
         return new HashSet<>(Eco.getHandler().getLoadedPlugins());
     }
+
+    /**
+     * Get the polymart resource ID.
+     *
+     * @return The resource ID.
+     */
+    public int getResourceId() {
+        return this.resourceId;
+    }
+
+    /**
+     * Get the bStats ID.
+     *
+     * @return The ID.
+     */
+    public int getBStatsId() {
+        return this.bStatsId;
+    }
+
+    /**
+     * Get the proxy package.
+     *
+     * @return The package where proxies are contained.
+     */
+    public String getProxyPackage() {
+        return this.proxyPackage;
+    }
+
+    /**
+     * Get the plugin color (uses legacy formatting).
+     *
+     * @return The color.
+     */
+    public String getColor() {
+        return this.color;
+    }
+
+    /**
+     * Get all loaded integration names.
+     *
+     * @return The integrations.
+     */
+    public Set<String> getLoadedIntegrations() {
+        return this.loadedIntegrations;
+    }
+
+    /**
+     * Get the scheduler.
+     *
+     * @return The scheduler.
+     */
+    public Scheduler getScheduler() {
+        return this.scheduler;
+    }
+
+    /**
+     * Get the event manager.
+     *
+     * @return The event manager.
+     */
+    public EventManager getEventManager() {
+        return this.eventManager;
+    }
+
+    /**
+     * Get config.yml.
+     *
+     * @return config.yml.
+     */
+    public ConfigYml getConfigYml() {
+        return this.configYml;
+    }
+
+    /**
+     * Get lang.yml.
+     *
+     * @return lang.yml.
+     */
+    public LangYml getLangYml() {
+        return this.langYml;
+    }
+
+    /**
+     * Get the NamespacedKey factory.
+     *
+     * @return The factory.
+     */
+    public NamespacedKeyFactory getNamespacedKeyFactory() {
+        return this.namespacedKeyFactory;
+    }
+
+    /**
+     * Get the metadata value factory.
+     *
+     * @return The factory.
+     */
+    public MetadataValueFactory getMetadataValueFactory() {
+        return this.metadataValueFactory;
+    }
+
+    /**
+     * Get the runnable factory.
+     *
+     * @return The runnable factory.
+     */
+    public RunnableFactory getRunnableFactory() {
+        return this.runnableFactory;
+    }
+
+    /**
+     * Get the extension loader.
+     *
+     * @return The extension loader.
+     */
+    public ExtensionLoader getExtensionLoader() {
+        return this.extensionLoader;
+    }
+
+    /**
+     * Get the config handler.
+     *
+     * @return The config handler.
+     */
+    public ConfigHandler getConfigHandler() {
+        return this.configHandler;
+    }
+
+    /**
+     * Get the plugin's display module.
+     *
+     * @return The display module.
+     */
+    @Nullable
+    public DisplayModule getDisplayModule() {
+        return this.displayModule;
+    }
+
+    /**
+     * Get if the plugin is outdated.
+     *
+     * @return If outdated.
+     */
+    public boolean isOutdated() {
+        return this.outdated;
+    }
+
+    /**
+     * Get if the plugin supports extensions.
+     *
+     * @return If extensions are supported.
+     */
+    public boolean isSupportingExtensions() {
+        return this.supportingExtensions;
+    }
+
+    /**
+     * Get the proxy factory.
+     *
+     * @return The proxy factory.
+     */
+    @Nullable
+    public ProxyFactory getProxyFactory() {
+        return this.proxyFactory;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/Handler.java

@@ -2,25 +2,34 @@ package com.willfp.eco.core;
 
 import com.willfp.eco.core.config.updating.ConfigHandler;
 import com.willfp.eco.core.config.wrapper.ConfigFactory;
+import com.willfp.eco.core.data.keys.KeyRegistry;
+import com.willfp.eco.core.data.PlayerProfileHandler;
 import com.willfp.eco.core.drops.DropQueueFactory;
 import com.willfp.eco.core.events.EventManager;
 import com.willfp.eco.core.extensions.ExtensionLoader;
 import com.willfp.eco.core.factory.MetadataValueFactory;
 import com.willfp.eco.core.factory.NamespacedKeyFactory;
 import com.willfp.eco.core.factory.RunnableFactory;
+import com.willfp.eco.core.fast.FastItemStack;
 import com.willfp.eco.core.gui.GUIFactory;
 import com.willfp.eco.core.integrations.placeholder.PlaceholderIntegration;
 import com.willfp.eco.core.proxy.Cleaner;
 import com.willfp.eco.core.proxy.ProxyFactory;
+import com.willfp.eco.core.requirement.RequirementFactory;
 import com.willfp.eco.core.scheduling.Scheduler;
+import net.kyori.adventure.platform.bukkit.BukkitAudiences;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
 import java.util.logging.Logger;
 
 /**
- * @see Eco
+ * @see Eco#getHandler()
  */
+@ApiStatus.Internal
 public interface Handler {
     /**
      * Create a scheduler.
@@ -28,6 +37,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The scheduler.
      */
+    @NotNull
     Scheduler createScheduler(@NotNull EcoPlugin plugin);
 
     /**
@@ -36,6 +46,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The event manager.
      */
+    @NotNull
     EventManager createEventManager(@NotNull EcoPlugin plugin);
 
     /**
@@ -44,6 +55,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The factory.
      */
+    @NotNull
     NamespacedKeyFactory createNamespacedKeyFactory(@NotNull EcoPlugin plugin);
 
     /**
@@ -52,6 +64,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The factory.
      */
+    @NotNull
     MetadataValueFactory createMetadataValueFactory(@NotNull EcoPlugin plugin);
 
     /**
@@ -60,6 +73,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The factory.
      */
+    @NotNull
     RunnableFactory createRunnableFactory(@NotNull EcoPlugin plugin);
 
     /**
@@ -68,6 +82,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The factory.
      */
+    @NotNull
     ExtensionLoader createExtensionLoader(@NotNull EcoPlugin plugin);
 
     /**
@@ -76,6 +91,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The handler.
      */
+    @NotNull
     ConfigHandler createConfigHandler(@NotNull EcoPlugin plugin);
 
     /**
@@ -84,6 +100,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The logger.
      */
+    @NotNull
     Logger createLogger(@NotNull EcoPlugin plugin);
 
     /**
@@ -92,6 +109,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The integration.
      */
+    @NotNull
     PlaceholderIntegration createPAPIIntegration(@NotNull EcoPlugin plugin);
 
     /**
@@ -100,6 +118,7 @@ public interface Handler {
      * @param plugin The plugin.
      * @return The factory.
      */
+    @NotNull
     ProxyFactory createProxyFactory(@NotNull EcoPlugin plugin);
 
     /**
@@ -107,6 +126,7 @@ public interface Handler {
      *
      * @return The plugin.
      */
+    @NotNull
     EcoPlugin getEcoPlugin();
 
     /**
@@ -114,6 +134,7 @@ public interface Handler {
      *
      * @return The factory.
      */
+    @NotNull
     ConfigFactory getConfigFactory();
 
     /**
@@ -121,6 +142,7 @@ public interface Handler {
      *
      * @return The factory.
      */
+    @NotNull
     DropQueueFactory getDropQueueFactory();
 
     /**
@@ -128,6 +150,7 @@ public interface Handler {
      *
      * @return The factory.
      */
+    @NotNull
     GUIFactory getGUIFactory();
 
     /**
@@ -135,6 +158,7 @@ public interface Handler {
      *
      * @return The cleaner.
      */
+    @NotNull
     Cleaner getCleaner();
 
     /**
@@ -150,6 +174,7 @@ public interface Handler {
      * @param name The name.
      * @return The plugin.
      */
+    @Nullable
     EcoPlugin getPluginByName(@NotNull String name);
 
     /**
@@ -157,5 +182,53 @@ public interface Handler {
      *
      * @return A list of plugin names in lowercase.
      */
+    @NotNull
     List<String> getLoadedPlugins();
+
+    /**
+     * Create a FastItemStack.
+     *
+     * @param itemStack The base ItemStack.
+     * @return The FastItemStack.
+     */
+    @NotNull
+    FastItemStack createFastItemStack(@NotNull ItemStack itemStack);
+
+    /**
+     * Register bStats metrics.
+     *
+     * @param plugin The plugin.
+     */
+    void registerBStats(@NotNull EcoPlugin plugin);
+
+    /**
+     * Get the requirement factory.
+     *
+     * @return The factory.
+     */
+    @NotNull
+    RequirementFactory getRequirementFactory();
+
+    /**
+     * Get Adventure audiences.
+     *
+     * @return The audiences.
+     */
+    @Nullable
+    BukkitAudiences getAdventure();
+
+    /**
+     * Get the key registry.
+     *
+     * @return The registry.
+     */
+    @NotNull
+    KeyRegistry getKeyRegistry();
+
+    /**
+     * Get the PlayerProfile handler.
+     *
+     * @return The handler.
+     */
+    PlayerProfileHandler getPlayerProfileHandler();
 }

eco-api/src/main/java/com/willfp/eco/core/PluginDependent.java

@@ -1,7 +1,5 @@
 package com.willfp.eco.core;
 
-import lombok.AccessLevel;
-import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -13,7 +11,7 @@ public abstract class PluginDependent<T extends EcoPlugin> {
     /**
      * The {@link EcoPlugin} that is stored.
      */
-    @Getter(AccessLevel.PROTECTED)
+    @NotNull
     private final T plugin;
 
     /**
@@ -24,4 +22,14 @@ public abstract class PluginDependent<T extends EcoPlugin> {
     protected PluginDependent(@NotNull final T plugin) {
         this.plugin = plugin;
     }
+
+    /**
+     * Get the plugin.
+     *
+     * @return The plugin.
+     */
+    @NotNull
+    protected T getPlugin() {
+        return this.plugin;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/PluginLike.java

@@ -0,0 +1,29 @@
+package com.willfp.eco.core;
+
+import com.willfp.eco.core.config.updating.ConfigHandler;
+
+import java.io.File;
+
+/**
+ * Represents any class that acts like a plugin, for example {@link EcoPlugin}
+ * or {@link com.willfp.eco.core.extensions.Extension}. This exists to create
+ * things such as extension base configs rather than needing to pass an instance
+ * of the owning plugin.
+ */
+public interface PluginLike {
+    /**
+     * Get the data folder of the object.
+     * <p>
+     * Returns the plugin data folder for a plugin, or the extension's parent plugin's folder
+     *
+     * @return The data folder.
+     */
+    File getDataFolder();
+
+    /**
+     * Get the handler class for updatable classes.
+     *
+     * @return The config handler.
+     */
+    ConfigHandler getConfigHandler();
+}

eco-api/src/main/java/com/willfp/eco/core/Prerequisite.java

@@ -1,8 +1,8 @@
 package com.willfp.eco.core;
 
+import com.willfp.eco.core.integrations.economy.EconomyManager;
 import com.willfp.eco.core.proxy.ProxyConstants;
 import com.willfp.eco.util.ClassUtils;
-import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
@@ -30,6 +30,17 @@ public class Prerequisite {
             "Requires server to be running paper (or a fork)"
     );
 
+    /**
+     * Requires the server to have vault installed.
+     *
+     * @deprecated Use {@link EconomyManager#hasRegistrations()} instead.
+     */
+    @Deprecated
+    public static final Prerequisite HAS_VAULT = new Prerequisite(
+            () -> ClassUtils.exists("net.milkbowl.vault.economy.Economy"),
+            "Requires server to have vault"
+    );
+
     /**
      * Requires the server to be running 1.17.
      */
@@ -38,10 +49,25 @@ public class Prerequisite {
             "Requires server to be running 1.17+"
     );
 
+    /**
+     * Requires the server to be running an implementation of BungeeCord.
+     */
+    public static final Prerequisite HAS_BUNGEECORD = new Prerequisite(
+            () -> ClassUtils.exists("net.md_5.bungee.api.event.ServerConnectedEvent"),
+            "Requires server to be running BungeeCord (or a fork)"
+    );
+
+    /**
+     * Requires the server to be running an implementation of Velocity.
+     */
+    public static final Prerequisite HAS_VELOCITY = new Prerequisite(
+            () -> ClassUtils.exists("com.velocitypowered.api.event.player.ServerConnectedEvent"),
+            "Requires server to be running Velocity (or a fork)"
+    );
+
     /**
      * If the necessary prerequisite condition has been met.
      */
-    @Getter
     private boolean isMet;
 
     /**
@@ -52,7 +78,6 @@ public class Prerequisite {
     /**
      * The description of the requirements of the prerequisite.
      */
-    @Getter
     private final String description;
 
     /**
@@ -97,4 +122,22 @@ public class Prerequisite {
     static {
         update();
     }
+
+    /**
+     * Get if the prerequisite is met.
+     *
+     * @return If the condition is met.
+     */
+    public boolean isMet() {
+        return this.isMet;
+    }
+
+    /**
+     * Get the description.
+     *
+     * @return The description.
+     */
+    public String getDescription() {
+        return this.description;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/command/CommandBase.java

@@ -42,10 +42,24 @@ public interface CommandBase {
      */
     CommandHandler getHandler();
 
+    /**
+     * Set the handler.
+     *
+     * @param handler The handler.
+     */
+    void setHandler(@NotNull CommandHandler handler);
+
     /**
      * Get the tab completer.
      *
      * @return The tab completer.
      */
     TabCompleteHandler getTabCompleter();
+
+    /**
+     * Set the tab completer.
+     *
+     * @param handler The handler.
+     */
+    void setTabCompleter(@NotNull TabCompleteHandler handler);
 }

eco-api/src/main/java/com/willfp/eco/core/command/impl/HandledCommand.java

@@ -5,8 +5,6 @@ import com.willfp.eco.core.PluginDependent;
 import com.willfp.eco.core.command.CommandBase;
 import com.willfp.eco.core.command.CommandHandler;
 import com.willfp.eco.core.command.TabCompleteHandler;
-import lombok.AccessLevel;
-import lombok.Getter;
 import org.bukkit.command.CommandSender;
 import org.bukkit.entity.Player;
 import org.bukkit.util.StringUtil;
@@ -29,7 +27,6 @@ abstract class HandledCommand extends PluginDependent<EcoPlugin> implements Comm
     /**
      * The name of the command.
      */
-    @Getter
     private final String name;
 
     /**
@@ -37,7 +34,6 @@ abstract class HandledCommand extends PluginDependent<EcoPlugin> implements Comm
      * <p>
      * Written out as a string for flexibility with subclasses.
      */
-    @Getter
     private final String permission;
 
     /**
@@ -45,13 +41,23 @@ abstract class HandledCommand extends PluginDependent<EcoPlugin> implements Comm
      * <p>
      * In other worlds, only allowed to be executed by console.
      */
-    @Getter
     private final boolean playersOnly;
 
+    /**
+     * The actual code to be executed in the command.
+     */
+    private CommandHandler handler = (sender, args) -> {
+        // Do nothing by default
+    };
+
+    /**
+     * The tab completion code to be executed in the command.
+     */
+    private TabCompleteHandler tabCompleter = (sender, args) -> new ArrayList<>();
+
     /**
      * All subcommands for the command.
      */
-    @Getter(AccessLevel.PROTECTED)
     private final List<CommandBase> subcommands;
 
     /**
@@ -164,14 +170,6 @@ abstract class HandledCommand extends PluginDependent<EcoPlugin> implements Comm
         return this.getTabCompleter().tabComplete(sender, Arrays.asList(args));
     }
 
-    @Override
-    public abstract CommandHandler getHandler();
-
-    @Override
-    public TabCompleteHandler getTabCompleter() {
-        return (sender, args) -> new ArrayList<>();
-    }
-
     /**
      * If a sender can execute the command.
      *
@@ -195,4 +193,76 @@ abstract class HandledCommand extends PluginDependent<EcoPlugin> implements Comm
 
         return true;
     }
+
+    /**
+     * Get the command name.
+     *
+     * @return The name.
+     */
+    public String getName() {
+        return this.name;
+    }
+
+    /**
+     * Get the permission required to execute the command.
+     *
+     * @return The permission.
+     */
+    public String getPermission() {
+        return this.permission;
+    }
+
+    /**
+     * Get if the command can only be executed by players.
+     *
+     * @return If players only.
+     */
+    public boolean isPlayersOnly() {
+        return this.playersOnly;
+    }
+
+    /**
+     * Get the actual code to be executed in the command.
+     *
+     * @return The code.
+     */
+    public CommandHandler getHandler() {
+        return this.handler;
+    }
+
+    /**
+     * Get the tab completion code to be executed in the command.
+     *
+     * @return The code.
+     */
+    public TabCompleteHandler getTabCompleter() {
+        return this.tabCompleter;
+    }
+
+    /**
+     * Get the subcommands of the command.
+     *
+     * @return The subcommands.
+     */
+    public List<CommandBase> getSubcommands() {
+        return this.subcommands;
+    }
+
+    /**
+     * Set the command handler.
+     *
+     * @param handler The handler.
+     */
+    public void setHandler(@NotNull final CommandHandler handler) {
+        this.handler = handler;
+    }
+
+    /**
+     * Set the tab completer.
+     *
+     * @param tabCompleter The tab completer.
+     */
+    public void setTabCompleter(@NotNull final TabCompleteHandler tabCompleter) {
+        this.tabCompleter = tabCompleter;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/base/LangYml.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.config.base;
 
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.config.yaml.YamlBaseConfig;
+import com.willfp.eco.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -42,6 +43,18 @@ public class LangYml extends YamlBaseConfig {
      * @return The message with a prefix appended.
      */
     public String getMessage(@NotNull final String message) {
-        return getPrefix() + this.getString("messages." + message);
+        return getMessage(message, StringUtils.FormatOption.WITH_PLACEHOLDERS);
+    }
+
+    /**
+     * Get a chat message.
+     *
+     * @param message The key of the message.
+     * @param option  The format options.
+     * @return The message with a prefix appended.
+     */
+    public String getMessage(@NotNull final String message,
+                             @NotNull final StringUtils.FormatOption option) {
+        return getPrefix() + this.getString("messages." + message, option);
     }
 }

eco-api/src/main/java/com/willfp/eco/core/config/interfaces/Config.java

@@ -1,5 +1,6 @@
 package com.willfp.eco.core.config.interfaces;
 
+import com.willfp.eco.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -165,7 +166,9 @@ public interface Config extends Cloneable {
      * @return The found value, or an empty string if not found.
      */
     @NotNull
-    String getString(@NotNull String path);
+    default String getString(@NotNull String path) {
+        return getString(path, true);
+    }
 
     /**
      * Get a string from config.
@@ -175,8 +178,36 @@ public interface Config extends Cloneable {
      * @return The found value, or an empty string if not found.
      */
     @NotNull
+    default String getString(@NotNull String path,
+                             boolean format) {
+        return this.getString(path, format, StringUtils.FormatOption.WITH_PLACEHOLDERS);
+    }
+
+    /**
+     * Get a string from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param option The format option.
+     * @return The found value, or an empty string if not found.
+     */
+    @NotNull
+    default String getString(@NotNull String path,
+                             @NotNull final StringUtils.FormatOption option) {
+        return this.getString(path, true, option);
+    }
+
+    /**
+     * Get a string from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param format If the string should be formatted.
+     * @param option The format option.
+     * @return The found value, or an empty string if not found.
+     */
+    @NotNull
     String getString(@NotNull String path,
-                     boolean format);
+                     boolean format,
+                     @NotNull StringUtils.FormatOption option);
 
     /**
      * Get a string from config.
@@ -185,7 +216,9 @@ public interface Config extends Cloneable {
      * @return The found value, or null if not found.
      */
     @Nullable
-    String getStringOrNull(@NotNull String path);
+    default String getStringOrNull(@NotNull String path) {
+        return getStringOrNull(path, true);
+    }
 
     /**
      * Get a string from config.
@@ -195,8 +228,36 @@ public interface Config extends Cloneable {
      * @return The found value, or null if not found.
      */
     @Nullable
+    default String getStringOrNull(@NotNull String path,
+                                   boolean format) {
+        return this.getStringOrNull(path, format, StringUtils.FormatOption.WITH_PLACEHOLDERS);
+    }
+
+    /**
+     * Get a string from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param option The format option.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
+    default String getStringOrNull(@NotNull String path,
+                                   @NotNull StringUtils.FormatOption option) {
+        return this.getStringOrNull(path, true, option);
+    }
+
+    /**
+     * Get a string from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param format If the string should be formatted.
+     * @param option The format option.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
     String getStringOrNull(@NotNull String path,
-                           boolean format);
+                           boolean format,
+                           @NotNull StringUtils.FormatOption option);
 
     /**
      * Get a list of strings from config.
@@ -207,7 +268,9 @@ public interface Config extends Cloneable {
      * @return The found value, or a blank {@link java.util.ArrayList} if not found.
      */
     @NotNull
-    List<String> getStrings(@NotNull String path);
+    default List<String> getStrings(@NotNull String path) {
+        return getStrings(path, true);
+    }
 
     /**
      * Get a list of strings from config.
@@ -217,8 +280,36 @@ public interface Config extends Cloneable {
      * @return The found value, or a blank {@link java.util.ArrayList} if not found.
      */
     @NotNull
+    default List<String> getStrings(@NotNull String path,
+                                    boolean format) {
+        return this.getStrings(path, format, StringUtils.FormatOption.WITH_PLACEHOLDERS);
+    }
+
+    /**
+     * Get a list of strings from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param option The format option.
+     * @return The found value, or a blank {@link java.util.ArrayList} if not found.
+     */
+    @Nullable
+    default List<String> getStrings(@NotNull String path,
+                                    @NotNull StringUtils.FormatOption option) {
+        return getStrings(path, true, option);
+    }
+
+    /**
+     * Get a list of strings from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param format If the strings should be formatted.
+     * @param option The option.
+     * @return The found value, or a blank {@link java.util.ArrayList} if not found.
+     */
+    @NotNull
     List<String> getStrings(@NotNull String path,
-                            boolean format);
+                            boolean format,
+                            @NotNull StringUtils.FormatOption option);
 
     /**
      * Get a list of strings from config.
@@ -227,7 +318,9 @@ public interface Config extends Cloneable {
      * @return The found value, or null if not found.
      */
     @Nullable
-    List<String> getStringsOrNull(@NotNull String path);
+    default List<String> getStringsOrNull(@NotNull String path) {
+        return getStringsOrNull(path, true);
+    }
 
     /**
      * Get a list of strings from config.
@@ -237,8 +330,36 @@ public interface Config extends Cloneable {
      * @return The found value, or null if not found.
      */
     @Nullable
+    default List<String> getStringsOrNull(@NotNull String path,
+                                          boolean format) {
+        return getStringsOrNull(path, format, StringUtils.FormatOption.WITH_PLACEHOLDERS);
+    }
+
+    /**
+     * Get a list of strings from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param option The format option.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
+    default List<String> getStringsOrNull(@NotNull String path,
+                                          @NotNull StringUtils.FormatOption option) {
+        return getStringsOrNull(path, true, option);
+    }
+
+    /**
+     * Get a list of strings from config.
+     *
+     * @param path   The key to fetch the value from.
+     * @param format If the strings should be formatted.
+     * @param option The format option.
+     * @return The found value, or null if not found.
+     */
+    @Nullable
     List<String> getStringsOrNull(@NotNull String path,
-                                  boolean format);
+                                  boolean format,
+                                  @NotNull StringUtils.FormatOption option);
 
     /**
      * Get a decimal from config.

eco-api/src/main/java/com/willfp/eco/core/config/interfaces/JSONConfig.java

@@ -29,6 +29,27 @@ public interface JSONConfig extends Config {
     @Nullable
     List<JSONConfig> getSubsectionsOrNull(@NotNull String path);
 
+
+    /**
+     * Get subsection from config.
+     *
+     * @param path The key to check.
+     * @return The subsection. Throws NPE if not found.
+     */
+    @Override
+    @NotNull
+    JSONConfig getSubsection(@NotNull String path);
+
+    /**
+     * Get subsection from config.
+     *
+     * @param path The key to check.
+     * @return The subsection, or null if not found.
+     */
+    @Override
+    @Nullable
+    JSONConfig getSubsectionOrNull(@NotNull String path);
+
     @Override
     JSONConfig clone();
 }

eco-api/src/main/java/com/willfp/eco/core/config/interfaces/LoadableConfig.java

@@ -34,7 +34,7 @@ public interface LoadableConfig {
     File getConfigFile();
 
     /**
-     * Get the config name (including extension)
+     * Get the config name (including extension).
      *
      * @return The name.
      */

eco-api/src/main/java/com/willfp/eco/core/config/json/JSONBaseConfig.java

@@ -0,0 +1,78 @@
+package com.willfp.eco.core.config.json;
+
+import com.willfp.eco.core.Eco;
+import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
+import com.willfp.eco.core.config.json.wrapper.LoadableJSONConfigWrapper;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Config implementation for configs present in the plugin's base directory (eg config.json).
+ * <p>
+ * Automatically updates.
+ */
+public abstract class JSONBaseConfig extends LoadableJSONConfigWrapper {
+    /**
+     * @param configName      The name of the config
+     * @param removeUnused    Whether keys not present in the default config should be removed on update.
+     * @param plugin          The plugin.
+     * @param updateBlacklist Substring of keys to not add/remove keys for.
+     */
+    protected JSONBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final PluginLike plugin,
+                             @NotNull final String... updateBlacklist) {
+        super(
+                Eco.getHandler().getConfigFactory().createUpdatableJSONConfig(
+                        configName,
+                        plugin,
+                        "",
+                        plugin.getClass(),
+                        removeUnused, updateBlacklist
+                )
+        );
+    }
+
+    /**
+     * @param configName   The name of the config
+     * @param removeUnused Whether keys not present in the default config should be removed on update.
+     * @param plugin       The plugin.
+     */
+    protected JSONBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final PluginLike plugin) {
+        super(
+                Eco.getHandler().getConfigFactory().createUpdatableJSONConfig(
+                        configName,
+                        plugin,
+                        "",
+                        plugin.getClass(),
+                        removeUnused
+                )
+        );
+    }
+
+    /**
+     * @param configName      The name of the config
+     * @param removeUnused    Whether keys not present in the default config should be removed on update.
+     * @param plugin          The plugin.
+     * @param updateBlacklist Substring of keys to not add/remove keys for.
+     */
+    protected JSONBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final EcoPlugin plugin,
+                             @NotNull final String... updateBlacklist) {
+        this(configName, removeUnused, (PluginLike) plugin, updateBlacklist);
+    }
+
+    /**
+     * @param configName   The name of the config
+     * @param removeUnused Whether keys not present in the default config should be removed on update.
+     * @param plugin       The plugin.
+     */
+    protected JSONBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final EcoPlugin plugin) {
+        this(configName, removeUnused, (PluginLike) plugin);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/config/json/JSONExtendableConfig.java

@@ -0,0 +1,60 @@
+package com.willfp.eco.core.config.json;
+
+import com.willfp.eco.core.Eco;
+import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
+import com.willfp.eco.core.config.json.wrapper.LoadableJSONConfigWrapper;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Config implementation for configs present in one of two places:
+ * <ul>
+ *     <li>Plugin base directory (eg config.yml, lang.yml)</li>
+ *     <li>Other extension's configs</li>
+ * </ul>
+ * <p>
+ * Automatically updates.
+ */
+public abstract class JSONExtendableConfig extends LoadableJSONConfigWrapper {
+    /**
+     * @param configName       The name of the config
+     * @param removeUnused     Whether keys not present in the default config should be removed on update.
+     * @param plugin           The plugin.
+     * @param updateBlacklist  Substring of keys to not add/remove keys for.
+     * @param subDirectoryPath The subdirectory path.
+     * @param source           The class that owns the resource.
+     */
+    protected JSONExtendableConfig(@NotNull final String configName,
+                                   final boolean removeUnused,
+                                   @NotNull final PluginLike plugin,
+                                   @NotNull final Class<?> source,
+                                   @NotNull final String subDirectoryPath,
+                                   @NotNull final String... updateBlacklist) {
+        super(
+                Eco.getHandler().getConfigFactory().createUpdatableJSONConfig(
+                        configName,
+                        plugin,
+                        subDirectoryPath,
+                        source,
+                        removeUnused,
+                        updateBlacklist
+                )
+        );
+    }
+    /**
+     * @param configName       The name of the config
+     * @param removeUnused     Whether keys not present in the default config should be removed on update.
+     * @param plugin           The plugin.
+     * @param updateBlacklist  Substring of keys to not add/remove keys for.
+     * @param subDirectoryPath The subdirectory path.
+     * @param source           The class that owns the resource.
+     */
+    protected JSONExtendableConfig(@NotNull final String configName,
+                                   final boolean removeUnused,
+                                   @NotNull final EcoPlugin plugin,
+                                   @NotNull final Class<?> source,
+                                   @NotNull final String subDirectoryPath,
+                                   @NotNull final String... updateBlacklist) {
+        this(configName, removeUnused, (PluginLike) plugin, source, subDirectoryPath, updateBlacklist);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/config/json/JSONStaticBaseConfig.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.config.json;
 
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
 import com.willfp.eco.core.config.json.wrapper.LoadableJSONConfigWrapper;
 import org.jetbrains.annotations.NotNull;
 
@@ -18,7 +19,20 @@ public abstract class JSONStaticBaseConfig extends LoadableJSONConfigWrapper {
      * @param plugin     The plugin.
      */
     protected JSONStaticBaseConfig(@NotNull final String configName,
-                                   @NotNull final EcoPlugin plugin) {
+                                   @NotNull final PluginLike plugin) {
         super(Eco.getHandler().getConfigFactory().createLoadableJSONConfig(configName, plugin, "", plugin.getClass()));
     }
+
+    /**
+     * Config implementation for configs present in the plugin's base directory (eg config.json, lang.json).
+     * <p>
+     * Does not automatically update.
+     *
+     * @param configName The name of the config
+     * @param plugin     The plugin.
+     */
+    protected JSONStaticBaseConfig(@NotNull final String configName,
+                                   @NotNull final EcoPlugin plugin) {
+        this(configName, (PluginLike) plugin);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/json/wrapper/JSONConfigWrapper.java

@@ -31,6 +31,16 @@ public abstract class JSONConfigWrapper extends ConfigWrapper<JSONConfig> implem
         return this.getHandle().getSubsectionsOrNull(path);
     }
 
+    @Override
+    public @NotNull JSONConfig getSubsection(@NotNull final String path) {
+        return this.getHandle().getSubsection(path);
+    }
+
+    @Override
+    public @Nullable JSONConfig getSubsectionOrNull(@NotNull final String path) {
+        return this.getHandle().getSubsectionOrNull(path);
+    }
+
     @Override
     public JSONConfig clone() {
         return this.getHandle().clone();

eco-api/src/main/java/com/willfp/eco/core/config/updating/ConfigHandler.java

@@ -4,7 +4,7 @@ import com.willfp.eco.core.config.interfaces.LoadableConfig;
 import org.jetbrains.annotations.NotNull;
 
 /**
- * Every {@link com.willfp.eco.core.EcoPlugin} has a config handler.
+ * Every {@link com.willfp.eco.core.PluginLike} has a config handler.
  * <p>
  * Handles updating and saving configs.
  */

eco-api/src/main/java/com/willfp/eco/core/config/wrapper/ConfigFactory.java

@@ -1,6 +1,6 @@
 package com.willfp.eco.core.config.wrapper;
 
-import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
 import com.willfp.eco.core.config.interfaces.Config;
 import com.willfp.eco.core.config.interfaces.JSONConfig;
 import org.bukkit.configuration.file.YamlConfiguration;
@@ -24,12 +24,30 @@ public interface ConfigFactory {
      * @return The config implementation.
      */
     Config createUpdatableYamlConfig(@NotNull String configName,
-                                     @NotNull EcoPlugin plugin,
+                                     @NotNull PluginLike plugin,
                                      @NotNull String subDirectoryPath,
                                      @NotNull Class<?> source,
                                      boolean removeUnused,
                                      @NotNull String... updateBlacklist);
 
+    /**
+     * Updatable config.
+     *
+     * @param configName       The name of the config
+     * @param plugin           The plugin.
+     * @param subDirectoryPath The subdirectory path.
+     * @param source           The class that owns the resource.
+     * @param removeUnused     Whether keys not present in the default config should be removed on update.
+     * @param updateBlacklist  Substring of keys to not add/remove keys for.
+     * @return The config implementation.
+     */
+    JSONConfig createUpdatableJSONConfig(@NotNull String configName,
+                                         @NotNull PluginLike plugin,
+                                         @NotNull String subDirectoryPath,
+                                         @NotNull Class<?> source,
+                                         boolean removeUnused,
+                                         @NotNull String... updateBlacklist);
+
     /**
      * JSON loadable config.
      *
@@ -40,7 +58,7 @@ public interface ConfigFactory {
      * @return The config implementation.
      */
     JSONConfig createLoadableJSONConfig(@NotNull String configName,
-                                        @NotNull EcoPlugin plugin,
+                                        @NotNull PluginLike plugin,
                                         @NotNull String subDirectoryPath,
                                         @NotNull Class<?> source);
 
@@ -54,7 +72,7 @@ public interface ConfigFactory {
      * @return The config implementation.
      */
     Config createLoadableYamlConfig(@NotNull String configName,
-                                    @NotNull EcoPlugin plugin,
+                                    @NotNull PluginLike plugin,
                                     @NotNull String subDirectoryPath,
                                     @NotNull Class<?> source);
 

eco-api/src/main/java/com/willfp/eco/core/config/wrapper/ConfigWrapper.java

@@ -1,7 +1,7 @@
 package com.willfp.eco.core.config.wrapper;
 
 import com.willfp.eco.core.config.interfaces.Config;
-import lombok.Getter;
+import com.willfp.eco.util.StringUtils;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
@@ -26,7 +26,6 @@ public abstract class ConfigWrapper<T extends Config> implements Config {
      * <p>
      * In general use, though, the handle isn't necessary.
      */
-    @Getter
     private final T handle;
 
     /**
@@ -125,48 +124,33 @@ public abstract class ConfigWrapper<T extends Config> implements Config {
         return handle.getBoolsOrNull(path);
     }
 
-    @Override
-    public @NotNull String getString(@NotNull final String path) {
-        return handle.getString(path);
-    }
 
     @Override
     public @NotNull String getString(@NotNull final String path,
-                                     final boolean format) {
+                                     final boolean format,
-        return handle.getString(path, format);
+                                     @NotNull final StringUtils.FormatOption option) {
-    }
+        return handle.getString(path, format, option);
-
-    @Override
-    public @Nullable String getStringOrNull(@NotNull final String path) {
-        return handle.getStringOrNull(path);
     }
 
     @Override
     public @Nullable String getStringOrNull(@NotNull final String path,
-                                            final boolean format) {
+                                            final boolean format,
-        return handle.getStringOrNull(path, format);
+                                            @NotNull final StringUtils.FormatOption option) {
-    }
+        return handle.getStringOrNull(path, format, option);
-
-    @Override
-    public @NotNull List<String> getStrings(@NotNull final String path) {
-        return handle.getStrings(path);
     }
 
     @Override
     public @NotNull List<String> getStrings(@NotNull final String path,
-                                            final boolean format) {
+                                            final boolean format,
-        return handle.getStrings(path, format);
+                                            @NotNull final StringUtils.FormatOption option) {
-    }
+        return handle.getStrings(path, format, option);
-
-    @Override
-    public @Nullable List<String> getStringsOrNull(@NotNull final String path) {
-        return handle.getStringsOrNull(path);
     }
 
     @Override
     public @Nullable List<String> getStringsOrNull(@NotNull final String path,
-                                                   final boolean format) {
+                                                   final boolean format,
-        return handle.getStringsOrNull(path, format);
+                                                   @NotNull final StringUtils.FormatOption option) {
+        return handle.getStringsOrNull(path, format, option);
     }
 
     @Override
@@ -193,4 +177,13 @@ public abstract class ConfigWrapper<T extends Config> implements Config {
     public Config clone() {
         return handle.clone();
     }
+
+    /**
+     * Get the handle.
+     *
+     * @return The handle.
+     */
+    public T getHandle() {
+        return this.handle;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/yaml/YamlBaseConfig.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.config.yaml;
 
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
 import com.willfp.eco.core.config.yaml.wrapper.LoadableYamlConfigWrapper;
 import org.jetbrains.annotations.NotNull;
 
@@ -19,7 +20,7 @@ public abstract class YamlBaseConfig extends LoadableYamlConfigWrapper {
      */
     protected YamlBaseConfig(@NotNull final String configName,
                              final boolean removeUnused,
-                             @NotNull final EcoPlugin plugin,
+                             @NotNull final PluginLike plugin,
                              @NotNull final String... updateBlacklist) {
         super(
                 Eco.getHandler().getConfigFactory().createUpdatableYamlConfig(
@@ -39,7 +40,7 @@ public abstract class YamlBaseConfig extends LoadableYamlConfigWrapper {
      */
     protected YamlBaseConfig(@NotNull final String configName,
                              final boolean removeUnused,
-                             @NotNull final EcoPlugin plugin) {
+                             @NotNull final PluginLike plugin) {
         super(
                 Eco.getHandler().getConfigFactory().createUpdatableYamlConfig(
                         configName,
@@ -50,4 +51,28 @@ public abstract class YamlBaseConfig extends LoadableYamlConfigWrapper {
                 )
         );
     }
+
+    /**
+     * @param configName      The name of the config
+     * @param removeUnused    Whether keys not present in the default config should be removed on update.
+     * @param plugin          The plugin.
+     * @param updateBlacklist Substring of keys to not add/remove keys for.
+     */
+    protected YamlBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final EcoPlugin plugin,
+                             @NotNull final String... updateBlacklist) {
+        this(configName, removeUnused, (PluginLike) plugin, updateBlacklist);
+    }
+
+    /**
+     * @param configName   The name of the config
+     * @param removeUnused Whether keys not present in the default config should be removed on update.
+     * @param plugin       The plugin.
+     */
+    protected YamlBaseConfig(@NotNull final String configName,
+                             final boolean removeUnused,
+                             @NotNull final EcoPlugin plugin) {
+        this(configName, removeUnused, (PluginLike) plugin);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/yaml/YamlExtendableConfig.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.config.yaml;
 
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
 import com.willfp.eco.core.config.yaml.wrapper.LoadableYamlConfigWrapper;
 import org.jetbrains.annotations.NotNull;
 
@@ -25,7 +26,7 @@ public abstract class YamlExtendableConfig extends LoadableYamlConfigWrapper {
      */
     protected YamlExtendableConfig(@NotNull final String configName,
                                    final boolean removeUnused,
-                                   @NotNull final EcoPlugin plugin,
+                                   @NotNull final PluginLike plugin,
                                    @NotNull final Class<?> source,
                                    @NotNull final String subDirectoryPath,
                                    @NotNull final String... updateBlacklist) {
@@ -40,4 +41,20 @@ public abstract class YamlExtendableConfig extends LoadableYamlConfigWrapper {
                 )
         );
     }
+    /**
+     * @param configName       The name of the config
+     * @param removeUnused     Whether keys not present in the default config should be removed on update.
+     * @param plugin           The plugin.
+     * @param updateBlacklist  Substring of keys to not add/remove keys for.
+     * @param subDirectoryPath The subdirectory path.
+     * @param source           The class that owns the resource.
+     */
+    protected YamlExtendableConfig(@NotNull final String configName,
+                                   final boolean removeUnused,
+                                   @NotNull final EcoPlugin plugin,
+                                   @NotNull final Class<?> source,
+                                   @NotNull final String subDirectoryPath,
+                                   @NotNull final String... updateBlacklist) {
+        this(configName, removeUnused, (PluginLike) plugin, source, subDirectoryPath, updateBlacklist);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/yaml/YamlStaticBaseConfig.java

@@ -2,6 +2,7 @@ package com.willfp.eco.core.config.yaml;
 
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
+import com.willfp.eco.core.PluginLike;
 import com.willfp.eco.core.config.yaml.wrapper.LoadableYamlConfigWrapper;
 import org.jetbrains.annotations.NotNull;
 
@@ -18,7 +19,20 @@ public abstract class YamlStaticBaseConfig extends LoadableYamlConfigWrapper {
      * @param plugin     The plugin.
      */
     protected YamlStaticBaseConfig(@NotNull final String configName,
-                                   @NotNull final EcoPlugin plugin) {
+                                   @NotNull final PluginLike plugin) {
         super(Eco.getHandler().getConfigFactory().createLoadableYamlConfig(configName, plugin, "", plugin.getClass()));
     }
+
+    /**
+     * Config implementation for configs present in the plugin's base directory (eg config.yml, lang.yml).
+     * <p>
+     * Does not automatically update.
+     *
+     * @param configName The name of the config
+     * @param plugin     The plugin.
+     */
+    protected YamlStaticBaseConfig(@NotNull final String configName,
+                                   @NotNull final EcoPlugin plugin) {
+        this(configName, (PluginLike) plugin);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/config/yaml/wrapper/YamlConfigWrapper.java

@@ -19,7 +19,6 @@ public abstract class YamlConfigWrapper extends ConfigWrapper<Config> implements
         super(handle);
     }
 
-
     @Override
     public YamlConfiguration getBukkitHandle() {
         return ((WrappedYamlConfiguration) this.getHandle()).getBukkitHandle();

eco-api/src/main/java/com/willfp/eco/core/data/PlayerProfile.java

@@ -0,0 +1,56 @@
+package com.willfp.eco.core.data;
+
+import com.willfp.eco.core.Eco;
+import com.willfp.eco.core.data.keys.PersistentDataKey;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.UUID;
+
+/**
+ * Persistent data storage interface for players.
+ * <p>
+ * Profiles save automatically, so there is no need to save after changes.
+ */
+public interface PlayerProfile {
+    /**
+     * Write a key to a player's persistent data.
+     *
+     * @param key   The key.
+     * @param value The value.
+     * @param <T>   The type of the key.
+     */
+    <T> void write(@NotNull PersistentDataKey<T> key,
+                   @NotNull T value);
+
+    /**
+     * Read a key from a player's persistent data.
+     *
+     * @param key The key.
+     * @param <T> The type of the key.
+     * @return The value, or the default value if not found.
+     */
+    <T> @NotNull T read(@NotNull PersistentDataKey<T> key);
+
+    /**
+     * Load a player profile.
+     *
+     * @param player The player.
+     * @return The profile.
+     */
+    @NotNull
+    static PlayerProfile load(@NotNull final OfflinePlayer player) {
+        return load(player.getUniqueId());
+    }
+
+    /**
+     * Load a player profile.
+     *
+     * @param uuid The player's UUID.
+     * @return The profile.
+     */
+    @NotNull
+    static PlayerProfile load(@NotNull final UUID uuid) {
+        return Eco.getHandler().getPlayerProfileHandler().load(uuid);
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/data/PlayerProfileHandler.java

@@ -0,0 +1,41 @@
+package com.willfp.eco.core.data;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.UUID;
+
+/**
+ * API to handle player profiles.
+ */
+public interface PlayerProfileHandler {
+    /**
+     * Load a player profile.
+     *
+     * @param uuid The UUID.
+     * @return The profile.
+     */
+    PlayerProfile load(@NotNull UUID uuid);
+
+    /**
+     * Save a player profile.
+     *
+     * @param uuid The uuid.
+     */
+    void savePlayer(@NotNull UUID uuid);
+
+    /**
+     * Save all player data.
+     *
+     * @param async If the saving should be done asynchronously.
+     * @deprecated async is now handled automatically depending on implementation.
+     */
+    @Deprecated
+    default void saveAll(boolean async) {
+        saveAll();
+    }
+
+    /**
+     * Save all player data.
+     */
+    void saveAll();
+}

eco-api/src/main/java/com/willfp/eco/core/data/keys/KeyRegistry.java

@@ -0,0 +1,24 @@
+package com.willfp.eco.core.data.keys;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Set;
+
+/**
+ * API to register persistent data keys.
+ */
+public interface KeyRegistry {
+    /**
+     * Register a persistent data key to be stored.
+     *
+     * @param key The key.
+     */
+    void registerKey(@NotNull PersistentDataKey<?> key);
+
+    /**
+     * Get all registered keys.
+     *
+     * @return The keys.
+     */
+    Set<PersistentDataKey<?>> getRegisteredKeys();
+}

eco-api/src/main/java/com/willfp/eco/core/data/keys/PersistentDataKey.java

@@ -0,0 +1,91 @@
+package com.willfp.eco.core.data.keys;
+
+import com.willfp.eco.core.Eco;
+import org.bukkit.NamespacedKey;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.Set;
+
+/**
+ * A persistent data key is a key with a type that can be stored about an offline player.
+ *
+ * @param <T> The type of the data.
+ */
+public class PersistentDataKey<T> {
+    /**
+     * The key of the persistent data value.
+     */
+    private final NamespacedKey key;
+
+    /**
+     * The default value for the key.
+     */
+    private final T defaultValue;
+
+    /**
+     * The persistent data key type.
+     */
+    private final PersistentDataKeyType type;
+
+    /**
+     * Create a new Persistent Data Key.
+     *
+     * @param key          The key.
+     * @param type         The data type.
+     * @param defaultValue The default value.
+     */
+    public PersistentDataKey(@NotNull final NamespacedKey key,
+                             @NotNull final PersistentDataKeyType type,
+                             @NotNull final T defaultValue) {
+        this.key = key;
+        this.defaultValue = defaultValue;
+        this.type = type;
+
+        Eco.getHandler().getKeyRegistry().registerKey(this);
+    }
+
+    @Override
+    public String toString() {
+        return "PersistentDataKey{"
+                + "key=" + key
+                + ", defaultValue=" + defaultValue
+                + ", type=" + type
+                + '}';
+    }
+
+    /**
+     * Get all persistent data keys.
+     *
+     * @return The keys.
+     */
+    public static Set<PersistentDataKey<?>> values() {
+        return Eco.getHandler().getKeyRegistry().getRegisteredKeys();
+    }
+
+    /**
+     * Get the key.
+     *
+     * @return The key.
+     */
+    public NamespacedKey getKey() {
+        return this.key;
+    }
+
+    /**
+     * Get the default value.
+     *
+     * @return The default value.
+     */
+    public T getDefaultValue() {
+        return this.defaultValue;
+    }
+
+    /**
+     * Get the data key type.
+     *
+     * @return The key type.
+     */
+    public PersistentDataKeyType getType() {
+        return this.type;
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/data/keys/PersistentDataKeyType.java

@@ -0,0 +1,26 @@
+package com.willfp.eco.core.data.keys;
+
+/**
+ * All storable data key types.
+ */
+public enum PersistentDataKeyType {
+    /**
+     * String.
+     */
+    STRING,
+
+    /**
+     * Boolean.
+     */
+    BOOLEAN,
+
+    /**
+     * Integer.
+     */
+    INT,
+
+    /**
+     * Double.
+     */
+    DOUBLE
+}

eco-api/src/main/java/com/willfp/eco/core/display/Display.java

@@ -1,54 +1,24 @@
 package com.willfp.eco.core.display;
 
-import lombok.experimental.UtilityClass;
+import org.bukkit.entity.Player;
-import org.apache.commons.lang.Validate;
-import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.meta.ItemMeta;
-import org.bukkit.persistence.PersistentDataContainer;
-import org.bukkit.persistence.PersistentDataType;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
-
+import org.jetbrains.annotations.Nullable;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
 
 /**
  * Utility class to manage client-side item display.
  */
-@UtilityClass
+public final class Display {
-public class Display {
     /**
      * The prefix for client-side lore lines.
      */
     public static final String PREFIX = "§z";
 
     /**
-     * All registered display modules.
+     * The display handler.
      */
-    private static final Map<DisplayPriority, List<DisplayModule>> MODULES = new HashMap<>();
+    private static DisplayHandler handler = null;
-
-    /**
-     * NamespacedKey for finalizing.
-     */
-    private static NamespacedKey finalizeKey = null;
-
-    /**
-     * Register display module.
-     *
-     * @param module The module.
-     */
-    public void registerDisplayModule(@NotNull final DisplayModule module) {
-        List<DisplayModule> modules = MODULES.get(module.getPriority());
-
-        modules.removeIf(module1 -> module1.getPluginName().equalsIgnoreCase(module.getPluginName()));
-
-        modules.add(module);
-
-        MODULES.put(module.getPriority(), modules);
-    }
 
     /**
      * Display on ItemStacks.
@@ -56,37 +26,20 @@ public class Display {
      * @param itemStack The item.
      * @return The ItemStack.
      */
-    public ItemStack display(@NotNull final ItemStack itemStack) {
+    public static ItemStack display(@NotNull final ItemStack itemStack) {
-        if (!itemStack.hasItemMeta()) {
+        return display(itemStack, null);
-            return itemStack; // return early if there's no customization of the item
+    }
-        }
 
-        Map<String, Object[]> pluginVarArgs = new HashMap<>();
+    /**
-
+     * Display on ItemStacks.
-        for (DisplayPriority priority : DisplayPriority.values()) {
+     *
-            List<DisplayModule> modules = MODULES.get(priority);
+     * @param itemStack The item.
-            for (DisplayModule module : modules) {
+     * @param player    The player.
-                pluginVarArgs.put(module.getPluginName(), module.generateVarArgs(itemStack));
+     * @return The ItemStack.
-            }
+     */
-        }
+    public static ItemStack display(@NotNull final ItemStack itemStack,
-
+                                    @Nullable final Player player) {
-        revert(itemStack);
+        return handler.display(itemStack, player);
-
-        ItemMeta meta = itemStack.getItemMeta();
-
-        if (meta == null) {
-            return itemStack;
-        }
-
-        for (DisplayPriority priority : DisplayPriority.values()) {
-            List<DisplayModule> modules = MODULES.get(priority);
-            for (DisplayModule module : modules) {
-                Object[] varargs = pluginVarArgs.get(module.getPluginName());
-                module.display(itemStack, varargs);
-            }
-        }
-
-        return itemStack;
     }
 
     /**
@@ -95,8 +48,20 @@ public class Display {
      * @param itemStack The item.
      * @return The ItemStack.
      */
-    public ItemStack displayAndFinalize(@NotNull final ItemStack itemStack) {
+    public static ItemStack displayAndFinalize(@NotNull final ItemStack itemStack) {
-        return finalize(display(itemStack));
+        return finalize(display(itemStack, null));
+    }
+
+    /**
+     * Display on ItemStacks and then finalize.
+     *
+     * @param itemStack The item.
+     * @param player    The player.
+     * @return The ItemStack.
+     */
+    public static ItemStack displayAndFinalize(@NotNull final ItemStack itemStack,
+                                        @Nullable final Player player) {
+        return finalize(display(itemStack, player));
     }
 
     /**
@@ -105,36 +70,8 @@ public class Display {
      * @param itemStack The item.
      * @return The ItemStack.
      */
-    public ItemStack revert(@NotNull final ItemStack itemStack) {
+    public static ItemStack revert(@NotNull final ItemStack itemStack) {
-        if (Display.isFinalized(itemStack)) {
+        return handler.revert(itemStack);
-            unfinalize(itemStack);
-        }
-
-        if (!itemStack.hasItemMeta()) {
-            return itemStack;
-        }
-
-        ItemMeta meta = itemStack.getItemMeta();
-
-        if (meta == null) {
-            return itemStack;
-        }
-
-        List<String> lore = meta.getLore();
-
-        if (lore != null && lore.removeIf(line -> line.startsWith(Display.PREFIX))) { // only apply lore modification if needed
-            meta.setLore(lore);
-            itemStack.setItemMeta(meta);
-        }
-
-        for (DisplayPriority priority : DisplayPriority.values()) {
-            List<DisplayModule> modules = MODULES.get(priority);
-            for (DisplayModule module : modules) {
-                module.revert(itemStack);
-            }
-        }
-
-        return itemStack;
     }
 
     /**
@@ -143,22 +80,8 @@ public class Display {
      * @param itemStack The item.
      * @return The ItemStack.
      */
-    public ItemStack finalize(@NotNull final ItemStack itemStack) {
+    public static ItemStack finalize(@NotNull final ItemStack itemStack) {
-        Validate.notNull(finalizeKey, "Key cannot be null!");
+        return handler.finalize(itemStack);
-
-        if (itemStack.getType().getMaxStackSize() > 1) {
-            return itemStack;
-        }
-
-        ItemMeta meta = itemStack.getItemMeta();
-        if (meta == null) {
-            return itemStack;
-        }
-
-        PersistentDataContainer container = meta.getPersistentDataContainer();
-        container.set(finalizeKey, PersistentDataType.INTEGER, 1);
-        itemStack.setItemMeta(meta);
-        return itemStack;
     }
 
     /**
@@ -167,19 +90,8 @@ public class Display {
      * @param itemStack The item.
      * @return The ItemStack.
      */
-    public ItemStack unfinalize(@NotNull final ItemStack itemStack) {
+    public static ItemStack unfinalize(@NotNull final ItemStack itemStack) {
-        Validate.notNull(finalizeKey, "Key cannot be null!");
+        return handler.unfinalize(itemStack);
-
-        ItemMeta meta = itemStack.getItemMeta();
-
-        if (meta == null) {
-            return itemStack;
-        }
-
-        PersistentDataContainer container = meta.getPersistentDataContainer();
-        container.remove(finalizeKey);
-        itemStack.setItemMeta(meta);
-        return itemStack;
     }
 
     /**
@@ -188,32 +100,82 @@ public class Display {
      * @param itemStack The item.
      * @return If finalized.
      */
-    public boolean isFinalized(@NotNull final ItemStack itemStack) {
+    public static boolean isFinalized(@NotNull final ItemStack itemStack) {
-        Validate.notNull(finalizeKey, "Key cannot be null!");
+        return handler.isFinalized(itemStack);
-
-        ItemMeta meta = itemStack.getItemMeta();
-
-        if (meta == null) {
-            return false;
-        }
-
-        PersistentDataContainer container = meta.getPersistentDataContainer();
-        return container.has(finalizeKey, PersistentDataType.INTEGER);
     }
 
     /**
-     * Set key to be used for finalization.
+     * Register a new display module.
      *
-     * @param finalizeKey The key.
+     * @param module The module.
      */
-    @ApiStatus.Internal
+    public static void registerDisplayModule(@NotNull final DisplayModule module) {
-    public static void setFinalizeKey(@NotNull final NamespacedKey finalizeKey) {
+        handler.registerDisplayModule(module);
-        Display.finalizeKey = finalizeKey;
     }
 
-    static {
+    /**
-        for (DisplayPriority priority : DisplayPriority.values()) {
+     * Initialize the display system.
-            MODULES.put(priority, new ArrayList<>());
+     *
+     * @param handler The handler.
+     */
+    @ApiStatus.Internal
+    public static void init(@NotNull final DisplayHandler handler) {
+        if (Display.handler != null) {
+            throw new IllegalArgumentException("Already Initialized!");
+        }
+        Display.handler = handler;
+    }
+
+    /**
+     * Extremely janky method - also internal, so don't use it. <b>This method is
+     * NOT part of the API and may be removed at any time!</b>
+     * <p>
+     * This calls a display module with the specified parameters, now
+     * you might ask why I need a static java method when the DisplayHandler
+     * implementation could just call it itself? Well, kotlin doesn't really
+     * like dealing with vararg ambiguity, and so while kotlin can't figure out
+     * what is and isn't a vararg when I call display with a player, java can.
+     * <p>
+     * Because of this, I need to have this part of the code in java.
+     *
+     * <b>Don't call this method as part of your plugins!</b>
+     * <p>
+     * No, seriously - don't. This skips a bunch of checks and you'll almost
+     * definitely break something.
+     *
+     * @param module    The display module.
+     * @param itemStack The ItemStack.
+     * @param player    The player.
+     * @param args      The args.
+     */
+    @ApiStatus.Internal
+    public static void callDisplayModule(@NotNull final DisplayModule module,
+                                         @NotNull final ItemStack itemStack,
+                                         @Nullable final Player player,
+                                         @NotNull final Object... args) {
+        module.display(itemStack, args);
+        if (player != null) {
+            module.display(itemStack, player, args);
         }
     }
+
+    /**
+     * Set the display handler.
+     * <p>
+     * Internal API component, you will cause bugs if you create your own handler.
+     *
+     * @param handler The handler.
+     */
+    @ApiStatus.Internal
+    public static void setHandler(@NotNull final DisplayHandler handler) {
+        if (Display.handler != null) {
+            throw new IllegalStateException("Display already initialized!");
+        }
+
+        Display.handler = handler;
+    }
+
+    private Display() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/display/DisplayHandler.java

@@ -0,0 +1,60 @@
+package com.willfp.eco.core.display;
+
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Interface for display implementations.
+ */
+public interface DisplayHandler {
+    /**
+     * Register display module.
+     *
+     * @param module The module.
+     */
+    void registerDisplayModule(@NotNull DisplayModule module);
+
+    /**
+     * Display on ItemStacks.
+     *
+     * @param itemStack The item.
+     * @param player    The player.
+     * @return The ItemStack.
+     */
+    ItemStack display(@NotNull ItemStack itemStack,
+                      @Nullable Player player);
+
+    /**
+     * Revert on ItemStacks.
+     *
+     * @param itemStack The item.
+     * @return The ItemStack.
+     */
+    ItemStack revert(@NotNull ItemStack itemStack);
+
+    /**
+     * Finalize an ItemStacks.
+     *
+     * @param itemStack The item.
+     * @return The ItemStack.
+     */
+    ItemStack finalize(@NotNull ItemStack itemStack);
+
+    /**
+     * Unfinalize an ItemStacks.
+     *
+     * @param itemStack The item.
+     * @return The ItemStack.
+     */
+    ItemStack unfinalize(@NotNull ItemStack itemStack);
+
+    /**
+     * If an item is finalized.
+     *
+     * @param itemStack The item.
+     * @return If finalized.
+     */
+    boolean isFinalized(@NotNull ItemStack itemStack);
+}

eco-api/src/main/java/com/willfp/eco/core/display/DisplayModule.java

@@ -2,9 +2,10 @@ package com.willfp.eco.core.display;
 
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.PluginDependent;
-import lombok.Getter;
+import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Class for all plugin-specific client-side item display modules.
@@ -13,7 +14,6 @@ public abstract class DisplayModule extends PluginDependent<EcoPlugin> {
     /**
      * The priority of the module.
      */
-    @Getter
     private final DisplayPriority priority;
 
     /**
@@ -34,8 +34,21 @@ public abstract class DisplayModule extends PluginDependent<EcoPlugin> {
      * @param itemStack The item.
      * @param args      Optional args for display.
      */
-    protected void display(@NotNull final ItemStack itemStack,
+    public void display(@NotNull final ItemStack itemStack,
-                           @NotNull final Object... args) {
+                        @NotNull final Object... args) {
+        // Technically optional.
+    }
+
+    /**
+     * Display an item.
+     *
+     * @param itemStack The item.
+     * @param player    The player.
+     * @param args      Optional args for display.
+     */
+    public void display(@NotNull final ItemStack itemStack,
+                        @Nullable final Player player,
+                        @NotNull final Object... args) {
         // Technically optional.
     }
 
@@ -44,7 +57,7 @@ public abstract class DisplayModule extends PluginDependent<EcoPlugin> {
      *
      * @param itemStack The item.
      */
-    protected void revert(@NotNull final ItemStack itemStack) {
+    public void revert(@NotNull final ItemStack itemStack) {
         // Technically optional.
     }
 
@@ -54,7 +67,7 @@ public abstract class DisplayModule extends PluginDependent<EcoPlugin> {
      * @param itemStack The itemStack.
      * @return The plugin-specific varargs.
      */
-    protected Object[] generateVarArgs(@NotNull final ItemStack itemStack) {
+    public Object[] generateVarArgs(@NotNull final ItemStack itemStack) {
         return new Object[0];
     }
 
@@ -66,4 +79,13 @@ public abstract class DisplayModule extends PluginDependent<EcoPlugin> {
     public final String getPluginName() {
         return super.getPlugin().getName();
     }
+
+    /**
+     * Get the display priority.
+     *
+     * @return The priority.
+     */
+    public DisplayPriority getPriority() {
+        return this.priority;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/events/ArmorChangeEvent.java

@@ -0,0 +1,84 @@
+package com.willfp.eco.core.events;
+
+import org.bukkit.entity.Player;
+import org.bukkit.event.HandlerList;
+import org.bukkit.event.player.PlayerEvent;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * The armor change event <b>does</b> contain information about the event.
+ * <p>
+ * Unlike {@link ArmorEquipEvent}, it is called the next tick and contains previous and current armor contents.
+ */
+public class ArmorChangeEvent extends PlayerEvent {
+    /**
+     * Bukkit parity.
+     */
+    private static final HandlerList HANDLERS = new HandlerList();
+
+    /**
+     * The armor contents before. 0 is helmet, 3 is boots.
+     */
+    private final List<ItemStack> before;
+
+    /**
+     * The armor contents after. 0 is helmet, 3 is boots.
+     */
+    private final List<ItemStack> after;
+
+    /**
+     * Create a new ArmorChangeEvent.
+     *
+     * @param player The player.
+     * @param before The armor contents before.
+     * @param after  The armor contents after.
+     */
+    public ArmorChangeEvent(@NotNull final Player player,
+                            @NotNull final List<ItemStack> before,
+                            @NotNull final List<ItemStack> after) {
+        super(player);
+        this.before = before;
+        this.after = after;
+    }
+
+    /**
+     * Gets a list of handlers handling this event.
+     *
+     * @return A list of handlers handling this event.
+     */
+    @Override
+    @NotNull
+    public HandlerList getHandlers() {
+        return HANDLERS;
+    }
+
+    /**
+     * Bukkit parity.
+     *
+     * @return The handler list.
+     */
+    public static HandlerList getHandlerList() {
+        return HANDLERS;
+    }
+
+    /**
+     * Get the contents before the change.
+     *
+     * @return The contents.
+     */
+    public List<ItemStack> getBefore() {
+        return this.before;
+    }
+
+    /**
+     * Get the current contents.
+     *
+     * @return The contents.
+     */
+    public List<ItemStack> getAfter() {
+        return this.after;
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/events/ArmorEquipEvent.java

@@ -13,8 +13,13 @@ import org.jetbrains.annotations.NotNull;
  * <p>
  * The event is called before the player's inventory actually updates,
  * so you can check a tick later to see the new contents.
+ *
+ * @see ArmorChangeEvent
  */
 public class ArmorEquipEvent extends PlayerEvent {
+    /**
+     * Bukkit parity.
+     */
     private static final HandlerList HANDLERS = new HandlerList();
 
     /**

eco-api/src/main/java/com/willfp/eco/core/events/EntityDeathByEntityEvent.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.events;
 
-import lombok.Getter;
 import org.bukkit.entity.Entity;
 import org.bukkit.entity.LivingEntity;
 import org.bukkit.event.Event;
@@ -25,31 +24,26 @@ public class EntityDeathByEntityEvent extends Event {
     /**
      * The {@link LivingEntity} killed.
      */
-    @Getter
     private final LivingEntity victim;
 
     /**
      * The {@link Entity} that killed.
      */
-    @Getter
     private final Entity killer;
 
     /**
      * The associated {@link EntityDeathEvent}.
      */
-    @Getter
     private final EntityDeathEvent deathEvent;
 
     /**
      * The entity drops.
      */
-    @Getter
     private final List<ItemStack> drops;
 
     /**
      * The xp to drop.
      */
-    @Getter
     private final int xp;
 
     /**
@@ -91,4 +85,49 @@ public class EntityDeathByEntityEvent extends Event {
     public static HandlerList getHandlerList() {
         return HANDLERS;
     }
+
+    /**
+     * Get the entity killed.
+     *
+     * @return The victim.
+     */
+    public LivingEntity getVictim() {
+        return this.victim;
+    }
+
+    /**
+     * Get the killer.
+     *
+     * @return The killer.
+     */
+    public Entity getKiller() {
+        return this.killer;
+    }
+
+    /**
+     * Get the death event that caused this event.
+     *
+     * @return The death event.
+     */
+    public EntityDeathEvent getDeathEvent() {
+        return this.deathEvent;
+    }
+
+    /**
+     * Get the drops.
+     *
+     * @return The drops.
+     */
+    public List<ItemStack> getDrops() {
+        return this.drops;
+    }
+
+    /**
+     * Get the experience dropped.
+     *
+     * @return The experience.
+     */
+    public int getXp() {
+        return this.xp;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/events/NaturalExpGainEvent.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.events;
 
-import lombok.Getter;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 import org.bukkit.event.player.PlayerExpChangeEvent;
@@ -20,7 +19,6 @@ public class NaturalExpGainEvent extends Event {
      * The associated {@link PlayerExpChangeEvent}.
      * Use this to modify event parameters.
      */
-    @Getter
     private final PlayerExpChangeEvent expChangeEvent;
 
     /**
@@ -50,4 +48,13 @@ public class NaturalExpGainEvent extends Event {
     public static HandlerList getHandlerList() {
         return HANDLERS;
     }
+
+    /**
+     * Get the event that caused this event.
+     *
+     * @return The exp change event.
+     */
+    public PlayerExpChangeEvent getExpChangeEvent() {
+        return this.expChangeEvent;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/extensions/Extension.java

@@ -1,11 +1,13 @@
 package com.willfp.eco.core.extensions;
 
 import com.willfp.eco.core.EcoPlugin;
-import lombok.AccessLevel;
+import com.willfp.eco.core.PluginLike;
-import lombok.Getter;
+import com.willfp.eco.core.config.updating.ConfigHandler;
 import org.apache.commons.lang.Validate;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.File;
+
 /**
  * An extension is a separate jar file that hooks into the base plugin jar.
  * <p>
@@ -15,13 +17,12 @@ import org.jetbrains.annotations.NotNull;
  * Syntactically, extensions are very similar to plugins in their own right, except that
  * they are loaded by another plugin.
  *
- * @see <a href="https://ecoenchants.polymart.org">EcoEnchants extension examples.</a>
+ * @see <a href="https://auxilor.polymart.org">Extension examples.</a>
  */
-public abstract class Extension {
+public abstract class Extension implements PluginLike {
     /**
      * The {@link EcoPlugin} that this extension is for.
      */
-    @Getter(AccessLevel.PROTECTED)
     private final EcoPlugin plugin;
 
     /**
@@ -53,6 +54,20 @@ public abstract class Extension {
         this.onDisable();
     }
 
+    /**
+     * Method to handle after load.
+     */
+    public final void handleAfterLoad() {
+        this.onAfterLoad();
+    }
+
+    /**
+     * Method to handle plugin reloads.
+     */
+    public final void handleReload() {
+        this.onReload();
+    }
+
     /**
      * Called on enabling Extension.
      */
@@ -63,6 +78,20 @@ public abstract class Extension {
      */
     protected abstract void onDisable();
 
+    /**
+     * Called the once the base plugin is done loading.
+     */
+    protected void onAfterLoad() {
+        // Override if needed
+    }
+
+    /**
+     * Called on plugin reload.
+     */
+    protected void onReload() {
+        // Override if needed
+    }
+
     /**
      * Set the metadata of the extension.
      * <p>
@@ -103,4 +132,23 @@ public abstract class Extension {
         Validate.notNull(metadata, "Metadata cannot be null!");
         return this.metadata.version();
     }
+
+    @Override
+    public File getDataFolder() {
+        return this.plugin.getDataFolder();
+    }
+
+    @Override
+    public ConfigHandler getConfigHandler() {
+        return this.plugin.getConfigHandler();
+    }
+
+    /**
+     * Get the plugin for the extension.
+     *
+     * @return The plugin.
+     */
+    protected EcoPlugin getPlugin() {
+        return this.plugin;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/fast/FastItemStack.java

@@ -0,0 +1,113 @@
+package com.willfp.eco.core.fast;
+
+import com.willfp.eco.core.Eco;
+import org.bukkit.Material;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemFlag;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * FastItemStack contains methods to modify and read items faster than in default bukkit.
+ */
+public interface FastItemStack {
+    /**
+     * Get all enchantments on an item.
+     *
+     * @param checkStored If stored NBT should also be checked.
+     * @return A map of all enchantments.
+     */
+    Map<Enchantment, Integer> getEnchantmentsOnItem(boolean checkStored);
+
+    /**
+     * Get the level of an enchantment on an item.
+     *
+     * @param enchantment The enchantment.
+     * @param checkStored If the stored NBT should also be checked.
+     * @return The enchantment level, or 0 if not found.
+     */
+    int getLevelOnItem(@NotNull Enchantment enchantment,
+                       boolean checkStored);
+
+    /**
+     * Set the item lore.
+     *
+     * @param lore The lore.
+     */
+    void setLore(@Nullable List<String> lore);
+
+    /**
+     * Get the item lore.
+     *
+     * @return The lore.
+     */
+    List<String> getLore();
+
+
+    /**
+     * Set the rework penalty.
+     *
+     * @param cost The rework penalty to set.
+     */
+    void setRepairCost(int cost);
+
+    /**
+     * Get the rework penalty.
+     * .
+     *
+     * @return The rework penalty found on the item.
+     */
+    int getRepairCost();
+
+    /**
+     * Add ItemFlags.
+     *
+     * @param hideFlags The flags.
+     */
+    void addItemFlags(ItemFlag... hideFlags);
+
+    /**
+     * Remove ItemFlags.
+     *
+     * @param hideFlags The flags.
+     */
+    void removeItemFlags(ItemFlag... hideFlags);
+
+    /**
+     * Get the ItemFlags.
+     *
+     * @return The flags.
+     */
+    Set<ItemFlag> getItemFlags();
+
+    /**
+     * Test the item for a flag.
+     *
+     * @param flag The flag.
+     * @return If the flag is present.
+     */
+    boolean hasItemFlag(ItemFlag flag);
+
+    /**
+     * Get the Bukkit ItemStack again.
+     *
+     * @return The ItemStack.
+     */
+    ItemStack unwrap();
+
+    /**
+     * Wrap an ItemStack to create a FastItemStack.
+     *
+     * @param itemStack The ItemStack.
+     * @return The FastItemStack.
+     */
+    static FastItemStack wrap(@Nullable final ItemStack itemStack) {
+        return Eco.getHandler().createFastItemStack(Objects.requireNonNullElseGet(itemStack, () -> new ItemStack(Material.AIR)));
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/gui/GUIFactory.java

@@ -2,12 +2,10 @@ package com.willfp.eco.core.gui;
 
 import com.willfp.eco.core.gui.menu.MenuBuilder;
 import com.willfp.eco.core.gui.slot.SlotBuilder;
-import org.bukkit.entity.Player;
+import com.willfp.eco.core.gui.slot.functional.SlotProvider;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
-import java.util.function.Function;
-
 /**
  * Internal component used by {@link com.willfp.eco.core.gui.menu.Menu#builder(int)}
  * and {@link com.willfp.eco.core.gui.slot.Slot#builder(ItemStack)}.
@@ -19,7 +17,7 @@ public interface GUIFactory {
      * @param provider The provider.
      * @return The builder.
      */
-    SlotBuilder createSlotBuilder(@NotNull Function<Player, ItemStack> provider);
+    SlotBuilder createSlotBuilder(@NotNull SlotProvider provider);
 
     /**
      * Create menu builder.

eco-api/src/main/java/com/willfp/eco/core/gui/menu/CloseHandler.java

@@ -0,0 +1,19 @@
+package com.willfp.eco.core.gui.menu;
+
+import org.bukkit.event.inventory.InventoryCloseEvent;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface to run on menu close.
+ */
+@FunctionalInterface
+public interface CloseHandler {
+    /**
+     * Performs this operation on the given arguments.
+     *
+     * @param event The close event.
+     * @param menu  The menu.
+     */
+    void handle(@NotNull InventoryCloseEvent event,
+                @NotNull Menu menu);
+}

eco-api/src/main/java/com/willfp/eco/core/gui/menu/Menu.java

@@ -2,9 +2,16 @@ package com.willfp.eco.core.gui.menu;
 
 import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.gui.slot.Slot;
+import org.bukkit.NamespacedKey;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.persistence.PersistentDataType;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+import java.util.Set;
 
 /**
  * GUI version of {@link Inventory}.
@@ -44,6 +51,51 @@ public interface Menu {
      */
     Inventory open(@NotNull Player player);
 
+    /**
+     * Get captive items.
+     *
+     * @param player The player.
+     * @return The items.
+     */
+    List<ItemStack> getCaptiveItems(@NotNull Player player);
+
+    /**
+     * Write data.
+     *
+     * @param player The player.
+     * @param key    The key.
+     * @param type   The type.
+     * @param value  The value.
+     * @param <T>    The type.
+     * @param <Z>    The type.
+     */
+    <T, Z> void writeData(@NotNull Player player,
+                          @NotNull NamespacedKey key,
+                          @NotNull PersistentDataType<T, Z> type,
+                          @NotNull Z value);
+
+    /**
+     * Read data.
+     *
+     * @param player The player.
+     * @param key    The key.
+     * @param type   The type.
+     * @param <T>    The type.
+     * @param <Z>    The type.
+     * @return The data.
+     */
+    @Nullable <T, Z> T readData(@NotNull Player player,
+                                @NotNull NamespacedKey key,
+                                @NotNull PersistentDataType<T, Z> type);
+
+    /**
+     * Get all data keys for a player.
+     *
+     * @param player The player.
+     * @return The keys.
+     */
+    Set<NamespacedKey> getKeys(@NotNull Player player);
+
     /**
      * Create a builder with a given amount of rows.
      *

eco-api/src/main/java/com/willfp/eco/core/gui/menu/MenuBuilder.java

@@ -31,6 +31,14 @@ public interface MenuBuilder {
                         int column,
                         @NotNull Slot slot);
 
+    /**
+     * Run function to modify the builder.
+     *
+     * @param modifier The modifier.
+     * @return The builder.
+     */
+    MenuBuilder modfiy(@NotNull Consumer<MenuBuilder> modifier);
+
     /**
      * Set the menu mask.
      *
@@ -45,7 +53,18 @@ public interface MenuBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    MenuBuilder onClose(@NotNull Consumer<InventoryCloseEvent> action);
+    default MenuBuilder onClose(@NotNull Consumer<InventoryCloseEvent> action) {
+        onClose((event, menu) -> action.accept(event));
+        return this;
+    }
+
+    /**
+     * Set the menu close handler.
+     *
+     * @param action The handler.
+     * @return The builder.
+     */
+    MenuBuilder onClose(@NotNull CloseHandler action);
 
     /**
      * Build the menu.

eco-api/src/main/java/com/willfp/eco/core/gui/slot/FillerMask.java

@@ -2,11 +2,11 @@ package com.willfp.eco.core.gui.slot;
 
 import com.willfp.eco.core.items.builder.ItemStackBuilder;
 import com.willfp.eco.util.ListUtils;
-import lombok.Getter;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -28,7 +28,6 @@ public class FillerMask {
     /**
      * Mask.
      */
-    @Getter
     private final List<List<Slot>> mask;
 
     /**
@@ -39,35 +38,55 @@ public class FillerMask {
      */
     public FillerMask(@NotNull final Material material,
                       @NotNull final String... pattern) {
-        if (material == Material.AIR) {
+        this(new MaskMaterials(material), pattern);
-            throw new IllegalArgumentException("Material cannot be air!");
+    }
+
+    /**
+     * Create a new filler mask.
+     *
+     * @param materials The mask materials.
+     * @param pattern   The pattern.
+     */
+    public FillerMask(@NotNull final MaskMaterials materials,
+                      @NotNull final String... pattern) {
+        if (Arrays.stream(materials.materials()).anyMatch(material -> material == Material.AIR)) {
+            throw new IllegalArgumentException("Materials cannot be air!");
         }
 
         mask = ListUtils.create2DList(6, 9);
 
-        ItemStack itemStack = new ItemStackBuilder(material)
+        for (int i = 0; i < materials.materials().length; i++) {
-                .setDisplayName("&r")
+            ItemStack itemStack = new ItemStackBuilder(materials.materials()[i])
-                .build();
+                    .setDisplayName("&r")
+                    .build();
 
-        int row = 0;
+            int row = 0;
 
-        for (String patternRow : pattern) {
+            for (String patternRow : pattern) {
-            int column = 0;
+                int column = 0;
-            if (patternRow.length() != 9) {
+                if (patternRow.length() != 9) {
-                throw new IllegalArgumentException("Invalid amount of columns in pattern!");
+                    throw new IllegalArgumentException("Invalid amount of columns in pattern!");
-            }
-            for (char c : patternRow.toCharArray()) {
-                if (c == '0') {
-                    mask.get(row).set(column, null);
-                } else if (c == '1') {
-                    mask.get(row).set(column, new FillerSlot(itemStack));
-                } else {
-                    throw new IllegalArgumentException("Invalid character in pattern! (Must only be 0 and 1)");
                 }
+                for (char c : patternRow.toCharArray()) {
+                    if (c == '0') {
+                        mask.get(row).set(column, null);
+                    } else if (c == Character.forDigit(i + 1, 10)) {
+                        mask.get(row).set(column, new FillerSlot(itemStack));
+                    }
 
-                column++;
+                    column++;
+                }
+                row++;
             }
-            row++;
         }
     }
+
+    /**
+     * Get the mask.
+     *
+     * @return The mask.
+     */
+    public List<List<Slot>> getMask() {
+        return this.mask;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/gui/slot/FillerSlot.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.gui.slot;
 
-import lombok.Getter;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -14,7 +13,6 @@ public class FillerSlot implements Slot {
     /**
      * The ItemStack.
      */
-    @Getter
     private final ItemStack itemStack;
 
     /**
@@ -30,4 +28,18 @@ public class FillerSlot implements Slot {
     public ItemStack getItemStack(@NotNull final Player player) {
         return itemStack;
     }
+
+    @Override
+    public boolean isCaptive() {
+        return false;
+    }
+
+    /**
+     * Get the ItemStack.
+     *
+     * @return The ItemStack.
+     */
+    public ItemStack getItemStack() {
+        return this.itemStack;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/gui/slot/MaskMaterials.java

@@ -0,0 +1,14 @@
+package com.willfp.eco.core.gui.slot;
+
+import org.bukkit.Material;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Mask materials store a set of materials which can be accessed by
+ * a filler mask.
+ *
+ * @param materials The materials.
+ */
+public record MaskMaterials(@NotNull Material... materials) {
+
+}

eco-api/src/main/java/com/willfp/eco/core/gui/slot/Slot.java

@@ -1,6 +1,8 @@
 package com.willfp.eco.core.gui.slot;
 
 import com.willfp.eco.core.Eco;
+import com.willfp.eco.core.gui.slot.functional.SlotProvider;
+import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -19,6 +21,22 @@ public interface Slot {
      */
     ItemStack getItemStack(@NotNull Player player);
 
+    /**
+     * If the slot is captive. (Can items be placed in it).
+     *
+     * @return If captive.
+     */
+    boolean isCaptive();
+
+    /**
+     * Create a builder for an ItemStack.
+     *
+     * @return The builder.
+     */
+    static SlotBuilder builder() {
+        return Eco.getHandler().getGUIFactory().createSlotBuilder((player, menu) -> new ItemStack(Material.AIR));
+    }
+
     /**
      * Create a builder for an ItemStack.
      *
@@ -26,7 +44,7 @@ public interface Slot {
      * @return The builder.
      */
     static SlotBuilder builder(@NotNull final ItemStack itemStack) {
-        return Eco.getHandler().getGUIFactory().createSlotBuilder(player -> itemStack);
+        return Eco.getHandler().getGUIFactory().createSlotBuilder((player, menu) -> itemStack);
     }
 
     /**
@@ -36,6 +54,16 @@ public interface Slot {
      * @return The builder.
      */
     static SlotBuilder builder(@NotNull final Function<Player, ItemStack> provider) {
+        return Eco.getHandler().getGUIFactory().createSlotBuilder((player, menu) -> provider.apply(player));
+    }
+
+    /**
+     * Create a builder for a player-specific ItemStack.
+     *
+     * @param provider The provider.
+     * @return The builder.
+     */
+    static SlotBuilder builder(@NotNull final SlotProvider provider) {
         return Eco.getHandler().getGUIFactory().createSlotBuilder(provider);
     }
 }

eco-api/src/main/java/com/willfp/eco/core/gui/slot/SlotBuilder.java

@@ -1,5 +1,7 @@
 package com.willfp.eco.core.gui.slot;
 
+import com.willfp.eco.core.gui.slot.functional.SlotHandler;
+import com.willfp.eco.core.gui.slot.functional.SlotModifier;
 import org.bukkit.event.inventory.InventoryClickEvent;
 import org.jetbrains.annotations.NotNull;
 
@@ -15,7 +17,17 @@ public interface SlotBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    SlotBuilder onLeftClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action);
+    default SlotBuilder onLeftClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action) {
+        return onLeftClick((event, slot, menu) -> action.accept(event, slot));
+    }
+
+    /**
+     * Set click handler.
+     *
+     * @param handler The handler.
+     * @return The builder.
+     */
+    SlotBuilder onLeftClick(@NotNull SlotHandler handler);
 
     /**
      * Set click handler.
@@ -23,7 +35,17 @@ public interface SlotBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    SlotBuilder onRightClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action);
+    default SlotBuilder onRightClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action) {
+        return onRightClick((event, slot, menu) -> action.accept(event, slot));
+    }
+
+    /**
+     * Set click handler.
+     *
+     * @param handler The handler.
+     * @return The builder.
+     */
+    SlotBuilder onRightClick(@NotNull SlotHandler handler);
 
     /**
      * Set click handler.
@@ -31,7 +53,17 @@ public interface SlotBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    SlotBuilder onShiftLeftClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action);
+    default SlotBuilder onShiftLeftClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action) {
+        return onShiftLeftClick((event, slot, menu) -> action.accept(event, slot));
+    }
+
+    /**
+     * Set click handler.
+     *
+     * @param handler The handler.
+     * @return The builder.
+     */
+    SlotBuilder onShiftLeftClick(@NotNull SlotHandler handler);
 
     /**
      * Set click handler.
@@ -39,7 +71,17 @@ public interface SlotBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    SlotBuilder onShiftRightClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action);
+    default SlotBuilder onShiftRightClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action) {
+        return onShiftRightClick((event, slot, menu) -> action.accept(event, slot));
+    }
+
+    /**
+     * Set click handler.
+     *
+     * @param handler The handler.
+     * @return The builder.
+     */
+    SlotBuilder onShiftRightClick(@NotNull SlotHandler handler);
 
     /**
      * Set click handler.
@@ -47,7 +89,32 @@ public interface SlotBuilder {
      * @param action The handler.
      * @return The builder.
      */
-    SlotBuilder onMiddleClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action);
+    default SlotBuilder onMiddleClick(@NotNull BiConsumer<InventoryClickEvent, Slot> action) {
+        return onMiddleClick((event, slot, menu) -> action.accept(event, slot));
+    }
+
+    /**
+     * Set click handler.
+     *
+     * @param handler The handler.
+     * @return The builder.
+     */
+    SlotBuilder onMiddleClick(@NotNull SlotHandler handler);
+
+    /**
+     * Modify the ItemStack.
+     *
+     * @param modifier The modifier.
+     * @return The builder.
+     */
+    SlotBuilder setModifier(@NotNull SlotModifier modifier);
+
+    /**
+     * Set slot to be a captive slot.
+     *
+     * @return The builder.
+     */
+    SlotBuilder setCaptive();
 
     /**
      * Build the slot.

eco-api/src/main/java/com/willfp/eco/core/gui/slot/functional/SlotHandler.java

@@ -0,0 +1,23 @@
+package com.willfp.eco.core.gui.slot.functional;
+
+import com.willfp.eco.core.gui.menu.Menu;
+import com.willfp.eco.core.gui.slot.Slot;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface to run on slot click.
+ */
+@FunctionalInterface
+public interface SlotHandler {
+    /**
+     * Performs this operation on the given arguments.
+     *
+     * @param event The click event.
+     * @param slot  The slot
+     * @param menu  The menu.
+     */
+    void handle(@NotNull InventoryClickEvent event,
+                @NotNull Slot slot,
+                @NotNull Menu menu);
+}

eco-api/src/main/java/com/willfp/eco/core/gui/slot/functional/SlotModifier.java

@@ -0,0 +1,23 @@
+package com.willfp.eco.core.gui.slot.functional;
+
+import com.willfp.eco.core.gui.menu.Menu;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface to run on slot modify.
+ */
+@FunctionalInterface
+public interface SlotModifier {
+    /**
+     * Performs this operation on the given arguments.
+     *
+     * @param player   The player.
+     * @param menu     The menu.
+     * @param previous The previous ItemStack.
+     */
+    void modify(@NotNull Player player,
+                @NotNull Menu menu,
+                @NotNull ItemStack previous);
+}

eco-api/src/main/java/com/willfp/eco/core/gui/slot/functional/SlotProvider.java

@@ -0,0 +1,22 @@
+package com.willfp.eco.core.gui.slot.functional;
+
+import com.willfp.eco.core.gui.menu.Menu;
+import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface to run on slot display.
+ */
+@FunctionalInterface
+public interface SlotProvider {
+    /**
+     * Performs this operation on the given arguments.
+     *
+     * @param player The player.
+     * @param menu   The menu.
+     * @return The ItemStack.
+     */
+    ItemStack provide(@NotNull Player player,
+                      @NotNull Menu menu);
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/IntegrationLoader.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.integrations;
 
-import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -17,7 +16,6 @@ public class IntegrationLoader {
     /**
      * The plugin to require to load the integration.
      */
-    @Getter
     private final String pluginName;
 
     /**
@@ -38,4 +36,13 @@ public class IntegrationLoader {
     public void load() {
         runnable.run();
     }
+
+    /**
+     * Get the plugin name.
+     *
+     * @return The plugin name.
+     */
+    public String getPluginName() {
+        return this.pluginName;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/afk/AFKManager.java

@@ -0,0 +1,46 @@
+package com.willfp.eco.core.integrations.afk;
+
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Class to handle afk integrations.
+ */
+public final class AFKManager {
+    /**
+     * A set of all registered integrations.
+     */
+    private static final Set<AFKWrapper> REGISTERED = new HashSet<>();
+
+    /**
+     * Register a new integration.
+     *
+     * @param integration The integration to register.
+     */
+    public static void register(@NotNull final AFKWrapper integration) {
+        REGISTERED.add(integration);
+    }
+
+    /**
+     * Get if a player is afk.
+     *
+     * @param player The player.
+     * @return If afk.
+     */
+    public static boolean isAfk(@NotNull final Player player) {
+        for (AFKWrapper afkWrapper : REGISTERED) {
+            if (afkWrapper.isAfk(player)) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private AFKManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/afk/AFKWrapper.java

@@ -0,0 +1,18 @@
+package com.willfp.eco.core.integrations.afk;
+
+import com.willfp.eco.core.integrations.Integration;
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Wrapper class for afk integrations.
+ */
+public interface AFKWrapper extends Integration {
+    /**
+     * Get if a player is afk.
+     *
+     * @param player The player.
+     * @return If afk.
+     */
+    boolean isAfk(@NotNull Player player);
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/anticheat/AnticheatManager.java

@@ -1,7 +1,6 @@
 package com.willfp.eco.core.integrations.anticheat;
 
 import com.willfp.eco.core.EcoPlugin;
-import lombok.experimental.UtilityClass;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Listener;
 import org.jetbrains.annotations.NotNull;
@@ -12,12 +11,11 @@ import java.util.Set;
 /**
  * Class to handle anticheat integrations.
  */
-@UtilityClass
+public final class AnticheatManager {
-public class AnticheatManager {
     /**
      * A set of all registered anticheats.
      */
-    private final Set<AnticheatWrapper> anticheats = new HashSet<>();
+    private static final Set<AnticheatWrapper> ANTICHEATS = new HashSet<>();
 
     /**
      * Register a new anticheat.
@@ -25,12 +23,12 @@ public class AnticheatManager {
      * @param plugin    The plugin.
      * @param anticheat The anticheat to register.
      */
-    public void register(@NotNull final EcoPlugin plugin,
+    public static void register(@NotNull final EcoPlugin plugin,
                          @NotNull final AnticheatWrapper anticheat) {
         if (anticheat instanceof Listener) {
             plugin.getEventManager().registerListener((Listener) anticheat);
         }
-        anticheats.add(anticheat);
+        ANTICHEATS.add(anticheat);
     }
 
     /**
@@ -38,8 +36,8 @@ public class AnticheatManager {
      *
      * @param player The player to exempt.
      */
-    public void exemptPlayer(@NotNull final Player player) {
+    public static void exemptPlayer(@NotNull final Player player) {
-        anticheats.forEach(anticheat -> anticheat.exempt(player));
+        ANTICHEATS.forEach(anticheat -> anticheat.exempt(player));
     }
 
     /**
@@ -48,7 +46,11 @@ public class AnticheatManager {
      *
      * @param player The player to remove the exemption.
      */
-    public void unexemptPlayer(@NotNull final Player player) {
+    public static void unexemptPlayer(@NotNull final Player player) {
-        anticheats.forEach(anticheat -> anticheat.unexempt(player));
+        ANTICHEATS.forEach(anticheat -> anticheat.unexempt(player));
+    }
+
+    private AnticheatManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/antigrief/AntigriefManager.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.integrations.antigrief;
 
-import lombok.experimental.UtilityClass;
 import org.bukkit.Location;
 import org.bukkit.block.Block;
 import org.bukkit.entity.LivingEntity;
@@ -13,20 +12,29 @@ import java.util.Set;
 /**
  * Class to handle antigrief integrations.
  */
-@UtilityClass
+public final class AntigriefManager {
-public class AntigriefManager {
     /**
      * Registered antigriefs.
      */
-    private final Set<AntigriefWrapper> registered = new HashSet<>();
+    private static final Set<AntigriefWrapper> REGISTERED = new HashSet<>();
 
     /**
      * Register a new AntiGrief/Land Management integration.
      *
      * @param antigrief The integration to register.
      */
-    public void register(@NotNull final AntigriefWrapper antigrief) {
+    public static void register(@NotNull final AntigriefWrapper antigrief) {
-        registered.add(antigrief);
+        REGISTERED.add(antigrief);
+    }
+
+    /**
+     * Unregister an AntiGrief/Land Management integration.
+     *
+     * @param antigrief The integration to unregister.
+     */
+    public static void unregister(@NotNull final AntigriefWrapper antigrief) {
+        REGISTERED.removeIf(it -> it.getPluginName().equalsIgnoreCase(antigrief.getPluginName()));
+        REGISTERED.remove(antigrief);
     }
 
     /**
@@ -36,9 +44,9 @@ public class AntigriefManager {
      * @param block  The block.
      * @return If player can break block.
      */
-    public boolean canBreakBlock(@NotNull final Player player,
+    public static boolean canBreakBlock(@NotNull final Player player,
                                  @NotNull final Block block) {
-        return registered.stream().allMatch(antigriefWrapper -> antigriefWrapper.canBreakBlock(player, block));
+        return REGISTERED.stream().allMatch(antigriefWrapper -> antigriefWrapper.canBreakBlock(player, block));
     }
 
     /**
@@ -48,9 +56,9 @@ public class AntigriefManager {
      * @param location The location.
      * @return If player can create explosion.
      */
-    public boolean canCreateExplosion(@NotNull final Player player,
+    public static boolean canCreateExplosion(@NotNull final Player player,
                                       @NotNull final Location location) {
-        return registered.stream().allMatch(antigriefWrapper -> antigriefWrapper.canCreateExplosion(player, location));
+        return REGISTERED.stream().allMatch(antigriefWrapper -> antigriefWrapper.canCreateExplosion(player, location));
     }
 
     /**
@@ -60,9 +68,9 @@ public class AntigriefManager {
      * @param block  The block.
      * @return If player can place block.
      */
-    public boolean canPlaceBlock(@NotNull final Player player,
+    public static boolean canPlaceBlock(@NotNull final Player player,
                                  @NotNull final Block block) {
-        return registered.stream().allMatch(antigriefWrapper -> antigriefWrapper.canPlaceBlock(player, block));
+        return REGISTERED.stream().allMatch(antigriefWrapper -> antigriefWrapper.canPlaceBlock(player, block));
     }
 
     /**
@@ -72,8 +80,12 @@ public class AntigriefManager {
      * @param victim The victim.
      * @return If player can injure.
      */
-    public boolean canInjure(@NotNull final Player player,
+    public static boolean canInjure(@NotNull final Player player,
                              @NotNull final LivingEntity victim) {
-        return registered.stream().allMatch(antigriefWrapper -> antigriefWrapper.canInjure(player, victim));
+        return REGISTERED.stream().allMatch(antigriefWrapper -> antigriefWrapper.canInjure(player, victim));
+    }
+
+    private AntigriefManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/antigrief/AntigriefWrapper.java

@@ -15,7 +15,7 @@ public interface AntigriefWrapper extends Integration {
      *
      * @param player The player.
      * @param block  The block.
-     * @return If player cna break block.
+     * @return If player can break block.
      */
     boolean canBreakBlock(Player player, Block block);
 

eco-api/src/main/java/com/willfp/eco/core/integrations/customitems/CustomItemsManager.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.integrations.customitems;
 
-import lombok.experimental.UtilityClass;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.HashSet;
@@ -9,20 +8,19 @@ import java.util.Set;
 /**
  * Class to handle custom item integrations.
  */
-@UtilityClass
+public final class CustomItemsManager {
-public class CustomItemsManager {
     /**
      * A set of all registered integrations.
      */
-    private final Set<CustomItemsWrapper> registered = new HashSet<>();
+    private static final Set<CustomItemsWrapper> REGISTERED = new HashSet<>();
 
     /**
      * Register a new integration.
      *
      * @param integration The integration to register.
      */
-    public void register(@NotNull final CustomItemsWrapper integration) {
+    public static void register(@NotNull final CustomItemsWrapper integration) {
-        registered.add(integration);
+        REGISTERED.add(integration);
     }
 
     /**
@@ -30,9 +28,13 @@ public class CustomItemsManager {
      *
      * @see com.willfp.eco.core.items.Items
      */
-    public void registerAllItems() {
+    public static void registerAllItems() {
-        for (CustomItemsWrapper customItemsWrapper : registered) {
+        for (CustomItemsWrapper customItemsWrapper : REGISTERED) {
             customItemsWrapper.registerAllItems();
         }
     }
+
+    private CustomItemsManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/customitems/CustomItemsWrapper.java

@@ -1,9 +1,11 @@
 package com.willfp.eco.core.integrations.customitems;
 
+import com.willfp.eco.core.integrations.Integration;
+
 /**
  * Wrapper class for custom item integrations.
  */
-public interface CustomItemsWrapper {
+public interface CustomItemsWrapper extends Integration {
     /**
      * Register all the custom items for a specific plugin into eco.
      *

eco-api/src/main/java/com/willfp/eco/core/integrations/economy/EconomyManager.java

@@ -0,0 +1,101 @@
+package com.willfp.eco.core.integrations.economy;
+
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Class to handle economy.
+ */
+public final class EconomyManager {
+    /**
+     * A set of all registered integrations.
+     */
+    private static final Set<EconomyWrapper> REGISTERED = new HashSet<>();
+
+    /**
+     * Register a new integration.
+     *
+     * @param integration The integration to register.
+     */
+    public static void register(@NotNull final EconomyWrapper integration) {
+        REGISTERED.add(integration);
+    }
+
+    /**
+     * Get if any economy registrations are registered.
+     *
+     * @return If any economy.
+     */
+    public static boolean hasRegistrations() {
+        return !REGISTERED.isEmpty();
+    }
+
+    /**
+     * Get if a player has a certain amount.
+     *
+     * @param player The player.
+     * @param amount The amount.
+     * @return If the player has the amount.
+     */
+    public static boolean hasAmount(@NotNull final OfflinePlayer player,
+                             final double amount) {
+        for (EconomyWrapper wrapper : REGISTERED) {
+            return wrapper.hasAmount(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Give money to a player.
+     *
+     * @param player The player.
+     * @param amount The amount to give.
+     * @return If the transaction was a success.
+     */
+    public static boolean giveMoney(@NotNull final OfflinePlayer player,
+                             final double amount) {
+        for (EconomyWrapper wrapper : REGISTERED) {
+            return wrapper.giveMoney(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Remove money from a player.
+     *
+     * @param player The player.
+     * @param amount The amount to remove.
+     * @return If the transaction was a success.
+     */
+    public static boolean removeMoney(@NotNull final OfflinePlayer player,
+                               final double amount) {
+        for (EconomyWrapper wrapper : REGISTERED) {
+            return wrapper.removeMoney(player, amount);
+        }
+
+        return false;
+    }
+
+    /**
+     * Get the balance of a player.
+     *
+     * @param player The player.
+     * @return The balance.
+     */
+    public static double getBalance(@NotNull final OfflinePlayer player) {
+        for (EconomyWrapper wrapper : REGISTERED) {
+            return wrapper.getBalance(player);
+        }
+
+        return 0;
+    }
+
+    private EconomyManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/economy/EconomyWrapper.java

@@ -0,0 +1,48 @@
+package com.willfp.eco.core.integrations.economy;
+
+import com.willfp.eco.core.integrations.Integration;
+import org.bukkit.OfflinePlayer;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Wrapper class for economy integrations.
+ */
+public interface EconomyWrapper extends Integration {
+    /**
+     * Get if a player has a certain amount.
+     *
+     * @param player The player.
+     * @param amount The amount.
+     * @return If the player has the amount.
+     */
+    boolean hasAmount(@NotNull OfflinePlayer player,
+                      double amount);
+
+    /**
+     * Give money to a player.
+     *
+     * @param player The player.
+     * @param amount The amount to give.
+     * @return If the transaction was a success.
+     */
+    boolean giveMoney(@NotNull OfflinePlayer player,
+                      double amount);
+
+    /**
+     * Remove money from a player.
+     *
+     * @param player The player.
+     * @param amount The amount to remove.
+     * @return If the transaction was a success.
+     */
+    boolean removeMoney(@NotNull OfflinePlayer player,
+                        double amount);
+
+    /**
+     * Get the balance of a player.
+     *
+     * @param player The player.
+     * @return The balance.
+     */
+    double getBalance(@NotNull OfflinePlayer player);
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/hologram/DummyHologram.java

@@ -0,0 +1,20 @@
+package com.willfp.eco.core.integrations.hologram;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * Dummy hologram, created if no integrations are present on the server.
+ */
+class DummyHologram implements Hologram {
+    @Override
+    public void remove() {
+        // Do nothing.
+    }
+
+    @Override
+    public void setContents(@NotNull final List<String> contents) {
+        // Do nothing.
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/hologram/Hologram.java

@@ -0,0 +1,22 @@
+package com.willfp.eco.core.integrations.hologram;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * Wrapper class for plugin-specific holograms.
+ */
+public interface Hologram {
+    /**
+     * Remove the hologram.
+     */
+    void remove();
+
+    /**
+     * Set the hologram contents.
+     *
+     * @param contents The contents.
+     */
+    void setContents(@NotNull List<String> contents);
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/hologram/HologramManager.java

@@ -0,0 +1,47 @@
+package com.willfp.eco.core.integrations.hologram;
+
+import org.bukkit.Location;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * Class to handle hologram integrations.
+ */
+public final class HologramManager {
+    /**
+     * A set of all registered integrations.
+     */
+    private static final Set<HologramWrapper> REGISTERED = new HashSet<>();
+
+    /**
+     * Register a new integration.
+     *
+     * @param integration The integration to register.
+     */
+    public static void register(@NotNull final HologramWrapper integration) {
+        REGISTERED.add(integration);
+    }
+
+    /**
+     * Create hologram.
+     *
+     * @param location The location.
+     * @param contents The contents for the hologram.
+     * @return The hologram.
+     */
+    public static Hologram createHologram(@NotNull final Location location,
+                                   @NotNull final List<String> contents) {
+        for (HologramWrapper wrapper : REGISTERED) {
+            return wrapper.createHologram(location, contents);
+        }
+
+        return new DummyHologram();
+    }
+
+    private HologramManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/hologram/HologramWrapper.java

@@ -0,0 +1,22 @@
+package com.willfp.eco.core.integrations.hologram;
+
+import com.willfp.eco.core.integrations.Integration;
+import org.bukkit.Location;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * Wrapper class for hologram integrations.
+ */
+public interface HologramWrapper extends Integration {
+    /**
+     * Create hologram.
+     *
+     * @param location The location.
+     * @param contents The contents for the hologram.
+     * @return The hologram.
+     */
+    Hologram createHologram(@NotNull Location location,
+                            @NotNull List<String> contents);
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/mcmmo/McmmoManager.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.integrations.mcmmo;
 
-import lombok.experimental.UtilityClass;
 import org.bukkit.block.Block;
 import org.bukkit.event.Event;
 import org.jetbrains.annotations.NotNull;
@@ -11,20 +10,19 @@ import java.util.Set;
 /**
  * Class to handle mcmmo integrations.
  */
-@UtilityClass
+public final class McmmoManager {
-public class McmmoManager {
     /**
      * A set of all registered integrations.
      */
-    private final Set<McmmoWrapper> regsistered = new HashSet<>();
+    private static final Set<McmmoWrapper> REGISTERED = new HashSet<>();
 
     /**
      * Register a new integration.
      *
      * @param integration The integration to register.
      */
-    public void register(@NotNull final McmmoWrapper integration) {
+    public static void register(@NotNull final McmmoWrapper integration) {
-        regsistered.add(integration);
+        REGISTERED.add(integration);
     }
 
     /**
@@ -33,8 +31,8 @@ public class McmmoManager {
      * @param block The block.
      * @return The bonus drop count.
      */
-    public int getBonusDropCount(@NotNull final Block block) {
+    public static int getBonusDropCount(@NotNull final Block block) {
-        for (McmmoWrapper mcmmoWrapper : regsistered) {
+        for (McmmoWrapper mcmmoWrapper : REGISTERED) {
             return mcmmoWrapper.getBonusDropCount(block);
         }
         return 0;
@@ -46,10 +44,14 @@ public class McmmoManager {
      * @param event The event to check.
      * @return If the event is fake.
      */
-    public boolean isFake(@NotNull final Event event) {
+    public static boolean isFake(@NotNull final Event event) {
-        for (McmmoWrapper mcmmoWrapper : regsistered) {
+        for (McmmoWrapper mcmmoWrapper : REGISTERED) {
             return mcmmoWrapper.isFake(event);
         }
         return false;
     }
+
+    private McmmoManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/mcmmo/McmmoWrapper.java

@@ -1,5 +1,6 @@
 package com.willfp.eco.core.integrations.mcmmo;
 
+import com.willfp.eco.core.integrations.Integration;
 import org.bukkit.block.Block;
 import org.bukkit.event.Event;
 import org.jetbrains.annotations.NotNull;
@@ -7,7 +8,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Wrapper class for mcmmo integrations.
  */
-public interface McmmoWrapper {
+public interface McmmoWrapper extends Integration {
     /**
      * Get bonus drop count of block.
      *

eco-api/src/main/java/com/willfp/eco/core/integrations/placeholder/PlaceholderEntry.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.core.integrations.placeholder;
 
-import lombok.Getter;
 import org.apache.commons.lang.Validate;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
@@ -17,7 +16,6 @@ public class PlaceholderEntry {
     /**
      * The name of the placeholder, used in lookups.
      */
-    @Getter
     private final String identifier;
 
     /**
@@ -77,4 +75,20 @@ public class PlaceholderEntry {
     public boolean requiresPlayer() {
         return requiresPlayer;
     }
+
+    /**
+     * Get the identifier.
+     *
+     * @return The identifier.
+     */
+    public String getIdentifier() {
+        return identifier;
+    }
+
+    /**
+     * Register the placeholder.
+     */
+    public void register() {
+        PlaceholderManager.registerPlaceholder(this);
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/placeholder/PlaceholderManager.java

@@ -1,24 +1,22 @@
 package com.willfp.eco.core.integrations.placeholder;
 
-import lombok.experimental.UtilityClass;
 import org.bukkit.entity.Player;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
+import java.util.HashMap;
 import java.util.HashSet;
-import java.util.Optional;
+import java.util.Map;
 import java.util.Set;
-import java.util.concurrent.atomic.AtomicReference;
 
 /**
  * Class to handle placeholder integrations.
  */
-@UtilityClass
+public final class PlaceholderManager {
-public class PlaceholderManager {
     /**
      * All registered placeholders.
      */
-    private static final Set<PlaceholderEntry> REGISTERED_PLACEHOLDERS = new HashSet<>();
+    private static final Map<String, PlaceholderEntry> REGISTERED_PLACEHOLDERS = new HashMap<>();
 
     /**
      * All registered placeholder integrations.
@@ -41,8 +39,8 @@ public class PlaceholderManager {
      * @param expansion The {@link PlaceholderEntry} to register.
      */
     public static void registerPlaceholder(@NotNull final PlaceholderEntry expansion) {
-        REGISTERED_PLACEHOLDERS.removeIf(placeholderEntry -> placeholderEntry.getIdentifier().equalsIgnoreCase(expansion.getIdentifier()));
+        REGISTERED_PLACEHOLDERS.remove(expansion.getIdentifier());
-        REGISTERED_PLACEHOLDERS.add(expansion);
+        REGISTERED_PLACEHOLDERS.put(expansion.getIdentifier(), expansion);
     }
 
     /**
@@ -54,14 +52,15 @@ public class PlaceholderManager {
      */
     public static String getResult(@Nullable final Player player,
                                    @NotNull final String identifier) {
-        Optional<PlaceholderEntry> matching = REGISTERED_PLACEHOLDERS.stream().filter(expansion -> expansion.getIdentifier().equalsIgnoreCase(identifier)).findFirst();
+        PlaceholderEntry entry = REGISTERED_PLACEHOLDERS.get(identifier.toLowerCase());
-        if (matching.isEmpty()) {
+        if (entry == null) {
-            return null;
+            return "";
         }
-        PlaceholderEntry entry = matching.get();
+
         if (player == null && entry.requiresPlayer()) {
             return "";
         }
+
         return entry.getResult(player);
     }
 
@@ -74,8 +73,14 @@ public class PlaceholderManager {
      */
     public static String translatePlaceholders(@NotNull final String text,
                                                @Nullable final Player player) {
-        AtomicReference<String> translatedReference = new AtomicReference<>(text);
+        String processed = text;
-        REGISTERED_INTEGRATIONS.forEach(placeholderIntegration -> translatedReference.set(placeholderIntegration.translate(translatedReference.get(), player)));
+        for (PlaceholderIntegration integration : REGISTERED_INTEGRATIONS) {
-        return translatedReference.get();
+            processed = integration.translate(processed, player);
+        }
+        return processed;
+    }
+
+    private PlaceholderManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/core/integrations/shop/ShopManager.java

@@ -0,0 +1,38 @@
+package com.willfp.eco.core.integrations.shop;
+
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashSet;
+import java.util.Set;
+
+/**
+ * Class to handle shop integrations.
+ */
+public final class ShopManager {
+    /**
+     * A set of all registered integrations.
+     */
+    private static final Set<ShopWrapper> REGISTERED = new HashSet<>();
+
+    /**
+     * Register a new integration.
+     *
+     * @param integration The integration to register.
+     */
+    public static void register(@NotNull final ShopWrapper integration) {
+        REGISTERED.add(integration);
+    }
+
+    /**
+     * Register eco item provider for shop plugins.
+     */
+    public static void registerEcoProvider() {
+        for (ShopWrapper shopWrapper : REGISTERED) {
+            shopWrapper.registerEcoProvider();
+        }
+    }
+
+    private ShopManager() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/integrations/shop/ShopWrapper.java

@@ -0,0 +1,13 @@
+package com.willfp.eco.core.integrations.shop;
+
+import com.willfp.eco.core.integrations.Integration;
+
+/**
+ * Wrapper class for shop integrations.
+ */
+public interface ShopWrapper extends Integration {
+    /**
+     * Register eco item provider for shop plugins.
+     */
+    void registerEcoProvider();
+}

eco-api/src/main/java/com/willfp/eco/core/items/CustomItem.java

@@ -1,6 +1,7 @@
 package com.willfp.eco.core.items;
 
-import lombok.Getter;
+import com.willfp.eco.core.Eco;
+import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -9,7 +10,7 @@ import org.jetbrains.annotations.Nullable;
 import java.util.function.Predicate;
 
 /**
- * A custom item has 3 components:
+ * A custom item has 3 components.
  *
  * <ul>
  *     <li>The key to identify it</li>
@@ -21,13 +22,12 @@ public class CustomItem implements TestableItem {
     /**
      * The key.
      */
-    @Getter
     private final NamespacedKey key;
 
     /**
      * The test for ItemStacks to pass.
      */
-    private final Predicate<ItemStack> test;
+    private final Predicate<@NotNull ItemStack> test;
 
     /**
      * Example Item: what the user should see.
@@ -42,15 +42,25 @@ public class CustomItem implements TestableItem {
      * @param item The example ItemStacks.
      */
     public CustomItem(@NotNull final NamespacedKey key,
-                      @NotNull final Predicate<ItemStack> test,
+                      @NotNull final Predicate<@NotNull ItemStack> test,
                       @NotNull final ItemStack item) {
         this.key = key;
         this.test = test;
         this.item = item;
+
+        Eco.getHandler().getEcoPlugin().getScheduler().runLater(() -> {
+            if (!matches(getItem())) {
+                Bukkit.getLogger().severe("Item with key " + key + " is invalid!");
+            }
+        }, 1);
     }
 
     @Override
     public boolean matches(@Nullable final ItemStack itemStack) {
+        if (itemStack == null) {
+            return false;
+        }
+
         return test.test(itemStack);
     }
 
@@ -65,4 +75,13 @@ public class CustomItem implements TestableItem {
     public void register() {
         Items.registerCustomItem(this.getKey(), this);
     }
+
+    /**
+     * Get the key.
+     *
+     * @return The key.
+     */
+    public NamespacedKey getKey() {
+        return this.key;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/items/Items.java

@@ -1,80 +1,238 @@
 package com.willfp.eco.core.items;
 
+import com.willfp.eco.core.items.args.LookupArgParser;
+import com.willfp.eco.core.items.provider.ItemProvider;
 import com.willfp.eco.core.recipe.parts.EmptyTestableItem;
 import com.willfp.eco.core.recipe.parts.MaterialTestableItem;
+import com.willfp.eco.core.recipe.parts.ModifiedTestableItem;
 import com.willfp.eco.core.recipe.parts.TestableStack;
 import com.willfp.eco.util.NamespacedKeyUtils;
-import lombok.experimental.UtilityClass;
+import com.willfp.eco.util.NumberUtils;
 import org.bukkit.Material;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
 import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
 
-import java.util.HashMap;
+import java.util.ArrayList;
-import java.util.HashSet;
+import java.util.Arrays;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 /**
  * Class to manage all custom and vanilla items.
  */
-@UtilityClass
 public final class Items {
     /**
      * All recipe parts.
      */
-    private static final Map<NamespacedKey, CustomItem> REGISTRY = new HashMap<>();
+    private static final Map<NamespacedKey, TestableItem> REGISTRY = new ConcurrentHashMap<>();
 
     /**
-     * Register a new recipe part.
+     * All item providers.
-     *
-     * @param key  The key of the recipe part.
-     * @param part The recipe part.
      */
-    public void registerCustomItem(@NotNull final NamespacedKey key,
+    private static final Map<String, ItemProvider> PROVIDERS = new ConcurrentHashMap<>();
-                                   @NotNull final CustomItem part) {
+
-        REGISTRY.put(key, part);
+    /**
+     * All recipe parts.
+     */
+    private static final List<LookupArgParser> ARG_PARSERS = new ArrayList<>();
+
+    /**
+     * Register a new custom item.
+     *
+     * @param key  The key of the item.
+     * @param item The item.
+     */
+    public static void registerCustomItem(@NotNull final NamespacedKey key,
+                                   @NotNull final TestableItem item) {
+        REGISTRY.put(key, item);
     }
 
     /**
-     * Lookup item from string.
+     * Register a new item provider.
-     * <p>
-     * Used for recipes.
      *
-     * @param key The string to test.
+     * @param provider The provider.
-     * @return The found testable item, or an empty item if not found.
      */
-    public TestableItem lookup(@NotNull final String key) {
+    public static void registerItemProvider(@NotNull final ItemProvider provider) {
-        String[] split = key.toLowerCase().split(":");
+        PROVIDERS.put(provider.getNamespace(), provider);
+    }
+
+    /**
+     * Register a new arg parser.
+     *
+     * @param parser The parser.
+     */
+    public static void registerArgParser(@NotNull final LookupArgParser parser) {
+        ARG_PARSERS.add(parser);
+    }
+
+    /**
+     * Remove an item.
+     *
+     * @param key The key of the recipe part.
+     */
+    public static void removeCustomItem(@NotNull final NamespacedKey key) {
+        REGISTRY.remove(key);
+    }
+
+    /**
+     * This is the backbone of the entire eco item system.
+     * <p>
+     * You can lookup a TestableItem for any material, custom item,
+     * or item in general, and it will return it with any modifiers
+     * passed as parameters. This includes stack size (item amount)
+     * and enchantments that should be present on the item.
+     * <p>
+     * If you want to get an ItemStack instance from this, then just call
+     * {@link TestableItem#getItem()}.
+     * <p>
+     * The advantages of the testable item system are that there is the inbuilt
+     * {@link TestableItem#matches(ItemStack)} - this allows to check if any item
+     * is that testable item; which may sound negligible but actually it allows for
+     * much more power an flexibility. For example, you can have an item with an
+     * extra metadata tag, extra lore lines, different display name - and it
+     * will still work as long as the test passes. This is very important
+     * for custom crafting recipes where other plugins may add metadata
+     * values or the play may rename the item.
+     *
+     * @param key The lookup string.
+     * @return The testable item, or an {@link EmptyTestableItem}.
+     */
+    public static TestableItem lookup(@NotNull final String key) {
+        if (key.contains("?")) {
+            String[] options = key.split("\\?");
+            for (String option : options) {
+                TestableItem lookup = lookup(option);
+                if (!(lookup instanceof EmptyTestableItem)) {
+                    return lookup;
+                }
+            }
+
+            return new EmptyTestableItem();
+        }
+
+        String[] args = key.split(" ");
+        if (args.length == 0) {
+            return new EmptyTestableItem();
+        }
+
+        TestableItem item = null;
+
+        int stackAmount = 1;
+
+        String[] split = args[0].toLowerCase().split(":");
 
         if (split.length == 1) {
-            Material material = Material.getMaterial(key.toUpperCase());
+            Material material = Material.getMaterial(args[0].toUpperCase());
             if (material == null || material == Material.AIR) {
                 return new EmptyTestableItem();
             }
-            return new MaterialTestableItem(material);
+            item = new MaterialTestableItem(material);
         }
 
         if (split.length == 2) {
-            CustomItem part = REGISTRY.get(NamespacedKeyUtils.create(split[0], split[1]));
+            String namespace = split[0];
+            String keyID = split[1];
+            NamespacedKey namespacedKey = NamespacedKeyUtils.create(namespace, keyID);
 
+            TestableItem part = REGISTRY.get(namespacedKey);
+
+            if (part == null && PROVIDERS.containsKey(namespace)) {
+                ItemProvider provider = PROVIDERS.get(namespace);
+                item = provider.provideForKey(keyID);
+                if (item instanceof EmptyTestableItem || item == null) {
+                    return new EmptyTestableItem();
+                }
+                registerCustomItem(namespacedKey, item);
+            }
+
+            /*
+            Legacy id:amount format
+            This has been superseded by id amount
+             */
             if (part == null) {
                 Material material = Material.getMaterial(split[0].toUpperCase());
                 if (material == null || material == Material.AIR) {
                     return new EmptyTestableItem();
                 }
-                return new TestableStack(new MaterialTestableItem(material), Integer.parseInt(split[1]));
+                item = new MaterialTestableItem(material);
+                stackAmount = Integer.parseInt(split[1]);
             } else {
-                return part;
+                item = part;
             }
         }
 
+        /*
+        Legacy namespace:id:amount format
+        This has been superseded by namespace:id amount
+         */
         if (split.length == 3) {
-            CustomItem part = REGISTRY.get(NamespacedKeyUtils.create(split[0], split[1]));
+            TestableItem part = REGISTRY.get(NamespacedKeyUtils.create(split[0], split[1]));
-            return part == null ? new EmptyTestableItem() : new TestableStack(part, Integer.parseInt(split[2]));
+            if (part == null) {
+                return new EmptyTestableItem();
+            }
+            item = part;
+            stackAmount = Integer.parseInt(split[2]);
         }
 
-        return new EmptyTestableItem();
+        boolean usingNewStackFormat = false;
+
+        if (args.length >= 2) {
+            try {
+                stackAmount = Integer.parseInt(args[1]);
+                usingNewStackFormat = true;
+            } catch (NumberFormatException ignored) {
+            }
+        }
+
+        // Marked as redundant but i am covering all bases here
+        if (item == null || item instanceof EmptyTestableItem) {
+            return new EmptyTestableItem();
+        }
+
+        ItemStack example = item.getItem();
+        ItemMeta meta = example.getItemMeta();
+        assert meta != null;
+
+        String[] modifierArgs = Arrays.copyOfRange(args, usingNewStackFormat ? 2 : 1, args.length);
+
+        List<Predicate<ItemStack>> predicates = new ArrayList<>();
+
+        for (LookupArgParser argParser : ARG_PARSERS) {
+            Predicate<ItemStack> predicate = argParser.parseArguments(modifierArgs, meta);
+            if (predicate != null) {
+                predicates.add(argParser.parseArguments(modifierArgs, meta));
+            }
+        }
+
+        example.setItemMeta(meta);
+        if (!predicates.isEmpty()) {
+            item = new ModifiedTestableItem(
+                    item,
+                    test -> {
+                        for (Predicate<ItemStack> predicate : predicates) {
+                            if (!predicate.test(test)) {
+                                return false;
+                            }
+                        }
+
+                        return true;
+                    },
+                    example
+            );
+        }
+
+        if (stackAmount <= 1) {
+            return item;
+        } else {
+            return new TestableStack(item, stackAmount);
+        }
     }
 
     /**
@@ -83,8 +241,8 @@ public final class Items {
      * @param itemStack The itemStack to check.
      * @return If is recipe.
      */
-    public boolean isCustomItem(@NotNull final ItemStack itemStack) {
+    public static boolean isCustomItem(@NotNull final ItemStack itemStack) {
-        for (CustomItem item : REGISTRY.values()) {
+        for (TestableItem item : REGISTRY.values()) {
             if (item.matches(itemStack)) {
                 return true;
             }
@@ -92,12 +250,53 @@ public final class Items {
         return false;
     }
 
+    /**
+     * Get custom item from item.
+     *
+     * @param itemStack The item.
+     * @return The custom item, or null if not exists.
+     */
+    @Nullable
+    public static CustomItem getCustomItem(@NotNull final ItemStack itemStack) {
+        for (TestableItem item : REGISTRY.values()) {
+            if (item.matches(itemStack)) {
+                return getOrWrap(item);
+            }
+        }
+        return null;
+    }
+
     /**
      * Get all registered custom items.
      *
      * @return A set of all items.
      */
-    public Set<CustomItem> getCustomItems() {
+    public static Set<CustomItem> getCustomItems() {
-        return new HashSet<>(REGISTRY.values());
+        return REGISTRY.values().stream().map(Items::getOrWrap).collect(Collectors.toSet());
+    }
+
+    /**
+     * Return a CustomItem instance for a given TestableItem.
+     * <p>
+     * Used internally since 6.10.0 when the registration moved from {@link CustomItem}
+     * to {@link TestableItem} for added flexibility.
+     *
+     * @param item The item.
+     * @return The CustomItem.
+     */
+    public static CustomItem getOrWrap(@NotNull final TestableItem item) {
+        if (item instanceof CustomItem) {
+            return (CustomItem) item;
+        } else {
+            return new CustomItem(
+                    NamespacedKeyUtils.createEcoKey("wrapped_" + NumberUtils.randInt(0, 100000)),
+                    item::matches,
+                    item.getItem()
+            );
+        }
+    }
+
+    private Items() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/core/items/args/EnchantmentArgParser.java

@@ -0,0 +1,83 @@
+package com.willfp.eco.core.items.args;
+
+import org.bukkit.NamespacedKey;
+import org.bukkit.enchantments.Enchantment;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.EnchantmentStorageMeta;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Predicate;
+
+/**
+ * Parses enchantment arguments.
+ */
+public class EnchantmentArgParser implements LookupArgParser {
+    @Override
+    public @Nullable Predicate<ItemStack> parseArguments(@NotNull final String[] args,
+                                                         @NotNull final ItemMeta meta) {
+        Map<Enchantment, Integer> requiredEnchantments = new HashMap<>();
+
+        for (String enchantArg : args) {
+            String[] enchantArgSplit = enchantArg.split(":");
+
+            Enchantment enchantment = Enchantment.getByKey(NamespacedKey.minecraft(enchantArgSplit[0].toLowerCase()));
+            if (enchantment == null) {
+                continue;
+            }
+
+            if (enchantArgSplit.length < 2) {
+                continue;
+            }
+
+            int level = Integer.parseInt(enchantArgSplit[1]);
+
+            requiredEnchantments.put(enchantment, level);
+        }
+
+        if (requiredEnchantments.isEmpty()) {
+            return null;
+        }
+
+        if (meta instanceof EnchantmentStorageMeta storageMeta) {
+            requiredEnchantments.forEach((enchantment, integer) -> storageMeta.addStoredEnchant(enchantment, integer, true));
+        } else {
+            requiredEnchantments.forEach((enchantment, integer) -> meta.addEnchant(enchantment, integer, true));
+        }
+
+        return test -> {
+            if (!test.hasItemMeta()) {
+                return false;
+            }
+
+            ItemMeta testMeta = test.getItemMeta();
+
+            assert testMeta != null;
+
+            if (testMeta instanceof EnchantmentStorageMeta storageMeta) {
+                for (Map.Entry<Enchantment, Integer> entry : requiredEnchantments.entrySet()) {
+                    if (!storageMeta.hasStoredEnchant(entry.getKey())) {
+                        return false;
+                    }
+                    if (storageMeta.getStoredEnchantLevel(entry.getKey()) < entry.getValue()) {
+                        return false;
+                    }
+                }
+            } else {
+                for (Map.Entry<Enchantment, Integer> entry : requiredEnchantments.entrySet()) {
+                    if (!testMeta.hasEnchant(entry.getKey())) {
+                        return false;
+                    }
+                    if (testMeta.getEnchantLevel(entry.getKey()) < entry.getValue()) {
+                        return false;
+                    }
+                }
+            }
+
+            return true;
+        };
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/items/args/LookupArgParser.java

@@ -0,0 +1,25 @@
+package com.willfp.eco.core.items.args;
+
+import com.willfp.eco.core.items.TestableItem;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Predicate;
+
+/**
+ * An argument parser should generate the predicate as well
+ * as modify the ItemMeta for {@link TestableItem#getItem()}.
+ */
+public interface LookupArgParser {
+    /**
+     * Parse the arguments.
+     *
+     * @param args The arguments.
+     * @param meta The ItemMeta to modify.
+     * @return The predicate test to apply to the modified item.
+     */
+    @Nullable Predicate<ItemStack> parseArguments(@NotNull String[] args,
+                                                  @NotNull ItemMeta meta);
+}

eco-api/src/main/java/com/willfp/eco/core/items/args/TextureArgParser.java

@@ -0,0 +1,59 @@
+package com.willfp.eco.core.items.args;
+
+import com.willfp.eco.util.SkullUtils;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
+import org.bukkit.inventory.meta.SkullMeta;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Predicate;
+
+/**
+ * Parse skull textures.
+ */
+public class TextureArgParser implements LookupArgParser {
+    @Override
+    public @Nullable Predicate<ItemStack> parseArguments(@NotNull final String[] args,
+                                                         @NotNull final ItemMeta meta) {
+        String skullTexture = null;
+
+        for (String arg : args) {
+            String[] argSplit = arg.split(":");
+            if (!argSplit[0].equalsIgnoreCase("texture")) {
+                continue;
+            }
+
+            if (argSplit.length < 2) {
+                continue;
+            }
+
+            skullTexture = argSplit[1];
+        }
+
+        if (meta instanceof SkullMeta skullMeta && skullTexture != null) {
+            SkullUtils.setSkullTexture(skullMeta, skullTexture);
+        }
+
+        if (skullTexture == null) {
+            return null;
+        }
+
+        String finalSkullTexture = skullTexture;
+        return test -> {
+            if (!test.hasItemMeta()) {
+                return false;
+            }
+
+            ItemMeta testMeta = test.getItemMeta();
+
+            assert testMeta != null;
+
+            if (testMeta instanceof SkullMeta skullMeta) {
+                return finalSkullTexture.equalsIgnoreCase(SkullUtils.getSkullTexture(skullMeta));
+            }
+
+            return true;
+        };
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/items/builder/AbstractItemStackBuilder.java

@@ -1,8 +1,6 @@
 package com.willfp.eco.core.items.builder;
 
 import com.willfp.eco.util.StringUtils;
-import lombok.AccessLevel;
-import lombok.Getter;
 import org.apache.commons.lang.Validate;
 import org.bukkit.Material;
 import org.bukkit.NamespacedKey;
@@ -29,13 +27,11 @@ public abstract class AbstractItemStackBuilder<T extends ItemMeta, U extends Abs
     /**
      * The ItemMeta used while building.
      */
-    @Getter(AccessLevel.PROTECTED)
     private final T meta;
 
     /**
      * The ItemStack.
      */
-    @Getter(AccessLevel.PROTECTED)
     private final ItemStack base;
 
     /**
@@ -73,6 +69,11 @@ public abstract class AbstractItemStackBuilder<T extends ItemMeta, U extends Abs
     @Override
     public U addEnchantment(@NotNull final Enchantment enchantment,
                             final int level) {
+        //noinspection ConstantConditions
+        if (enchantment == null) {
+            return (U) this;
+        }
+
         meta.addEnchant(enchantment, level, true);
         return (U) this;
     }
@@ -196,4 +197,22 @@ public abstract class AbstractItemStackBuilder<T extends ItemMeta, U extends Abs
 
         return base;
     }
+
+    /**
+     * Get the base ItemStack.
+     *
+     * @return The base ItemStack.
+     */
+    protected ItemStack getBase() {
+        return base;
+    }
+
+    /**
+     * Get the meta.
+     *
+     * @return The meta.
+     */
+    protected T getMeta() {
+        return meta;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/items/provider/ItemProvider.java

@@ -0,0 +1,47 @@
+package com.willfp.eco.core.items.provider;
+
+import com.willfp.eco.core.items.TestableItem;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Item providers are call-site registrations for items. In other words,
+ * they only register their items when a request is made. This is marginally
+ * slower, however it is required for certain plugins, and fixes bugs related to
+ * loading orders.
+ *
+ * @see TestableItem
+ */
+public abstract class ItemProvider {
+    /**
+     * The namespace.
+     */
+    private final String namespace;
+
+    /**
+     * Create a new ItemProvider for a specific namespace.
+     *
+     * @param namespace The namespace.
+     */
+    protected ItemProvider(@NotNull final String namespace) {
+        this.namespace = namespace;
+    }
+
+    /**
+     * Provide a TestableItem for a given key.
+     *
+     * @param key The item ID.
+     * @return The TestableItem, or null if not found.
+     */
+    @Nullable
+    public abstract TestableItem provideForKey(@NotNull String key);
+
+    /**
+     * Get the namespace.
+     *
+     * @return The namespace.
+     */
+    public String getNamespace() {
+        return this.namespace;
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/proxy/ProxyConstants.java

@@ -1,15 +1,17 @@
 package com.willfp.eco.core.proxy;
 
-import lombok.experimental.UtilityClass;
 import org.bukkit.Bukkit;
 
 /**
  * Proxy / NMS constants.
  */
-@UtilityClass
+public final class ProxyConstants {
-public class ProxyConstants {
     /**
      * The NMS version that the server is running on.
      */
     public static final String NMS_VERSION = Bukkit.getServer().getClass().getPackage().getName().split("\\.")[3];
+
+    private ProxyConstants() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/recipe/Recipes.java

@@ -6,7 +6,6 @@ import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.items.Items;
 import com.willfp.eco.core.recipe.recipes.CraftingRecipe;
 import com.willfp.eco.core.recipe.recipes.ShapedCraftingRecipe;
-import lombok.experimental.UtilityClass;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -17,9 +16,8 @@ import java.util.List;
 /**
  * Utility class to manage and register crafting recipes.
  */
-@UtilityClass
 @SuppressWarnings("deprecation")
-public class Recipes {
+public final class Recipes {
     /**
      * Registry of all recipes.
      */
@@ -31,7 +29,7 @@ public class Recipes {
      *
      * @param recipe The recipe.
      */
-    public void register(@NotNull final CraftingRecipe recipe) {
+    public static void register(@NotNull final CraftingRecipe recipe) {
         RECIPES.forcePut(recipe.getKey(), recipe);
     }
 
@@ -42,7 +40,7 @@ public class Recipes {
      * @return The match, or null if not found.
      */
     @Nullable
-    public CraftingRecipe getMatch(@NotNull final ItemStack[] matrix) {
+    public static CraftingRecipe getMatch(@NotNull final ItemStack[] matrix) {
         return RECIPES.values().stream().filter(recipe -> recipe.test(matrix)).findFirst().orElse(null);
     }
 
@@ -53,7 +51,7 @@ public class Recipes {
      * @return The recipe, or null if not found.
      */
     @Nullable
-    public CraftingRecipe getRecipe(@NotNull final NamespacedKey key) {
+    public static CraftingRecipe getRecipe(@NotNull final NamespacedKey key) {
         CraftingRecipe recipe = RECIPES.get(key);
         if (recipe != null) {
             return recipe;
@@ -77,10 +75,10 @@ public class Recipes {
      * @param recipeStrings The recipe.
      * @return The recipe.
      */
-    public CraftingRecipe createAndRegisterRecipe(@NotNull final EcoPlugin plugin,
+    public static CraftingRecipe createAndRegisterRecipe(@NotNull final EcoPlugin plugin,
-                                                  @NotNull final String key,
+                                                         @NotNull final String key,
-                                                  @NotNull final ItemStack output,
+                                                         @NotNull final ItemStack output,
-                                                  @NotNull final List<String> recipeStrings) {
+                                                         @NotNull final List<String> recipeStrings) {
         ShapedCraftingRecipe.Builder builder = ShapedCraftingRecipe.builder(plugin, key).setOutput(output);
 
         for (int i = 0; i < 9; i++) {
@@ -92,4 +90,8 @@ public class Recipes {
 
         return recipe;
     }
+
+    private Recipes() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/recipe/parts/MaterialTestableItem.java

@@ -1,7 +1,7 @@
 package com.willfp.eco.core.recipe.parts;
 
 import com.willfp.eco.core.items.TestableItem;
-import lombok.Getter;
+import org.apache.commons.lang.Validate;
 import org.bukkit.Material;
 import org.bukkit.inventory.ItemStack;
 import org.jetbrains.annotations.NotNull;
@@ -14,7 +14,6 @@ public class MaterialTestableItem implements TestableItem {
     /**
      * The material.
      */
-    @Getter
     private final Material material;
 
     /**
@@ -23,6 +22,8 @@ public class MaterialTestableItem implements TestableItem {
      * @param material The material.
      */
     public MaterialTestableItem(@NotNull final Material material) {
+        Validate.isTrue(material != Material.AIR, "You can't have air as the type!");
+
         this.material = material;
     }
 
@@ -41,4 +42,13 @@ public class MaterialTestableItem implements TestableItem {
     public ItemStack getItem() {
         return new ItemStack(material);
     }
+
+    /**
+     * Get the material.
+     *
+     * @return The material.
+     */
+    public Material getMaterial() {
+        return this.material;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/recipe/parts/ModifiedTestableItem.java

@@ -0,0 +1,79 @@
+package com.willfp.eco.core.recipe.parts;
+
+import com.willfp.eco.core.items.TestableItem;
+import org.bukkit.inventory.ItemStack;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.function.Predicate;
+
+/**
+ * Existing testable items with an extra filter.
+ *
+ * @see com.willfp.eco.core.items.CustomItem
+ */
+public class ModifiedTestableItem implements TestableItem {
+    /**
+     * The item.
+     */
+    private final TestableItem handle;
+
+    /**
+     * The amount.
+     */
+    private final Predicate<ItemStack> test;
+
+    /**
+     * The item for the modified test.
+     */
+    private final ItemStack example;
+
+    /**
+     * Create a new modified testable item.
+     *
+     * @param item    The item.
+     * @param test    The test.
+     * @param example The example.
+     */
+    public ModifiedTestableItem(@NotNull final TestableItem item,
+                                @NotNull final Predicate<ItemStack> test,
+                                @NotNull final ItemStack example) {
+        this.handle = item;
+        this.test = test;
+        this.example = example;
+    }
+
+    /**
+     * If the item matches the material.
+     *
+     * @param itemStack The item to test.
+     * @return If the item is of the specified material.
+     */
+    @Override
+    public boolean matches(@Nullable final ItemStack itemStack) {
+        return itemStack != null && handle.matches(itemStack) && test.test(itemStack);
+    }
+
+    @Override
+    public ItemStack getItem() {
+        return example;
+    }
+
+    /**
+     * Get the handle.
+     *
+     * @return The handle.
+     */
+    public TestableItem getHandle() {
+        return this.handle;
+    }
+
+    /**
+     * Get the test.
+     *
+     * @return The test.
+     */
+    public Predicate<ItemStack> getTest() {
+        return this.test;
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/recipe/parts/TestableStack.java

@@ -1,17 +1,11 @@
 package com.willfp.eco.core.recipe.parts;
 
-import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.items.TestableItem;
-import lombok.Getter;
 import org.apache.commons.lang.Validate;
 import org.bukkit.inventory.ItemStack;
-import org.bukkit.inventory.meta.ItemMeta;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
-import java.util.ArrayList;
-import java.util.List;
-
 /**
  * Stacks of items.
  */
@@ -24,7 +18,6 @@ public class TestableStack implements TestableItem {
     /**
      * The amount.
      */
-    @Getter
     private final int amount;
 
     /**
@@ -35,7 +28,8 @@ public class TestableStack implements TestableItem {
      */
     public TestableStack(@NotNull final TestableItem item,
                          final int amount) {
-        Validate.isTrue(!(item instanceof TestableStack));
+        Validate.isTrue(!(item instanceof TestableStack), "You can't stack a stack!");
+        Validate.isTrue(!(item instanceof EmptyTestableItem), "You can't stack air!");
 
         this.handle = item;
         this.amount = amount;
@@ -55,19 +49,25 @@ public class TestableStack implements TestableItem {
     @Override
     public ItemStack getItem() {
         ItemStack temp = handle.getItem().clone();
-        ItemMeta meta = temp.getItemMeta();
-        assert meta != null;
-
-        List<String> lore = meta.hasLore() ? meta.getLore() : new ArrayList<>();
-        assert lore != null;
-        lore.add("");
-        String add = Eco.getHandler().getEcoPlugin().getLangYml().getString("multiple-in-craft");
-        add = add.replace("%amount%", String.valueOf(amount));
-        lore.add(add);
-        meta.setLore(lore);
-        temp.setItemMeta(meta);
         temp.setAmount(amount);
-
         return temp;
     }
+
+    /**
+     * Get the handle.
+     *
+     * @return The handle.
+     */
+    public TestableItem getHandle() {
+        return this.handle;
+    }
+
+    /**
+     * Get the amount in the stack.
+     *
+     * @return The amount.
+     */
+    public int getAmount() {
+        return this.amount;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/recipe/recipes/RecipePosition.java

@@ -1,7 +1,5 @@
 package com.willfp.eco.core.recipe.recipes;
 
-import lombok.Getter;
-
 /**
  * Positions in a 3x3 crafting recipe.
  */
@@ -54,7 +52,6 @@ public enum RecipePosition {
     /**
      * The index within a crafting table matrix.
      */
-    @Getter
     private final int index;
 
     /**
@@ -65,4 +62,13 @@ public enum RecipePosition {
     RecipePosition(final int index) {
         this.index = index;
     }
+
+    /**
+     * Get the index within a crafting table matrix.
+     *
+     * @return The index.
+     */
+    public int getIndex() {
+        return index;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/recipe/recipes/ShapedCraftingRecipe.java

@@ -1,16 +1,18 @@
 package com.willfp.eco.core.recipe.recipes;
 
+import com.willfp.eco.core.Eco;
 import com.willfp.eco.core.EcoPlugin;
 import com.willfp.eco.core.PluginDependent;
 import com.willfp.eco.core.items.TestableItem;
 import com.willfp.eco.core.recipe.Recipes;
 import com.willfp.eco.core.recipe.parts.EmptyTestableItem;
-import lombok.Getter;
+import com.willfp.eco.core.recipe.parts.TestableStack;
 import org.bukkit.Bukkit;
 import org.bukkit.NamespacedKey;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.RecipeChoice;
 import org.bukkit.inventory.ShapedRecipe;
+import org.bukkit.inventory.meta.ItemMeta;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
@@ -24,25 +26,21 @@ public final class ShapedCraftingRecipe extends PluginDependent<EcoPlugin> imple
     /**
      * Recipe parts.
      */
-    @Getter
     private final List<TestableItem> parts;
 
     /**
      * The key of the recipe.
      */
-    @Getter
     private final NamespacedKey key;
 
     /**
      * The key of the displayed recipe.
      */
-    @Getter
     private final NamespacedKey displayedKey;
 
     /**
      * The recipe's output.
      */
-    @Getter
     private final ItemStack output;
 
     private ShapedCraftingRecipe(@NotNull final EcoPlugin plugin,
@@ -79,6 +77,10 @@ public final class ShapedCraftingRecipe extends PluginDependent<EcoPlugin> imple
         ShapedRecipe shapedRecipe = new ShapedRecipe(this.getKey(), this.getOutput());
         shapedRecipe.shape("012", "345", "678");
         for (int i = 0; i < 9; i++) {
+            if (parts.get(i) instanceof EmptyTestableItem) {
+                continue;
+            }
+
             char character = String.valueOf(i).toCharArray()[0];
             shapedRecipe.setIngredient(character, parts.get(i).getItem().getType());
         }
@@ -86,8 +88,28 @@ public final class ShapedCraftingRecipe extends PluginDependent<EcoPlugin> imple
         ShapedRecipe displayedRecipe = new ShapedRecipe(this.getDisplayedKey(), this.getOutput());
         displayedRecipe.shape("012", "345", "678");
         for (int i = 0; i < 9; i++) {
+            if (parts.get(i) instanceof EmptyTestableItem) {
+                continue;
+            }
+
             char character = String.valueOf(i).toCharArray()[0];
-            displayedRecipe.setIngredient(character, new RecipeChoice.ExactChoice(parts.get(i).getItem()));
+            ItemStack item = parts.get(i).getItem();
+
+            if (parts.get(i) instanceof TestableStack) {
+                ItemMeta meta = item.getItemMeta();
+                assert meta != null;
+
+                List<String> lore = meta.hasLore() ? meta.getLore() : new ArrayList<>();
+                assert lore != null;
+                lore.add("");
+                String add = Eco.getHandler().getEcoPlugin().getLangYml().getString("multiple-in-craft");
+                add = add.replace("%amount%", String.valueOf(item.getAmount()));
+                lore.add(add);
+                meta.setLore(lore);
+                item.setItemMeta(meta);
+            }
+
+            displayedRecipe.setIngredient(character, new RecipeChoice.ExactChoice(item));
         }
 
         Bukkit.getServer().addRecipe(shapedRecipe);
@@ -106,6 +128,42 @@ public final class ShapedCraftingRecipe extends PluginDependent<EcoPlugin> imple
         return new Builder(plugin, key);
     }
 
+    /**
+     * Get the parts.
+     *
+     * @return The parts.
+     */
+    public List<TestableItem> getParts() {
+        return this.parts;
+    }
+
+    /**
+     * Get the key.
+     *
+     * @return The key.
+     */
+    public NamespacedKey getKey() {
+        return this.key;
+    }
+
+    /**
+     * Get the displayed key.
+     *
+     * @return The displayed key.
+     */
+    public NamespacedKey getDisplayedKey() {
+        return this.displayedKey;
+    }
+
+    /**
+     * Get the output.
+     *
+     * @return The output.
+     */
+    public ItemStack getOutput() {
+        return this.output;
+    }
+
     /**
      * Builder for recipes.
      */

eco-api/src/main/java/com/willfp/eco/core/requirement/Requirement.java

@@ -0,0 +1,28 @@
+package com.willfp.eco.core.requirement;
+
+import org.bukkit.entity.Player;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+/**
+ * A requirement is a defined goal that a player must meet.
+ */
+public abstract class Requirement {
+    /**
+     * Create a new requirement.
+     */
+    protected Requirement() {
+
+    }
+
+    /**
+     * Test if the player meets the requirement.
+     *
+     * @param player The player.
+     * @param args   The arguments.
+     * @return The requirement.
+     */
+    public abstract boolean doesPlayerMeet(@NotNull Player player,
+                                           @NotNull List<String> args);
+}

eco-api/src/main/java/com/willfp/eco/core/requirement/RequirementFactory.java

@@ -0,0 +1,17 @@
+package com.willfp.eco.core.requirement;
+
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Interface for internal requirement factory implementations.
+ */
+public interface RequirementFactory {
+    /**
+     * Create a requirement.
+     *
+     * @param name The name.
+     * @return The requirement returned for the name.
+     * Will return a requirement that is always true if not found.
+     */
+    Requirement create(@NotNull String name);
+}

eco-api/src/main/java/com/willfp/eco/core/requirement/Requirements.java

@@ -0,0 +1,43 @@
+package com.willfp.eco.core.requirement;
+
+import com.willfp.eco.core.Eco;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Contains methods and fields pertaining to requirements.
+ */
+public final class Requirements {
+    /**
+     * Requires a player to have a permission.
+     */
+    public static final Requirement HAS_PERMISSION = Eco.getHandler().getRequirementFactory().create("has-permission");
+
+    /**
+     * Placeholder equals value.
+     */
+    public static final Requirement PLACEHOLDER_EQUALS = Eco.getHandler().getRequirementFactory().create("placeholder-equals");
+
+    /**
+     * Numeric placeholder greater than value.
+     */
+    public static final Requirement PLACEHOLDER_GREATER_THAN = Eco.getHandler().getRequirementFactory().create("placeholder-greater-than");
+
+    /**
+     * Numeric placeholder less than value.
+     */
+    public static final Requirement PLACEHOLDER_LESS_THAN = Eco.getHandler().getRequirementFactory().create("placeholder-less-than");
+
+    /**
+     * Get Requirements matching ID.
+     *
+     * @param name The ID to search for.
+     * @return The matching Requirements.
+     */
+    public static Requirement getByID(@NotNull final String name) {
+        return Eco.getHandler().getRequirementFactory().create(name);
+    }
+
+    private Requirements() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
+}

eco-api/src/main/java/com/willfp/eco/core/tuples/Pair.java

@@ -1,7 +1,5 @@
 package com.willfp.eco.core.tuples;
 
-import lombok.Getter;
-import lombok.Setter;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -14,16 +12,12 @@ public class Pair<A, B> {
     /**
      * The first item in the tuple.
      */
-    @Getter
-    @Setter
     @Nullable
     private A first;
 
     /**
      * The second item in the tuple.
      */
-    @Getter
-    @Setter
     @Nullable
     private B second;
 
@@ -38,4 +32,62 @@ public class Pair<A, B> {
         this.first = first;
         this.second = second;
     }
+
+    /**
+     * component1 exists to allow a pair to be destructured by kotlin.
+     * The default kotlin pair already has this, however there is no default
+     * pair in java so this exists for parity.
+     *
+     * @return First.
+     */
+    public A component1() {
+        return first;
+    }
+
+    /**
+     * component2 exists to allow a pair to be destructured by kotlin.
+     * The default kotlin pair already has this, however there is no default
+     * pair in java so this exists for parity.
+     *
+     * @return First.
+     */
+    public B component2() {
+        return second;
+    }
+
+    /**
+     * Get the first member of the tuple.
+     *
+     * @return The first member.
+     */
+    public @Nullable A getFirst() {
+        return this.first;
+    }
+
+    /**
+     * Get the second member of the tuple.
+     *
+     * @return The second member.
+     */
+    public @Nullable B getSecond() {
+        return this.second;
+    }
+
+    /**
+     * Set the first member of the tuple.
+     *
+     * @param first The data to set.
+     */
+    public void setFirst(@Nullable final A first) {
+        this.first = first;
+    }
+
+    /**
+     * Set the second member of the tuple.
+     *
+     * @param second The data to set.
+     */
+    public void setSecond(@Nullable final B second) {
+        this.second = second;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/tuples/Triplet.java

@@ -1,7 +1,5 @@
 package com.willfp.eco.core.tuples;
 
-import lombok.Getter;
-import lombok.Setter;
 import org.jetbrains.annotations.Nullable;
 
 /**
@@ -15,8 +13,6 @@ public class Triplet<A, B, C> extends Pair<A, B> {
     /**
      * The third item in the tuple.
      */
-    @Getter
-    @Setter
     @Nullable
     private C third;
 
@@ -34,4 +30,33 @@ public class Triplet<A, B, C> extends Pair<A, B> {
 
         this.third = third;
     }
+
+    /**
+     * component3 exists to allow a pair to be destructured by kotlin.
+     * The default kotlin pair already has this, however there is no default
+     * pair in java so this exists for parity.
+     *
+     * @return First.
+     */
+    public C component3() {
+        return third;
+    }
+
+    /**
+     * Get the third member of the tuple.
+     *
+     * @return The third.
+     */
+    public @Nullable C getThird() {
+        return this.third;
+    }
+
+    /**
+     * Set the third member of the tuple.
+     *
+     * @param third The data to set.
+     */
+    public void setThird(@Nullable final C third) {
+        this.third = third;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/web/Paste.java

@@ -1,9 +1,9 @@
 package com.willfp.eco.core.web;
 
 import com.willfp.eco.core.Eco;
-import lombok.Getter;
 import org.jetbrains.annotations.NotNull;
 
+import javax.net.ssl.HttpsURLConnection;
 import java.io.BufferedReader;
 import java.io.DataOutputStream;
 import java.io.IOException;
@@ -11,7 +11,6 @@ import java.io.InputStreamReader;
 import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLDecoder;
-import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.util.function.Consumer;
 
@@ -23,7 +22,6 @@ public class Paste {
     /**
      * The contents.
      */
-    @Getter
     private final String contents;
 
     /**
@@ -40,45 +38,42 @@ public class Paste {
      * <p>
      * Runs asynchronously to avoid hangups.
      *
-     * @param responseHandler The consumer to accept the response token.
+     * @param callback The consumer to accept the response token.
      */
-    public void getHastebinToken(@NotNull final Consumer<String> responseHandler) {
+    public void getHastebinToken(@NotNull final Consumer<String> callback) {
         Eco.getHandler().getEcoPlugin().getScheduler().runAsync(() -> {
             try {
-                String url = "https://hastebin.com/documents";
+                byte[] postData = contents.getBytes(StandardCharsets.UTF_8);
-                URL obj = new URL(url);
+                int postDataLength = postData.length;
-                HttpURLConnection con = (HttpURLConnection) obj.openConnection();
 
-                con.setRequestMethod("POST");
+                String requestURL = "https://hastebin.com/documents";
-                con.setRequestProperty("Content-Type", "application/json");
+                URL url = new URL(requestURL);
+                HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
+                conn.setDoOutput(true);
+                conn.setInstanceFollowRedirects(false);
+                conn.setRequestMethod("POST");
+                conn.setRequestProperty("User-Agent", "eco-Hastebin");
+                conn.setRequestProperty("Content-Length", Integer.toString(postDataLength));
+                conn.setUseCaches(false);
 
-                con.setDoOutput(true);
+                String response;
-                DataOutputStream wr = new DataOutputStream(con.getOutputStream());
+                DataOutputStream wr;
-                wr.writeBytes(URLEncoder.encode(contents, StandardCharsets.UTF_8));
-                wr.flush();
-                wr.close();
 
-                BufferedReader iny = new BufferedReader(
+                wr = new DataOutputStream(conn.getOutputStream());
-                        new InputStreamReader(con.getInputStream()));
+                wr.write(postData);
-                String output;
+                BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
-                StringBuilder responseBuilder = new StringBuilder();
+                response = reader.readLine();
 
-                while ((output = iny.readLine()) != null) {
+                assert response != null;
-                    responseBuilder.append(output);
+
+                if (response.contains("\"key\"")) {
+                    response = response.substring(response.indexOf(":") + 2, response.length() - 2);
+
+                    callback.accept(response);
                 }
-                iny.close();
-
-                String responseString = responseBuilder.toString();
-
-                responseString = responseString.replace("{\"key\":\"", "");
-                responseString = responseString.replace("\"}", "");
-
-                responseHandler.accept(responseString);
             } catch (IOException e) {
-                responseHandler.accept(e.getMessage());
+                callback.accept(e.getMessage());
             }
-
-            responseHandler.accept("");
         });
     }
 
@@ -96,7 +91,7 @@ public class Paste {
             conn.setRequestMethod("GET");
             try (var reader = new BufferedReader(
                     new InputStreamReader(conn.getInputStream()))) {
-                for (String line; (line = reader.readLine()) != null; ) {
+                for (String line; (line = reader.readLine()) != null;) {
                     result.append(line);
                 }
             }
@@ -107,4 +102,13 @@ public class Paste {
 
         return null;
     }
+
+    /**
+     * Get the contents.
+     *
+     * @return The contents.
+     */
+    public String getContents() {
+        return this.contents;
+    }
 }

eco-api/src/main/java/com/willfp/eco/core/web/UpdateChecker.java

@@ -26,16 +26,18 @@ public class UpdateChecker extends PluginDependent<EcoPlugin> {
     /**
      * Get the latest version of the plugin.
      *
-     * @param consumer The process to run after checking.
+     * @param callback The process to run after checking.
      */
-    public void getVersion(@NotNull final Consumer<? super String> consumer) {
+    public void getVersion(@NotNull final Consumer<? super String> callback) {
         this.getPlugin().getScheduler().runAsync(() -> {
             try {
-                InputStream inputStream = new URL("https://api.spigotmc.org/legacy/update.php?resource=" + this.getPlugin().getResourceId()).openStream();
+                InputStream inputStream = new URL(
+                        "https://api.polymart.org/v1/getResourceInfoSimple?key=version&resource_id=" + this.getPlugin().getResourceId()
+                ).openStream();
                 Scanner scanner = new Scanner(inputStream);
 
                 if (scanner.hasNext()) {
-                    consumer.accept(scanner.next());
+                    callback.accept(scanner.next());
                 }
             } catch (IOException e) {
                 this.getPlugin().getLogger().warning("Failed to check for updates: " + e.getMessage());

eco-api/src/main/java/com/willfp/eco/util/ArrowUtils.java

@@ -1,6 +1,5 @@
 package com.willfp.eco.util;
 
-import lombok.experimental.UtilityClass;
 import org.bukkit.entity.Arrow;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.metadata.MetadataValue;
@@ -12,27 +11,29 @@ import java.util.List;
 /**
  * Utilities / API methods for arrows.
  */
-@UtilityClass
+public final class ArrowUtils {
-public class ArrowUtils {
-
     /**
      * Get the bow from an arrow.
      *
      * @param arrow The arrow.
-     * @return The bow.
+     * @return The bow, or null if no bow.
      */
     @Nullable
-    public ItemStack getBow(@NotNull final Arrow arrow) {
+    public static ItemStack getBow(@NotNull final Arrow arrow) {
         List<MetadataValue> values = arrow.getMetadata("shot-from");
 
         if (values.isEmpty()) {
             return null;
         }
 
-        if (!(values.get(0) instanceof ItemStack)) {
+        if (!(values.get(0).value() instanceof ItemStack)) {
             return null;
         }
 
-        return (ItemStack) values.get(0);
+        return (ItemStack) values.get(0).value();
+    }
+
+    private ArrowUtils() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
     }
 }

eco-api/src/main/java/com/willfp/eco/util/BlockUtils.java

@@ -1,12 +1,14 @@
 package com.willfp.eco.util;
 
-import com.willfp.eco.core.tuples.Pair;
-import lombok.experimental.UtilityClass;
 import org.apache.commons.lang.Validate;
+import org.bukkit.Chunk;
+import org.bukkit.Location;
 import org.bukkit.Material;
+import org.bukkit.World;
 import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.entity.Player;
+import org.bukkit.persistence.PersistentDataType;
 import org.jetbrains.annotations.ApiStatus;
 import org.jetbrains.annotations.NotNull;
 
@@ -18,24 +20,21 @@ import java.util.function.BiConsumer;
 /**
  * Utilities / API methods for blocks.
  */
-@UtilityClass
+public final class BlockUtils {
-public class BlockUtils {
     /**
      * If the meta set function has been set.
      */
-    private boolean initialized = false;
+    private static boolean initialized = false;
 
     /**
      * The block break function.
      */
-    private BiConsumer<Player, Block> blockBreakConsumer = null;
+    private static BiConsumer<Player, Block> blockBreakConsumer = null;
-
-    private Pair<Block, Set<Block>> getNearbyBlocksRecursively(@NotNull final Block start,
-                                                               @NotNull final List<Material> allowedMaterials,
-                                                               @NotNull final Set<Block> blocks,
-                                                               final int limit) {
-        Block last = start;
 
+    private static Set<Block> getNearbyBlocks(@NotNull final Block start,
+                                              @NotNull final List<Material> allowedMaterials,
+                                              @NotNull final Set<Block> blocks,
+                                              final int limit) {
         for (BlockFace face : BlockFace.values()) {
             Block block = start.getRelative(face);
             if (blocks.contains(block)) {
@@ -44,46 +43,15 @@ public class BlockUtils {
 
             if (allowedMaterials.contains(block.getType())) {
                 blocks.add(block);
-                last = block;
 
-                if (blocks.size() > limit) {
+                if (blocks.size() > limit || blocks.size() > 2500) {
-                    return new Pair<>(last, blocks);
+                    return blocks;
                 }
 
-                Pair<Block, Set<Block>> pair = getNearbyBlocksRecursively(last, allowedMaterials, blocks, limit);
+                blocks.addAll(getNearbyBlocks(block, allowedMaterials, blocks, limit));
-                assert pair.getSecond() != null;
-
-                blocks.addAll(pair.getSecond());
             }
         }
 
-        return new Pair<>(last, blocks);
-    }
-
-    private Set<Block> getNearbyBlocks(@NotNull final Block start,
-                                       @NotNull final List<Material> allowedMaterials,
-                                       @NotNull final Set<Block> blocks,
-                                       final int limit) {
-        /*
-        Prevent stack overflow.
-         */
-        int cycles = (int) Math.ceil(limit / 1024D);
-
-        int cap = limit;
-        Block iterStart = start;
-
-        for (int i = 0; i < cycles; i++) {
-            assert iterStart != null;
-
-            Pair<Block, Set<Block>> pair = getNearbyBlocksRecursively(iterStart, allowedMaterials, blocks, cap);
-            assert pair.getSecond() != null;
-            iterStart = pair.getFirst();
-
-            blocks.addAll(pair.getSecond());
-
-            cap -= 1024;
-        }
-
         return blocks;
     }
 
@@ -95,9 +63,10 @@ public class BlockUtils {
      * @param limit            The maximum size of vein to return.
      * @return A set of all {@link Block}s.
      */
-    public Set<Block> getVein(@NotNull final Block start,
+    @NotNull
-                              @NotNull final List<Material> allowedMaterials,
+    public static Set<Block> getVein(@NotNull final Block start,
-                              final int limit) {
+                                     @NotNull final List<Material> allowedMaterials,
+                                     final int limit) {
         return getNearbyBlocks(start, allowedMaterials, new HashSet<>(), limit);
     }
 
@@ -107,25 +76,52 @@ public class BlockUtils {
      * @param player The player to break the block as.
      * @param block  The block to break.
      */
-    public void breakBlock(@NotNull final Player player,
+    public static void breakBlock(@NotNull final Player player,
-                           @NotNull final Block block) {
+                                  @NotNull final Block block) {
         Validate.isTrue(initialized, "Must be initialized!");
         Validate.notNull(blockBreakConsumer, "Must be initialized!");
 
+        Location location = block.getLocation();
+        World world = location.getWorld();
+        assert world != null;
+
+        if (location.getY() < world.getMinHeight() || location.getY() > world.getMaxHeight()) {
+            return;
+        }
+
         blockBreakConsumer.accept(player, block);
     }
 
+    /**
+     * Get if a block was placed by a player.
+     *
+     * @param block The block.
+     * @return If placed by a player.
+     */
+    public static boolean isPlayerPlaced(@NotNull final Block block) {
+        Chunk chunk = block.getChunk();
+
+        return chunk.getPersistentDataContainer().has(
+                NamespacedKeyUtils.createEcoKey(Integer.toString(block.getLocation().hashCode(), 16)),
+                PersistentDataType.INTEGER
+        );
+    }
+
     /**
      * Initialize the block break function.
      *
      * @param function The function.
      */
     @ApiStatus.Internal
-    public void initialize(@NotNull final BiConsumer<Player, Block> function) {
+    public static void initialize(@NotNull final BiConsumer<Player, Block> function) {
         Validate.isTrue(!initialized, "Already initialized!");
 
         blockBreakConsumer = function;
 
         initialized = true;
     }
+
+    private BlockUtils() {
+        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
+    }
 }