Another attempt to make publishing work

build-logic/build.gradle.kts

@@ -1,7 +1,12 @@
 plugins {
     `kotlin-dsl`
+    java
 }
 
 repositories {
     gradlePluginPortal()
 }
+
+dependencies {
+    implementation("gradle.plugin.com.github.jengelman.gradle.plugins", "shadow", "7.0.0")
+}

build-logic/src/main/kotlin/floodgate.base-conventions.gradle.kts

@@ -0,0 +1,38 @@
+plugins {
+    `java-library`
+    `maven-publish`
+//    id("net.ltgt.errorprone")
+}
+
+tasks {
+    processResources {
+        filesMatching(listOf("plugin.yml", "bungee.yml", "velocity-plugin.json")) {
+            expand(
+                "id" to "floodgate",
+                "name" to "floodgate",
+                "version" to project.version,
+                "description" to project.description,
+                "url" to "https://geysermc.org",
+                "author" to "GeyserMC"
+            )
+        }
+    }
+    compileJava {
+        options.encoding = Charsets.UTF_8.name()
+    }
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_1_8
+    targetCompatibility = JavaVersion.VERSION_1_8
+
+    withSourcesJar()
+}
+
+publishing {
+    publications.create<MavenPublication>("mavenJava") {
+        groupId = rootProject.group as String
+        artifactId = project.name
+        version = rootProject.version as String
+    }
+}

build-logic/src/main/kotlin/floodgate.shadow-conventions.gradle.kts

@@ -0,0 +1,33 @@
+import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
+
+plugins {
+    id("floodgate.base-conventions")
+    id("com.github.johnrengelman.shadow")
+}
+
+tasks {
+    named<Jar>("jar") {
+        archiveClassifier.set("unshaded")
+        from(project.rootProject.file("LICENSE"))
+    }
+    val shadowJar = named<ShadowJar>("shadowJar") {
+        archiveBaseName.set("floodgate-${project.name}")
+        archiveVersion.set("")
+        archiveClassifier.set("")
+        configureRelocations()
+    }
+    named("build") {
+        dependsOn(shadowJar)
+    }
+}
+
+fun ShadowJar.configureRelocations() {
+    //todo platform-independent relocations
+}
+
+publishing {
+    publications.named<MavenPublication>("mavenJava") {
+        artifact(tasks["shadowJar"])
+        artifact(tasks["sourcesJar"])
+    }
+}

build-logic/src/main/kotlin/floodgate.standard-conventions.gradle.kts

@@ -0,0 +1,9 @@
+plugins {
+    id("floodgate.base-conventions")
+}
+
+publishing {
+    publications.named<MavenPublication>("mavenJava") {
+        from(components["java"])
+    }
+}