Convert root build script to kotlin gradle

Author: FlorianMichael

build.gradle

@@ -0,0 +1,173 @@
+plugins {
+    id("java")
+    id("maven-publish")
+    id("org.ajoberstar.grgit") version "5.3.0"
+    id("fabric-loom") version "1.9-SNAPSHOT"
+    id("com.github.ben-manes.versions") version "0.51.0"
+    id("xyz.wagyourtail.jvmdowngrader") version "0.7.1"
+    id("me.modmuss50.mod-publish-plugin") version "0.8.4"
+}
+
+private val env = System.getenv()
+group = "com.viaversion.fabric"
+description = "Client-side and server-side ViaVersion implementation for Fabric"
+version = "0.4.17+" + env["GITHUB_RUN_NUMBER"] + "-" + getBranch()
+
+fun getBranch(): String {
+    val branch = env["GITHUB_REF"] ?: grgit.branch.current().name ?: "unknown"
+    return branch.substringAfterLast("/")
+}
+
+allprojects {
+    apply(plugin = "java")
+    apply(plugin = "maven-publish")
+    apply(plugin = "fabric-loom")
+
+    java {
+        toolchain {
+            languageVersion.set(JavaLanguageVersion.of(21))
+            vendor.set(JvmVendorSpec.ADOPTIUM)
+        }
+        withSourcesJar()
+    }
+
+    tasks.withType<JavaCompile>().configureEach {
+        options.release.set(8)
+    }
+    tasks.withType<JavaExec>().configureEach {
+        javaLauncher.set(javaToolchains.launcherFor(java.toolchain))
+    }
+
+    version = rootProject.version
+    group = rootProject.group
+
+    repositories {
+        mavenCentral()
+        maven("https://repo.viaversion.com/")
+        maven("https://maven.fabricmc.net/")
+        maven("https://maven.terraformersmc.com/releases/")
+        maven("https://maven.nucleoid.xyz/")
+    }
+
+    dependencies {
+        implementation("com.viaversion:viaversion:${rootProject.extra["viaver_version"]}") {
+            // transitive = false because Guava is conflicting on runClient
+            isTransitive = false
+        }
+        modImplementation("net.fabricmc:fabric-loader:${rootProject.extra["loader_version"]}")
+    }
+
+    tasks.processResources {
+        filesMatching("fabric.mod.json") {
+            expand(rootProject.properties)
+        }
+    }
+}
+
+subprojects {
+    loom {
+        runs {
+            named("client") {
+                client()
+                ideConfigGenerated(true)
+                runDir("run")
+            }
+            named("server") {
+                server()
+                ideConfigGenerated(true)
+                runDir("run")
+            }
+        }
+    }
+
+    dependencies {
+        implementation(project(":")) {
+            exclude(group = "net.fabricmc", module = "fabric-loader") // prevent duplicate fabric-loader on run
+        }
+    }
+
+    publishing {
+        publications {
+            create<MavenPublication>("mavenJava") {
+                from(components["java"])
+            }
+        }
+    }
+}
+
+publishing {
+    publications {
+        create<MavenPublication>("mavenJava") {
+            from(components["java"])
+        }
+    }
+}
+
+subprojects.forEach {
+    rootProject.tasks.named("remapJar").configure {
+        dependsOn("${it.path}:remapJar")
+    }
+}
+
+val includeJ8 = configurations.create("includeJ8")
+
+jvmdg.dg(includeJ8)
+
+dependencies {
+    // dummy version
+    minecraft("com.mojang:minecraft:1.14.4")
+    mappings("net.fabricmc:yarn:1.14.4+build.18:v2")
+
+    includeJ8("com.viaversion:viaversion:${rootProject.extra["viaver_version"]}")
+    include("io.github.cottonmc:cotton-client-commands:1.1.0+1.15.2")
+}
+
+tasks.remapJar.configure {
+    nestedJars.from(includeJ8)
+    subprojects.forEach { subproject ->
+        subproject.tasks.matching { it.name == "remapJar" }.configureEach {
+            nestedJars.from(this)
+        }
+    }
+}
+
+val mcReleases = rootProject.extra["publish_mc_versions"].toString().split(",")
+        .map { it.trim() }
+
+publishMods {
+    file = tasks.remapJar.get().archiveFile.get().asFile
+    changelog = "A changelog can be found at https://github.com/ViaVersion/ViaFabric/commits"
+    version = rootProject.version.toString()
+    displayName = "[${getBranch()}] ViaFabric $version"
+    modLoaders.add("fabric")
+    dryRun = providers.environmentVariable("CURSEFORGE_TOKEN").getOrNull() == null
+
+    curseforge {
+        accessToken = providers.environmentVariable("CURSEFORGE_TOKEN").orNull
+        projectId = "391298"
+        type = BETA // alpha is hidden by default
+
+        javaVersions.addAll(
+                (8..22).map { JavaVersion.toVersion(it) }
+        )
+        minecraftVersions.addAll(mcReleases)
+        rootProject.extra["curseforge_mc_snapshot"]?.let {
+            minecraftVersions.add(it.toString())
+        }
+        optional("fabric-api")
+        embeds("cotton-client-commands")
+    }
+    modrinth {
+        accessToken = providers.environmentVariable("MODRINTH_TOKEN").orNull
+        projectId = "YlKdE5VK"
+        type = ALPHA
+        minecraftVersions.addAll(mcReleases)
+        rootProject.extra["modrinth_mc_snapshot"]?.let {
+            minecraftVersions.add(it.toString())
+        }
+        optional("fabric-api")
+        embeds("viaversion")
+    }
+}
+
+defaultTasks("clean", "build")