Revamp the build system

build.gradle.kts

@@ -0,0 +1,86 @@
+plugins {
+    id("java")
+    id("maven-publish")
+    id("org.jetbrains.gradle.plugin.idea-ext") version "1.1.7"
+    id("net.kyori.blossom") version "2.1.0"
+    id("com.github.johnrengelman.shadow") version "8.1.1"
+}
+
+group = "dev.plex"
+version = "1.4-SNAPSHOT"
+description = "Plex"
+
+subprojects {
+    apply(plugin = "java")
+    apply(plugin = "maven-publish")
+    apply(plugin = "org.jetbrains.gradle.plugin.idea-ext")
+    apply(plugin = "net.kyori.blossom")
+    apply(plugin = "com.github.johnrengelman.shadow")
+
+    repositories {
+        maven {
+            url = uri("https://repo.papermc.io/repository/maven-public/")
+        }
+
+        maven {
+            url = uri("https://repository.apache.org/content/repositories/snapshots/")
+        }
+
+        maven {
+            url = uri("https://repo.maven.apache.org/maven2/")
+        }
+
+        maven {
+            url = uri("https://jitpack.io")
+            content {
+                includeGroup("com.github.MilkBowl")
+            }
+        }
+
+        mavenCentral()
+    }
+
+    java {
+        toolchain.languageVersion.set(JavaLanguageVersion.of(17))
+    }
+
+    tasks {
+        compileJava {
+            options.encoding = Charsets.UTF_8.name()
+        }
+        javadoc {
+            options.encoding = Charsets.UTF_8.name()
+        }
+        processResources {
+            filteringCharset = Charsets.UTF_8.name()
+        }
+    }
+
+    publishing {
+        repositories {
+            maven {
+                val releasesRepoUrl = uri("https://nexus.telesphoreo.me/repository/plex-releases/")
+                val snapshotsRepoUrl = uri("https://nexus.telesphoreo.me/repository/plex-snapshots/")
+                url = if (rootProject.version.toString().endsWith("SNAPSHOT")) snapshotsRepoUrl else releasesRepoUrl
+                credentials {
+                    username = System.getenv("plexUser")
+                    password = System.getenv("plexPassword")
+                }
+            }
+        }
+    }
+}
+
+tasks.clean {
+    // Is there any way to not need to specify each subproject?
+    dependsOn(":server:clean")
+    dependsOn(":proxy:clean")
+}
+
+tasks.create<Copy>("copyJars") {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    // Is there any way to not need to specify each subproject?
+    from(tasks.getByPath(":server:shadowJar"))
+    from(tasks.getByPath(":proxy:jar"))
+    into(file("build/libs"))
+}