build: auto increment jar build names

build.gradle.kts

@@ -1,4 +1,5 @@
 import org.apache.commons.lang3.SystemUtils
+import java.util.Properties
 
 plugins {
     idea
@@ -9,25 +10,24 @@ plugins {
     kotlin("jvm") version "2.0.0"
 }
 
-//Constants:
-
 val baseGroup: String by project
 val mcVersion: String by project
-val version: String by project
-val mixinGroup = "$baseGroup.mixin"
+val versionBase: String by project
+val buildNumber: String by project
 val modid: String by project
+val mixinGroup = "$baseGroup.mixin"
+
+group = baseGroup
+version = "$versionBase-b$buildNumber"
 
-// Toolchains:
 java {
     toolchain.languageVersion.set(JavaLanguageVersion.of(8))
 }
 
-// Minecraft configuration:
 loom {
     log4jConfigs.from(file("log4j2.xml"))
     launchConfigs {
         "client" {
-            // If you don't want mixins, remove these lines
             property("mixin.debug", "true")
             arg("--tweakClass", "org.spongepowered.asm.launch.MixinTweaker")
         }
@@ -35,7 +35,6 @@ loom {
     runConfigs {
         "client" {
             if (SystemUtils.IS_OS_MAC_OSX) {
-                // This argument causes a crash on macOS
                 vmArgs.remove("-XstartOnFirstThread")
             }
         }
@@ -43,10 +42,8 @@ loom {
     }
     forge {
         pack200Provider.set(dev.architectury.pack200.java.Pack200Adapter())
-        // If you don't want mixins, remove this lines
         mixinConfig("mixins.$modid.json")
     }
-    // If you don't want mixins, remove these lines
     mixin {
         defaultRefmapName.set("mixins.$modid.refmap.json")
     }
@@ -62,12 +59,9 @@ sourceSets.main {
     kotlin.destinationDirectory.set(java.destinationDirectory)
 }
 
-// Dependencies:
-
 repositories {
     mavenCentral()
     maven("https://repo.spongepowered.org/maven/")
-    // If you don't want to log in with your real minecraft account, remove this line
     maven("https://pkgs.dev.azure.com/djtheredstoner/DevAuth/_packaging/public/maven/v1")
 }
 
@@ -82,30 +76,24 @@ dependencies {
 
     shadowImpl(kotlin("stdlib-jdk8"))
 
-    // If you don't want mixins, remove these lines
     shadowImpl("org.spongepowered:mixin:0.7.11-SNAPSHOT") {
         isTransitive = false
     }
     annotationProcessor("org.spongepowered:mixin:0.8.5-SNAPSHOT")
 
-    // If you don't want to log in with your real minecraft account, remove this line
     runtimeOnly("me.djtheredstoner:DevAuth-forge-legacy:1.2.1")
-
 }
 
-// Tasks:
-
 tasks.withType(JavaCompile::class) {
     options.encoding = "UTF-8"
 }
 
 tasks.withType(org.gradle.jvm.tasks.Jar::class) {
     archiveBaseName.set(modid)
+    archiveVersion.set("$version")
     manifest.attributes.run {
         this["FMLCorePluginContainsFMLMod"] = "true"
         this["ForceLoadAsMod"] = "true"
-
-        // If you don't want mixins, remove these lines
         this["TweakClass"] = "org.spongepowered.asm.launch.MixinTweaker"
         this["MixinConfigs"] = "mixins.$modid.json"
     }
@@ -124,7 +112,6 @@ tasks.processResources {
     rename("(.+_at.cfg)", "META-INF/$1")
 }
 
-
 val remapJar by tasks.named<net.fabricmc.loom.task.RemapJarTask>("remapJar") {
     archiveClassifier.set("")
     from(tasks.shadowJar)
@@ -145,12 +132,13 @@ tasks.shadowJar {
             println("Copying dependencies into mod: ${it.files}")
         }
     }
-
-    // If you want to include other dependencies and shadow them, you can relocate them in here
     fun relocate(name: String) = relocate(name, "$baseGroup.deps.$name")
 }
 
-tasks.assemble.get().dependsOn(tasks.remapJar)
+tasks.assemble {
+    dependsOn(tasks.remapJar)
+    dependsOn("incrementBuildNumber")
+}
 
 tasks.register<Copy>("illyExtractMappings") {
     from("O:/.gradle")
@@ -160,7 +148,6 @@ tasks.register<Copy>("illyExtractMappings") {
 tasks.register("illyApplyMappings") {
     dependsOn("illyExtractMappings")
     doLast {
-//        throw GradleException("${layout.buildDirectory.d}/mcp_mappings")
         val mappingsDir = file("O:/Kotlin Programming/sbt/build/mcp_mappings")
         if (mappingsDir.exists()) {
             project.ext.set("mappingsPath", mappingsDir.absolutePath)
@@ -175,4 +162,20 @@ tasks.withType<JavaCompile> {
     doLast {
         options.compilerArgs.add("-Amap=O:/Kotlin Programming/sbt/build/mcp_mappings")
     }
-}
+}
+
+// 🔁 Auto-increment build number each assemble
+tasks.register("incrementBuildNumber") {
+    doLast {
+        val propsFile = file("gradle.properties")
+        val props = Properties()
+        props.load(propsFile.inputStream())
+
+        val current = props.getProperty("buildNumber")?.toIntOrNull() ?: 1
+        val next = current + 1
+        props.setProperty("buildNumber", next.toString())
+        props.store(propsFile.outputStream(), null)
+
+        println("🔢 Build number incremented to $next")
+    }
+}