Implement support for custom concrete items.

samples/mixed/bukkit-plugins/build.gradle.kts

@@ -2,9 +2,10 @@ plugins {
   id("gay.pizza.foundation.concrete-root")
 }
 
-concrete {
+concreteRoot {
   minecraftServerPath.set("server")
   paperServerVersionGroup.set("1.19")
   paperApiVersion.set("1.19.3-R0.1-SNAPSHOT")
   acceptServerEula.set(true)
+  expansiveItemInclusion.set(true)
 }

samples/mixed/bukkit-plugins/hello-world/build.gradle.kts

@@ -7,6 +7,6 @@ dependencies {
   implementation(project(":bukkit-plugins:common-library"))
 }
 
-plugin {
+concreteItem {
   dependency(project(":bukkit-plugins:goodbye-world"))
 }

samples/mixed/other-library/build.gradle.kts

@@ -1,3 +1,10 @@
 plugins {
   id("gay.pizza.foundation.concrete-base")
 }
+
+concreteItem {
+  type.set("library")
+  fileInclusion {
+    tasks.jar.get().outputs.files.associateWith { "library-jar" }
+  }
+}

src/main/kotlin/gay/pizza/foundation/concrete/ConcreteBasePlugin.kt

@@ -4,6 +4,7 @@ import org.gradle.api.JavaVersion
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.plugins.JavaPluginExtension
+import org.gradle.kotlin.dsl.create
 import org.gradle.kotlin.dsl.getByType
 import org.gradle.kotlin.dsl.withType
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
@@ -40,5 +41,7 @@ open class ConcreteBasePlugin : Plugin<Project> {
         }
       }
     }
+
+    project.extensions.create<ConcreteItemExtension>("concreteItem")
   }
 }

src/main/kotlin/gay/pizza/foundation/concrete/ConcreteItemExtension.kt

@@ -0,0 +1,21 @@
+package gay.pizza.foundation.concrete
+
+import org.gradle.api.DomainObjectSet
+import org.gradle.api.Project
+import org.gradle.api.provider.Property
+import java.io.File
+
+interface ConcreteItemExtension {
+  val type: Property<String>
+  val version: Property<String>
+  val dependencies: DomainObjectSet<Project>
+  val fileInclusion: Property<() -> Map<File, String>>
+
+  fun dependency(project: Project) {
+    dependencies.add(project)
+  }
+
+  fun fileInclusion(inclusion: () -> Map<File, String>) {
+    fileInclusion.set(inclusion)
+  }
+}

src/main/kotlin/gay/pizza/foundation/concrete/ConcretePluginExtension.kt

@@ -1,12 +0,0 @@
-package gay.pizza.foundation.concrete
-
-import org.gradle.api.DomainObjectSet
-import org.gradle.api.Project
-
-interface ConcretePluginExtension {
-  val dependencies: DomainObjectSet<Project>
-
-  fun dependency(project: Project) {
-    dependencies.add(project)
-  }
-}

src/main/kotlin/gay/pizza/foundation/concrete/ConcretePluginPlugin.kt

@@ -1,6 +1,7 @@
 package gay.pizza.foundation.concrete
 
 import org.gradle.api.Project
+import org.gradle.kotlin.dsl.create
 import org.gradle.kotlin.dsl.get
 import org.gradle.language.jvm.tasks.ProcessResources
 
@@ -9,8 +10,6 @@ class ConcretePluginPlugin : ConcreteBaseBukkitPlugin() {
   override fun apply(project: Project) {
     super.apply(project)
 
-    project.extensions.create("plugin", ConcretePluginExtension::class.java)
-
     project.plugins.apply("com.github.johnrengelman.shadow")
 
     // During IDEA project import, if this code is active, it will print warnings.

src/main/kotlin/gay/pizza/foundation/concrete/ConcreteRootExtension.kt

@@ -7,4 +7,5 @@ interface ConcreteRootExtension {
   val paperApiVersion: Property<String>
   val minecraftServerPath: Property<String>
   val acceptServerEula: Property<Boolean>
+  val expansiveItemInclusion: Property<Boolean>
 }

src/main/kotlin/gay/pizza/foundation/concrete/ConcreteRootPlugin.kt

@@ -9,7 +9,7 @@ import java.nio.file.Paths
 class ConcreteRootPlugin : Plugin<Project> {
   override fun apply(project: Project) {
     project.apply(plugin = "base")
-    project.extensions.create<ConcreteRootExtension>("concrete")
+    project.extensions.create<ConcreteRootExtension>("concreteRoot")
     val setupPaperServer = project.tasks.create<SetupPaperServer>("setupPaperServer")
     val runPaperServer = project.tasks.create<RunPaperServer>("runPaperServer")
     runPaperServer.dependsOn(setupPaperServer)

src/main/kotlin/gay/pizza/foundation/concrete/UpdateManifestTask.kt

@@ -5,14 +5,20 @@ import org.gradle.api.tasks.TaskAction
 import java.nio.file.Files
 import java.nio.file.Path
 import kotlin.io.path.name
+import kotlin.io.path.relativeTo
 
 open class UpdateManifestTask : DefaultTask() {
   @TaskAction
   fun update() {
     val manifestsDir = ensureManifestsDirectory()
-    val rootPath = project.projectDir.toPath()
+    val rootExtension = project.concreteRootExtension
+    val rootPath = if (rootExtension.expansiveItemInclusion.orNull == true) {
+      project.rootProject.rootDir
+    } else {
+      project.rootDir
+    }
     val legacyUpdateManifest = project.findPluginProjects().mapNotNull { project ->
-      val paths = project.shadowJarOutputs!!.allFilesRelativeToPath(rootPath)
+      val paths = project.shadowJarOutputs!!.files.allFilesRelativeToPath(rootPath.toPath())
 
       if (paths.isNotEmpty()) {
         project.name to mapOf(
@@ -25,24 +31,25 @@ open class UpdateManifestTask : DefaultTask() {
     val legacyUpdateFile = manifestsDir.resolve("update.json")
     Files.writeString(legacyUpdateFile, Globals.gson.toJson(legacyUpdateManifest))
 
-    val extensibleUpdateManifestItems = project.findPluginProjects().mapNotNull { project ->
-      val paths = project.shadowJarOutputs!!.allFilesRelativeToPath(rootPath)
+    val extensibleUpdateManifestItems = project.findItemProjects().map { project ->
+      val concreteItemExtension = project.concreteItemExtension!!
+      val pathInclusion = concreteItemExtension.fileInclusion.orNull ?: {
+        project.shadowJarOutputs!!.files.associateWith { "plugin-jar" }
+      }
+      val paths = pathInclusion()
+
+      val dependencies = concreteItemExtension.dependencies.map { it.name }
 
-      val dependencies = project.concretePluginExtension.dependencies.map { it.name }
       ExtensibleManifestItem(
         name = project.name,
-        type = "bukkit-plugin",
-        version = project.version.toString(),
+        type = concreteItemExtension.type.orNull ?: "bukkit-plugin",
+        version = concreteItemExtension.version.orNull ?: project.version.toString(),
         dependencies = dependencies,
-        files = paths.map { path ->
-          var type = "unknown"
-          if (path.name.endsWith("-plugin.jar")) {
-            type = "plugin-jar"
-          }
+        files = paths.map { (path, type) ->
           ExtensibleManifestItemFile(
             name = path.name,
             type = type,
-            path = path.toUnixString()
+            path = path.toPath().relativeTo(rootPath.toPath()).toUnixString()
           )
         }
       )

src/main/kotlin/gay/pizza/foundation/concrete/extensions.kt

@@ -4,6 +4,7 @@ import com.github.jengelman.gradle.plugins.shadow.tasks.ShadowJar
 import org.gradle.api.Project
 import org.gradle.api.tasks.TaskContainer
 import org.gradle.api.tasks.TaskOutputs
+import java.io.File
 import java.nio.file.FileSystems
 import java.nio.file.Path
 
@@ -12,11 +13,30 @@ import java.nio.file.Path
  */
 internal fun Project.isPluginProject() = plugins.hasPlugin(ConcretePluginPlugin::class.java)
 
+/**
+ * Checks if the project has the [ConcreteBasePlugin] applied and is opting into item behavior.
+ */
+internal fun Project.isConcreteItem() =
+  isPluginProject() || concreteItemExtension?.type?.orNull != null
+
 /**
  * Finds all projects in the project's hierarchy that are plugins.
  */
 internal fun Project.findPluginProjects() = allprojects.filter { project -> project.isPluginProject() }
 
+/**
+ * Finds all projects in the project's hierarchy that are items.
+ */
+internal fun Project.findItemProjects(): List<Project> {
+  val optInExpansion = concreteRootExtension.expansiveItemInclusion.orNull ?: false
+  val searchScope = if (optInExpansion) {
+    project.rootProject.allprojects
+  } else {
+    allprojects
+  }
+  return searchScope.filter { project -> project.isConcreteItem() }
+}
+
 internal fun TaskContainer.addTaskDependency(dependent: String, dependency: String) {
   getByName(dependent).dependsOn(getByName(dependency))
 }
@@ -37,8 +57,8 @@ internal val Project.concreteRootExtension: ConcreteRootExtension
     error = { "Failed to find concrete root. Did you apply the concrete root plugin?" }
   )
 
-internal val Project.concretePluginExtension: ConcretePluginExtension
-  get() = extensions.getByType(ConcretePluginExtension::class.java)
+internal val Project.concreteItemExtension: ConcreteItemExtension?
+  get() = extensions.findByType(ConcreteItemExtension::class.java)
 
 /**
  * Finds the concrete root project, which is the first project in the project hierarchy
@@ -68,6 +88,6 @@ internal fun <T> Project.findTargetParent(valid: Project.() -> Boolean, extract:
   throw RuntimeException(error())
 }
 
-internal fun TaskOutputs.allFilesRelativeToPath(root: Path): List<Path> = files.map { root.relativize(it.toPath()) }
+internal fun Iterable<File>.allFilesRelativeToPath(root: Path): List<Path> = map { root.relativize(it.toPath()) }
 
 internal fun Path.toUnixString() = toString().replace(FileSystems.getDefault().separator, "/")