fix: Fix how the plugin breaks the Gradle configuration cache

Author: androa

plugin/src/main/kotlin/io/github/androa/gradle/plugin/avro/AvroExtension.kt

@@ -26,6 +26,12 @@ abstract class AvroExtension
          */
         abstract val outputDir: DirectoryProperty
 
+        /**
+         * Directory where intermediate files will be placed.
+         * Default: build/intermediates/avro
+         */
+        abstract val intermediateDir: DirectoryProperty
+
         /**
          * Set the encoding of the output files.
          * Possible values: UTF-8, UTF-16, etc.
@@ -79,6 +85,7 @@ abstract class AvroExtension
         init {
             schemas.convention(objects.fileTree().from("src/main/avro"))
             outputDir.convention(objects.directoryProperty().fileValue(File("build/generated/sources/avro")))
+            intermediateDir.convention(objects.directoryProperty().fileValue(File("build/intermediates/avro")))
 
             encoding.convention("UTF-8")
             stringType.convention(false)

plugin/src/main/kotlin/io/github/androa/gradle/plugin/avro/AvroPlugin.kt

@@ -13,6 +13,9 @@ class AvroPlugin : Plugin<Project> {
         // Register the task
         val generateTask: TaskProvider<GenerateAvroTask> =
             project.tasks.register("generateAvro", GenerateAvroTask::class.java) {
+                it.group = "avro"
+                it.description = "Generates Java classes from Avro schema files"
+
                 it.schemas.convention(extension.schemas)
                 it.outputDir.convention(extension.outputDir)
                 it.intermediateDir.convention(project.layout.buildDirectory.dir("intermediates/avro"))
@@ -35,7 +38,7 @@ class AvroPlugin : Plugin<Project> {
         // Add the generated sources to the source set
         project.plugins.withId("java") {
             val sourceSets = project.extensions.getByName("sourceSets") as SourceSetContainer
-            sourceSets.getByName("main").java.srcDir(generateTask.get().outputs.files)
+            sourceSets.getByName("main").java.srcDir(generateTask.map { it.outputs.files })
         }
     }
 }

plugin/src/main/kotlin/io/github/androa/gradle/plugin/avro/GenerateAvroTask.kt

@@ -117,7 +117,7 @@ abstract class GenerateAvroTask : DefaultTask() {
 
         // Determine if the input directory contains Avro protocol files.
         val inputDir = schemas.files.toSet()
-        val intermediateDir = project.file("build/intermediates/avro")
+        val intermediateDir = intermediateDir.get().asFile
 
         // Transform any Avro IDL (.avdl) files to Avro protocol (.avpr) files.
         if (transformIdl(inputDir, intermediateDir)) {