From a1e167d13975ecbedf84a604778058df470537ff Mon Sep 17 00:00:00 2001
From: Jorge Vicente Cantero <jorgevc@fastmail.es>
Date: Tue, 28 Feb 2023 12:57:17 -0800
Subject: [PATCH] Add support for Gradle 8.0.1

---
 .../gradle/model/BloopConverter.scala             | 15 ++++++++++++++-
 .../gradle/ConfigGenerationSuite.scala            | 12 +++++++++---
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/src/main/scala/bloop/integrations/gradle/model/BloopConverter.scala b/src/main/scala/bloop/integrations/gradle/model/BloopConverter.scala
index 6f418d58..e4fc2b34 100644
--- a/src/main/scala/bloop/integrations/gradle/model/BloopConverter.scala
+++ b/src/main/scala/bloop/integrations/gradle/model/BloopConverter.scala
@@ -47,6 +47,8 @@ import org.gradle.api.file.RegularFileProperty
 import org.gradle.api.internal.file.copy.DefaultCopySpec
 import org.gradle.api.internal.tasks.compile.DefaultJavaCompileSpec
 import org.gradle.api.internal.tasks.compile.JavaCompilerArgumentsBuilder
+import org.gradle.api.plugins.JavaApplication
+import org.gradle.api.provider.Property
 import org.gradle.api.provider.Provider
 import org.gradle.api.tasks.SourceSet
 import org.gradle.api.tasks.bundling.AbstractArchiveTask
@@ -789,7 +791,7 @@ class BloopConverter(parameters: BloopParameters) {
 
     val mainClass =
       if (testTask.isEmpty)
-        project.javaApplicationExt.flatMap(f => Option(f.getMainClassName))
+        project.javaApplicationExt.flatMap(getJavaMainClass)
       else
         None
 
@@ -1109,6 +1111,17 @@ class BloopConverter(parameters: BloopParameters) {
     }
   }
 
+  private def getJavaMainClass(app: JavaApplication): Option[String] =
+    try Option(app.getMainClassName())
+    catch {
+      case _: NoSuchMethodError =>
+        // Gradle 8.0.1 removed `mainClassName` in favor of `mainClass`
+        // https://docs.gradle.org/current/javadoc/org/gradle/api/plugins/JavaApplication.html#getMainClass--
+        val mainClassNameHandle =
+          classOf[JavaApplication].getDeclaredMethod("getMainClass")
+        Option(mainClassNameHandle.invoke(app).asInstanceOf[Property[String]].getOrNull())
+    }
+
   private def getPluginsAsOptions(scalaCompile: ScalaCompile): List[String] = {
     // Gradle 6.4 has scalaCompilerPlugins option
     try {
diff --git a/src/test/scala/bloop/integrations/gradle/ConfigGenerationSuite.scala b/src/test/scala/bloop/integrations/gradle/ConfigGenerationSuite.scala
index a31ade44..ce136487 100644
--- a/src/test/scala/bloop/integrations/gradle/ConfigGenerationSuite.scala
+++ b/src/test/scala/bloop/integrations/gradle/ConfigGenerationSuite.scala
@@ -46,10 +46,18 @@ class ConfigGenerationSuite_Android_Scala_plugin extends ConfigGenerationSuite {
 }
  */
 
+class ConfigGenerationSuite_8 extends ConfigGenerationSuite {
+  protected val gradleVersion: String = "8.0.1"
+  protected val supportsCurrentJavaVersion: Boolean = true
+  // TODO: Enable Android support for Gradle versions higher than 8.0.1 in the future
+  override protected val supportsAndroid: Boolean = false
+}
+
 abstract class ConfigGenerationSuite extends BaseConfigSuite {
   protected val gradleVersion: String
   protected val supportsCurrentJavaVersion: Boolean
-  private def supportsAndroid: Boolean = gradleVersion >= "6.1.1"
+  protected def supportsAndroid: Boolean = gradleVersion >= "6.1.1"
+
   // private def supportsAndroidScalaPlugin: Boolean = gradleVersion == "6.6"
   private def supportsScala3: Boolean = gradleVersion >= "7.3"
   private def canConsumeTestRuntime: Boolean = gradleVersion < "7.0"
@@ -221,7 +229,6 @@ abstract class ConfigGenerationSuite extends BaseConfigSuite {
         .withGradleVersion(gradleVersion)
         .withProjectDir(testProjectDir.getRoot)
         .withPluginClasspath(getClasspath)
-        .forwardOutput()
         .withArguments("bloopInstall", "-Si")
         .build()
 
@@ -1470,7 +1477,6 @@ abstract class ConfigGenerationSuite extends BaseConfigSuite {
         .withProjectDir(buildDirMain)
         .withPluginClasspath(getClasspath)
         .withArguments("bloopInstall", "-Si")
-        .forwardOutput()
         .build()
 
       val projectName = testProjectDir.getRoot.getName