Extract out shellscript task

app/build.gradle.kts

@@ -1,14 +1,3 @@
-/*
- * This file was generated by the Gradle 'init' task.
- *
- * This generated file contains a sample Java application project to get you started.
- * For more details on building Java & JVM projects, please refer
- * to https://docs.gradle.org/8.14/userguide/building_java_projects.html in the Gradle documentation.
- */
-
-import org.gradle.api.tasks.TaskAction
-import org.gradle.api.DefaultTask
-
 plugins {
     // Apply the application plugin to add support for building a CLI application in Java.
     application
@@ -70,29 +59,15 @@ tasks.jar {
     duplicatesStrategy = DuplicatesStrategy.EXCLUDE
 }
 
-// Custom task to create a shell script wrapper compatible with bash and zsh
-abstract class CreateShellScriptTask : DefaultTask() {
-    @get:OutputFile
-    abstract val outputFile: Property<File>
-
-    @TaskAction
-    fun createScript() {
-        outputFile.get().writeText(
-            """
-    |#!/bin/sh
-    |DIR="$(cd "$(dirname "$0")" && pwd)"
-    |exec java -jar "${'$'}DIR/bounding-box.jar" "${'$'}@"
-    """.trimMargin()
-        )
-        outputFile.get().setExecutable(true)
-    }
+tasks.register<CreateShellScriptTask>("createShellScript") {
+    outputFile.set(layout.buildDirectory.file("libs/bounding-box"))
+    outputs.upToDateWhen { false }
 }
 
-tasks.register<CreateShellScriptTask>("createShellScript") {
-    outputFile.set(layout.buildDirectory.file("libs/bounding-box").map { it.asFile })
+tasks.named("createShellScript") {
+    mustRunAfter("test")
 }
 
-// Ensure the shell script is created after the JAR
 tasks.build {
     dependsOn("createShellScript")
 }

buildSrc/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    mavenCentral()
+}

buildSrc/src/main/kotlin/CreateShellScriptTask.kt

@@ -0,0 +1,24 @@
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.RegularFileProperty
+import org.gradle.api.tasks.OutputFile
+import org.gradle.api.tasks.TaskAction
+import java.io.File
+
+abstract class CreateShellScriptTask : DefaultTask() {
+    @get:OutputFile
+    abstract val outputFile: RegularFileProperty
+
+    @TaskAction
+    fun createScript() {
+        val file = outputFile.get().asFile
+        file.writeText(
+            """
+            |#!/bin/sh
+            |DIR="$(cd "$(dirname "$0")" && pwd)"
+            |exec java -jar "${'$'}DIR/bounding-box.jar" "${'$'}@"
+            """.trimMargin()
+        )
+        file.setExecutable(true)
+        logger.lifecycle("Shell script created at: ${file.absolutePath}")
+    }
+}