From 571815bbd506a026a58c524b3437e09e8f68c8fc Mon Sep 17 00:00:00 2001
From: Alva Swanson <alvasw@protonmail.com>
Date: Sun, 10 Sep 2023 20:24:52 +0200
Subject: [PATCH] Implement AppStartPlugin

---
 build-logic/app-start-plugin/build.gradle     | 17 +++++++
 .../gradle/app_start_plugin/AppStartPlugin.kt | 49 +++++++++++++++++++
 build-logic/settings.gradle                   |  1 +
 3 files changed, 67 insertions(+)
 create mode 100644 build-logic/app-start-plugin/build.gradle
 create mode 100644 build-logic/app-start-plugin/src/main/kotlin/bisq/gradle/app_start_plugin/AppStartPlugin.kt

diff --git a/build-logic/app-start-plugin/build.gradle b/build-logic/app-start-plugin/build.gradle
new file mode 100644
index 00000000000..15b43f6ec0b
--- /dev/null
+++ b/build-logic/app-start-plugin/build.gradle
@@ -0,0 +1,17 @@
+plugins {
+    id 'org.jetbrains.kotlin.jvm' version '1.7.10'
+    id 'org.gradle.kotlin.kotlin-dsl' version '2.4.1'
+}
+
+repositories {
+    mavenCentral()
+}
+
+gradlePlugin {
+    plugins {
+        simplePlugin {
+            id = 'bisq.gradle.app_start_plugin.AppStartPlugin'
+            implementationClass = 'bisq.gradle.app_start_plugin.AppStartPlugin'
+        }
+    }
+}
diff --git a/build-logic/app-start-plugin/src/main/kotlin/bisq/gradle/app_start_plugin/AppStartPlugin.kt b/build-logic/app-start-plugin/src/main/kotlin/bisq/gradle/app_start_plugin/AppStartPlugin.kt
new file mode 100644
index 00000000000..16e616a427d
--- /dev/null
+++ b/build-logic/app-start-plugin/src/main/kotlin/bisq/gradle/app_start_plugin/AppStartPlugin.kt
@@ -0,0 +1,49 @@
+package bisq.gradle.app_start_plugin
+
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.api.plugins.JavaApplication
+import org.gradle.api.plugins.JavaPluginExtension
+import org.gradle.api.provider.Provider
+import org.gradle.api.tasks.JavaExec
+import org.gradle.api.tasks.Sync
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.jvm.toolchain.*
+import org.gradle.kotlin.dsl.findByType
+import org.gradle.kotlin.dsl.register
+import java.io.File
+import javax.inject.Inject
+
+class AppStartPlugin @Inject constructor(private val javaToolchainService: JavaToolchainService) : Plugin<Project> {
+
+    override fun apply(project: Project) {
+        val installDistTask: TaskProvider<Sync> = project.tasks.named("installDist", Sync::class.java)
+
+        val javaApplicationExtension = project.extensions.findByType<JavaApplication>()
+        checkNotNull(javaApplicationExtension) { "Can't find JavaApplication extension." }
+
+        project.tasks.register<JavaExec>("startBisqApp") {
+            dependsOn(installDistTask)
+            javaLauncher.set(getJavaLauncher(project))
+
+            classpath = installDistTask.map {
+                val appLibsDir = File(it.destinationDir, "lib")
+                val allFiles = appLibsDir.listFiles()
+                project.files(allFiles)
+            }.get()
+
+            jvmArgs.addAll(javaApplicationExtension.applicationDefaultJvmArgs)
+
+            workingDir = project.projectDir.parentFile
+            mainClass.set(javaApplicationExtension.mainClass)
+        }
+    }
+
+    private fun getJavaLauncher(project: Project): Provider<JavaLauncher> {
+        val javaExtension = project.extensions.findByType<JavaPluginExtension>()
+        checkNotNull(javaExtension) { "Can't find JavaPluginExtension extension." }
+
+        val toolchain = javaExtension.toolchain
+        return javaToolchainService.launcherFor(toolchain)
+    }
+}
diff --git a/build-logic/settings.gradle b/build-logic/settings.gradle
index 2b47bf62ab9..dcdcd20fe24 100644
--- a/build-logic/settings.gradle
+++ b/build-logic/settings.gradle
@@ -6,6 +6,7 @@ dependencyResolutionManagement {
     }
 }
 
+include 'app-start-plugin'
 include 'commons'
 include 'gradle-tasks'
 include 'packaging'