Add unitypackage artifact (#37)

* Resolve #36

src/main/groovy/wooga/gradle/unity/UnityPlugin.groovy

@@ -40,6 +40,7 @@ import wooga.gradle.unity.tasks.Activate
 import wooga.gradle.unity.tasks.ReturnLicense
 import wooga.gradle.unity.tasks.Test
 import wooga.gradle.unity.tasks.UnityPackage
+import wooga.gradle.unity.tasks.UnityPackageArtifact
 import wooga.gradle.unity.tasks.internal.AbstractUnityProjectTask
 import wooga.gradle.unity.tasks.internal.AbstractUnityTask
 
@@ -121,11 +122,11 @@ class UnityPlugin implements Plugin<Project> {
         final BasePluginConvention basePluginConvention = new BasePluginConvention(project)
 
         configureUnityExtensionConvention(project, unityExtension)
+        createUnityPackageConfiguration(project)
         configureUnityTasks(project, unityExtension)
         addTestTasks(project, unityExtension)
         addPackageTask(project)
         addActivateAndReturnLicenseTasks(project, unityExtension)
-        createUnityPackageConfiguration(project)
         addDefaultReportTasks(project, unityExtension)
         configureArchiveDefaults(project, basePluginConvention)
 
@@ -242,6 +243,7 @@ class UnityPlugin implements Plugin<Project> {
     }
 
     private static void configureArchiveDefaults(final Project project, final BasePluginConvention pluginConvention) {
+        def configuration = project.configurations.getByName(UNITY_PACKAGE_CONFIGURATION_NAME)
         project.getTasks().withType(UnityPackage.class, new Action<UnityPackage>() {
             void execute(UnityPackage task) {
                 ConventionMapping taskConventionMapping = task.getConventionMapping()
@@ -265,7 +267,8 @@ class UnityPlugin implements Plugin<Project> {
                     }
                 })
 
-                project.artifacts.add(UNITY_PACKAGE_CONFIGURATION_NAME, [file: task.archivePath, builtBy: task])
+                UnityPackageArtifact artifact = UnityPackageArtifact.fromTask(task)
+                configuration.getArtifacts().add(artifact)
             }
         })
     }

src/main/groovy/wooga/gradle/unity/tasks/UnityPackageArtifact.groovy

@@ -0,0 +1,58 @@
+package wooga.gradle.unity.tasks
+
+import org.gradle.api.artifacts.PublishArtifact
+import org.gradle.api.internal.tasks.DefaultTaskDependency
+import org.gradle.api.internal.tasks.TaskResolver
+import org.gradle.api.tasks.TaskDependency
+
+class UnityPackageArtifact implements PublishArtifact {
+
+
+    @Override
+    String getName() {
+        return task.getArchiveName().split(".${UnityPackage.UNITY_PACKAGE_EXTENSION}")[0]
+    }
+
+    @Override
+    String getExtension() {
+        return UnityPackage.UNITY_PACKAGE_EXTENSION
+    }
+
+    @Override
+    String getType() {
+        return "zip"
+    }
+
+    @Override
+    String getClassifier() {
+        return null
+    }
+
+    @Override
+    File getFile() {
+        return this.task.getArchivePath()
+    }
+
+    @Override
+    Date getDate() {
+        return null
+    }
+
+    def taskDependency
+
+    @Override
+    TaskDependency getBuildDependencies() {
+        taskDependency
+    }
+    private UnityPackage task
+
+    static PublishArtifact fromTask(UnityPackage task) {
+        new UnityPackageArtifact(task)
+    }
+
+    UnityPackageArtifact(UnityPackage task) {
+        this.task = task
+        taskDependency = new DefaultTaskDependency(task.project.tasks as TaskResolver)
+        taskDependency.add(task)
+    }
+}