add build flag on production

- a resource that when present, signals that we are in production. delete after build.

cli/coffee/build.go

@@ -47,6 +47,13 @@ func Build() {
 		return
 	}
 
+	log.Info("Preparing for bundle")
+	_, err = os.Create("src/main/resources/__jar__")
+	if err != nil {
+		log.Errorf("Unexpected error: production flag was not able to set. %v", err)
+		return
+	}
+
 	_, err = RunCommand(CmdProps{
 		Cmd:       BundleApp,
 		LogBefore: "Bundling to JAR",
@@ -57,5 +64,13 @@ func Build() {
 		log.Errorf("Failed to build app into JAR. %v", err)
 		return
 	}
+
+	log.Info("Post bundle cleanup")
+	err = os.Remove("src/main/resources/__jar__")
+	if err != nil {
+		log.Errorf("Unexpected error: was not able to delete temporary production flag. %v", err)
+		return
+	}
+
 	log.Info("Done. your JAR is located at `./target")
 }

src/main/kotlin/org/levi/coffee/Window.kt

@@ -19,11 +19,12 @@ import kotlin.system.exitProcess
 class Window(val args: Array<String>) {
     private val log: Logger = LoggerFactory.getLogger(this::class.java)
     private val _beforeStartCallbacks: MutableList<Runnable> = ArrayList()
-    private val dev = Thread.currentThread().contextClassLoader.getResource("__jar__") == null
     private val _onCloseCallbacks: MutableList<Runnable> = ArrayList()
     private val _bindObjects = ArrayList<Any>()
     private val _webviewInitFunctions: MutableList<(wv: Webview) -> Unit> = ArrayList()
 
+    private val dev = Thread.currentThread().contextClassLoader.getResource("__jar__") == null
+
     fun setURL(url: String) {
         _webviewInitFunctions.add { it.loadURL(url) }
     }