@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {

    let controller : FlutterViewController = self.window?.rootViewController as! FlutterViewController
    let scannerChannel = FlutterMethodChannel(name: "scanner_activity",
                                              binaryMessenger: controller.binaryMessenger)
    scannerChannel.setMethodCallHandler({
      (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
        switch(call.method){
        case "startNewActivity":
            let mainStoryBoard = UIStoryboard(name: "Main", bundle: nil)
            let flutterViewController = mainStoryBoard.instantiateViewController(withIdentifier: "FlutterViewController")as! FlutterViewController
            self.window?.rootViewController = flutterViewController

            controller.navigationController?.pushViewController(ScannerViewController(), animated: true)
            break
        default:
            return
        }
    })

    FirebaseApp.configure()
    GeneratedPluginRegistrant.register(with: self)

    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}