void initialNotification() {
    var initializationSettingsAndroid =
        AndroidInitializationSettings('@mipmap/ic_launcher');

    var initializationSettingsIOS = IOSInitializationSettings(
        onDidReceiveLocalNotification: onDidReceiveLocalNotification);

    var initializationSettings = InitializationSettings(
      android: initializationSettingsAndroid,
      iOS: initializationSettingsIOS,
    );

    flutterLocalNotificationsPlugin.initialize(initializationSettings,
        onSelectNotification: selectNotification);

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      _notificationController.getNotifications(false);
      print('Got a message whilst in the foreground!');
      print('msg: ${message.notification!.body}');
      print('msg: ${message.data}');

      if (message.notification != null) {
        MainController _mainController = Get.put(MainController());
        print("entro notificacion");

        if (message.data['type'] == 'message' &&
            _mainController.dataWeb.value.chatUserId !=
                int.parse(message.data['userid']))
          showNotification(message.notification!.title,
              message.notification!.body, message.data);
        else if (message.data['type'] != 'message')
          showNotification(message.notification!.title,
              message.notification!.body, message.data);
      }
    });
  }

  Future onDidReceiveLocalNotification(
      int? id, String? title, String? body, String? payload) async {
    print('onDidReceiveLocalNotification');
  }

  Future selectNotification(String? payload) async {
    MainController _mainController = Get.put(MainController());
    var dataPayload = jsonDecode(payload!);

    _mainController.typeNotification.value = dataPayload['type'];

    _mainController.urlWebSite.value = dataPayload['url'];

    if (dataPayload['type'] == 'message')
      _mainController.dataWeb.value.chatUserId =
          int.parse(dataPayload['userid']);
    else
      _mainController.dataWeb.value.chatUserId = 0;

    _mainController.changeRoute();
  }

  void showNotification(title, body, data) async {
    var androidNotificationDetails;

    BigTextStyleInformation bigTextStyleInformation = BigTextStyleInformation(
      body,
      htmlFormatBigText: true,
      contentTitle: title,
      htmlFormatContentTitle: true,
      summaryText: title,
      htmlFormatSummaryText: true,
    );

    if (data['type'] == 'message') {
      var largeIconPath = await _downloadAndSaveFile(
          data['imageUrl'],
          data['username'] +
              '_' +
              DateTime.now().millisecondsSinceEpoch.toString());
      androidNotificationDetails = AndroidNotificationDetails(
        channelID,
        channelName,
        groupKey: groupkeyFCM,
        importance: Importance.defaultImportance,
        priority: Priority.defaultPriority,
        playSound: true,
        largeIcon: FilePathAndroidBitmap(largeIconPath),
        styleInformation: bigTextStyleInformation,
      );
    } else {
      androidNotificationDetails = AndroidNotificationDetails(
        channelID,
        channelName,
        groupKey: groupkeyFCM,
        importance: Importance.defaultImportance,
        priority: Priority.defaultPriority,
        playSound: true,
        styleInformation: bigTextStyleInformation,
      );
    }

    var iOSNotificationDetails = IOSNotificationDetails(
      presentSound: false,
    );

    var platformChannelSpecifics = NotificationDetails(
        android: androidNotificationDetails, iOS: iOSNotificationDetails);
    await flutterLocalNotificationsPlugin.show(
        id, title, body, platformChannelSpecifics,
        payload: jsonEncode(data));

    id = id + 1;

    NotificationDetails groupNotification = getGroupNotifier();
    await flutterLocalNotificationsPlugin.show(
        0, 'test', '$id Notificación', groupNotification);
  }