ftc_patient_app/lib/utilities/fcm_notifications.dart

import 'dart:convert';
import 'dart:developer';
import 'dart:io';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/foundation.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter_app_badger/flutter_app_badger.dart';
import 'notification_util.dart';
import 'package:get/get.dart';
import 'extensions/custom_extensions.dart';

class FcmNotification {
  static FcmNotification? _instance;

  static FcmNotification getInstance() {
    _instance ??= FcmNotification();
    return _instance!;
  }

  init() async {
    FirebaseMessaging.onBackgroundMessage(firebaseMessagingBackgroundHandler);
    await Firebase.initializeApp();
    _firebaseCloudMessagingListeners();
  }

  Future<void> _firebaseCloudMessagingListeners() async {
    // ios permission
    if (Platform.isIOS) iOSPermission();
    await FirebaseMessaging.instance
        .setForegroundNotificationPresentationOptions(
      alert: false, // Required to display a heads up notification
      badge: true,
      sound: true,
    );
    //foreground message
    FirebaseMessaging.onMessage.listen((RemoteMessage remoteMessage) async {
      // RemoteNotification notificationData = remoteMessage.notification;

      if (kDebugMode) log("new message received: ${remoteMessage.data}");

      incrementNotificationCount();

      // final data = Notifications.fromJson(remoteMessage.data);

      // if (Get.currentRoute == AppRoute.individualChatScreen &&
      //     data.contentType == notificationContentTypeMessage) return;

      if (Platform.isAndroid) {
        NotificationUtils.showDefaultNotification(
          title: "${remoteMessage.notification?.title}",
          body: '${remoteMessage.notification?.body}',
          payload: remoteMessage.data,
        );
      }
    });
    // Also handle any interaction when the app is in the background via a
    // Stream listener
    FirebaseMessaging.onMessageOpenedApp.listen(
      (RemoteMessage? remoteMessage) async {
        if (remoteMessage != null) {
          handleAppNotification(remoteMessage.data);
        }
      },
    );
  }

  Future<void> iOSPermission() async {
    NotificationSettings settings =
        await FirebaseMessaging.instance.requestPermission(
      alert: true,
      announcement: false,
      badge: true,
      carPlay: false,
      criticalAlert: false,
      provisional: false,
      sound: true,
    );
    debugPrint('User granted permission: ${settings.authorizationStatus}');
  }

  void selectNotification(String? payload) async {
    debugPrint('selected notification payload: $payload');

    if (payload != null) {
      var messageData = jsonDecode(payload);
      handleAppNotification(messageData);
    }
  }
}

handleAppNotification(Map<String, dynamic> payload) {
  if (kDebugMode) {
    log("Handle App Notification: $payload");
  }
  // onNotificationTap(Notifications.fromJson(payload));
}

// onNotificationTap(Notifications notification) {
//   if (TradePersonNotificationContentTypes.toOpenJobDetailPage
//       .contains(notification.contentType)) {
//     _gotoJobDetailScreen(notification.content);
//   } else if (ClientNotificationContentTypes.toOpenJobDetailPage
//       .contains(notification.contentType)) {
//     if (notification.content == null) {
//       debugPrint("content null");
//       return;
//     }
//
//     final id = JobDetail.fromJson(notification.content!).id;
//     if (id.isNullOrEmpty()) {
//       debugPrint("job id missing");
//       return;
//     }
//     AppRoute.toJobDetailScreen(args: JobDetailScreenArgs(jobId: id));
//   } else if (notification.contentType == notificationContentTypeMessage) {
//     if (notification.content == null) {
//       debugPrint("content null");
//       return;
//     }
//     final message = ChatModel.fromJson(notification.content);
//     AppRoute.toIndividualChatScreen(
//       arguments: IndividualChatScreenArgs(
//         otherUserId: message.sentBy!.id!,
//         name: message.sentBy!.fullname ?? emptyString,
//         profilePicPath: message.sentBy!.profilePic ?? emptyString,
//         otherUserType: message.sentBy!.userType!,
//         onLastMessageUpdate: (ChatModel message) {},
//       ),
//     );
//   }
// }

incrementNotificationCount() async {
  //Todo
  // try {
  // final appProviderController = AppProviderController.instance;
  // appProviderController.notiCountUp();
  // if (await FlutterAppBadger.isAppBadgeSupported()) {
  //   FlutterAppBadger.updateBadgeCount(
  //       appProviderController.notificationCount());
  // }
  // } catch (e) {
  //   debugPrint(e.toString());
  // }
}

Future<void> firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  debugPrint("Handling a background message: ${message.data}, ${message.ttl}");
  incrementNotificationCount();
}