didvan-app/lib/services/notification/fcm/firebase_notification_handler.dart

import 'package:didvan/services/notification/awsome/awsome_notification_handler.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';

import '../../app_initalizer.dart';

class FirebaseNotificationHandler {
  Future<void> initial() async {
    try {
      WidgetsFlutterBinding.ensureInitialized();

      await Firebase.initializeApp(
        options: kIsWeb
            ? const FirebaseOptions(
                apiKey: "AIzaSyA0HZjKpRuPOi1SC3f_EZTvlS3mcj9UVo0",
                authDomain: "didvan-9b7da.firebaseapp.com",
                projectId: "didvan-9b7da",
                storageBucket: "didvan-9b7da.appspot.com",
                messagingSenderId: "935017686266",
                appId: "1:935017686266:web:a93f7a19bed23c51d2d543",
                measurementId: "G-80B4H9E8Y0")
            : const FirebaseOptions(
                apiKey: 'AIzaSyBp-UHjWeM0H0UHtX5yguFKG-riMzvvCzw',
                appId: '1:935017686266:android:f9cbc9aba8e3d65ed2d543',
                messagingSenderId: '935017686266',
                projectId: 'didvan-9b7da',
              ),
      );
      final initMsg = await FirebaseMessaging.instance.getInitialMessage();
      if (initMsg != null) {
        AppInitializer.clickAction = initMsg.data['click_action'].replaceAll(
          'navigate-',
          '',
        );
      }

      // LocalNotificationService.initialize();

      NotificationSettings settings =
          await FirebaseMessaging.instance.requestPermission(
        alert: true,
        announcement: false,
        badge: true,
        carPlay: false,
        criticalAlert: false,
        provisional: false,
        sound: true,
      );

      debugPrint(
          'User granted notifications permission: ${settings.authorizationStatus}');

      // Handling background messages using the specified handler
      // FirebaseMessaging.onBackgroundMessage(
      //     _firebaseMessagingBackgroundHandler);

      // Listening for incoming messages while the app is in the foreground
      FirebaseMessaging.onMessage.listen((RemoteMessage message) {
        if (message.data != null) {
/*        if (message.notification!.title != null &&
            message.notification!.body != null) {
          final notificationData = message.data;
          final screen = notificationData['screen'];

          // Showing an alert dialog when a notification is received (Foreground state)
          // showDialog(
          //   context: context,
          //   barrierDismissible: false,
          //   builder: (BuildContext context) {
          //     return WillPopScope(
          //       onWillPop: () async => false,
          //       child: AlertDialog(
          //         title: Text(message.notification!.title!),
          //         content: Text(message.notification!.body!),
          //         actions: [
          //           if (notificationData.containsKey('screen'))
          //             TextButton(
          //               onPressed: () {
          //                 Navigator.pop(context);
          //                 Navigator.of(context).pushNamed(screen);
          //               },
          //               child: const Text('Open Screen'),
          //             ),
          //           TextButton(
          //             onPressed: () => Navigator.of(context).pop(),
          //             child: const Text('Dismiss'),
          //           ),
          //         ],
          //       ),
          //     );
          //   },
          // );
        }*/
          // LocalNotificationService.initialize();
          // LocalNotificationService.showBigPictureNotification();
          // LocalNotificationService.display(message);
          AwsomeNotificationHandler().main();
          AwsomeNotificationHandler().show(message);
        }
      });

      // Handling the initial message received when the app is launched from dead (killed state)
      // When the app is killed and a new notification arrives when user clicks on it
      // It gets the data to which screen to open
      FirebaseMessaging.instance.getInitialMessage().then((message) {
        if (message != null) {
          _handleNotificationClick(message);
        }
      });

      // Handling a notification click event when the app is in the background
      FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
        _handleNotificationClick(message);
      });
    } catch (e) {
      print(e.toString());
    }
  }

  // Handling a notification click event by navigating to the specified screen
  void _handleNotificationClick(RemoteMessage message) {
    final notificationData = message.data;

    if (notificationData.containsKey('screen')) {
      final screen = notificationData['screen'];
      // Navigator.of(context).pushNamed(screen);
    }
  }
}

// Handler for background messages
// @pragma('vm:entry-point')
// Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
//   await Firebase.initializeApp(
//     options: kIsWeb
//         ? const FirebaseOptions(
//             apiKey: "AIzaSyA0HZjKpRuPOi1SC3f_EZTvlS3mcj9UVo0",
//             authDomain: "didvan-9b7da.firebaseapp.com",
//             projectId: "didvan-9b7da",
//             storageBucket: "didvan-9b7da.appspot.com",
//             messagingSenderId: "935017686266",
//             appId: "1:935017686266:web:a93f7a19bed23c51d2d543",
//             measurementId: "G-80B4H9E8Y0")
//         : const FirebaseOptions(
//             apiKey: 'AIzaSyBp-UHjWeM0H0UHtX5yguFKG-riMzvvCzw',
//             appId: '1:935017686266:android:f9cbc9aba8e3d65ed2d543',
//             messagingSenderId: '935017686266',
//             projectId: 'didvan-9b7da',
//           ),
//   );
//
//   LocalNotificationService.initialize();
//   LocalNotificationService.display(message);
//   // AwsomeNotificationHandler().main();
//   // AwsomeNotificationHandler().show(message);
//
//   return Future<void>.value();
// }