import 'package:didvan/models/notification_message.dart';
import 'package:didvan/services/app_home_widget/home_widget_repository.dart';
import 'package:didvan/services/app_initalizer.dart';
import 'package:didvan/services/notification/notification_service.dart';
import 'package:didvan/services/storage/storage.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/foundation.dart';

class FirebaseApi {
  static String? fcmToken;

  Future<void> initNotification() async {
    if (kIsWeb) {
      try {
        bool isSupported = await FirebaseMessaging.instance.isSupported();
        if (!isSupported) {
          if (kDebugMode) {
            print(
                "⚠️ مرورگر از نوتیفیکیشن پشتیبانی نمی‌کند. پروسه نوتیفیکیشن با موفقیت لغو شد تا از کرش جلوگیری شود.");
          }
          return;
        }
      } catch (e) {
        if (kDebugMode) print("Error checking FCM support: $e");
        return;
      }
    }

    try {
      final messaging = FirebaseMessaging.instance;

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

      if (settings.authorizationStatus == AuthorizationStatus.authorized ||
          settings.authorizationStatus == AuthorizationStatus.provisional) {
        if (kIsWeb) {
          fcmToken = await messaging.getToken(
            vapidKey:
                "BMXHGd93t_htpS7c62ceuuLVVmia2cEDmqxp46g9Vt0B3OxNMKIqN9nupsUMtv2Vq8Yy2sQGIqgCm9FxUSKvssU",
          );
        } else {
          fcmToken = await messaging.getToken();
        }

        if (kDebugMode) {
          print("fCMToken: $fcmToken");
        }
      } else {
        if (kDebugMode) {
          print("User declined or has not accepted notification permissions");
        }
      }
    } catch (e) {
      if (kDebugMode) print("Error initializing notifications: $e");
    }

    try {
      final initMsg = await FirebaseMessaging.instance.getInitialMessage();
      if (initMsg != null) {
        if (kDebugMode)
          print("=== APP OPENED FROM NOTIFICATION (TERMINATED) ===");
        NotificationMessage data = NotificationMessage.fromJson(initMsg.data);
        HomeWidgetRepository.data = data;
      }
    } catch (e) {
      if (kDebugMode) print("Error handling initial message: $e");
    }

    FirebaseMessaging.onMessageOpenedApp.listen((initMsg) async {
      try {
        NotificationMessage data = NotificationMessage.fromJson(initMsg.data);
        HomeWidgetRepository.data = data;
        await Future.delayed(const Duration(milliseconds: 300));
        await HomeWidgetRepository.decideWhereToGoNotif();
        await StorageService.delete(
            key: 'notification${AppInitializer.createNotificationId(data)}');
      } catch (e) {
        if (kDebugMode) print("Error handling background message: $e");
      }
    });

    FirebaseMessaging.onMessage.listen((event) => handleMessage(event));
  }

  void handleMessage(RemoteMessage? message) async {
    if (message == null) return;

    try {
      await NotificationService.showFirebaseNotification(message);
    } catch (e) {
      if (kDebugMode) print("Error showing local notification: $e");
    }
  }
}