// CONTOH PENGGUNAAN FCM SERVICE
// File ini hanya untuk referensi, tidak perlu diimport ke app

import 'package:apskel_pos_flutter_v2/common/service/fcm_service.dart';
import 'package:apskel_pos_flutter_v2/injection.dart';

/// Contoh 1: Ambil FCM token
Future<void> exampleGetToken() async {
  final fcmService = getIt<FcmService>();
  final token = await fcmService.getToken();
  print('FCM Token: $token');
  
  // Kirim token ke server untuk push notification
  // await apiClient.sendTokenToServer(token);
}

/// Contoh 2: Subscribe ke topic
Future<void> exampleSubscribeToTopic() async {
  final fcmService = getIt<FcmService>();
  
  // Subscribe ke topic "all_users"
  await fcmService.subscribeToTopic('all_users');
  
  // Subscribe ke topic berdasarkan outlet_id
  await fcmService.subscribeToTopic('outlet_123');
}

/// Contoh 3: Unsubscribe dari topic
Future<void> exampleUnsubscribeFromTopic() async {
  final fcmService = getIt<FcmService>();
  
  await fcmService.unsubscribeFromTopic('outlet_123');
}

/// Contoh 4: Gunakan di BLoC
/// 
/// class NotificationBloc extends Bloc<NotificationEvent, NotificationState> {
///   final FcmService _fcmService;
/// 
///   NotificationBloc(this._fcmService) : super(NotificationInitial()) {
///     on<GetFcmToken>(_onGetFcmToken);
///     on<SubscribeToTopic>(_onSubscribeToTopic);
///   }
/// 
///   Future<void> _onGetFcmToken(
///     GetFcmToken event,
///     Emitter<NotificationState> emit,
///   ) async {
///     final token = await _fcmService.getToken();
///     emit(NotificationTokenLoaded(token));
///   }
/// 
///   Future<void> _onSubscribeToTopic(
///     SubscribeToTopic event,
///     Emitter<NotificationState> emit,
///   ) async {
///     await _fcmService.subscribeToTopic(event.topic);
///     emit(NotificationTopicSubscribed(event.topic));
///   }
/// }

/// Contoh 5: Gunakan di Repository
/// 
/// @LazySingleton(as: IAuthRepository)
/// class AuthRepository implements IAuthRepository {
///   final FcmService _fcmService;
///   final ApiClient _apiClient;
/// 
///   AuthRepository(this._fcmService, this._apiClient);
/// 
///   @override
///   Future<Either<Failure, User>> login(String email, String password) async {
///     try {
///       final response = await _apiClient.login(email, password);
///       
///       // Kirim FCM token ke server setelah login berhasil
///       final fcmToken = await _fcmService.getToken();
///       if (fcmToken != null) {
///         await _apiClient.updateFcmToken(fcmToken);
///       }
///       
///       return Right(response);
///     } catch (e) {
///       return Left(ServerFailure(e.toString()));
///     }
///   }
/// }