flutter_app_android/lib/injection_container.dart

import 'package:get_it/get_it.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:http/http.dart' as http;
import 'data/datasources/local/shared_prefs.dart';
import 'data/datasources/remote/api_client.dart';
import 'data/repositories/auth_repository.dart';
import 'data/repositories/user_repository.dart';
import 'presentation/providers/auth_provider.dart';
import 'presentation/providers/user_provider.dart';

final GetIt sl = GetIt.instance;

Future<void> init() async {
  // External dependencies
  final sharedPreferences = await SharedPreferences.getInstance();
  sl.registerLazySingleton(() => sharedPreferences);
  
  // HTTP Client
  sl.registerLazySingleton(() => http.Client());
  
  // Data sources
  sl.registerLazySingleton(() => SharedPrefs(sl()));
  sl.registerLazySingleton(() => ApiClient(sl()));
  
  // Repositories
  sl.registerLazySingleton(() => AuthRepository(
    apiClient: sl(),
    prefs: sl(),
  ));
  sl.registerLazySingleton(() => UserRepository(
    apiClient: sl(),
  ));
  
  // Providers
  sl.registerFactory(() => AuthProvider(authRepository: sl()));
  sl.registerFactory(() => UserProvider(userRepository: sl()));
}