import 'package:dio/dio.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:relationship_saver/core/auth/secure_token_store.dart';
import 'package:relationship_saver/core/auth/token_store.dart';
import 'package:relationship_saver/core/config/app_config.dart';
import 'package:relationship_saver/core/network/dio_factory.dart';
import 'package:relationship_saver/integrations/backend/backend_gateway.dart';
import 'package:relationship_saver/integrations/backend/backend_gateway_fake.dart';
import 'package:relationship_saver/integrations/backend/backend_gateway_rest.dart';

/// Provides token storage implementation.
final Provider<TokenStore> tokenStoreProvider = Provider<TokenStore>((Ref ref) {
  return SecureTokenStore();
});

/// Provides configured Dio client for backend transport.
final Provider<Dio> backendDioProvider = Provider<Dio>((Ref ref) {
  final TokenStore tokenStore = ref.watch(tokenStoreProvider);
  return DioFactory.create(
    baseUrl: AppConfig.backendBaseUrl,
    tokenStore: tokenStore,
  );
});

/// Provides backend gateway implementation.
final Provider<BackendGateway> backendGatewayProvider =
    Provider<BackendGateway>((Ref ref) {
      if (AppConfig.useFakeBackend) {
        return BackendGatewayFake();
      }

      return BackendGatewayRest(
        dio: ref.watch(backendDioProvider),
        tokenStore: ref.watch(tokenStoreProvider),
      );
    });