import 'package:uuid/uuid.dart';
import '../../../core/api/api_client.dart';
import 'models/trip_model.dart';
import 'models/stop_model.dart';

const _uuid = Uuid();

/// مستودع الرحلات — يُستخدم من TripBloc.
class TripRepository {
  final ApiClient _api;
  TripRepository(this._api);

  /// GET /trips/mine — استرجاع رحلة نشطة.
  Future<TripModel?> getActiveTrip() async {
    try {
      final r = await _api.dio.get('/trips/mine');
      final data = r.data;
      if (data == null) return null;
      final items = (data['items'] ?? data) as List;
      if (items.isEmpty) return null;
      final trip = TripModel.fromJson(items.first as Map<String, dynamic>);
      final active = ['searching', 'assigned', 'driver_arriving', 'driver_arrived', 'in_progress'];
      return active.contains(trip.status) ? trip : null;
    } catch (_) {
      return null;
    }
  }

  /// GET /trips/:id — جلب رحلة محددة.
  Future<TripModel?> getTrip(String tripId) async {
    try {
      final r = await _api.dio.get('/trips/$tripId');
      return TripModel.fromJson(r.data as Map<String, dynamic>);
    } catch (_) {
      return null;
    }
  }

  /// POST /trips — إنشاء رحلة جديدة.
  Future<TripModel> createTrip({
    required double pickupLat,
    required double pickupLng,
    String? pickupAddress,
    required double dropoffLat,
    required double dropoffLng,
    String? dropoffAddress,
    List<StopModel>? stops,
    required String vehicleClass,
    String paymentMethod = 'cash',
    String? couponCode,
    String? scheduledAt,
  }) async {
    final data = <String, dynamic>{
      'clientId': _uuid.v4(),
      'pickup': {
        'lat': pickupLat,
        'lng': pickupLng,
        if (pickupAddress != null) 'address': pickupAddress,
      },
      'dropoff': {
        'lat': dropoffLat,
        'lng': dropoffLng,
        if (dropoffAddress != null) 'address': dropoffAddress,
      },
      'vehicleClass': vehicleClass,
      'paymentMethod': paymentMethod,
    };
    if (stops != null && stops.isNotEmpty) {
      data['stops'] = stops.map((s) => s.toJson()).toList();
    }
    if (couponCode != null && couponCode.isNotEmpty) {
      data['couponCode'] = couponCode;
    }
    if (scheduledAt != null) data['scheduledAt'] = scheduledAt;

    final r = await _api.dio.post('/trips', data: data);
    return TripModel.fromJson(r.data as Map<String, dynamic>);
  }

  /// POST /trips/:id/cancel — إلغاء الرحلة.
  Future<TripModel> cancelTrip(String tripId) async {
    final r = await _api.dio.post('/trips/$tripId/cancel');
    return TripModel.fromJson(r.data as Map<String, dynamic>);
  }

  /// POST /trips/:id/rate — تقييم الرحلة.
  Future<void> rateTrip(String tripId, {required int stars, String? comment}) async {
    await _api.dio.post('/trips/$tripId/rate', data: {
      'stars': stars,
      if (comment != null && comment.isNotEmpty) 'comment': comment,
    });
  }

  /// GET /trips/rating/pending — هل هناك تقييم معلّق?
  Future<Map<String, dynamic>?> getPendingRating() async {
    try {
      final r = await _api.dio.get('/trips/rating/pending');
      final data = r.data as Map<String, dynamic>;
      if (data['pending'] != null) return data;
      return null;
    } catch (_) {
      return null;
    }
  }
}