// transit_driver_service.dart — طبقة الاتصال بـ backend/transit (جهة سائق الباص)
import '../functions/crud.dart';
import '../../constant/links.dart';
import 'transit_driver_models.dart';

class TransitApiResult<T> {
  final bool success;
  final T? data;
  final String message;
  TransitApiResult(this.success, this.data, this.message);
}

class TransitDriverService {
  static String get _base => '${AppLink.server}/transit';

  static String _errMsg(dynamic res) {
    if (res == 'no_internet') return 'تحقق من اتصالك بالإنترنت';
    if (res == 'token_expired') return 'انتهت الجلسة، حاول مجدداً';
    if (res is Map && res['message'] is String) return res['message'];
    return 'حدث خطأ، حاول مجدداً';
  }

  /// هل هذا الحساب سائق باص، وما معرّفه في مواصلاتي؟
  static Future<TransitApiResult<Map<String, dynamic>>> checkIsBusDriver() async {
    final res = await CRUD().post(link: '$_base/driver/me.php');
    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      return TransitApiResult(true, Map<String, dynamic>.from(res['message']), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  /// تفعيل حساب السائق بتوكن الدعوة (بعد IDOR fix لا نحتاج driver_transit_id)
  static Future<TransitApiResult<Map<String, dynamic>>> activateByInviteToken(
      String inviteToken) async {
    final res = await CRUD().post(
      link: '$_base/driver/activate_by_app.php',
      payload: {'invite_token': inviteToken},
    );
    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      return TransitApiResult(
          true, Map<String, dynamic>.from(res['message']), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  /// رحلات اليوم — الخادم يجلب السائق من JWT، لا نمرر driver_transit_id
  static Future<TransitApiResult<List<TransitDriverTrip>>> getTodayTrips() async {
    final res = await CRUD().post(link: '$_base/trip/today.php');
    if (res is Map && res['status'] == 'success' && res['message'] is Map) {
      final msg = res['message'] as Map;
      final list = (msg['trips'] is List)
          ? (msg['trips'] as List)
              .map((t) => TransitDriverTrip.fromJson(Map<String, dynamic>.from(t)))
              .toList()
          : <TransitDriverTrip>[];
      return TransitApiResult(true, list, 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<Map<String, dynamic>>> startTrip({
    required int tripId,
    required double lat,
    required double lng,
  }) async {
    final res = await CRUD().post(
      link: '$_base/trip/start.php',
      payload: {
        'trip_id': tripId.toString(),
        'lat': lat.toString(),
        'lng': lng.toString(),
      },
    );
    if (res is Map && res['status'] == 'success') {
      return TransitApiResult(true, Map<String, dynamic>.from(res['message'] ?? {}), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<Map<String, dynamic>>> endTrip({
    required int tripId,
  }) async {
    final res = await CRUD().post(
      link: '$_base/trip/end.php',
      payload: {'trip_id': tripId.toString()},
    );
    if (res is Map && res['status'] == 'success') {
      return TransitApiResult(true, Map<String, dynamic>.from(res['message'] ?? {}), 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }

  static Future<TransitApiResult<void>> reportDelay({
    required int tripId,
    required int delayMinutes,
    String? reason,
  }) async {
    final res = await CRUD().post(
      link: '$_base/trip/delay.php',
      payload: {
        'trip_id': tripId.toString(),
        'delay_minutes': delayMinutes.toString(),
        if (reason != null) 'reason': reason,
      },
    );
    if (res is Map && res['status'] == 'success') {
      return TransitApiResult(true, null, 'ok');
    }
    return TransitApiResult(false, null, _errMsg(res));
  }
}