// fuel_admin_models.dart — نماذج بيانات محفظة الوقود (لوحة إدارة سيرو)

class FuelStation {
  final int id;
  final String nameAr;
  final String? chainName;
  final String? city;
  final String? address;
  final double? lat;
  final double? lng;
  final String? phone;
  final double discountPercent;
  final bool isActive;

  /// ‏أرقام الأداء: محطة بلا صرف اسمٌ في جدول لا شريك يعمل.
  final int redeemCount;
  final double redeemTotal;
  final String? lastRedeemAt;

  FuelStation({
    required this.id,
    required this.nameAr,
    required this.discountPercent,
    required this.isActive,
    this.chainName,
    this.city,
    this.address,
    this.lat,
    this.lng,
    this.phone,
    this.redeemCount = 0,
    this.redeemTotal = 0,
    this.lastRedeemAt,
  });

  factory FuelStation.fromJson(Map<String, dynamic> j) => FuelStation(
        id: int.tryParse(j['id'].toString()) ?? 0,
        nameAr: j['name_ar']?.toString() ?? '',
        chainName: j['chain_name']?.toString(),
        city: j['city']?.toString(),
        address: j['address']?.toString(),
        lat: double.tryParse(j['lat']?.toString() ?? ''),
        lng: double.tryParse(j['lng']?.toString() ?? ''),
        phone: j['phone']?.toString(),
        discountPercent:
            double.tryParse(j['discount_percent']?.toString() ?? '0') ?? 0,
        isActive: j['is_active'] == true,
        redeemCount: int.tryParse(j['redeem_count']?.toString() ?? '0') ?? 0,
        redeemTotal: double.tryParse(j['redeem_total']?.toString() ?? '0') ?? 0,
        lastRedeemAt: j['last_redeem_at']?.toString(),
      );
}

class FuelStationsPage {
  final List<FuelStation> stations;

  /// ‏حالة المنتج نفسه. قرار المالك: تُجهَّز الشاشات ولا يُشغَّل المنتج إلا
  /// ‏بعد إتمام الاتفاق مع سلسلة المحطات — فالشاشة تعمل كاملةً بينما
  /// ‏المنتج مُطفأ، والفرق يجب أن يكون ظاهراً لا مخفياً.
  final bool productActive;

  FuelStationsPage({required this.stations, required this.productActive});

  factory FuelStationsPage.fromJson(Map<String, dynamic> j) => FuelStationsPage(
        stations: (j['stations'] is List)
            ? (j['stations'] as List)
                .map((s) => FuelStation.fromJson(Map<String, dynamic>.from(s)))
                .toList()
            : <FuelStation>[],
        productActive: j['product_active'] == true,
      );
}

class FuelVoucher {
  final int id;
  final String driverId;
  final String code;
  final double amountAuthorized;
  final double amountRedeemed;
  final String currency;
  final String status;
  final String? station;
  final String? redeemedAt;
  final String? createdAt;

  FuelVoucher({
    required this.id,
    required this.driverId,
    required this.code,
    required this.amountAuthorized,
    required this.amountRedeemed,
    required this.currency,
    required this.status,
    this.station,
    this.redeemedAt,
    this.createdAt,
  });

  factory FuelVoucher.fromJson(Map<String, dynamic> j) => FuelVoucher(
        id: int.tryParse(j['id'].toString()) ?? 0,
        driverId: j['driver_id']?.toString() ?? '',
        code: j['code']?.toString() ?? '',
        amountAuthorized:
            double.tryParse(j['amount_authorized']?.toString() ?? '0') ?? 0,
        amountRedeemed:
            double.tryParse(j['amount_redeemed']?.toString() ?? '0') ?? 0,
        currency: j['currency']?.toString() ?? '',
        status: j['status']?.toString() ?? '',
        station: j['station']?.toString(),
        redeemedAt: j['redeemed_at']?.toString(),
        createdAt: j['created_at']?.toString(),
      );
}

class FuelDrawdownsPage {
  final List<FuelVoucher> vouchers;
  final double lentTotal;
  final double collectedTotal;
  final double outstandingTotal;
  final int driversCount;

  FuelDrawdownsPage({
    required this.vouchers,
    required this.lentTotal,
    required this.collectedTotal,
    required this.outstandingTotal,
    required this.driversCount,
  });

  factory FuelDrawdownsPage.fromJson(Map<String, dynamic> j) {
    final s = Map<String, dynamic>.from(j['summary'] ?? {});
    return FuelDrawdownsPage(
      vouchers: (j['vouchers'] is List)
          ? (j['vouchers'] as List)
              .map((v) => FuelVoucher.fromJson(Map<String, dynamic>.from(v)))
              .toList()
          : <FuelVoucher>[],
      lentTotal: double.tryParse(s['lent_total']?.toString() ?? '0') ?? 0,
      collectedTotal:
          double.tryParse(s['collected_total']?.toString() ?? '0') ?? 0,
      outstandingTotal:
          double.tryParse(s['outstanding_total']?.toString() ?? '0') ?? 0,
      driversCount: int.tryParse(s['drivers_count']?.toString() ?? '0') ?? 0,
    );
  }
}