// food_delivery_models.dart — نماذج بيانات وحدة التوصيل (جهة السائق)

int _int(dynamic v) => int.tryParse(v?.toString() ?? '') ?? 0;
double? _doubleOrNull(dynamic v) => double.tryParse(v?.toString() ?? '');
double _double(dynamic v) => double.tryParse(v?.toString() ?? '') ?? 0;
DateTime? _date(dynamic v) => DateTime.tryParse(v?.toString() ?? '');

class FoodDeliveryTask {
  final int id;
  final String status; // courier_assigned | picked_up
  final int merchantId;
  final String merchantNameAr;
  final double? merchantLat;
  final double? merchantLng;
  final String? merchantAddress;
  final int deliveryFee;
  final int itemsTotal;
  final int serviceFee;
  final int discount;
  final int grandTotal;
  final String paymentMethod; // wallet | cash
  final int cashToCollect;
  final int courierOwes;
  final int itemsCount;
  final String? customerNote;
  final String? deliveryAddress;
  final double deliveryLat;
  final double deliveryLng;
  final DateTime? createdAt;
  final DateTime? readyAt;
  final DateTime? courierAssignedAt;
  final DateTime? pickedUpAt;

  FoodDeliveryTask({
    required this.id,
    required this.status,
    required this.merchantId,
    required this.merchantNameAr,
    required this.deliveryFee,
    required this.deliveryLat,
    required this.deliveryLng,
    this.itemsTotal = 0,
    this.serviceFee = 0,
    this.discount = 0,
    this.grandTotal = 0,
    this.paymentMethod = 'wallet',
    this.cashToCollect = 0,
    this.courierOwes = 0,
    this.itemsCount = 0,
    this.customerNote,
    this.merchantLat,
    this.merchantLng,
    this.merchantAddress,
    this.deliveryAddress,
    this.createdAt,
    this.readyAt,
    this.courierAssignedAt,
    this.pickedUpAt,
  });

  bool get isPickedUp => status == 'picked_up';
  bool get isCash => paymentMethod == 'cash';

  factory FoodDeliveryTask.fromJson(Map<String, dynamic> j) => FoodDeliveryTask(
        id: _int(j['id']),
        status: j['status']?.toString() ?? '',
        merchantId: _int(j['merchant_id']),
        merchantNameAr: j['merchant_name_ar']?.toString() ?? '',
        merchantLat: _doubleOrNull(j['merchant_lat']),
        merchantLng: _doubleOrNull(j['merchant_lng']),
        merchantAddress: j['merchant_address']?.toString(),
        deliveryFee: _int(j['delivery_fee']),
        itemsTotal: _int(j['items_total']),
        serviceFee: _int(j['service_fee']),
        discount: _int(j['discount']),
        grandTotal: _int(j['grand_total']),
        paymentMethod: j['payment_method']?.toString() ?? 'wallet',
        cashToCollect: _int(j['cash_to_collect']),
        courierOwes: _int(j['courier_owes']),
        itemsCount: _int(j['items_count']),
        customerNote: j['customer_note']?.toString(),
        deliveryAddress: j['delivery_address']?.toString(),
        deliveryLat: _double(j['delivery_lat']),
        deliveryLng: _double(j['delivery_lng']),
        createdAt: _date(j['created_at']),
        readyAt: _date(j['ready_at']),
        courierAssignedAt: _date(j['courier_assigned_at']),
        pickedUpAt: _date(j['picked_up_at']),
      );
}

// عرض توصيل وارد — يصل عبر سوكيت الطعام ('food_delivery_offer') وبنفس الحقول
// من courier/pending_offers.php عند انقطاع السوكيت (foodBuildCourierOfferPayload).
class FoodDeliveryOffer {
  final int orderId;
  final int merchantId;
  final String merchantNameAr;
  final String? merchantAddress;
  final double? merchantLat;
  final double? merchantLng;
  final double deliveryLat;
  final double deliveryLng;
  final int deliveryFee;
  final int itemsCount;
  final String paymentMethod;
  final int cashToCollect;
  final int ttlSeconds;
  final DateTime receivedAt;
  final DateTime? offeredAt;

  FoodDeliveryOffer({
    required this.orderId,
    required this.merchantId,
    required this.merchantNameAr,
    required this.deliveryFee,
    this.merchantAddress,
    this.merchantLat,
    this.merchantLng,
    this.deliveryLat = 0,
    this.deliveryLng = 0,
    this.itemsCount = 0,
    this.paymentMethod = 'wallet',
    this.cashToCollect = 0,
    this.ttlSeconds = 20,
    DateTime? receivedAt,
    this.offeredAt,
  }) : receivedAt = receivedAt ?? DateTime.now();

  bool get isCash => paymentMethod == 'cash';

  factory FoodDeliveryOffer.fromJson(Map<String, dynamic> j) => FoodDeliveryOffer(
        orderId: _int(j['order_id']),
        merchantId: _int(j['merchant_id']),
        merchantNameAr: j['merchant_name_ar']?.toString() ?? '',
        merchantAddress: j['merchant_address']?.toString(),
        merchantLat: _doubleOrNull(j['merchant_lat']),
        merchantLng: _doubleOrNull(j['merchant_lng']),
        deliveryLat: _double(j['delivery_lat']),
        deliveryLng: _double(j['delivery_lng']),
        deliveryFee: _int(j['delivery_fee']),
        itemsCount: _int(j['items_count']),
        paymentMethod: j['payment_method']?.toString() ?? 'wallet',
        cashToCollect: _int(j['cash_to_collect']),
        ttlSeconds: _int(j['offer_ttl_seconds']) == 0 ? 20 : _int(j['offer_ttl_seconds']),
        offeredAt: _date(j['offered_at']),
      );

  // العدّاد للعرض فقط — الخادم هو الحكم الفعلي ويرفض offer_respond بعد المهلة.
  // نبدأ من offered_at إن جاءت (مسار polling)، وإلا من لحظة الاستلام (مسار السوكيت).
  int get secondsRemaining {
    final start = offeredAt ?? receivedAt;
    final elapsed = DateTime.now().difference(start).inSeconds;
    return (ttlSeconds - elapsed).clamp(0, ttlSeconds);
  }

  bool get isExpired => secondsRemaining <= 0;
}

// صنف داخل الطلب — يراه السائق ليتأكد من محتوى الكيس عند الاستلام من المطعم
class FoodOrderItem {
  final String nameAr;
  final int quantity;
  final int unitPrice;
  final int lineTotal;

  FoodOrderItem({
    required this.nameAr,
    required this.quantity,
    required this.unitPrice,
    required this.lineTotal,
  });

  factory FoodOrderItem.fromJson(Map<String, dynamic> j) => FoodOrderItem(
        nameAr: j['name_ar']?.toString() ?? '',
        quantity: _int(j['quantity']),
        unitPrice: _int(j['unit_price']),
        lineTotal: _int(j['line_total']),
      );
}

class FoodOrderDetails {
  final FoodDeliveryTask task;
  final List<FoodOrderItem> items;
  final String? merchantPhone;

  FoodOrderDetails({required this.task, required this.items, this.merchantPhone});

  factory FoodOrderDetails.fromJson(Map<String, dynamic> j) => FoodOrderDetails(
        task: FoodDeliveryTask.fromJson(j),
        items: (j['items'] is List)
            ? (j['items'] as List)
                .map((i) => FoodOrderItem.fromJson(Map<String, dynamic>.from(i)))
                .toList()
            : <FoodOrderItem>[],
        merchantPhone: j['merchant_phone']?.toString(),
      );
}

class FoodCourierStatus {
  final bool deliveryModeEnabled;
  final int activeOrdersCount;
  final int todayOrdersCount;
  final int todayEarnings;

  FoodCourierStatus({
    required this.deliveryModeEnabled,
    this.activeOrdersCount = 0,
    this.todayOrdersCount = 0,
    this.todayEarnings = 0,
  });

  factory FoodCourierStatus.fromJson(Map<String, dynamic> j) => FoodCourierStatus(
        deliveryModeEnabled: j['delivery_mode_enabled'] == true ||
            j['delivery_mode_enabled']?.toString() == '1' ||
            j['delivery_mode_enabled']?.toString() == 'true',
        activeOrdersCount: _int(j['active_orders_count']),
        todayOrdersCount: _int(j['today_orders_count']),
        todayEarnings: _int(j['today_earnings']),
      );
}

class FoodEarningsDay {
  final String day;
  final int ordersCount;
  final int earnings;

  FoodEarningsDay({required this.day, required this.ordersCount, required this.earnings});

  factory FoodEarningsDay.fromJson(Map<String, dynamic> j) => FoodEarningsDay(
        day: j['day']?.toString() ?? '',
        ordersCount: _int(j['orders_count']),
        earnings: _int(j['earnings']),
      );
}

class FoodEarnings {
  final int todayEarnings;
  final int todayOrders;
  final int weekEarnings;
  final int weekOrders;
  final int monthEarnings;
  final int monthOrders;
  final int totalEarnings;
  final int totalOrders;
  final int pendingCashOwed;
  final List<FoodEarningsDay> daily;

  FoodEarnings({
    required this.todayEarnings,
    required this.todayOrders,
    required this.weekEarnings,
    required this.weekOrders,
    required this.monthEarnings,
    required this.monthOrders,
    required this.totalEarnings,
    required this.totalOrders,
    required this.pendingCashOwed,
    required this.daily,
  });

  factory FoodEarnings.fromJson(Map<String, dynamic> j) => FoodEarnings(
        todayEarnings: _int(j['today_earnings']),
        todayOrders: _int(j['today_orders']),
        weekEarnings: _int(j['week_earnings']),
        weekOrders: _int(j['week_orders']),
        monthEarnings: _int(j['month_earnings']),
        monthOrders: _int(j['month_orders']),
        totalEarnings: _int(j['total_earnings']),
        totalOrders: _int(j['total_orders']),
        pendingCashOwed: _int(j['pending_cash_owed']),
        daily: (j['daily'] is List)
            ? (j['daily'] as List)
                .map((d) => FoodEarningsDay.fromJson(Map<String, dynamic>.from(d)))
                .toList()
            : <FoodEarningsDay>[],
      );
}

class FoodHistoryEntry {
  final int id;
  final String merchantNameAr;
  final String? merchantAddress;
  final int deliveryFee;
  final int grandTotal;
  final String paymentMethod;
  final int itemsCount;
  final int? rating;
  final int? durationMinutes;
  final DateTime? deliveredAt;

  FoodHistoryEntry({
    required this.id,
    required this.merchantNameAr,
    required this.deliveryFee,
    this.merchantAddress,
    this.grandTotal = 0,
    this.paymentMethod = 'wallet',
    this.itemsCount = 0,
    this.rating,
    this.durationMinutes,
    this.deliveredAt,
  });

  factory FoodHistoryEntry.fromJson(Map<String, dynamic> j) => FoodHistoryEntry(
        id: _int(j['id']),
        merchantNameAr: j['merchant_name_ar']?.toString() ?? '',
        merchantAddress: j['merchant_address']?.toString(),
        deliveryFee: _int(j['delivery_fee']),
        grandTotal: _int(j['grand_total']),
        paymentMethod: j['payment_method']?.toString() ?? 'wallet',
        itemsCount: _int(j['items_count']),
        rating: j['rating'] == null ? null : _int(j['rating']),
        durationMinutes: j['duration_minutes'] == null ? null : _int(j['duration_minutes']),
        deliveredAt: _date(j['delivered_at']),
      );
}

const int foodCurrencyDivisor = 1000;

String foodFormatPrice(int smallestUnit, {String currencySymbol = 'د.أ'}) {
  final decimal = smallestUnit / foodCurrencyDivisor;
  return '${decimal.toStringAsFixed(3)} $currencySymbol';
}