import 'package:equatable/equatable.dart';

import 'geo_point.dart';

/// حالات الرحلة كما يعرّفها الخادم (docs/38 §4).
enum TripStatus {
  searching,
  assigned,
  driverArriving,
  driverArrived,
  inProgress,
  completed,
  paid,
  cancelled,
  expired,
  noDrivers,
  unknown;

  static TripStatus parse(String? raw) => switch (raw) {
        'searching' => TripStatus.searching,
        'assigned' => TripStatus.assigned,
        'driver_arriving' => TripStatus.driverArriving,
        'driver_arrived' => TripStatus.driverArrived,
        'in_progress' => TripStatus.inProgress,
        'completed' => TripStatus.completed,
        'paid' => TripStatus.paid,
        'cancelled' => TripStatus.cancelled,
        'expired' => TripStatus.expired,
        'no_drivers' => TripStatus.noDrivers,
        _ => TripStatus.unknown,
      };

  String get wire => switch (this) {
        TripStatus.driverArriving => 'driver_arriving',
        TripStatus.driverArrived => 'driver_arrived',
        TripStatus.inProgress => 'in_progress',
        TripStatus.noDrivers => 'no_drivers',
        _ => name,
      };

  /// رحلة جارية تُستأنف عند فتح التطبيق.
  bool get isLive => const {
        TripStatus.searching,
        TripStatus.assigned,
        TripStatus.driverArriving,
        TripStatus.driverArrived,
        TripStatus.inProgress,
      }.contains(this);

  bool get isOver => const {
        TripStatus.completed,
        TripStatus.paid,
        TripStatus.cancelled,
        TripStatus.expired,
        TripStatus.noDrivers,
      }.contains(this);
}

class Trip extends Equatable {
  const Trip({
    required this.id,
    required this.status,
    this.origin,
    this.destination,
    this.quotedFare,
    this.priceForPassenger,
    this.priceForDriver,
    this.currency = '',
    this.driverName,
    this.driverPhone,
    this.vehiclePlate,
    this.vehicleModel,
    this.driverRating,
  });

  final String id;
  final TripStatus status;
  final GeoPoint? origin;
  final GeoPoint? destination;

  /// أجرة مقفولة عند الطلب.
  final String? quotedFare;

  /// **حقلان منفصلان** لا حقل واحد — الفرق هو العمولة (docs/38 §4).
  final String? priceForPassenger;
  final String? priceForDriver;

  final String currency;
  final String? driverName;
  final String? driverPhone;
  final String? vehiclePlate;
  final String? vehicleModel;
  final String? driverRating;

  factory Trip.fromJson(Map<String, dynamic> json) {
    GeoPoint? point(String key) {
      final v = json[key];
      return v is Map<String, dynamic> ? GeoPoint.fromJson(v) : null;
    }

    final driver = json['driver'] as Map<String, dynamic>?;
    return Trip(
      id: json['id'] as String,
      status: TripStatus.parse(json['status'] as String?),
      origin: point('origin'),
      destination: point('destination'),
      // كل المبالغ نصوص (docs/38 §12.2) — تُحفظ كما وصلت ولا تُحوَّل هنا.
      quotedFare: json['quoted_fare']?.toString(),
      priceForPassenger: json['price_for_passenger']?.toString(),
      priceForDriver: json['price_for_driver']?.toString(),
      currency: json['currency'] as String? ?? '',
      driverName: driver?['name'] as String? ?? json['driver_name'] as String?,
      driverPhone:
          driver?['phone'] as String? ?? json['driver_phone'] as String?,
      vehiclePlate:
          driver?['vehicle_plate'] as String? ?? json['vehicle_plate'] as String?,
      vehicleModel:
          driver?['vehicle_model'] as String? ?? json['vehicle_model'] as String?,
      driverRating: driver?['rating']?.toString(),
    );
  }

  @override
  List<Object?> get props => [id, status, priceForPassenger, driverName];
}