import 'stop_model.dart';

enum RouteStatus { notStarted, inProgress, completed, cancelled }

class RouteModel {
  final String id;
  final String driverId;
  final String driverName;
  final DateTime date;
  final RouteStatus status;
  final List<StopModel> stops;
  final double totalDistance; // in kilometers
  final int estimatedDuration; // in minutes
  final DateTime? startTime;
  final DateTime? endTime;
  final String? vehicleId;
  final String? notes;

  RouteModel({
    required this.id,
    required this.driverId,
    required this.driverName,
    required this.date,
    required this.status,
    required this.stops,
    required this.totalDistance,
    required this.estimatedDuration,
    this.startTime,
    this.endTime,
    this.vehicleId,
    this.notes,
  });

  factory RouteModel.fromJson(Map<String, dynamic> json) {
    return RouteModel(
      id: json['id'] as String,
      driverId: json['driverId'] as String,
      driverName: json['driverName'] as String,
      date: DateTime.parse(json['date'] as String),
      status: RouteStatus.values.firstWhere(
        (e) => e.toString() == 'RouteStatus.${json['status']}',
      ),
      stops: (json['stops'] as List<dynamic>)
          .map((stop) => StopModel.fromJson(stop as Map<String, dynamic>))
          .toList(),
      totalDistance: (json['totalDistance'] as num).toDouble(),
      estimatedDuration: json['estimatedDuration'] as int,
      startTime: json['startTime'] != null
          ? DateTime.parse(json['startTime'] as String)
          : null,
      endTime: json['endTime'] != null
          ? DateTime.parse(json['endTime'] as String)
          : null,
      vehicleId: json['vehicleId'] as String?,
      notes: json['notes'] as String?,
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'driverId': driverId,
      'driverName': driverName,
      'date': date.toIso8601String(),
      'status': status.toString().split('.').last,
      'stops': stops.map((stop) => stop.toJson()).toList(),
      'totalDistance': totalDistance,
      'estimatedDuration': estimatedDuration,
      'startTime': startTime?.toIso8601String(),
      'endTime': endTime?.toIso8601String(),
      'vehicleId': vehicleId,
      'notes': notes,
    };
  }

  RouteModel copyWith({
    String? id,
    String? driverId,
    String? driverName,
    DateTime? date,
    RouteStatus? status,
    List<StopModel>? stops,
    double? totalDistance,
    int? estimatedDuration,
    DateTime? startTime,
    DateTime? endTime,
    String? vehicleId,
    String? notes,
  }) {
    return RouteModel(
      id: id ?? this.id,
      driverId: driverId ?? this.driverId,
      driverName: driverName ?? this.driverName,
      date: date ?? this.date,
      status: status ?? this.status,
      stops: stops ?? this.stops,
      totalDistance: totalDistance ?? this.totalDistance,
      estimatedDuration: estimatedDuration ?? this.estimatedDuration,
      startTime: startTime ?? this.startTime,
      endTime: endTime ?? this.endTime,
      vehicleId: vehicleId ?? this.vehicleId,
      notes: notes ?? this.notes,
    );
  }

  int get completedStopsCount =>
      stops.where((stop) => stop.status == StopStatus.completed).length;

  int get totalStopsCount => stops.length;

  double get progressPercentage =>
      totalStopsCount > 0 ? (completedStopsCount / totalStopsCount) * 100 : 0;

  StopModel? get nextStop => stops.firstWhere(
        (stop) => stop.status == StopStatus.pending,
        orElse: () => stops.first,
      );
}