class Trip {
  final String scheduledTime; // "15:31" - default departure time (first non-empty time)
  final String tripNumber; // "112"
  final String dutyNumber; // "518"
  final String runningNumber; // "518"
  final String tripType; // "", "N", "R", "F"
  final bool isFinishing;
  final Map<String, String> stationTimes; // {"UXBG": "15:31", "HILL": "15:42", ...}
  final List<String> stationOrder; // ["UXBG", "UXBG", "HILL", "ICKE", ...]
  final String direction; // "outbound" or "inbound"

  String? actualDepartureTime; // "15:33" (nullable - user input)
  String? actualFleetNumber; // "33523" (nullable - user input)

  Trip({
    required this.scheduledTime,
    required this.tripNumber,
    required this.dutyNumber,
    required this.runningNumber,
    this.tripType = "",
    this.isFinishing = false,
    this.stationTimes = const {},
    this.stationOrder = const [],
    this.direction = "outbound",
    this.actualDepartureTime,
    this.actualFleetNumber,
  });

  bool get isComplete =>
      actualDepartureTime != null && actualFleetNumber != null;

  Trip copyWith({
    String? scheduledTime,
    String? tripNumber,
    String? dutyNumber,
    String? runningNumber,
    String? tripType,
    bool? isFinishing,
    Map<String, String>? stationTimes,
    List<String>? stationOrder,
    String? direction,
    String? actualDepartureTime,
    String? actualFleetNumber,
  }) {
    return Trip(
      scheduledTime: scheduledTime ?? this.scheduledTime,
      tripNumber: tripNumber ?? this.tripNumber,
      dutyNumber: dutyNumber ?? this.dutyNumber,
      runningNumber: runningNumber ?? this.runningNumber,
      tripType: tripType ?? this.tripType,
      isFinishing: isFinishing ?? this.isFinishing,
      stationTimes: stationTimes ?? this.stationTimes,
      stationOrder: stationOrder ?? this.stationOrder,
      direction: direction ?? this.direction,
      actualDepartureTime: actualDepartureTime ?? this.actualDepartureTime,
      actualFleetNumber: actualFleetNumber ?? this.actualFleetNumber,
    );
  }

  Map<String, dynamic> toJson() {
    return {
      "scheduledTime": scheduledTime,
      "tripNumber": tripNumber,
      "dutyNumber": dutyNumber,
      "runningNumber": runningNumber,
      "tripType": tripType,
      "isFinishing": isFinishing,
      "stationTimes": stationTimes,
      "stationOrder": stationOrder,
      "direction": direction,
      "actualDepartureTime": actualDepartureTime,
      "actualFleetNumber": actualFleetNumber,
    };
  }

  factory Trip.fromJson(Map<String, dynamic> json) {
    return Trip(
      scheduledTime: json["scheduledTime"] as String,
      tripNumber: json["tripNumber"] as String,
      dutyNumber: json["dutyNumber"] as String,
      runningNumber: json["runningNumber"] as String,
      tripType: json["tripType"] as String? ?? "",
      isFinishing: json["isFinishing"] as bool? ?? false,
      stationTimes: Map<String, String>.from(json["stationTimes"] as Map? ?? {}),
      stationOrder: List<String>.from(json["stationOrder"] as List? ?? []),
      direction: json["direction"] as String? ?? "outbound",
      actualDepartureTime: json["actualDepartureTime"] as String?,
      actualFleetNumber: json["actualFleetNumber"] as String?,
    );
  }
}