import "../models/trip.dart";

class TripValidator {
  static List<String> validate(Trip trip) {
    final errors = <String>[];

    // Validate time format
    if (!RegExp(r"^\d{2}:\d{2}$").hasMatch(trip.scheduledTime)) {
      errors.add("Invalid time format: ${trip.scheduledTime}");
    }

    // Validate trip number
    if (trip.tripNumber.isEmpty) {
      errors.add("Missing trip number");
    }

    // Validate duty/running numbers
    if (trip.dutyNumber.isEmpty || trip.runningNumber.isEmpty) {
      errors.add("Missing duty or running number");
    }

    // Validate actual departure time if provided
    if (trip.actualDepartureTime != null &&
        !RegExp(r"^\d{2}:\d{2}$").hasMatch(trip.actualDepartureTime!)) {
      errors.add("Invalid actual departure time format: ${trip.actualDepartureTime}");
    }

    return errors;
  }

  static bool isValid(Trip trip) {
    return validate(trip).isEmpty;
  }
}