class HazardModel {
  final String type; // 'accident', 'closure', 'bump', 'checkpoint', 'camera'
  final String title;
  final String description;
  final double latitude;
  final double longitude;
  final double altitude; // Altitude AMSL in meters (defaults to 0.0)
  final DateTime createdAt;

  HazardModel({
    required this.type,
    required this.title,
    required this.description,
    required this.latitude,
    required this.longitude,
    this.altitude = 0.0,
    required this.createdAt,
  });

  Map<String, dynamic> toJson() {
    return {
      'type': type,
      'title': title,
      'description': description,
      'latitude': latitude,
      'longitude': longitude,
      'altitude': altitude,
      'elevation_meters': altitude,
      'timestamp': createdAt.toIso8601String(),
    };
  }
}