import 'package:nmea/nmea.dart';

class Gnrmc extends TalkerSentence {
  static const String id = "GNRMC";
  Gnrmc({required super.raw});

  @override
  bool get valid => super.valid && fields.length == 14;

  String get messageId => fields[0];
  String get utcOfPositionFix => fields[1];
  String get Status => fields[2];
  double get latitude => _getCoordinateFromGpsLatitude(fields[3]);
  String get latitudeDirection => fields[4];
  double get longitude => _getCoordinateFromGpsLongitude(fields[5]);
  String get longitudeDirection => fields[6];
  double get speedOverGroundKnots => double.parse(fields[7]);
  double get courseOverGround => double.parse(fields[8]);
  String get date => fields[9];
  double get magneticVariation => double.parse(fields[10]);
  String get magneticVariationDirection => fields[11];
  String get positioningSystemModeIndicator => fields[12];

  double _getCoordinateFromGpsLongitude(String coordinate) {
    double result =
        double.parse("${coordinate[0]}${coordinate[1]}${coordinate[2]}") +
            double.parse(coordinate.substring(3)) / 60;

    return result;
  }

  double _getCoordinateFromGpsLatitude(String coordinate) {
    double result = double.parse("${coordinate[0]}${coordinate[1]}") +
        double.parse(coordinate.substring(2)) / 60;

    return result;
  }
}