import 'package:nmea/nmea.dart';

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

  @override
  bool get valid => super.valid && fields.length == 15;

  String get utcOfPositionFix => fields[1];
  int get gpsQualityIndicator => int.parse(fields[6]);
  double get latitude => _getCoordinateFromGpsLatitude(fields[2]);
  String get latitudeDirection => fields[3];
  double get longitude => _getCoordinateFromGpsLongitude(fields[4]);
  String get longitudeDirection => fields[5];
  int get numberOfSvsInUse => int.parse(fields[7]);
  double get hdop => double.parse(fields[8]);
  double get altitudeAboveMeanSeaLevel => double.parse(fields[9]);
  double get geoidSeparation => double.parse(fields[11]);

  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;
  }
}