ths.go

package nmea

const (
	// TypeTHS type for THS sentences
	TypeTHS = "THS"
	// AutonomousTHS autonomous ths heading
	AutonomousTHS = "A"
	// EstimatedTHS estimated (dead reckoning) THS heading
	EstimatedTHS = "E"
	// ManualTHS manual input THS heading
	ManualTHS = "M"
	// SimulatorTHS simulated THS heading
	SimulatorTHS = "S"
	// InvalidTHS not valid THS heading (or standby)
	InvalidTHS = "V"
)

// THS is the Actual vessel heading in degrees True with status.
// http://www.nuovamarea.net/pytheas_9.html
type THS struct {
	BaseSentence
	Heading float64 // Heading in degrees
	Status  string  // Heading status
}

func (s THS) ToMap() (map[string]interface{}, error) {
	m := map[string]interface{}{
		"heading": s.Heading,
		"status":  s.Status,
	}
	bm, err := s.BaseSentence.toMap()
	if err != nil {
		return m, err
	}
	for k, v := range bm {
		m[k] = v
	}
	return m, nil
}

// newTHS constructor
func newTHS(s BaseSentence) (THS, error) {
	p := NewParser(s)
	p.AssertType(TypeTHS)
	m := THS{
		BaseSentence: s,
		Heading:      p.Float64(0, "heading"),
		Status:       p.EnumString(1, "status", AutonomousTHS, EstimatedTHS, ManualTHS, SimulatorTHS, InvalidTHS),
	}
	return m, p.Err()
}