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#include "maemo6compass.h"

const char *maemo6compass::id("maemo6.compass");

bool maemo6compass::m_initDone = false;

maemo6compass::maemo6compass(QSensor *sensor)

    : maemo6sensorbase(sensor)

{

    setReading<QCompassReading>(&m_reading);

    if (!m_initDone) {

        initSensor<CompassSensorChannelInterface>("compasssensor");

        if (m_sensorInterface) {

            QObject::connect(static_cast<CompassSensorChannelInterface*>(m_sensorInterface), SIGNAL(levelChanged(const int&)), this, SLOT(slotLevelChanged(const int&)));

            QObject::connect(static_cast<CompassSensorChannelInterface*>(m_sensorInterface), SIGNAL(degreesChanged(const int&)), this, SLOT(slotDegreesChanged(const int&)));

        } else {

            qWarning() << "Unable to initialize compass sensor.";            

        }

        // metadata TODO accuracy

        setDescription(QLatin1String("Measures compass north in degrees"));

        m_initDone = true;

    }

}

void maemo6compass::slotLevelChanged(const int& level)

{

    // The scale for level is [0,3], where 3 is the best

    // Qt: Measured as a value from 0 to 1 with higher values being better.

    float l = ((float) level) / 3.0;

    qreal calibrationLevel = l;

    m_reading.setCalibrationLevel(calibrationLevel);

    //m_reading.setTimestamp(level.timestamp());

    m_reading.setTimestamp(createTimestamp()); //TODO: use correct timestamp

    newReadingAvailable();

}

void maemo6compass::slotDegreesChanged(const int& degrees)

{

    // The scale for degrees from sensord is [0,359]

    // Value can be directly used as azimuth

    qreal azimuth = degrees;

    m_reading.setAzimuth(azimuth);

    //m_reading.setTimestamp(degrees.timestamp());

    m_reading.setTimestamp(createTimestamp()); //TODO: use correct timestamp

    newReadingAvailable();

}