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#include "gruesensorimpl.h"
#include <QDebug>

const char *gruesensorimpl::id("grue.gruesensor");

gruesensorimpl::gruesensorimpl(QSensor *sensor)
    : QSensorBackend(sensor)
{
    lightSensor = new QAmbientLightSensor(this);
    lightSensor->addFilter(this);
    lightSensor->connectToBackend();

    setReading<GrueSensorReading>(&m_reading);
    setDataRates(lightSensor);
    addOutputRange(0, 1, 0.1);
    setDescription(QLatin1String("Grue Sensor"));
}

void gruesensorimpl::start()
{
    lightSensor->setDataRate(sensor()->dataRate());
    lightSensor->start();
}

void gruesensorimpl::stop()
{
    lightSensor->stop();
}

bool gruesensorimpl::filter(QAmbientLightReading *reading)
{
    qreal chance;

    switch (reading->lightLevel()) {
    case QAmbientLightReading::Undefined:
        chance = 0.5; // No idea... call it 50/50
        break;
    case QAmbientLightReading::Dark:
        chance = 1.0;
        break;
    case QAmbientLightReading::Twilight:
        chance = 0.1;
        break;
    default:
        chance = 0.0;
        break;
    }

    if (chance != m_reading.chanceOfBeingEaten()) {
        m_reading.setTimestamp(reading->timestamp());
        m_reading.setChanceOfBeingEaten(chance);

        newReadingAvailable();
    }

    return true;
}