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#include "ambientlightsensorsym.h"

/**
 * set the id of the ambient light sensor
 */
char const * const CAmbientLightSensorSym::id("sym.ambientlight");

/**
 * Factory function, this is used to create the ambient light sensor object
 * @return CAmbientLightSensorSym if successful, leaves on failure
 */
CAmbientLightSensorSym* CAmbientLightSensorSym::NewL(QSensor *sensor)
    {
    CAmbientLightSensorSym* self = new (ELeave) CAmbientLightSensorSym(sensor);
    CleanupStack::PushL(self);
    self->ConstructL();
    CleanupStack::Pop();
    return self;    
    }

/**
 * Destructor
 * Closes the backend resources
 */
CAmbientLightSensorSym::~CAmbientLightSensorSym()
    {
    // Release the backend resources
    Close();
    }

/**
 * Default constructor
 */
CAmbientLightSensorSym::CAmbientLightSensorSym(QSensor *sensor):CSensorBackendSym(sensor)
    {
    setReading<QAmbientLightReading>(&iReading);    
    iBackendData.iSensorType = KSensrvChannelTypeIdAmbientLightData;
    }

/*
 * RecvData is used to retrieve the sensor reading from sensor server
 * It is implemented here to handle ambient light sensor specific
 * reading data and provides conversion and utility code
 */  
void CAmbientLightSensorSym::RecvData(CSensrvChannel &aChannel)
    {
    TPckg<TSensrvAmbientLightData> lightpkg( iData );
    TInt ret = aChannel.GetData( lightpkg );
    if(KErrNone != ret)
        {
        // If there is no reading available, return without setting
        return;
        }
    // Get a lock on the reading data
    iBackendData.iReadingLock.Wait();
    switch (iData.iAmbientLight)
        {
        case TSensrvAmbientLightData::KAmbientLightVeryDark:
        case TSensrvAmbientLightData::KAmbientLightDark:
            {
            iReading.setLightLevel(QAmbientLightReading::Dark);               
            }
            break;

        case TSensrvAmbientLightData::KAmbientLightTwilight:
            {
            iReading.setLightLevel(QAmbientLightReading::Twilight);
            }
            break;

        case TSensrvAmbientLightData::KAmbientLightLight:
            {
            iReading.setLightLevel(QAmbientLightReading::Light);
            }
            break;

        case TSensrvAmbientLightData::KAmbientLightBright:
            {
            iReading.setLightLevel(QAmbientLightReading::Bright);
            }
            break;

        case TSensrvAmbientLightData::KAmbientLightSunny:
            {
            iReading.setLightLevel(QAmbientLightReading::Sunny);
            }
            break;

        default:
            {
            iReading.setLightLevel(QAmbientLightReading::Undefined);
            }
        }
    // Set the timestamp
    iReading.setTimestamp(iData.iTimeStamp.Int64());
    // Release the lock
    iBackendData.iReadingLock.Signal();
    }

/**
 * Second phase constructor
 * Initialize the backend resources
 */
void CAmbientLightSensorSym::ConstructL()
    {
    //Initialize the backend resources
    InitializeL();
    }