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//Symbian
#include <e32std.h>
#include <rrsensorapi.h>

// Local
#include "qs60sensorapiaccelerometer.h"

// Constants
const int KAccelerometerSensorUID = 0x10273024;

const char *QS60SensorApiAccelerometer::id("s60sensorapi.accelerometer");

QS60SensorApiAccelerometer::QS60SensorApiAccelerometer(QSensor *sensor)
    : QSensorBackend(sensor)
    , m_nativeSensor(NULL)
    , m_sampleFactor(0.0f)
{
    TRAPD(err, findAndCreateNativeSensorL());
    if(err != KErrNone) {
        sensorStopped();
        sensorError(err);
    }
    
    setReading<QAccelerometerReading>(&m_reading);
    
    // http://www.st.com/stonline/products/literature/ds/12726/lis302dl.pdf
    // That 3D accelerometer inside N95 , N93i or N82 is from STMicroelectronics (type LIS302DL).
    // http://wiki.forum.nokia.com/index.php/Nokia_Sensor_APIs.
    // Sensor is set to 100Hz 2G mode and no public interface to switch it to 8G
    
    // 2G - mode
    addDataRate(100, 100);
    sensor->setDataRate(100);
    addOutputRange(-22.418, 22.418, 0.17651);
    setDescription(QLatin1String("lis302dl"));
    
    //Synbian interface gives values between -680 - 680
    m_sampleFactor =  this->sensor()->outputRanges()[0].maximum / 680.0f;
}

QS60SensorApiAccelerometer::~QS60SensorApiAccelerometer()
{
    stop();
    delete m_nativeSensor;
    m_nativeSensor = NULL;
}

void QS60SensorApiAccelerometer::start()
{
    if(!m_nativeSensor)
        return;
    
    m_nativeSensor->AddDataListener(this);    
}

void QS60SensorApiAccelerometer::stop()
{
    if(!m_nativeSensor)
        return;
    
    m_nativeSensor->RemoveDataListener();
}

void QS60SensorApiAccelerometer::poll()
{
    //empty implementation
}


void QS60SensorApiAccelerometer::HandleDataEventL(TRRSensorInfo aSensor, TRRSensorEvent aEvent)
{
    if (aSensor.iSensorId != KAccelerometerSensorUID) 
        return; 
    
    TTime time;
    time.UniversalTime();
    m_reading.setTimestamp(time.Int64());
    m_reading.setX((qreal)aEvent.iSensorData2 * m_sampleFactor);
    m_reading.setY((qreal)aEvent.iSensorData1 * -m_sampleFactor);
    m_reading.setZ((qreal)aEvent.iSensorData3 * -m_sampleFactor);
    newReadingAvailable();
}

void QS60SensorApiAccelerometer::findAndCreateNativeSensorL()
{
    if(m_nativeSensor)
        return;
    
    RArray<TRRSensorInfo> sensorList;
    CRRSensorApi::FindSensorsL(sensorList);
    CleanupClosePushL(sensorList);

    TInt index = 0;
    do {
        if (sensorList[index].iSensorId == KAccelerometerSensorUID)
            m_nativeSensor = CRRSensorApi::NewL(sensorList[index]);
    } while(!m_nativeSensor && ++index < sensorList.Count());
        
    if (!m_nativeSensor)
        User::Leave(KErrHardwareNotAvailable);
    
    CleanupStack::PopAndDestroy(&sensorList);
}
