// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "modules/sensor/AmbientLightSensorReading.h"

#include "modules/sensor/SensorProxy.h"

namespace blink {

AmbientLightSensorReading::AmbientLightSensorReading(const AmbientLightSensorReadingInit& init)
    : SensorReading(nullptr)
    , mAmbientLightSensorReadingInit(init)
{
}

AmbientLightSensorReading::AmbientLightSensorReading(SensorProxy* proxy)
    : SensorReading(proxy)
    , mAmbientLightSensorReadingInit(AmbientLightSensorReadingInit())
{
}

AmbientLightSensorReading::~AmbientLightSensorReading() = default;

double AmbientLightSensorReading::illuminance() const
{
    if (mAmbientLightSensorReadingInit.hasIlluminance())
        return mAmbientLightSensorReadingInit.illuminance();

    if (!m_sensorProxy)
        return 0.0;
    return m_sensorProxy->reading().reading[0];
}

bool AmbientLightSensorReading::isReadingUpdated(const SensorProxy::Reading& previous) const
{
    if (!m_sensorProxy)
        return false;
    return previous.reading[0] != illuminance();
}

DEFINE_TRACE(AmbientLightSensorReading)
{
    SensorReading::trace(visitor);
}

} // namespace blink