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#include <Qt3DRender/private/qrendercapture_p.h>
#include <Qt3DRender/private/rendercapture_p.h>
#include <Qt3DCore/qpropertyupdatedchange.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {

namespace Render {

RenderCapture::RenderCapture()
    : FrameGraphNode(FrameGraphNode::RenderCapture, QBackendNode::ReadWrite)
{

}

// called by aspect thread
void RenderCapture::requestCapture(int captureId)
{
    QMutexLocker lock(&m_mutex);
    m_requestedCaptures.push_back(captureId);
}

bool RenderCapture::wasCaptureRequested() const
{
    QMutexLocker lock(&m_mutex);
    return m_requestedCaptures.size() > 0 && isEnabled();
}

void RenderCapture::acknowledgeCaptureRequest()
{
    QMutexLocker lock(&m_mutex);
    m_acknowledgedCaptures.push_back(m_requestedCaptures.takeFirst());
}

void RenderCapture::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
{
    if (e->type() == Qt3DCore::PropertyUpdated) {
        Qt3DCore::QPropertyUpdatedChangePtr propertyChange = qSharedPointerCast<Qt3DCore::QPropertyUpdatedChange>(e);
        if (propertyChange->propertyName() == QByteArrayLiteral("renderCaptureRequest")) {
            requestCapture(propertyChange->value().toInt());
        }
    }
    FrameGraphNode::sceneChangeEvent(e);
}

// called by render thread
void RenderCapture::addRenderCapture(const QImage &image)
{
    QMutexLocker lock(&m_mutex);
    auto data = RenderCaptureDataPtr::create();
    data.data()->captureId = m_acknowledgedCaptures.takeFirst();
    data.data()->image = image;
    m_renderCaptureData.push_back(data);
}

// called by send render capture job thread
void RenderCapture::sendRenderCaptures()
{
    QMutexLocker lock(&m_mutex);

    for (const RenderCaptureDataPtr &data : qAsConst(m_renderCaptureData)) {
        auto e = Qt3DCore::QPropertyUpdatedChangePtr::create(peerId());
        e->setDeliveryFlags(Qt3DCore::QSceneChange::DeliverToAll);
        e->setPropertyName("renderCaptureData");
        e->setValue(QVariant::fromValue(data));
        notifyObservers(e);
    }
    m_renderCaptureData.clear();
}

} // Render

} // Qt3DRender

QT_END_NAMESPACE
