/****************************************************************************
**
** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "channelmapper_p.h"
#include <Qt3DAnimation/qchannelmapper.h>
#include <Qt3DAnimation/private/qchannelmapper_p.h>
#include <Qt3DAnimation/private/animationlogging_p.h>
#include <Qt3DAnimation/private/managers_p.h>
#include <Qt3DCore/qpropertyupdatedchange.h>
#include <Qt3DCore/qpropertynodeaddedchange.h>
#include <Qt3DCore/qpropertynoderemovedchange.h>

QT_BEGIN_NAMESPACE

namespace Qt3DAnimation {
namespace Animation {

ChannelMapper::ChannelMapper()
    : BackendNode(ReadOnly)
    , m_mappingIds()
    , m_isDirty(true)
{
}

void ChannelMapper::initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change)
{
    const auto typedChange = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<QChannelMapperData>>(change);
    const auto &data = typedChange->data;
    m_mappingIds = data.mappingIds;
    m_isDirty = true;
}

void ChannelMapper::cleanup()
{
    setEnabled(false);
    m_mappingIds.clear();
    m_mappings.clear();
    m_isDirty = true;
}

void ChannelMapper::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
{
    switch (e->type()) {
    case Qt3DCore::PropertyValueAdded: {
        const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeAddedChange>(e);
        if (change->propertyName() == QByteArrayLiteral("mappings")) {
            m_mappingIds.push_back(change->addedNodeId());
            setDirty(Handler::ChannelMappingsDirty);
            m_isDirty = true;
        }
        break;
    }

    case Qt3DCore::PropertyValueRemoved: {
        const auto change = qSharedPointerCast<Qt3DCore::QPropertyNodeRemovedChange>(e);
        if (change->propertyName() == QByteArrayLiteral("mappings")) {
            m_mappingIds.removeOne(change->removedNodeId());
            setDirty(Handler::ChannelMappingsDirty);
            m_isDirty = true;
        }
        break;
    }

    default:
        break;
    }
    QBackendNode::sceneChangeEvent(e);
}

void ChannelMapper::updateMappings() const
{
    m_mappings.clear();
    m_mappings.reserve(m_mappingIds.size());
    const auto mappingManager = m_handler->channelMappingManager();
    for (const auto &mappingId : m_mappingIds) {
        const auto mapping = mappingManager->lookupResource(mappingId);
        Q_ASSERT(mapping);
        m_mappings.push_back(mapping);
    }
    m_isDirty = false;
}

} // namespace Animation
} // namespace Qt3DAnimation

QT_END_NAMESPACE