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#include "mmrenderermetadatareadercontrol.h"
#include <QtMultimedia/qmediametadata.h>

QT_BEGIN_NAMESPACE

MmRendererMetaDataReaderControl::MmRendererMetaDataReaderControl(QObject *parent)
    : QMetaDataReaderControl(parent)
{
}

bool MmRendererMetaDataReaderControl::isMetaDataAvailable() const
{
    return !availableMetaData().isEmpty();
}

QVariant MmRendererMetaDataReaderControl::metaData(const QString &key) const
{
    if (key == QMediaMetaData::Title)
        return m_metaData.title();
    else if (key == QMediaMetaData::Author)
        return m_metaData.artist();
    else if (key == QMediaMetaData::Comment)
        return m_metaData.comment();
    else if (key == QMediaMetaData::Genre)
        return m_metaData.genre();
    else if (key == QMediaMetaData::Year)
        return m_metaData.year();
    else if (key == QMediaMetaData::MediaType)
        return m_metaData.mediaType();
    else if (key == QMediaMetaData::Duration)
        return m_metaData.duration();
    else if (key == QMediaMetaData::AudioBitRate)
        return m_metaData.audioBitRate();
    else if (key == QMediaMetaData::SampleRate)
        return m_metaData.sampleRate();
    else if (key == QMediaMetaData::AlbumTitle)
        return m_metaData.album();
    else if (key == QMediaMetaData::TrackNumber)
        return m_metaData.track();
    else if (key == QMediaMetaData::Resolution)
        return m_metaData.resolution();

    return QVariant();
}

QStringList MmRendererMetaDataReaderControl::availableMetaData() const
{
    QStringList metaData;

    if (!m_metaData.title().isEmpty())
        metaData << QMediaMetaData::Title;
    if (!m_metaData.artist().isEmpty())
        metaData << QMediaMetaData::Author;
    if (!m_metaData.comment().isEmpty())
        metaData << QMediaMetaData::Comment;
    if (!m_metaData.genre().isEmpty())
        metaData << QMediaMetaData::Genre;
    if (m_metaData.year() != 0)
        metaData << QMediaMetaData::Year;
    if (!m_metaData.mediaType().isEmpty())
        metaData << QMediaMetaData::MediaType;
    if (m_metaData.duration() != 0)
        metaData << QMediaMetaData::Duration;
    if (m_metaData.audioBitRate() != 0)
        metaData << QMediaMetaData::AudioBitRate;
    if (m_metaData.sampleRate() != 0)
        metaData << QMediaMetaData::SampleRate;
    if (!m_metaData.album().isEmpty())
        metaData << QMediaMetaData::AlbumTitle;
    if (m_metaData.track() != 0)
        metaData << QMediaMetaData::TrackNumber;
    if (m_metaData.resolution().isValid())
        metaData << QMediaMetaData::Resolution;

    return metaData;
}

void MmRendererMetaDataReaderControl::setMetaData(const MmRendererMetaData &data)
{
    const MmRendererMetaData oldMetaData = m_metaData;
    const bool oldMetaDataAvailable = isMetaDataAvailable();

    m_metaData = data;

    bool changed = false;
    if (m_metaData.title() != oldMetaData.title()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Title, m_metaData.title());
    } else if (m_metaData.artist() != oldMetaData.artist()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Author, m_metaData.artist());
    } else if (m_metaData.comment() != oldMetaData.comment()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Comment, m_metaData.comment());
    } else if (m_metaData.genre() != oldMetaData.genre()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Genre, m_metaData.genre());
    } else if (m_metaData.year() != oldMetaData.year()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Year, m_metaData.year());
    } else if (m_metaData.mediaType() != oldMetaData.mediaType()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::MediaType, m_metaData.mediaType());
    } else if (m_metaData.duration() != oldMetaData.duration()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Duration, m_metaData.duration());
    } else if (m_metaData.audioBitRate() != oldMetaData.audioBitRate()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::AudioBitRate, m_metaData.audioBitRate());
    } else if (m_metaData.sampleRate() != oldMetaData.sampleRate()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::SampleRate, m_metaData.sampleRate());
    } else if (m_metaData.album() != oldMetaData.album()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::AlbumTitle, m_metaData.album());
    } else if (m_metaData.track() != oldMetaData.track()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::TrackNumber, m_metaData.track());
    } else if (m_metaData.resolution() != oldMetaData.resolution()) {
        changed = true;
        emit metaDataChanged(QMediaMetaData::Resolution, m_metaData.resolution());
    }

    if (changed)
        emit metaDataChanged();

    const bool metaDataAvailable = isMetaDataAvailable();
    if (metaDataAvailable != oldMetaDataAvailable)
        emit metaDataAvailableChanged(metaDataAvailable);
}