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#include "qlocalmediaplaylistprovider.h"

#include "qmediaplaylistprovider_p.h"

#include "qmediacontent.h"

QT_BEGIN_NAMESPACE

class QLocalMediaPlaylistProviderPrivate: public QMediaPlaylistProviderPrivate

{

public:

    QList<QMediaContent> resources;

};

QLocalMediaPlaylistProvider::QLocalMediaPlaylistProvider(QObject *parent)

    :QMediaPlaylistProvider(*new QLocalMediaPlaylistProviderPrivate, parent)

{

}

QLocalMediaPlaylistProvider::~QLocalMediaPlaylistProvider()

{

}

bool QLocalMediaPlaylistProvider::isReadOnly() const

{

    return false;

}

int QLocalMediaPlaylistProvider::mediaCount() const

{

    return d_func()->resources.size();

}

QMediaContent QLocalMediaPlaylistProvider::media(int pos) const

{

    return d_func()->resources.value(pos);

}

bool QLocalMediaPlaylistProvider::addMedia(const QMediaContent &content)

{

    Q_D(QLocalMediaPlaylistProvider);

    int pos = d->resources.count();

    emit mediaAboutToBeInserted(pos, pos);

    d->resources.append(content);

    emit mediaInserted(pos, pos);

    return true;

}

bool QLocalMediaPlaylistProvider::addMedia(const QList<QMediaContent> &items)

{

    Q_D(QLocalMediaPlaylistProvider);

    if (items.isEmpty())

        return true;

    int pos = d->resources.count();

    int end = pos+items.count()-1;

    emit mediaAboutToBeInserted(pos, end);

    d->resources.append(items);

    emit mediaInserted(pos, end);

    return true;

}

bool QLocalMediaPlaylistProvider::insertMedia(int pos, const QMediaContent &content)

{

    Q_D(QLocalMediaPlaylistProvider);

    emit mediaAboutToBeInserted(pos, pos);

    d->resources.insert(pos, content);

    emit mediaInserted(pos,pos);

    return true;

}

bool QLocalMediaPlaylistProvider::insertMedia(int pos, const QList<QMediaContent> &items)

{

    Q_D(QLocalMediaPlaylistProvider);

    if (items.isEmpty())

        return true;

    const int last = pos+items.count()-1;

    emit mediaAboutToBeInserted(pos, last);

    for (int i=0; i<items.count(); i++)

        d->resources.insert(pos+i, items.at(i));

    emit mediaInserted(pos, last);

    return true;

}

bool QLocalMediaPlaylistProvider::removeMedia(int fromPos, int toPos)

{

    Q_D(QLocalMediaPlaylistProvider);

    Q_ASSERT(fromPos >= 0);

    Q_ASSERT(fromPos <= toPos);

    Q_ASSERT(toPos < mediaCount());

    emit mediaAboutToBeRemoved(fromPos, toPos);

    d->resources.erase(d->resources.begin()+fromPos, d->resources.begin()+toPos+1);

    emit mediaRemoved(fromPos, toPos);

    return true;

}

bool QLocalMediaPlaylistProvider::removeMedia(int pos)

{

    Q_D(QLocalMediaPlaylistProvider);

    emit mediaAboutToBeRemoved(pos, pos);

    d->resources.removeAt(pos);

    emit mediaRemoved(pos, pos);

    return true;

}

bool QLocalMediaPlaylistProvider::clear()

{

    Q_D(QLocalMediaPlaylistProvider);

    if (!d->resources.isEmpty()) {

        int lastPos = mediaCount()-1;

        emit mediaAboutToBeRemoved(0, lastPos);

        d->resources.clear();

        emit mediaRemoved(0, lastPos);

    }

    return true;

}

void QLocalMediaPlaylistProvider::shuffle()

{

    Q_D(QLocalMediaPlaylistProvider);

    if (!d->resources.isEmpty()) {

        QList<QMediaContent> resources;

        while (!d->resources.isEmpty()) {

            resources.append(d->resources.takeAt(qrand() % d->resources.size()));

        }

        d->resources = resources;

        emit mediaChanged(0, mediaCount()-1);

    }

}

#include "moc_qlocalmediaplaylistprovider.cpp"

QT_END_NAMESPACE