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#include "mediaobject.h"

#include "backend.h"

#include <QtCore>

#include <QtCore/QTimer>

#include <QtCore/QVector>

#include <QtCore/QFile>

#include <QtCore/QByteRef>

#include <QtCore/QStringList>

#include <QtCore/QEvent>

#include <QApplication>

QT_BEGIN_NAMESPACE

namespace Phonon

{

namespace Dummy

{

static const char* riffId = "RIFF";

MediaObject::MediaObject(Backend *backend, QObject *parent)

        : QObject(parent)

          , m_resumeState(false)

          , m_oldState(Phonon::LoadingState)

          , m_oldPos(0)

          , currentPos(0)

{

    Q_UNUSED(backend)

    m_error = Phonon::NoError;

    m_tickInterval = 100; // 100ms

    m_totalTime = 26000; // 26s

    m_prefinishMark = 0;

    m_transitionTime = 100; //100ms

    m_hasVideo = false;

    m_prefinishMarkReachedNotEmitted = true;

    m_aboutToFinishEmitted = false;

    m_pendingState = Phonon::LoadingState;

    m_state = Phonon::LoadingState;

    m_pendingState = Phonon::LoadingState;

    m_tickTimer = new QTimer(this);

    connect(m_tickTimer, SIGNAL(timeout()), SLOT(emitTick()));

}

MediaObject::~MediaObject()

{

    delete m_tickTimer;

}

QString stateString(const Phonon::State &state)

{

    switch (state) {

        case Phonon::LoadingState:

            return QString("LoadingState");

        case Phonon::StoppedState:

            return QString("StoppedState");

        case Phonon::PlayingState:

            return QString("PlayingState");

        case Phonon::BufferingState:

            return QString("BufferingState");

        case Phonon::PausedState:

            return QString("PausedState");

        case Phonon::ErrorState:

            return QString("ErrorState");

    }

    return QString();

}

void MediaObject::saveState()

{

    if (m_resumeState)

        return;

    if (m_pendingState == Phonon::PlayingState || m_pendingState == Phonon::PausedState) {

        m_resumeState = true;

        m_oldState = m_pendingState;

        m_oldPos = currentPos;

    }

}

void MediaObject::resumeState()

{

    if (m_resumeState)

        QMetaObject::invokeMethod(this, "setState", Qt::QueuedConnection, Q_ARG(State, m_oldState));

}

/**

 * !reimp

 */

State MediaObject::state() const

{

    return m_state;

}

/**

 * !reimp

 */

bool MediaObject::hasVideo() const

{

    return m_hasVideo;

}

/**

 * !reimp

 */

bool MediaObject::isSeekable() const

{

    return true;

}

/**

 * !reimp

 */

qint64 MediaObject::currentTime() const

{

    if (m_resumeState)

        return m_oldPos;

    switch (state()) {

    case Phonon::PausedState:

    case Phonon::BufferingState:

    case Phonon::PlayingState:

        return currentPos;

    case Phonon::StoppedState:

    case Phonon::LoadingState:

        return 0;

    case Phonon::ErrorState:

        break;

    }

    return -1;

}

/**

 * !reimp

 */

qint32 MediaObject::tickInterval() const

{

    return m_tickInterval;

}

/**

 * !reimp

 */

void MediaObject::setTickInterval(qint32 newTickInterval)

{

    m_tickInterval = newTickInterval;

    if (m_tickInterval <= 0) {

        m_tickTimer->setInterval(100);

    } else

        m_tickTimer->setInterval(newTickInterval);

}

/**

 * !reimp

 */

void MediaObject::play()

{

    if(m_state == Phonon::PlayingState)

        return;

    if(m_state == Phonon::ErrorState)

        return;

    if(m_state != Phonon::PausedState)

        m_tickTimer->stop();

    m_prefinishMarkReachedNotEmitted = true;

    m_aboutToFinishEmitted = false;

    setState(Phonon::PlayingState);

    m_resumeState = false;

    m_tickTimer->start();

}

/**

 * !reimp

 */

QString MediaObject::errorString() const

{

    return m_errorString;

}

/**

 * !reimp

 */

Phonon::ErrorType MediaObject::errorType() const

{

    return m_error;

}

void MediaObject::setState(State newstate)

{

    if (m_state == newstate)

        return;

    switch (newstate) {

        case Phonon::PausedState:

            m_pendingState = Phonon::PausedState;

            emit stateChanged(newstate, m_state);

            m_state = newstate;

            break;

        case Phonon::StoppedState:

            m_pendingState = Phonon::StoppedState;

            emit stateChanged(newstate, m_state);

            m_state = newstate;

            break;

        case Phonon::PlayingState:

            m_pendingState = Phonon::PlayingState;

            emit stateChanged(newstate, m_state);

            m_state = newstate;

            break;

        case Phonon::ErrorState:

            emit stateChanged(newstate, m_state);

            m_state = newstate;

            break;

        case Phonon::BufferingState:

        case Phonon::LoadingState:

            emit stateChanged(newstate, m_state);

            m_state = newstate;

            break;

    }

}

qint64 MediaObject::totalTime() const

{

    return m_totalTime;

}

qint32 MediaObject::prefinishMark() const

{

    return m_prefinishMark;

}

qint32 MediaObject::transitionTime() const

{

    return m_transitionTime;

}

void MediaObject::setTransitionTime(qint32 time)

{

    m_transitionTime = time;

}

qint64 MediaObject::remainingTime() const

{

    if(currentTime() > totalTime())

        return 0;

    return totalTime() - currentTime();

}

MediaSource MediaObject::source() const

{

    return m_source;

}

void MediaObject::setNextSource(const MediaSource &source)

{

    if (source.type() == MediaSource::Invalid &&

        source.type() == MediaSource::Empty)

        return;

    m_nextSource = source;

}

/*

 * !reimp

 */

void MediaObject::setSource(const MediaSource &source)

{

    QMultiMap<QString, QString> ret;

    ret.insert(QLatin1String("ARTIST"), "Nokia Dude");

    ret.insert(QLatin1String("ALBUM"), "Sound of silence");

    ret.insert(QLatin1String("DATE"), "2009");

    m_error = Phonon::NoError;

    setState(Phonon::LoadingState);

    m_source = source;

    currentPos = 0;

    if((source.fileName().contains(".avi")) ||

       (source.fileName().contains(".mp4"))) {

        m_hasVideo = true;

        emit hasVideoChanged(m_hasVideo);

    }

    if(source.fileName().contains(".wav")) {

        QFile file(source.fileName());

        if (file.open(QIODevice::ReadOnly)) {

            int len = file.read((char*)&header, sizeof(CombinedHeader));

            if(len == sizeof(CombinedHeader)) {

                if(memcmp(&header.riff.descriptor.id, riffId, 4) != 0) {

                    // Not a valid wav file, to satisfy unit test for mediaobject

                    m_error = Phonon::FatalError;

                    //m_state = Phonon::ErrorState;

                    m_errorString = "Invalid wav file";

                    setState(Phonon::ErrorState);

                    file.close();

                    return;

                }

            }

            file.close();

        }

    }

    emit metaDataChanged(ret);

    emit currentSourceChanged(source);

    emit totalTimeChanged(m_totalTime);

    setState(Phonon::StoppedState);

}

void MediaObject::setPrefinishMark(qint32 newPrefinishMark)

{

    m_prefinishMark = newPrefinishMark;

    if (currentTime() < totalTime() - m_prefinishMark) // not about to finish

        m_prefinishMarkReachedNotEmitted = true;

}

void MediaObject::pause()

{

    if (state() != Phonon::PausedState)

        setState(Phonon::PausedState);

    m_resumeState = false;

    m_tickTimer->stop();

}

void MediaObject::stop()

{

    if (state() != Phonon::StoppedState) {

        if(m_state != Phonon::ErrorState) {

            setState(Phonon::StoppedState);

        }

        m_prefinishMarkReachedNotEmitted = true;

    }

    m_resumeState = false;

    m_tickTimer->stop();

}

void MediaObject::emitTick()

{

    if (m_resumeState) {

        return;

    }

    if(m_tickInterval > 0)

        currentPos += m_tickInterval;

    else

        currentPos += 100;

    qint64 currentTime = currentPos;

    qint64 totalTime = m_totalTime;

    if (m_tickInterval > 0 && currentTime != m_previousTickTime) {

        emit tick(currentTime);

        m_previousTickTime = currentTime;

    }

    if (m_state == Phonon::PlayingState) {

        if (currentTime >= totalTime - m_prefinishMark) {

            if (m_prefinishMarkReachedNotEmitted) {

                m_prefinishMarkReachedNotEmitted = false;

                emit prefinishMarkReached(totalTime - currentTime);

            }

        }

        // Prepare load of next source

        if (currentTime >= totalTime - 500) {

            if (!m_aboutToFinishEmitted) {

                m_aboutToFinishEmitted = true; // track is about to finish

                emit aboutToFinish();

            }

        }

        if(currentTime >= totalTime) {

            m_tickTimer->stop();

            if(m_nextSource.type() != MediaSource::Invalid &&

                    m_nextSource.type() != MediaSource::Empty) {

                setSource(m_nextSource);

                m_nextSource = MediaSource();

                m_pendingState = Phonon::PlayingState;

            } else {

                setState(Phonon::PausedState);

                currentPos = 0;

                emit finished();

            }

        }

    }

}

void MediaObject::seek(qint64 time)

{

    // We will assume no buffering in the object so this is not needed.

    currentPos = time;

}

} // ns Dummy

} // ns Phonon

QT_END_NAMESPACE

#include "moc_mediaobject.cpp"