/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the examples of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:BSD$

** You may use this file under the terms of the BSD license as follows:

**

** "Redistribution and use in source and binary forms, with or without

** modification, are permitted provided that the following conditions are

** met:

**   * Redistributions of source code must retain the above copyright

**     notice, this list of conditions and the following disclaimer.

**   * Redistributions in binary form must reproduce the above copyright

**     notice, this list of conditions and the following disclaimer in

**     the documentation and/or other materials provided with the

**     distribution.

**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor

**     the names of its contributors may be used to endorse or promote

**     products derived from this software without specific prior written

**     permission.

**

** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef TRACKERCLIENT_H

#define TRACKERCLIENT_H

#include <QByteArray>

#include <QList>

#include <QObject>

#include <QHostAddress>

#include <QHttp>

#include "metainfo.h"

#include "torrentclient.h"

class TorrentClient;

class TrackerClient : public QObject

{

    Q_OBJECT

public:

    TrackerClient(TorrentClient *downloader, QObject *parent = 0);

    void start(const MetaInfo &info);

    void stop();

    void startSeeding();

signals:

    void connectionError(QHttp::Error error);

    void failure(const QString &reason);

    void warning(const QString &message);

    void peerListUpdated(const QList<TorrentPeer> &peerList);

    void uploadCountUpdated(qint64 newUploadCount);

    void downloadCountUpdated(qint64 newDownloadCount);

    void stopped();

protected:

    void timerEvent(QTimerEvent *event);

private slots:

    void fetchPeerList();

    void httpRequestDone(bool error);

private:

    TorrentClient *torrentDownloader;

    int requestInterval;

    int requestIntervalTimer;

    QHttp http;

    MetaInfo metaInfo;

    QByteArray trackerId;

    QList<TorrentPeer> peers;

    qint64 uploadedBytes;

    qint64 downloadedBytes;

    qint64 length;

    bool firstTrackerRequest;

    bool lastTrackerRequest;

    bool firstSeeding;

};

#endif