#ifndef _TC_INTERFACE_H_
#define _TC_INTERFACE_H_

//=============================================================================
//
//	Common interface for BitTorrent clients.
//
//   File : tc_interface.h
//   Creation date : Fri Jan 1 15:42:25 2007 GMT by Alexander Stillich
//
//   This file is part of the KVirc irc client distribution
//   Copyright (C) 2001-2005 Szymon Stefanek (pragma at kvirc dot net)
//   Copyright (C) 2007 Alexander Stillich (torque at pltn dot org)
//
//   This program is FREE software. You can redistribute it and/or
//   modify it under the terms of the GNU General Public License
//   as published by the Free Software Foundation; either version 2
//   of the License, or (at your opinion) any later version.
//
//   This program is distributed in the HOPE that it will be USEFUL,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//   See the GNU General Public License for more details.
//
//   You should have received a copy of the GNU General Public License
//   along with this program. If not, write to the Free Software Foundation,
//   Inc. ,59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//=============================================================================

#include "kvi_settings.h"
#include "kvi_qstring.h"
#include <qobject.h>

class KviTorrentInterface : public QObject
{

public:

	KviTorrentInterface() {}
	virtual ~KviTorrentInterface() {}

	virtual int detect() = 0;

	// returns number of torrents in client
	virtual int count()=0;
	
/*
	// path of torrent file
	virtual QCString getTorrentFile(int i)=0;

	// directory where data is downloaded to
	virtual QCString getTorrentDataDir(int i)=0;
*/
	// number of files in torrent
	virtual int fileCount(int i)=0;
	// name of file in torrent
	virtual QString fileName(int i, int file)=0;
	// returns file priority (low, normal, high)
	virtual QString filePriority(int i, int file)=0;
	// sets file priority
	virtual bool setFilePriority(int i, int file, const QString &prio)=0;

	virtual bool start(int i)=0;
	virtual bool stop(int i)=0;

	virtual bool announce(int i)=0;

	virtual bool startAll()=0;
	virtual bool stopAll()=0;
/*
	// remove torrent from client
	virtual bool removeTorrent(int i)=0;
	
	virtual bool addTorrent(const QCString &mrl);
*/
	// returns state of torrent number i (Stopped, Stalled, Seeding, Downloading)
	// this uses getTorrentInfo() to obtain the state and then
	// returns it as string
	virtual QString state(int i)=0;

	// name of torrent as displayed in client
	// uses getTorrentInfo()
	virtual QString name(int i)=0;

	virtual float speedUp()=0;
	virtual float speedDown()=0;

	virtual float trafficUp()=0;
	virtual float trafficDown()=0;

	virtual int maxUploadSpeed()=0;
	virtual int maxDownloadSpeed()=0;

	virtual bool setMaxUploadSpeed(int kbytes_per_sec)=0;
	virtual bool setMaxDownloadSpeed(int kbytes_per_sec)=0;

	QString lastError() { return m_lastError; }

	static void select(KviTorrentInterface *i) { m_selected = i; }
	static KviTorrentInterface *selected() { return m_selected; }

protected:

	QString	m_lastError;

	static KviTorrentInterface *m_selected; 
};

class KviTorrentInterfaceDescriptor
{
public:
	KviTorrentInterfaceDescriptor() {};
	virtual ~KviTorrentInterfaceDescriptor() {};
public:
	virtual const QString & name() = 0;
	virtual const QString & description() = 0;
	virtual KviTorrentInterface * instance() = 0;
};

#define TORR_DECLARE_DESCRIPTOR(_interfaceclass) \
	class _interfaceclass ## Descriptor : public KviTorrentInterfaceDescriptor \
	{ \
	public: \
		_interfaceclass ## Descriptor(); \
		virtual ~_interfaceclass ## Descriptor(); \
	protected: \
		_interfaceclass * m_pInstance; \
		QString m_szName; \
		QString m_szDescription; \
	public: \
		virtual const QString & name(); \
		virtual const QString & description(); \
		virtual KviTorrentInterface * instance(); \
	};

#define TORR_IMPLEMENT_DESCRIPTOR(_interfaceclass,_name,_description) \
	_interfaceclass ## Descriptor::_interfaceclass ## Descriptor() \
	: KviTorrentInterfaceDescriptor() \
	{ \
		m_pInstance = 0; \
		m_szName = _name; \
		m_szDescription = _description; \
	} \
	_interfaceclass ## Descriptor::~_interfaceclass ## Descriptor() \
	{ \
		delete m_pInstance; \
	} \
	const QString & _interfaceclass ## Descriptor::name() \
	{ \
		return m_szName; \
	} \
	const QString & _interfaceclass ## Descriptor::description() \
	{ \
		return m_szDescription; \
	} \
	KviTorrentInterface * _interfaceclass ## Descriptor::instance() \
	{ \
		if (!m_pInstance) m_pInstance = new _interfaceclass(); \
		return m_pInstance; \
	}

#endif // _TC_INTERFACE_H_

