/***************************************************************************
 *   Copyright (C) 2008 by Joris Guisson and Ivan Vasic                    *
 *   joris.guisson@gmail.com                                               *
 *   ivasic@gmail.com                                                      *
 *                                                                         *
 *   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 option) 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.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 ***************************************************************************/
#include <QXmlStreamWriter>
#include <util/sha1hash.h>
#include <util/functions.h>
#include <torrent/queuemanager.h>
#include <interfaces/coreinterface.h>
#include <interfaces/torrentinterface.h>
#include "httpserver.h"
#include "torrentlistgenerator.h"
#include "httpresponseheader.h"
#include "httpclienthandler.h"

using namespace bt;

namespace kt
{

	TorrentListGenerator::TorrentListGenerator(CoreInterface *core,HttpServer* server) 
		: WebContentGenerator(server,"/data/torrents.xml",LOGIN_REQUIRED),core(core)
	{
	}


	TorrentListGenerator::~TorrentListGenerator()
	{
	}


	void TorrentListGenerator::get(HttpClientHandler* hdlr, const QHttpRequestHeader& hdr)
	{
		Q_UNUSED(hdr);
		HttpResponseHeader rhdr(200);
		server->setDefaultResponseHeaders(rhdr,"text/xml",true);
		
		QByteArray output_data;
		QXmlStreamWriter out(&output_data);
		out.setAutoFormatting(true);
		out.writeStartDocument();
		out.writeStartElement("torrents");
		kt::QueueManager* qman = core->getQueueManager();
		kt::QueueManager::iterator i = qman->begin();
		while (i != qman->end())
		{
			bt::TorrentInterface* ti = *i;
			const bt::TorrentStats & s = ti->getStats();
			out.writeStartElement("torrent");
			writeElement(out,"name",ti->getDisplayName());
			writeElement(out,"info_hash",ti->getInfoHash().toString());
			writeElement(out,"status",ti->statusToString());
			writeElement(out,"bytes_downloaded",BytesToString(s.bytes_downloaded));
			writeElement(out,"bytes_uploaded",BytesToString(s.bytes_uploaded));
			writeElement(out,"total_bytes",BytesToString(s.total_bytes));
			writeElement(out,"total_bytes_to_download",BytesToString(s.total_bytes_to_download));
			writeElement(out,"download_rate",BytesPerSecToString(s.download_rate));
			writeElement(out,"upload_rate",BytesPerSecToString(s.upload_rate));
			writeElement(out,"num_peers",QString::number(s.num_peers));
			writeElement(out,"seeders",QString::number(s.seeders_connected_to));
			writeElement(out,"seeders_total",QString::number(s.seeders_total));
			writeElement(out,"leechers",QString::number(s.leechers_connected_to));
			writeElement(out,"leechers_total",QString::number(s.leechers_total));
			writeElement(out,"running",s.running ? "1" : "0");
			writeElement(out,"percentage",QString::number(Percentage(s),'f',2));
			writeElement(out,"num_files",QString::number(ti->getNumFiles()));
			out.writeEndElement();
			i++;
		}
		out.writeEndElement();
		out.writeEndDocument();
		hdlr->send(rhdr,output_data);
	}

	void TorrentListGenerator::writeElement(QXmlStreamWriter & out,const QString & name,const QString & value)
	{
		out.writeStartElement(name);
		out.writeCharacters(value);
		out.writeEndElement();
	}
	
	void TorrentListGenerator::post(HttpClientHandler* hdlr, const QHttpRequestHeader& hdr, const QByteArray& data)
	{
		Q_UNUSED(data);
		get(hdlr,hdr);
	}
}
