/***************************************************************************
 *   Copyright (C) 2005-2007 by Joris Guisson                              *
 *   joris.guisson@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 <QTimer>
#include <QHostAddress>
#include <QStringList>
#include <klocale.h>
#include <util/log.h>
#include "httprequest.h"

using namespace bt;


namespace kt 
{

	HTTPRequest::HTTPRequest(const QString & hdr,const QString & payload,const QString & host,Uint16 port,bool verbose) 
		: hdr(hdr),payload(payload),verbose(verbose),host(host),port(port),finished(false)
	{
		sock = new QTcpSocket(this);
		connect(sock,SIGNAL(readyRead()),this,SLOT(onReadyRead()));
		connect(sock,SIGNAL(error(QAbstractSocket::SocketError)),this,SLOT(onError(QAbstractSocket::SocketError )));
		connect(sock,SIGNAL(connected()),this, SLOT(onConnect()));
	}
	
	
	HTTPRequest::~HTTPRequest()
	{
		sock->close();
	}
	
	void HTTPRequest::start()
	{
		sock->connectToHost(host,port);
		QTimer::singleShot(30000,this,SLOT(onTimeout()));
	}
	
	void HTTPRequest::cancel()
	{
		finished = true;
		sock->close();
	}
	
	void HTTPRequest::onConnect()
	{
		if (finished)
			return;
		
		payload = payload.replace("$LOCAL_IP",sock->localAddress().toString());
		hdr = hdr.replace("$CONTENT_LENGTH",QString::number(payload.length()));
			
		QString req = hdr + payload;
		if (verbose)
		{
			Out(SYS_PNP|LOG_DEBUG) << "Sending " << endl;
			QStringList lines = hdr.split("\r\n");
			foreach (const QString &line,lines)
				Out(SYS_PNP|LOG_DEBUG) << line << endl;
			
			Out(SYS_PNP|LOG_DEBUG) << payload << endl;
		}

		sock->write(req.toAscii());
	}
	
	void HTTPRequest::onReadyRead()
	{
		if (finished)
			return;
		
		Uint32 ba = sock->bytesAvailable();
		if (ba == 0)
		{
			if (!finished)
				error(this,i18n("Connection closed unexpectedly."));
			sock->close();
			return;
		}
			
		QString data = QString::fromAscii(sock->read(ba));
		QStringList sl = data.split("\r\n");	
		
		if (verbose)
		{
			Out(SYS_PNP|LOG_DEBUG) << "Got reply : " << endl;
			foreach (const QString &line,sl)
				Out(SYS_PNP|LOG_DEBUG) << line << endl;
		}
		
		if (sl.first().contains("HTTP") && sl.first().contains("200"))
		{
			// emit reply OK
			replyOK(this,sl.last());
		}
		else
		{
			// emit reply error
			replyError(this,sl.last());
		}
		finished = true;
		operationFinished(this);
	}
	
	void HTTPRequest::onError(QAbstractSocket::SocketError err)
	{
		if (finished)
			return;
		
		Out(SYS_PNP|LOG_DEBUG) << "HTTPRequest error : " << sock->errorString() << endl;
		error(this,sock->errorString());
		sock->close();
		operationFinished(this);
	}
	
	void HTTPRequest::onTimeout()
	{
		if (finished)
			return;
		
		Out(SYS_PNP|LOG_DEBUG) << "HTTPRequest timeout" << endl;
		error(this,i18n("Timeout occurred"));
		sock->close();
		operationFinished(this);
	}


}
#include "httprequest.moc"
