/*
 *  xfirelib - C++ Library for the xfire protocol.
 *  Copyright (C) 2006 by
 *          Beat Wolf <asraniel@fryx.ch> / http://gfire.sf.net
 *          Herbert Poul <herbert.poul@gmail.com> / http://goim.us
 *    http://xfirelib.sphene.net
 *
 *  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 St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include "stdafx.h"

#include <iostream>
#include <stdlib.h>
#include <string.h>
#include "xfirepacket.h"

#include "xdebug.h"

#include "socketexception.h"

using namespace std;

namespace xfirelib
{
	XFirePacket::XFirePacket(PacketReader *reader)
	{
		this->reader = reader;
		this->content = NULL;
	}

	XFirePacket::XFirePacket(XFirePacketContent *content)
	{
		this->content = content;
		this->reader = NULL;
	}

	XFirePacket::~XFirePacket()
	{
	}

	void XFirePacket::recvPacket(Socket *socket)
	{
		char buf[5];

		if (socket == NULL) return;

		int r = socket->recv(buf, 5);
		int missingbytes = 5 - r;
		if (missingbytes != 0) {
			XERROR3("Returned only %d bytes try last %d bytes again ?!: \n", r, missingbytes);
			r += socket->recv(&buf[r], missingbytes);
		}
		if (r != 5) {
			XERROR2("Returned less than 5 ?!: %d\n", r);
			throw SocketException("Connection Closed ?");
		}
		XDEBUG2("Read %d bytes...\n", r);
		unsigned int len = ((unsigned char)buf[0]) + (((unsigned char)buf[1]) * 256);

		int packetid = buf[2];
		int numberOfAtts = (unsigned char)buf[4];

		char* contentbuf = new char[len - 5];
		XDEBUG2("calling socket->recv(contentbuf,%d)\n", len - 5);
		int r2 = socket->recv(contentbuf, len - 5);


		char* ncontentbuf = contentbuf + r2;
		int nsize = len - 5 - r2;
		int dummyi = 0;
		//packet solang auslesen, bis fertig - dufte
		while (nsize > 0) {
			dummyi++;
			XDEBUG2("nsize: %d\n", nsize);
			r2 = socket->recv(ncontentbuf, nsize);
			ncontentbuf = ncontentbuf + r2;
			nsize -= r2;
			XDEBUG5("packetid: %d numberOfAtts: %d length: %d Got: %d\n", (unsigned char)packetid, numberOfAtts, len - 5, len - 5 - nsize);
		}

		XDEBUG5("packetid: %d numberOfAtts: %d length: %d Got: %d\n", (unsigned char)packetid, numberOfAtts, len - 5, r2);

		if (r2 < 1) return;

		XFirePacketContent *contentClass = reader->getPacketContentClass((unsigned char)packetid);

		if (contentClass == NULL) {
			XERROR2("NO SUCH CONTENT PACKET (%d) :(\n", (unsigned char)packetid);
			return;
		}
		XDEBUG(("Creating ContentClass Instance\n"));
		content = contentClass->newPacket();

		XDEBUG(("Parse Content\n"));
		//statt r2 wird jetzt die komplette länge des packets genommen, also len-5 dufte 
		content->parseContent(contentbuf, len - 5, numberOfAtts);
	}

	void XFirePacket::sendPacket(Socket *socket)
	{
		int size = content->getPacketSize();
		char *buf = (char*)malloc(size * sizeof(char));
		XDEBUG3("Allocated %d characters (%d)\n", size, sizeof(char));
		int rsize = content->getPacketContent(buf);
		XDEBUG2("Real Size: %d\n", rsize);
		int realsize = rsize + 5;
		char *sendbuf = (char*)malloc(realsize * sizeof(char));
		sendbuf[0] = realsize % 256;
		sendbuf[1] = (int)realsize / 256;
		sendbuf[2] = content->getPacketId();
		XDEBUG2("Send Content Id: %d\n", content->getPacketId());
		sendbuf[3] = 0;
		sendbuf[4] = content->getPacketAttributeCount();
		memcpy(sendbuf + 5, buf, rsize);

		socket->send(sendbuf, realsize);

		free(buf); free(sendbuf);
	}
}