/**

 * vim: set ts=4 :

 * ================================================================

 * SourceMod

 * Copyright (C) 2004-2007 AlliedModders LLC.  All rights reserved.

 * ================================================================

 *

 * This program is free software; you can redistribute it and/or 

 * modify it under the terms of the GNU General Public License, 

 * version 3.0, as published by the Free Software Foundation.

 * 

 * 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, see <http://www.gnu.org/licenses/>.

 *

 * As a special exception, AlliedModders LLC gives you permission to 

 * link the code of this program (as well as its derivative works) to 

 * "Half-Life 2," the "Source Engine," the "SourcePawn JIT," and any 

 * Game MODs that run on software by the Valve Corporation.  You must 

 * obey the GNU General Public License in all respects for all other 

 * code used. Additionally, AlliedModders LLC grants this exception 

 * to all derivative works. AlliedModders LLC defines further 

 * exceptions, found in LICENSE.txt (as of this writing, version 

 * JULY-31-2007), or <http://www.sourcemod.net/license.php>.

 *

 * Version: $Id$

 */

#ifndef _INCLUDE_SOURCEMOD_CUSERMESSAGES_H_

#define _INCLUDE_SOURCEMOD_CUSERMESSAGES_H_

#include "ShareSys.h"

#include <IUserMessages.h>

#include "sourcemm_api.h"

#include "sm_trie.h"

#include "CellRecipientFilter.h"

using namespace SourceHook;

using namespace SourceMod;

#define INVALID_MESSAGE_ID -1

struct ListenerInfo

{

	IUserMessageListener *Callback;

	bool IsHooked;

	bool KillMe;

};

typedef List<ListenerInfo *> MsgList;

typedef List<ListenerInfo *>::iterator MsgIter;

class UserMessages : 

	public IUserMessages,

	public SMGlobalClass

{

public:

	UserMessages();

	~UserMessages();

public: //SMGlobalClass

	void OnSourceModStartup(bool late);

	void OnSourceModAllInitialized();

	void OnSourceModAllShutdown();

public: //IUserMessages

	int GetMessageIndex(const char *msg);

	bool GetMessageName(int msgid, char *buffer, size_t maxlength) const;

	bool HookUserMessage(int msg_id, IUserMessageListener *pListener, bool intercept=false);

	bool UnhookUserMessage(int msg_id, IUserMessageListener *pListener, bool intercept=false);

	bf_write *StartMessage(int msg_id, cell_t players[], unsigned int playersNum, int flags);

	bool EndMessage();

public:

	bf_write *OnStartMessage_Pre(IRecipientFilter *filter, int msg_type);

	bf_write *OnStartMessage_Post(IRecipientFilter *filter, int msg_type);

	void OnMessageEnd_Pre();

	void OnMessageEnd_Post();

private:

	void _DecRefCounter();

private:

	List<ListenerInfo *> m_msgHooks[255];

	List<ListenerInfo *> m_msgIntercepts[255];

	CStack<ListenerInfo *> m_FreeListeners;

	unsigned char m_pBase[2500];

	IRecipientFilter *m_CurRecFilter;

	bf_write m_InterceptBuffer;

	bf_write *m_OrigBuffer;

	bf_read m_ReadBuffer;

	size_t m_HookCount;

	bool m_InHook;

	bool m_BlockEndPost;

	bool m_FallbackSearch;

	Trie *m_Names;

	CellRecipientFilter m_CellRecFilter;

	bool m_InExec;

	int m_CurFlags;

	int m_CurId;

};

extern UserMessages g_UserMsgs;

#endif //_INCLUDE_SOURCEMOD_CUSERMESSAGES_H_