/**

* vim: set ts=4 :

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

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

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

*

* This file is not open source and may not be copied without explicit

* written permission of AlliedModders LLC.  This file may not be redistributed 

* in whole or significant part.

* For information, see LICENSE.txt 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 OnSourceModAllInitialized();

	void OnSourceModAllShutdown();

public: //IUserMessages

	int GetMessageIndex(const char *msg);

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

	Trie *m_Names;

	CellRecipientFilter m_CellRecFilter;

	bool m_InExec;

	int m_CurFlags;

	int m_CurId;

};

extern UserMessages g_UserMsgs;

#endif //_INCLUDE_SOURCEMOD_CUSERMESSAGES_H_