/**

 * vim: set ts=4 sw=4 tw=99 noet :

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

 * SourceMod

 * Copyright (C) 2004-2008 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_CONCMDMANAGER_H_

#define _INCLUDE_SOURCEMOD_CONCMDMANAGER_H_

#include "sm_globals.h"

#include "sourcemm_api.h"

#include <IForwardSys.h>

#include <sh_list.h>

#include <sh_string.h>

#include <IRootConsoleMenu.h>

#include <IAdminSystem.h>

#include "concmd_cleaner.h"

#include <sm_stringhashmap.h>

#include <am-utility.h>

#include <am-inlinelist.h>

#include <am-linkedlist.h>

#include <am-refcounting.h>

using namespace SourceHook;

struct CmdHook;

struct ConCmdInfo;

struct CommandGroup : public ke::Refcounted<CommandGroup>

{

	ke::LinkedList<CmdHook *> hooks;

};

struct AdminCmdInfo

{

	AdminCmdInfo(const ke::Ref<CommandGroup> &group, FlagBits flags)

		: group(group),

		  flags(flags),

		  eflags(0)

	{

	}

	ke::Ref<CommandGroup> group;

	FlagBits flags;			/* default flags */

	FlagBits eflags;		/* effective flags */

};

struct CmdHook : public ke::InlineListNode<CmdHook>

{

	enum Type {

		Server,

		Client

	};

	CmdHook(Type type, ConCmdInfo *cmd, IPluginFunction *fun, const char *description)

		: type(type),

		  info(cmd),

		  pf(fun),

		  helptext(description)

	{

	}

	Type type;

	ConCmdInfo *info;

	IPluginFunction *pf;				/* function hook */

	ke::AString helptext;				/* help text */

	ke::AutoPtr<AdminCmdInfo> admin;	/* admin requirements, if any */

};

typedef ke::InlineList<CmdHook> CmdHookList;

struct ConCmdInfo

{

	ConCmdInfo()

	{

		sourceMod = false;

		pCmd = NULL;

		eflags = 0;

	}

	bool sourceMod;					/**< Determines whether or not concmd was created by a SourceMod plugin */

	ConCommand *pCmd;				/**< Pointer to the command itself */

	CmdHookList hooks;				/**< Hook list */

	FlagBits eflags;				/**< Effective admin flags */

};

typedef List<ConCmdInfo *> ConCmdList;

class ConCmdManager :

	public SMGlobalClass,

	public IRootConsoleCommand,

	public IPluginsListener,

	public IConCommandTracker

{

#if SOURCE_ENGINE == SE_DOTA

	friend void CommandCallback(const CCommandContext &context, const CCommand &command);

#elif SOURCE_ENGINE >= SE_ORANGEBOX

	friend void CommandCallback(const CCommand &command);

#else

	friend void CommandCallback();

#endif

public:

	ConCmdManager();

	~ConCmdManager();

public: //SMGlobalClass

	void OnSourceModAllInitialized();

	void OnSourceModShutdown();

public: //IPluginsListener

	void OnPluginDestroyed(IPlugin *plugin);

public: //IRootConsoleCommand

	void OnRootConsoleCommand(const char *cmdname, const CCommand &command);

public: //IConCommandTracker

	void OnUnlinkConCommandBase(ConCommandBase *pBase, const char *name, bool is_read_safe);

public:

	bool AddServerCommand(IPluginFunction *pFunction, const char *name, const char *description, int flags);

	bool AddAdminCommand(IPluginFunction *pFunction, 

						 const char *name, 

						 const char *group,

						 int adminflags,

						 const char *description, 

						 int flags);

	ResultType DispatchClientCommand(int client, const char *cmd, int args, ResultType type);

	void UpdateAdminCmdFlags(const char *cmd, OverrideType type, FlagBits bits, bool remove);

	bool LookForSourceModCommand(const char *cmd);

	bool LookForCommandAdminFlags(const char *cmd, FlagBits *pFlags);

	bool CheckClientCommandAccess(int client, const char *cmd, FlagBits flags);

	bool CheckAdminCommandAccess(AdminId adm, const char *cmd, FlagBits flags);

private:

	void InternalDispatch(const CCommand &command);

	ResultType RunAdminCommand(ConCmdInfo *pInfo, int client, int args);

	ConCmdInfo *AddOrFindCommand(const char *name, const char *description, int flags);

	void SetCommandClient(int client);

	void AddToCmdList(ConCmdInfo *info);

	void RemoveConCmd(ConCmdInfo *info, const char *cmd, bool is_read_safe, bool untrack);

	bool CheckAccess(int client, const char *cmd, AdminCmdInfo *pAdmin);

	// Case insensitive

	ConCmdList::iterator FindInList(const char *name);

	// Case sensitive

	ConCmdInfo *FindInTrie(const char *name);

public:

	inline int GetCommandClient()

	{

		return m_CmdClient;

	}

	inline const List<ConCmdInfo *> & GetCommandList()

	{

		return m_CmdList;

	}

private:

	typedef StringHashMap<ke::Ref<CommandGroup> > GroupMap;

	StringHashMap<ConCmdInfo *> m_Cmds; /* command lookup */

	GroupMap m_CmdGrps;				/* command group map */

	ConCmdList m_CmdList;			/* command list */

	int m_CmdClient;				/* current client */

};

extern ConCmdManager g_ConCmds;

#endif // _INCLUDE_SOURCEMOD_CONCMDMANAGER_H_