/**

 * 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_GAMECONFIG_SYSTEM_H_

#define _INCLUDE_SOURCEMOD_GAMECONFIG_SYSTEM_H_

#include <IShareSys.h>

#include <IHandleSys.h>

/**

 * @file IGameConfigs.h

 * @brief Abstracts game private data configuration.

 */

#define SMINTERFACE_GAMECONFIG_NAME			"IGameConfigManager"

#define SMINTERFACE_GAMECONFIG_VERSION		3

class SendProp;

namespace SourceMod

{

	/**

	 * @brief Describes a game private data config file

	 */

	class IGameConfig

	{

	public:

		/**

		 * @brief Returns an offset value.

		 *

		 * @param key			Key to retrieve from the offset section.

		 * @param value			Pointer to store the offset value in.

		 * @return				True if found, false otherwise.

		 */

		virtual bool GetOffset(const char *key, int *value) =0;

		/**

		 * @brief Returns information about a dynamic offset.

		 *

		 * @param key			Key to retrieve from the property section.

		 * @return				A SendProp pointer, or NULL if not found.

		 */

		virtual SendProp *GetSendProp(const char *key) =0;

		/**

		 * @brief Returns the value of a key from the "Keys" section.

		 *

		 * @param key			Key to retrieve from the Keys section.

		 * @return				String containing the value, or NULL if not found.

		 */

		virtual const char *GetKeyValue(const char *key) =0;

		/**

		 * @brief Retrieves a cached memory signature.

		 *

		 * @param key			Name of the signature.

		 * @param addr			Pointer to store the memory address in.

		 * @return				True if the key was found, false otherwise.

		 *						Note that true is a valid return even if the

		 *						address is NULL.

		 */

		virtual bool GetMemSig(const char *key, void **addr) =0;

	};

	/**

	 * @brief Manages game config files

	 */

	class IGameConfigManager : public SMInterface

	{

	public:

		const char *GetInterfaceName()

		{

			return SMINTERFACE_GAMECONFIG_NAME;

		}

		unsigned int GetInterfaceVersion()

		{

			return SMINTERFACE_GAMECONFIG_VERSION;

		}

	public:

		/**

		 * @brief Loads or finds an already loaded game config file.  

		 *

		 * @param file		File to load.  The path must be relative to the 

		 *					'gamedata' folder and the extension should be 

		 *					omitted.

		 * @param pConfig	Pointer to store the game config pointer.  Pointer 

		 *					will be valid even on failure.

		 * @param error		Optional error message buffer.

		 * @param maxlength	Maximum length of the error buffer.

		 * @return			True on success, false if the file failed.

		 */

		virtual bool LoadGameConfigFile(const char *file, 

			IGameConfig **pConfig, 

			char *error, 

			size_t maxlength) =0;

		/**

		 * @brief Closes an IGameConfig pointer.  Since a file can be loaded 

		 * more than once, the file will not actually be removed from memory 

		 * until it is closed once for each call to LoadGameConfigfile().

		 *

		 * @param cfg		Pointer to the IGameConfig to close.

		 */

		virtual void CloseGameConfigFile(IGameConfig *cfg) =0;

		/**

		 * @brief Reads an GameConfig Handle.

		 *

		 * @param hndl		Handle to read.

		 * @param ident		Identity of the owner (can be NULL).

		 * @param err		Optional error buffer.

		 * @return			IGameConfig pointer on success, NULL otherwise.

		 */

		virtual IGameConfig *ReadHandle(Handle_t hndl,

			IdentityToken_t *ident,

			HandleError *err) =0;										

	};

}

#endif //_INCLUDE_SOURCEMOD_GAMECONFIG_SYSTEM_H_