/**

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

 * 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_EXTENSION_SYSTEM_H_

#define _INCLUDE_SOURCEMOD_EXTENSION_SYSTEM_H_

#include <IExtensionSys.h>

#include <ILibrarySys.h>

#include <sh_list.h>

#include <sh_string.h>

#include "sm_globals.h"

#include "ShareSys.h"

#include <ISmmAPI.h>

#include <IPluginSys.h>

#include <IRootConsoleMenu.h>

using namespace SourceMod;

using namespace SourceHook;

class CExtension : public IExtension

{

	friend class CExtensionManager;

public:

	CExtension(const char *filename, char *error, size_t maxlen);

	~CExtension();

public: //IExtension

	IExtensionInterface *GetAPI();

	const char *GetFilename();

	IdentityToken_t *GetIdentity();

	bool IsLoaded();

	ITERATOR *FindFirstDependency(IExtension **pOwner, SMInterface **pInterface);

	bool FindNextDependency(ITERATOR *iter, IExtension **pOwner, SMInterface **pInterface);

	void FreeDependencyIterator(ITERATOR *iter);

	bool IsRunning(char *error, size_t maxlength);

public:

	void SetError(const char *error);

	void AddDependency(IfaceInfo *pInfo);

	void AddInterface(SMInterface *pInterface);

	void AddPlugin(IPlugin *pPlugin);

	void RemovePlugin(IPlugin *pPlugin);

	void MarkAllLoaded();

private:

	IdentityToken_t *m_pIdentToken;

	IExtensionInterface *m_pAPI;

	String m_File;

	ILibrary *m_pLib;

	String m_Error;

	List<IfaceInfo> m_Deps;

	List<SMInterface *> m_Interfaces;

	List<IPlugin *> m_Plugins;

	List<const sp_nativeinfo_t *> m_Natives;

	PluginId m_PlId;

	unsigned int unload_code;

	bool m_FullyLoaded;

};

class CExtensionManager : 

	public IExtensionManager,

	public SMGlobalClass,

	public IPluginsListener,

	public IRootConsoleCommand

{

public: //SMGlobalClass

	void OnSourceModAllInitialized();

	void OnSourceModShutdown();

public: //IExtensionManager

	IExtension *LoadExtension(const char *path, 

		ExtensionLifetime lifetime, 

		char *error,

		size_t err_max);

	bool UnloadExtension(IExtension *pExt);

	IExtension *FindExtensionByFile(const char *file);

	IExtension *FindExtensionByName(const char *ext);

public: //IPluginsListener

	void OnPluginDestroyed(IPlugin *plugin);

public: //IRootConsoleCommand

	void OnRootConsoleCommand(const char *cmd, unsigned int argcount);

public:

	IExtension *LoadAutoExtension(const char *path);

	void BindDependency(IExtension *pOwner, IfaceInfo *pInfo);

	void AddInterface(IExtension *pOwner, SMInterface *pInterface);

	void BindChildPlugin(IExtension *pParent, IPlugin *pPlugin);

	void AddNatives(IExtension *pOwner, const sp_nativeinfo_t *natives);

	void BindAllNativesToPlugin(IPlugin *pPlugin);

	void MarkAllLoaded();

	void AddDependency(IExtension *pSource, const char *file, bool required, bool autoload);

	void TryAutoload();

private:

	CExtension *FindByOrder(unsigned int num);

private:

	List<CExtension *> m_Libs;

};

extern CExtensionManager g_Extensions;

#endif //_INCLUDE_SOURCEMOD_EXTENSION_SYSTEM_H_