/**

  * vim: set ts=4 :

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

  * SourceMod SDKTools Extension

  * 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: $Id$

  */

 #include "extension.h"

 #include "output.h"

 // HookSingleEntityOutput(ent, const String:output[], function, bool:once);

 cell_t HookSingleEntityOutput(IPluginContext *pContext, const cell_t *params)

 {

 	if (!g_OutputManager.IsEnabled())

 	{

 		return pContext->ThrowNativeError("Entity Outputs are disabled - See error logs for details");

 	}

 	CBaseEntity *pEntity = gamehelpers->ReferenceToEntity(params[1]);

 	if (!pEntity)

 	{

 		return pContext->ThrowNativeError("Invalid Entity index %i (%i)", gamehelpers->ReferenceToIndex(params[1]), params[1]);

 	}

 	const char *classname = g_OutputManager.GetEntityClassname(pEntity);

 	char *outputname;

 	pContext->LocalToString(params[2], &outputname);

 	OutputNameStruct *pOutputName = g_OutputManager.FindOutputPointer((const char *)classname, outputname, true);

 	//Check for an existing identical hook

 	SourceHook::List<omg_hooks *>::iterator _iter;

 	omg_hooks *hook;

 	IPluginFunction *pFunction;

 	pFunction = pContext->GetFunctionById(params[3]);

 	for (_iter=pOutputName->hooks.begin(); _iter!=pOutputName->hooks.end(); _iter++)

 	{

 		hook = (omg_hooks *)*_iter;

 		if (hook->pf == pFunction && hook->entity_ref == gamehelpers->EntityToReference(pEntity))

 		{

 			return 0;

 		}

 	}

 	hook = g_OutputManager.NewHook();

 	hook->entity_ref = gamehelpers->EntityToReference(pEntity);

 	hook->only_once= !!params[4];

 	hook->pf = pFunction;

 	hook->m_parent = pOutputName;

 	hook->in_use = false;

 	hook->delete_me = false;

 	pOutputName->hooks.push_back(hook);

 	g_OutputManager.OnHookAdded();

 	IPlugin *pPlugin = plsys->FindPluginByContext(pContext->GetContext());

 	SourceHook::List<omg_hooks *> *pList = NULL;

 	if (!pPlugin->GetProperty("OutputHookList", (void **)&pList, false) || !pList)

 	{

 		pList = new SourceHook::List<omg_hooks *>;

 		pPlugin->SetProperty("OutputHookList", pList);

 	}

 	pList->push_back(hook);

 	return 1;

 }

 // HookEntityOutput(const String:classname[], const String:output[], function);

 cell_t HookEntityOutput(IPluginContext *pContext, const cell_t *params)

 {

 	if (!g_OutputManager.IsEnabled())

 	{

 		return pContext->ThrowNativeError("Entity Outputs are disabled - See error logs for details");

 	}

 	//Find or create the base structures for this classname and the output

 	char *classname;

 	pContext->LocalToString(params[1], &classname);

 	char *outputname;

 	pContext->LocalToString(params[2], &outputname);

 	OutputNameStruct *pOutputName = g_OutputManager.FindOutputPointer((const char *)classname, outputname, true);

 	//Check for an existing identical hook

 	SourceHook::List<omg_hooks *>::iterator _iter;

 	omg_hooks *hook;

 	IPluginFunction *pFunction;

 	pFunction = pContext->GetFunctionById(params[3]);

 	for (_iter=pOutputName->hooks.begin(); _iter!=pOutputName->hooks.end(); _iter++)

 	{

 		hook = (omg_hooks *)*_iter;

 		if (hook->pf == pFunction && hook->entity_ref == -1)

 		{

 			//already hooked to this function...

 			//throw an error or just let them get away with stupidity?

 			// seems like poor coding if they dont know if something is hooked or not

 			return 0;

 		}

 	}

 	hook = g_OutputManager.NewHook();

 	hook->entity_ref = -1;

 	hook->pf = pFunction;

 	hook->m_parent = pOutputName;

 	hook->in_use = false;

 	hook->delete_me = false;

 	pOutputName->hooks.push_back(hook);

 	g_OutputManager.OnHookAdded();

 	IPlugin *pPlugin = plsys->FindPluginByContext(pContext->GetContext());

 	SourceHook::List<omg_hooks *> *pList = NULL;

 	if (!pPlugin->GetProperty("OutputHookList", (void **)&pList, false) || !pList)

 	{

 		pList = new SourceHook::List<omg_hooks *>;

 		pPlugin->SetProperty("OutputHookList", pList);

 	}

 	pList->push_back(hook);

 	return 1;

 }

 // UnHookEntityOutput(const String:classname[], const String:output[], EntityOutput:callback);

 cell_t UnHookEntityOutput(IPluginContext *pContext, const cell_t *params)

 {

 	if (!g_OutputManager.IsEnabled())

 	{

 		return pContext->ThrowNativeError("Entity Outputs are disabled - See error logs for details");

 	}

 	char *classname;

 	pContext->LocalToString(params[1], &classname);

 	char *outputname;

 	pContext->LocalToString(params[2], &outputname);

 	OutputNameStruct *pOutputName = g_OutputManager.FindOutputPointer((const char *)classname, outputname, false);

 	if (!pOutputName)

 	{

 		return 0;

 	}

 	//Check for an existing identical hook

 	SourceHook::List<omg_hooks *>::iterator _iter;

 	omg_hooks *hook;

 	IPluginFunction *pFunction;

 	pFunction = pContext->GetFunctionById(params[3]);

 	for (_iter=pOutputName->hooks.begin(); _iter!=pOutputName->hooks.end(); _iter++)

 	{

 		hook = (omg_hooks *)*_iter;

 		if (hook->pf == pFunction && hook->entity_ref == -1)

 		{

 			// remove this hook.

 			if (hook->in_use)

 			{

 				hook->delete_me = true;

 				return 1;

 			}

 			pOutputName->hooks.erase(_iter);

 			g_OutputManager.CleanUpHook(hook);

 			return 1;

 		}

 	}

 	return 0;

 }

 // UnHookSingleEntityOutput(entity, const String:output[], EntityOutput:callback);

 cell_t UnHookSingleEntityOutput(IPluginContext *pContext, const cell_t *params)

 {

 	if (!g_OutputManager.IsEnabled())

 	{

 		return pContext->ThrowNativeError("Entity Outputs are disabled - See error logs for details");

 	}

 	// Find the classname of the entity and lookup the classname and output structures

 	CBaseEntity *pEntity = gamehelpers->ReferenceToEntity(params[1]);

 	if (!pEntity)

 	{

 		return pContext->ThrowNativeError("Invalid Entity index %i (%i)", gamehelpers->ReferenceToIndex(params[1]), params[1]);

 	}

 	const char *classname = g_OutputManager.GetEntityClassname(pEntity);

 	char *outputname;

 	pContext->LocalToString(params[2], &outputname);

 	OutputNameStruct *pOutputName = g_OutputManager.FindOutputPointer((const char *)classname, outputname, false);

 	if (!pOutputName)

 	{

 		return 0;

 	}

 	//Check for an existing identical hook

 	SourceHook::List<omg_hooks *>::iterator _iter;

 	omg_hooks *hook;

 	IPluginFunction *pFunction;

 	pFunction = pContext->GetFunctionById(params[3]);

 	for (_iter=pOutputName->hooks.begin(); _iter!=pOutputName->hooks.end(); _iter++)

 	{

 		hook = (omg_hooks *)*_iter;

 		/* We're not serial checking and just removing by index here - This was always allowed so is left for bcompat */

 		if (hook->pf == pFunction && gamehelpers->ReferenceToIndex(hook->entity_ref) == gamehelpers->ReferenceToIndex(params[1]))

 		{

 			// remove this hook.

 			if (hook->in_use)

 			{

 				hook->delete_me = true;

 				return 1;

 			}

 			pOutputName->hooks.erase(_iter);

 			g_OutputManager.CleanUpHook(hook);

 			return 1;

 		}

 	}

 	return 0;

 }

 sp_nativeinfo_t g_EntOutputNatives[] =

 {

 	{"HookEntityOutput",			HookEntityOutput},

 	{"UnhookEntityOutput",			UnHookEntityOutput},

 	{"HookSingleEntityOutput",		HookSingleEntityOutput},

 	{"UnhookSingleEntityOutput",	UnHookSingleEntityOutput},

 	{NULL,							NULL},

 };