/**

 * 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");

	}

	edict_t *pEdict = engine->PEntityOfEntIndex(params[1]);

	if (!pEdict)

	{

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

	}

	const char *classname = pEdict->GetClassName();

	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_filter == pEdict->m_NetworkSerialNumber)

		{

			return 0;

		}

	}

	hook = g_OutputManager.NewHook();

	hook->entity_filter = pEdict->m_NetworkSerialNumber;

	hook->entity_index = engine->IndexOfEdict(pEdict);

	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_filter == -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_filter = -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_filter == -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

	edict_t *pEdict = engine->PEntityOfEntIndex(params[1]);

	if (!pEdict)

	{

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

	}

	const char *classname = pEdict->GetClassName();

	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_index == engine->IndexOfEdict(pEdict))

		{

			// 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;

}

#if 0

static cell_t GetVariantType(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	return pInfo->crab.FieldType();

}

static cell_t GetVariantInt(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_INTEGER)

	{

		return pContext->ThrowNativeError("Variant is not an integer");

	}

	return pInfo->crab.Int();

}

static cell_t GetVariantBool(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_BOOLEAN)

	{

		return pContext->ThrowNativeError("Variant is not a boolean");

	}

	return pInfo->crab.Bool();

}

static cell_t GetVariantEntity(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_EHANDLE)

	{

		return pContext->ThrowNativeError("Variant is not an entity");

	}

	edict_t *pEdict = g_OutputManager.BaseHandleToEdict((CBaseHandle)pInfo->crab.Entity());

	return engine->IndexOfEdict(pEdict);

}

static cell_t GetVariantFloat(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_FLOAT)

	{

		return pContext->ThrowNativeError("Variant is not a float");

	}

	return sp_ftoc(pInfo->crab.Float());

}

static cell_t GetVariantVector(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_VECTOR)

	{

		return pContext->ThrowNativeError("Variant is not a vector");

	}

	cell_t *r;

	pContext->LocalToPhysAddr(params[2], &r);

	Vector temp;

	pInfo->crab.Vector3D(temp);

	r[0] = sp_ftoc(temp[0]);

	r[1] = sp_ftoc(temp[1]);

	r[2] = sp_ftoc(temp[2]);

	return 0;

}

static cell_t GetVariantColour(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	if (pInfo->crab.FieldType() != FIELD_COLOR32)

	{

		return pContext->ThrowNativeError("Variant is not a colour");

	}

	cell_t *r;

	pContext->LocalToPhysAddr(params[2], &r);

	color32 temp = pInfo->crab.Color32();

	r[0] = temp.r;

	r[1] = temp.g;

	r[2] = temp.b;

	r[4] = temp.a;

	return 0;

}

static cell_t GetVariantString(IPluginContext *pContext, const cell_t *params)

{

	Handle_t hndl = static_cast<Handle_t>(params[1]);

	HandleError err;

	varhandle_t *pInfo;

	HandleSecurity sec;

	sec.pOwner = NULL;

	sec.pIdentity = myself->GetIdentity();

	if ((err=handlesys->ReadHandle(hndl, g_OutputManager.VariantHandle, &sec, (void **)&pInfo))

		!= HandleError_None)

	{

		return pContext->ThrowNativeError("Invalid variant handle %x (error %d)", hndl, err);

	}

	char *dest;

	const char *src = pInfo->crab.String();

	size_t len;

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

	/* Perform bounds checking */

	len = strlen(src);

	if (len >= (unsigned)params[3])

	{

		len = params[3] - 1;

	} else {

		len = params[3];

	}

	/* Copy */

	memmove(dest, src, len);

	dest[len] = '\0';

	return 0;

}

#endif

sp_nativeinfo_t g_EntOutputNatives[] =

{

	{"HookEntityOutput",			HookEntityOutput},

	{"UnhookEntityOutput",			UnHookEntityOutput},

	{"HookSingleEntityOutput",		HookSingleEntityOutput},

	{"UnhookSingleEntityOutput",	UnHookSingleEntityOutput},

#if 0 //Removed because we don't need them

	{"GetVariantType",				GetVariantType},

	{"GetVariantInt",				GetVariantInt},

	{"GetVariantFloat",				GetVariantFloat},

	{"GetVariantBool",				GetVariantBool},

	{"GetVariantString",			GetVariantString},

	{"GetVariantEntity",			GetVariantEntity},

	{"GetVariantVector",			GetVariantVector},

	{"GetVariantColour",			GetVariantColour},

#endif

	{NULL,							NULL},

};

#if 0

//Include file stuff that wasn't needed:

enum FieldType

{

	FieldType_Float = 1,

	FieldType_String = 2,

	FieldType_Vector = 3,

	FieldType_Int = 5,

	FieldType_Bool = 6,

	FieldType_Colour = 9,

	FieldType_Entity = 13

}

/**

 * Gets the current type of a variant handle

 *

 * @param variant		A variant handle.

 * @return				Current type of the variant.

 */

native FieldType:GetVariantType(Handle:variant);

/**

 * Retreives a Float from a variant handle.

 *

 * @param variant		A variant handle.

 * @return				Float value.

 * @error				Variant handle is not type FieldType_Float

 */

native Float:GetVariantFloat(Handle:variant);

/**

 * Retreives an Integer from a variant handle.

 *

 * @param variant		A variant handle.

 * @return				Int value.

 * @error				Variant handle is not type FieldType_Int

 */

native GetVariantInt(Handle:variant);

/**

 * Retreives a bool from a variant handle.

 *

 * @param variant		A variant handle.

 * @return				bool value.

 * @error				Variant handle is not type FieldType_Bool

 */

native bool:GetVariantBool(Handle:variant);

/**

 * Retreives an entity from a variant handle.

 *

 * @param variant		A variant handle.

 * @return				Entity Index.

 * @error				Variant handle is not type FieldType_Entity

 */

native GetVariantEntity(Handle:variant);

/**

 * Retreives a Vector from a variant handle.

 *

 * @param variant		A variant handle.

 * @param vec			buffer to store the Vector.

 * @noreturn

 * @error				Variant handle is not type FieldType_Vector

 */

native GetVariantVector(Handle:variant, Float:vec[3]);

/**

 * Retreives a String from a variant handle.

 *

 * @note 	This native does not require the variant to be FieldType_String,

 *			It can convert any type into a string representation.

 *

 * @param variant		A variant handle.

 * @param buffer		buffer to store the string in

 * @param maxlen		Maximum length of buffer.

 * @noreturn

 */

native GetVariantString(Handle:variant, String:buffer[], maxlen);

/**

 * Retreives a Colour from a variant handle.

 *

 * @note Colour is in format r,g,b,a

 *

 * @param variant		A variant handle.

 * @param colour		buffer array to store the colour in.

 * @noreturn

 * @error				Variant handle is not type FieldType_Colour

 */

native GetVariantColour(Handle:variant, colour[4]);

#endif