/**

 * vim: set ts=4 :

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

 * 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: $Id$

 */

#include "sm_globals.h"

#include "sourcemm_api.h"

#include "HandleSys.h"

#include "EventManager.h"

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

{

	char *name;

	IPluginFunction *pFunction;

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

	pFunction = pContext->GetFunctionById(params[2]);

	if (!pFunction)

	{

		return pContext->ThrowNativeError("Invalid function id (%X)", params[2]);

	}

	if (g_EventManager.HookEvent(name, pFunction, static_cast<EventHookMode>(params[3])) == EventHookErr_InvalidEvent)

	{

		return pContext->ThrowNativeError("Game event \"%s\" does not exist", name);

	}

	return 1;

}

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

{

	char *name;

	IPluginFunction *pFunction;

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

	pFunction = pContext->GetFunctionById(params[2]);

	if (!pFunction)

	{

		return pContext->ThrowNativeError("Invalid function id (%X)", params[2]);

	}

	if (g_EventManager.HookEvent(name, pFunction, static_cast<EventHookMode>(params[3])) == EventHookErr_InvalidEvent)

	{

		return 0;

	}

	return 1;

}

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

{

	char *name;

	IPluginFunction *pFunction;

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

	pFunction = pContext->GetFunctionById(params[2]);

	if (!pFunction)

	{

		return pContext->ThrowNativeError("Invalid function id (%X)", params[2]);

	}

	EventHookError err = g_EventManager.UnhookEvent(name, pFunction, static_cast<EventHookMode>(params[3]));

	/* Possible errors that UnhookGameEvent can return */

	if (err == EventHookErr_NotActive)

	{

		return pContext->ThrowNativeError("Game event \"%s\" has no active hook", name);

	} else if (err == EventHookErr_InvalidCallback) {

		return pContext->ThrowNativeError("Invalid hook callback specified for game event \"%s\"", name);

	}

	return 1;

}

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

{

	char *name;

	EventInfo *pInfo;

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

	pInfo = g_EventManager.CreateEvent(pContext, name, params[2] ? true : false);

	if (pInfo)

	{

		return g_HandleSys.CreateHandle(g_EventManager.GetHandleType(), pInfo, pContext->GetIdentity(), g_pCoreIdent, NULL);

	}

	return BAD_HANDLE;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	/* If identities do not match, don't fire event */

	if (pContext->GetIdentity() != pInfo->pOwner)

	{

		return pContext->ThrowNativeError("Game event \"%s\" could not be fired because it was not created by this plugin", pInfo->pEvent->GetName());

	}

	g_EventManager.FireEvent(pInfo, params[2] ? true : false);

	/* Free handle on game event */

	HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);

	g_HandleSys.FreeHandle(hndl, &sec);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	/* If identities do not match, don't cancel event */

	if (pContext->GetIdentity() != pInfo->pOwner)

	{

		return pContext->ThrowNativeError("Game event \"%s\" could not be canceled because it was not created by this plugin", pInfo->pEvent->GetName());

	}

	g_EventManager.CancelCreatedEvent(pInfo);

	/* Free handle on game event */

	HandleSecurity sec(pContext->GetIdentity(), g_pCoreIdent);

	g_HandleSys.FreeHandle(hndl, &sec);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	pContext->StringToLocalUTF8(params[2], params[3], pInfo->pEvent->GetName(), NULL);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	return pInfo->pEvent->GetBool(key);

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	return pInfo->pEvent->GetInt(key);

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	float value = pInfo->pEvent->GetFloat(key);

	return sp_ftoc(value);

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	pContext->StringToLocalUTF8(params[3], params[4], pInfo->pEvent->GetString(key), NULL);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	pInfo->pEvent->SetBool(key, params[3] ? true : false);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	pInfo->pEvent->SetInt(key, params[3]);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key;

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

	float value = sp_ctof(params[3]);

	pInfo->pEvent->SetFloat(key, value);

	return 1;

}

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

{

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

	HandleError err;

	EventInfo *pInfo;

	if ((err=g_HandleSys.ReadHandle(hndl, g_EventManager.GetHandleType(), NULL, (void **)&pInfo))

		!= HandleError_None)

	{

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

	}

	char *key, *value;

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

	pContext->LocalToString(params[3], &value);

	pInfo->pEvent->SetString(key, value);

	return 1;

}

REGISTER_NATIVES(gameEventNatives)

{

	{"HookEvent",			sm_HookEvent},

	{"HookEventEx",			sm_HookEventEx},

	{"UnhookEvent",			sm_UnhookEvent},

	{"CreateEvent",			sm_CreateEvent},

	{"FireEvent",			sm_FireEvent},

	{"CancelCreatedEvent",	sm_CancelCreatedEvent},

	{"GetEventName",		sm_GetEventName},

	{"GetEventBool",		sm_GetEventBool},

	{"GetEventInt",			sm_GetEventInt},

	{"GetEventFloat",		sm_GetEventFloat},

	{"GetEventString",		sm_GetEventString},

	{"SetEventBool",		sm_SetEventBool},

	{"SetEventInt",			sm_SetEventInt},

	{"SetEventFloat",		sm_SetEventFloat},

	{"SetEventString",		sm_SetEventString},

	{NULL,					NULL}

};