/**

 * 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 "sourcemod.h"

#include "sourcemm_api.h"

#include "sm_stringutil.h"

#include "HandleSys.h"

#include "HalfLife2.h"

#include <KeyValues.h>

#include "utlbuffer.h"

HandleType_t g_KeyValueType;

struct KeyValueStack 

{

	KeyValues *pBase;

	CStack<KeyValues *> pCurRoot;

};

class KeyValueNatives : 

	public SMGlobalClass,

	public IHandleTypeDispatch

{

public:

	void OnSourceModAllInitialized()

	{

		g_KeyValueType = g_HandleSys.CreateType("KeyValues", this, 0, NULL, NULL, g_pCoreIdent, NULL);

	}

	void OnSourceModShutdown()

	{

		g_HandleSys.RemoveType(g_KeyValueType, g_pCoreIdent);

		g_KeyValueType = 0;

	}

	void OnHandleDestroy(HandleType_t type, void *object)

	{

		KeyValueStack *pStk = reinterpret_cast<KeyValueStack *>(object);

		pStk->pBase->deleteThis();

		delete pStk;

	}

	int CalcKVSizeR(KeyValues *pv)

	{

		CUtlBuffer buf;

		int size;

		pv->RecursiveSaveToFile(buf, 0);

		size = buf.TellMaxPut();

		buf.Purge();

		return size;

	}

	bool GetHandleApproxSize(HandleType_t type, void *object, unsigned int *pSize)

	{

		KeyValueStack *pStk = (KeyValueStack *)object;

		unsigned int size = sizeof(KeyValueStack) + (pStk->pCurRoot.size() * sizeof(KeyValues *));

		/* Check how much memory the actual thing takes up */		

		size += CalcKVSizeR(pStk->pBase);

		*pSize = size;

		return true;

	}

};

KeyValues *SourceModBase::ReadKeyValuesHandle(Handle_t hndl, HandleError *err, bool root)

{

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		if (err)

		{

			*err = herr;

		}

		return NULL;

	}

	if (err)

	{

		*err = HandleError_None;

	}

	return (root) ? pStk->pBase : pStk->pCurRoot.front();

}

static cell_t smn_KvSetString(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key, *value;

	pCtx->LocalToStringNULL(params[2], &key);

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

	pStk->pCurRoot.front()->SetString(key, value);

	return 1;

}

static cell_t smn_KvSetNum(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	pCtx->LocalToStringNULL(params[2], &key);

	pStk->pCurRoot.front()->SetInt(key, params[3]);

	return 1;

}

static cell_t smn_KvSetUInt64(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	cell_t *addr;

	uint64 value;

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToPhysAddr(params[3], &addr);

	value = static_cast<uint64>(*addr);

	pStk->pCurRoot.front()->SetUint64(key, value);

	return 1;

}

static cell_t smn_KvSetFloat(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	pCtx->LocalToStringNULL(params[2], &key);

	pStk->pCurRoot.front()->SetFloat(key, sp_ctof(params[3]));

	return 1;

}

static cell_t smn_KvSetColor(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	pCtx->LocalToStringNULL(params[2], &key);

	Color color(params[3], params[4], params[5], params[6]);

	pStk->pCurRoot.front()->SetColor(key, color);

	return 1;

}

static cell_t smn_KvSetVector(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	char buffer[64];

	cell_t *vector;

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToPhysAddr(params[3], &vector);

	UTIL_Format(buffer, sizeof(buffer), "%f %f %f", sp_ctof(vector[0]), sp_ctof(vector[1]), sp_ctof(vector[2]));

	pStk->pCurRoot.front()->SetString(key, buffer);

	return 1;

}

static cell_t smn_KvGetString(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	const char *value;

	char *key, *defvalue;

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToString(params[5], &defvalue);

	value = pStk->pCurRoot.front()->GetString(key, defvalue);

	pCtx->StringToLocalUTF8(params[3], params[4], value, NULL);

	return 1;

}

static cell_t smn_KvGetNum(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	int value;

	char *key;

	pCtx->LocalToStringNULL(params[2], &key);

	value = pStk->pCurRoot.front()->GetInt(key, params[3]);

	return value;

}

static cell_t smn_KvGetFloat(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	float value;

	char *key;

	pCtx->LocalToStringNULL(params[2], &key);

	value = pStk->pCurRoot.front()->GetFloat(key, sp_ctof(params[3]));

	return sp_ftoc(value);

}

static cell_t smn_KvGetColor(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	Color color;

	char *key;

	cell_t *r, *g, *b, *a;

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToPhysAddr(params[3], &r);

	pCtx->LocalToPhysAddr(params[4], &g);

	pCtx->LocalToPhysAddr(params[5], &b);

	pCtx->LocalToPhysAddr(params[6], &a);

	color = pStk->pCurRoot.front()->GetColor(key);

	*r = color.r();

	*g = color.g();

	*b = color.b();

	*a = color.a();

	return 1;

}

static cell_t smn_KvGetUInt64(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	cell_t *addr, *defvalue;

	uint64 value;

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToPhysAddr(params[3], &addr);

	pCtx->LocalToPhysAddr(params[4], &defvalue);

	value = pStk->pCurRoot.front()->GetUint64(key, static_cast<uint64>(*defvalue));

	*reinterpret_cast<uint64 *>(addr) = value;

	return 1;

}

static cell_t smn_KvGetVector(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	char *key;

	const char *value;

	cell_t *defvector, *outvector;

	char buffer[64];

	pCtx->LocalToStringNULL(params[2], &key);

	pCtx->LocalToPhysAddr(params[3], &outvector);

	pCtx->LocalToPhysAddr(params[4], &defvector);

	UTIL_Format(buffer, sizeof(buffer), "%f %f %f", sp_ctof(defvector[0]), sp_ctof(defvector[1]), sp_ctof(defvector[2]));

	value = pStk->pCurRoot.front()->GetString(key, buffer);

	float out;

	int components = 0;

	while (*value && components < 3)

	{

		while ((*value) && (*value == ' '))

		{

			value++;

		}

		out = 0.0f;

		bool isnegative;

		if (*value == '-')

		{

			isnegative = true;

			value++;

		}

		else

		{

			isnegative = false;

		}

		for (; *value && isdigit(*value); ++value)

		{

			out *= 10.0f;

			out += *value - '0';

		}

		if (*value == '.')

		{

			value++;

			float factor = 0.1f;

			for (; *value && isdigit(*value); ++value)

			{

				out += (*value - '0') * factor;

				factor *= 0.1f;

			}

		}

		out = (isnegative) ? -out : out;

		outvector[components++] = sp_ftoc(out);

	}

	return 1;

}

static cell_t smn_CreateKeyValues(IPluginContext *pCtx, const cell_t *params)

{

	KeyValueStack *pStk;

	char *name, *firstkey, *firstvalue;

	bool is_empty;

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

	pCtx->LocalToString(params[2], &firstkey);

	pCtx->LocalToString(params[3], &firstvalue);

	is_empty = (firstkey[0] == '\0');

	pStk = new KeyValueStack;

	pStk->pBase = new KeyValues(name, is_empty ? NULL : firstkey, (is_empty||(firstvalue[0]=='\0')) ? NULL : firstvalue);

	pStk->pCurRoot.push(pStk->pBase);

	return g_HandleSys.CreateHandle(g_KeyValueType, pStk, pCtx->GetIdentity(), g_pCoreIdent, NULL);

}

static cell_t smn_KvJumpToKey(IPluginContext *pCtx, const cell_t *params)

{

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

	HandleError herr;

	HandleSecurity sec;

	char *name;	

	KeyValueStack *pStk;

	sec.pOwner = NULL;

	sec.pIdentity = g_pCoreIdent;

	if ((herr=g_HandleSys.ReadHandle(hndl, g_KeyValueType, &sec, (void **)&pStk))

		!= HandleError_None)

	{

		return pCtx->ThrowNativeError("Invalid key value handle %x (error %d)", hndl, herr);

	}

	pCtx->LocalToString(params[2], &name);

	KeyValues *pSubKey = pStk->pCurRoot.front();

	pSubKey = pSubKey->FindKey(name, (params[3]) ? true : false);

	if (!pSubKey)

	{

		return 0;

	}

	pStk->pCurRoot.push(pSubKey);

	return 1;

}

static cell_t smn_KvJumpToKeySymbol(IPluginContext *pCtx, const cell_t *params)

{

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