/**

 * vim: set ts=4 sw=4 :

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

 * SourceMod

 * Copyright (C) 2004-2010 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 <stdio.h>

#include <assert.h>

#include "sourcemod.h"

#include "sourcemm_api.h"

#include "sm_globals.h"

#include "NativeOwner.h"

#include "sm_autonatives.h"

#include "logic/intercom.h"

#include "LibrarySys.h"

#include "HandleSys.h"

#include "sm_stringutil.h"

#include "Logger.h"

#include "ShareSys.h"

#include "sm_srvcmds.h"

#include "ForwardSys.h"

#include "TimerSys.h"

#include "logic_bridge.h"

#include "DebugReporter.h"

#include "PlayerManager.h"

#include "AdminCache.h"

#include "HalfLife2.h"

#include "CoreConfig.h"

#if defined _WIN32

	#define MATCHMAKINGDS_SUFFIX	""

	#define MATCHMAKINGDS_EXT	"dll"

#elif defined __APPLE__

	#define MATCHMAKINGDS_SUFFIX	""

	#define MATCHMAKINGDS_EXT	"dylib"

#elif defined __linux__

#if SOURCE_ENGINE < SE_LEFT4DEAD2

	#define MATCHMAKINGDS_SUFFIX	"_i486"

#else

	#define MATCHMAKINGDS_SUFFIX	""

#endif

	#define MATCHMAKINGDS_EXT	"so"

#endif

static ILibrary *g_pLogic = NULL;

static LogicInitFunction logic_init_fn;

IThreader *g_pThreader;

ITextParsers *textparsers;

sm_logic_t logicore;

ITranslator *translator;

class VEngineServer_Logic : public IVEngineServer_Logic

{

public:

	virtual bool IsMapValid(const char *map)

	{

		return engine->IsMapValid(map);

	}

	virtual void ServerCommand(const char *cmd)

	{

		engine->ServerCommand(cmd);

	}

};

static VEngineServer_Logic logic_engine;

static void add_natives(sp_nativeinfo_t *natives)

{

	g_pCoreNatives->AddNatives(natives);

}

static ConVar *find_convar(const char *name)

{

	return icvar->FindVar(name);

}

static void log_error(const char *fmt, ...)

{

	va_list ap;

	va_start(ap, fmt);

	g_Logger.LogErrorEx(fmt, ap);

	va_end(ap);

}

static void generate_error(IPluginContext *ctx, cell_t func_idx, int err, const char *fmt, ...)

{

	va_list ap;

	va_start(ap, fmt);

	g_DbgReporter.GenerateErrorVA(ctx, func_idx, err, fmt, ap);

	va_end(ap);

}

static const char *get_cvar_string(ConVar* cvar)

{

	return cvar->GetString();

}

static bool get_game_name(char *buffer, size_t maxlength)

{

	KeyValues *pGameInfo = new KeyValues("GameInfo");

	if (g_HL2.KVLoadFromFile(pGameInfo, basefilesystem, "gameinfo.txt"))

	{

		const char *str;

		if ((str = pGameInfo->GetString("game", NULL)) != NULL)

		{

			strncopy(buffer, str, maxlength);

			return true;

		}

	}

	pGameInfo->deleteThis();

	return false;

}

static const char *get_game_description()

{

	return SERVER_CALL(GetGameDescription)();

}

static const char *get_source_engine_name()

{

#if !defined SOURCE_ENGINE

# error "Unknown engine type"

#endif

#if SOURCE_ENGINE == SE_EPISODEONE

	return "original";

#elif SOURCE_ENGINE == SE_DARKMESSIAH

	return "darkmessiah";

#elif SOURCE_ENGINE == SE_ORANGEBOX

	return "orangebox";

#elif SOURCE_ENGINE == SE_BLOODYGOODTIME

	return "bloodygoodtime";

#elif SOURCE_ENGINE == SE_ORANGEBOXVALVE

	return "orangebox_valve";

#elif SOURCE_ENGINE == SE_LEFT4DEAD

	return "left4dead";

#elif SOURCE_ENGINE == SE_LEFT4DEAD2

	return "left4dead2";

#elif SOURCE_ENGINE == SE_ALIENSWARM

	return "alienswarm";

#endif

}

static bool symbols_are_hidden()

{

#if (SOURCE_ENGINE == SE_ORANGEBOXVALVE) || (SOURCE_ENGINE == SE_LEFT4DEAD) || (SOURCE_ENGINE == SE_LEFT4DEAD2)

	return true;

#else

	return false;

#endif

}

static const char* get_core_config_value(const char* key)

{

	return g_CoreConfig.GetCoreConfigValue(key);

}	

static ServerGlobals serverGlobals;

static sm_core_t core_bridge =

{

	/* Objects */

	&g_HandleSys,

	NULL,

	&g_SourceMod,

	&g_LibSys,

	reinterpret_cast<IVEngineServer*>(&logic_engine),

	&g_ShareSys,

	&g_RootMenu,

	&g_PluginSys,

	&g_Forwards,

	&g_Timers,

	&g_Players,

	&g_Admins,

	&g_HL2,

	/* Functions */

	add_natives,

	find_convar,

	strncopy,

	UTIL_TrimWhitespace,

	log_error,

	get_cvar_string,

	UTIL_Format,

	generate_error,

	gnprintf,

	atcprintf,

	get_game_name,

	get_game_description,

	get_source_engine_name,

	symbols_are_hidden,

	get_core_config_value,

	&serverGlobals

};

void InitLogicBridge()

{

	serverGlobals.universalTime = g_pUniversalTime;

	serverGlobals.frametime = &gpGlobals->frametime;

	serverGlobals.interval_per_tick = &gpGlobals->interval_per_tick;

	core_bridge.core_ident = g_pCoreIdent;

	core_bridge.engineFactory = (void *)g_SMAPI->GetEngineFactory(false);

	core_bridge.serverFactory = (void *)g_SMAPI->GetServerFactory(false);

	ILibrary *mmlib;

	char path[PLATFORM_MAX_PATH];

	g_LibSys.PathFormat(path, sizeof(path), "%s/bin/matchmaking_ds%s.%s", g_SMAPI->GetBaseDir(), MATCHMAKINGDS_SUFFIX, MATCHMAKINGDS_EXT);

	if ((mmlib = g_LibSys.OpenLibrary(path, NULL, 0)))

	{

		core_bridge.matchmakingDSFactory = mmlib->GetSymbolAddress("CreateInterface");

		mmlib->CloseLibrary();

	}

	logic_init_fn(&core_bridge, &logicore);

	/* Add SMGlobalClass instances */

	SMGlobalClass* glob = SMGlobalClass::head;

	while (glob->m_pGlobalClassNext != NULL)

	{

		glob = glob->m_pGlobalClassNext;

	}

	assert(glob->m_pGlobalClassNext == NULL);

	glob->m_pGlobalClassNext = logicore.head;

	g_pThreader = logicore.threader;

	g_pSourcePawn2->SetProfiler(logicore.profiler);

	translator = logicore.translator;

}

bool StartLogicBridge(char *error, size_t maxlength)

{

	char file[PLATFORM_MAX_PATH];

	/* Now it's time to load the logic binary */

	g_SMAPI->PathFormat(file,

		sizeof(file),

		"%s/bin/sourcemod.logic." PLATFORM_LIB_EXT,

		g_SourceMod.GetSourceModPath());

	char myerror[255];

	g_pLogic = g_LibSys.OpenLibrary(file, myerror, sizeof(myerror));

	if (!g_pLogic)

	{

		if (error && maxlength)

		{

			UTIL_Format(error, maxlength, "failed to load %s: %s", file, myerror);

		}

		return false;

	}

	LogicLoadFunction llf = (LogicLoadFunction)g_pLogic->GetSymbolAddress("logic_load");

	if (llf == NULL)

	{

		g_pLogic->CloseLibrary();

		if (error && maxlength)

		{

			UTIL_Format(error, maxlength, "could not find logic_load function");

		}

		return false;

	}

	GetITextParsers getitxt = (GetITextParsers)g_pLogic->GetSymbolAddress("get_textparsers");

	textparsers = getitxt();

	logic_init_fn = llf(SM_LOGIC_MAGIC);

	return true;

}

void ShutdownLogicBridge()

{

	g_pLogic->CloseLibrary();

}