/**

  * vim: set ts=4 :

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

  * SourceMod Nextmap Plugin

  * Adds sm_nextmap cvar for changing map and nextmap chat trigger.

  *

  * SourceMod (C)2004-2007 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: $Id$

  */

 #pragma semicolon 1

 #include <sourcemod>

 public Plugin:myinfo = 

 {

 	name = "Nextmap",

 	author = "AlliedModders LLC",

 	description = "Provides nextmap and sm_nextmap",

 	version = SOURCEMOD_VERSION,

 	url = "http://www.sourcemod.net/"

 };

 new bool:g_IntermissionCalled;

 new UserMsg:g_VGUIMenu;

 new Handle:g_Cvar_Chattime;

 new Handle:g_Cvar_Nextmap;

 new Handle:g_Cvar_Mapcycle;

 new g_MapPos = -1;

 new Handle:g_MapList = INVALID_HANDLE;

 new g_mapFileTime;

 public OnPluginStart()

 {

 	LoadTranslations("common.phrases");

 	LoadTranslations("nextmap.phrases");

 	g_VGUIMenu = GetUserMessageId("VGUIMenu");

 	if (g_VGUIMenu == INVALID_MESSAGE_ID)

 	{

 		LogError("FATAL: Cannot find VGUIMenu user message id. Nextmap not loaded.");

 		SetFailState("VGUIMenu Not Found");

 	}

 	g_Cvar_Chattime = FindConVar("mp_chattime");

 	g_Cvar_Mapcycle = FindConVar("mapcyclefile");

 	g_MapList = CreateArray(32);

 	if (!LoadMaps())

 	{

 		LogError("FATAL: Cannot load map cycle. Nextmap not loaded.");

 		SetFailState("Mapcycle Not Found");		

 	}	

 	HookUserMessage(g_VGUIMenu, UserMsg_VGUIMenu);

 	HookConVarChange(g_Cvar_Mapcycle, ConVarChange_Mapcyclefile);

 	g_Cvar_Nextmap = CreateConVar("sm_nextmap", "", "Sets the Next Map", FCVAR_NOTIFY);

 	RegConsoleCmd("say", Command_Say);

 	RegConsoleCmd("say_team", Command_Say);

 	RegAdminCmd("sm_setnextmap", Command_SetNextmap, ADMFLAG_CHANGEMAP, "sm_setnextmap <map>");

 	RegConsoleCmd("listmaps", Command_List);

 	// Set to the current map so OnMapStart() will know what to do

 	decl String:currentMap[64];

 	GetCurrentMap(currentMap, 64);

 	SetConVarString(g_Cvar_Nextmap, currentMap);

 }

 public OnMapStart()

 {

 	decl String:lastMap[64], String:currentMap[64];

 	GetConVarString(g_Cvar_Nextmap, lastMap, 64);

 	GetCurrentMap(currentMap, 64);

 	// Why am I doing this? If we switched to a new map, but it wasn't what we expected (Due to sm_map, sm_votemap, or

 	// some other plugin/command), we don't want to scramble the map cycle. Or for example, admin switches to a custom map

 	// not in mapcyclefile. So we keep it set to the last expected nextmap. - ferret

 	if (strcmp(lastMap, currentMap) == 0)

 	{

 		if (!LoadMaps())

 		{

 			LogError("FATAL: Cannot load map cycle. Nextmap not loaded.");

 			SetFailState("Mapcycle Not Found");	

 		}		

 		FindAndSetNextMap();

 	}

 }

 public OnMapEnd()

 {

 	g_IntermissionCalled = false;

 }

 public ConVarChange_Mapcyclefile(Handle:convar, const String:oldValue[], const String:newValue[])

 {

 	if (strcmp(oldValue, newValue, false) != 0)

 	{

 		if (!LoadMaps())

 		{

 			LogError("FATAL: Cannot load map cycle. Nextmap not loaded.");

 			SetFailState("Mapcycle Not Found");	

 		}

 		FindAndSetNextMap();

 	}

 }

 public Action:Command_Say(client, args)

 {

 	decl String:text[192];

 	if (GetCmdArgString(text, sizeof(text)) < 1)

 	{

 		return Plugin_Continue;

 	}

 	new startidx;

 	if (text[strlen(text)-1] == '"')

 	{

 		text[strlen(text)-1] = '\0';

 		startidx = 1;

 	}

 	decl String:message[8];

 	BreakString(text[startidx], message, sizeof(message));

 	if (strcmp(message, "nextmap", false) == 0)

 	{

 		decl String:map[32];

 		GetConVarString(g_Cvar_Nextmap, map, sizeof(map));

 		PrintToChatAll("%t", "Next Map", map);

 	}

 	return Plugin_Continue;	

 }

 public Action:Command_SetNextmap(client, args)

 {

 	if (args < 1)

 	{

 		ReplyToCommand(client, "[SM] Usage: sm_setnextmap <map>");

 		return Plugin_Handled;

 	}

 	decl String:map[64];

 	GetCmdArg(1, map, sizeof(map));

 	if (!IsMapValid(map))

 	{

 		ReplyToCommand(client, "[SM] %t", "Map was not found", map);

 		return Plugin_Handled;

 	}

 	ShowActivity(client, "%t", "Cvar changed", "sm_nextmap", map);

 	LogMessage("\"%L\" changed sm_nextmap to \"%s\"", client, map);

 	SetConVarString(g_Cvar_Nextmap, map);

 	return Plugin_Handled;

 }

 public Action:Command_List(client, args) 

 {

 	PrintToConsole(client, "Map Cycle:");

 	new mapCount = GetArraySize(g_MapList);

 	decl String:mapName[32];

 	for (new i = 0; i < mapCount; i++)

 	{

 		GetArrayString(g_MapList, i, mapName, sizeof(mapName));

 		PrintToConsole(client, "%s", mapName);

 	}

 	return Plugin_Handled;

 }

 public Action:UserMsg_VGUIMenu(UserMsg:msg_id, Handle:bf, const players[], playersNum, bool:reliable, bool:init)

 {

 	if (g_IntermissionCalled)

 	{

 		return Plugin_Handled;

 	}

 	decl String:type[15];

 	BfReadString(bf, type, sizeof(type));

 	if (BfReadByte(bf) == 1 && BfReadByte(bf) == 0 && (strcmp(type, "scores", false) == 0))

 	{

 		g_IntermissionCalled = true;

 		decl String:map[32];

 		new Float:fChatTime = GetConVarFloat(g_Cvar_Chattime);

 		GetConVarString(g_Cvar_Nextmap, map, sizeof(map));

 		if (!IsMapValid(map))

 		{

 			GetArrayString(g_MapList, g_MapPos, map, sizeof(map));

 		}

 		if (fChatTime < 2.0)

 			SetConVarFloat(g_Cvar_Chattime, 2.0);

 		new Handle:dp;

 		CreateDataTimer(fChatTime - 1.0, Timer_ChangeMap, dp);

 		WritePackString(dp, map);

 	}

 	return Plugin_Handled;

 }

 public Action:Timer_ChangeMap(Handle:timer, Handle:dp)

 {

 	new String:map[32];

 	ResetPack(dp);

 	ReadPackString(dp, map, sizeof(map));

 	InsertServerCommand("changelevel \"%s\"", map);

 	ServerExecute();

 	LogMessage("Nextmap changed map to \"%s\"", map);

 	return Plugin_Stop;

 }

 LoadMaps()

 {

 	decl String:mapCycle[64];

 	GetConVarString(g_Cvar_Mapcycle, mapCycle, 64);	

 	if (!FileExists(mapCycle))

 	{

 		LogError("[SM] Could not find file: %s", mapCycle);

 		return 0;

 	}

 	new fileTime =  GetFileTime(mapCycle, FileTime_LastChange);

 	if (g_mapFileTime == fileTime)

 	{

 		return GetArraySize(g_MapList);

 	}

 	g_mapFileTime = fileTime;

 	new Handle:file = OpenFile(mapCycle, "r");

 	if (file == INVALID_HANDLE)

 	{

 		LogError("[SM] Could not open file: %s", mapCycle);

 		return 0;

 	}

 	g_MapPos = -1;

 	if (g_MapList != INVALID_HANDLE)

 	{

 		ClearArray(g_MapList);

 	}

 	decl String:buffer[255];

 	while (!IsEndOfFile(file) && ReadFileLine(file, buffer, sizeof(buffer)))

 	{

 		TrimString(buffer);

 		if (buffer[0] == '\0' || buffer[0] == ';')

 		{

 			continue;

 		}

 		if (IsMapValid(buffer))

 		{

 			PushArrayString(g_MapList, buffer);

 		}

 	}

 	CloseHandle(file);

 	return GetArraySize(g_MapList);

 }

 FindAndSetNextMap()

 {

 	new mapCount = GetArraySize(g_MapList);

 	decl String:mapName[32];

 	if (g_MapPos == -1)

 	{

 		decl String:current[64];

 		GetCurrentMap(current, 64);

 		for (new i = 0; i < mapCount; i++)

 		{

 			GetArrayString(g_MapList, i, mapName, sizeof(mapName));

 			if (strcmp(current, mapName, false) == 0)

 			{

 				g_MapPos = i;

 				break;

 			}

 		}

 		if (g_MapPos == -1)

 			g_MapPos = 0;

 	}

 	g_MapPos++;

 	if (g_MapPos >= mapCount)

 		g_MapPos = 0;	

  	GetArrayString(g_MapList, g_MapPos, mapName, sizeof(mapName));

 	SetConVarString(g_Cvar_Nextmap, mapName);

 }