/**

  * vim: set ts=4 :

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

  * SourceMod Mapchooser Plugin

  * Creates a map vote at appropriate times, setting sm_nextmap to the winning

  * vote

  *

  * 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 = "MapChooser",

 	author = "AlliedModders LLC",

 	description = "Automated Map Voting",

 	version = SOURCEMOD_VERSION,

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

 };

 new Handle:g_Cvar_Winlimit = INVALID_HANDLE;

 new Handle:g_Cvar_Maxrounds = INVALID_HANDLE;

 new Handle:g_Cvar_Fraglimit = INVALID_HANDLE;

 new Handle:g_Cvar_Nextmap = INVALID_HANDLE;

 new Handle:g_Cvar_StartTime = INVALID_HANDLE;

 new Handle:g_Cvar_StartRounds = INVALID_HANDLE;

 new Handle:g_Cvar_StartFrags = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendTimeMax = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendTimeStep = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendRoundMax = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendRoundStep = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendFragMax = INVALID_HANDLE;

 new Handle:g_Cvar_ExtendFragStep = INVALID_HANDLE;

 new Handle:g_Cvar_Mapfile = INVALID_HANDLE;

 new Handle:g_Cvar_ExcludeMaps = INVALID_HANDLE;

 new Handle:g_Cvar_IncludeMaps = INVALID_HANDLE;

 new Handle:g_Cvar_NoVoteMode = INVALID_HANDLE;

 new Handle:g_Cvar_Extend = INVALID_HANDLE;

 new Handle:g_VoteTimer = INVALID_HANDLE;

 new Handle:g_RetryTimer = INVALID_HANDLE;

 new Handle:g_MapList = INVALID_HANDLE;

 new Handle:g_OldMapList = INVALID_HANDLE;

 new Handle:g_NextMapList = INVALID_HANDLE;

 new Handle:g_VoteMenu = INVALID_HANDLE;

 new Handle:g_TeamScores = INVALID_HANDLE;

 new bool:g_HasVoteStarted;

 new g_mapFileTime;

 #define VOTE_EXTEND "##extend##"

 public OnPluginStart()

 {

 	LoadTranslations("mapchooser.phrases");

 	g_MapList = CreateArray(33);

 	g_OldMapList = CreateArray(33);

 	g_NextMapList = CreateArray(33);

 	g_TeamScores = CreateArray(2);

 	g_Cvar_StartTime = CreateConVar("sm_mapvote_start", "3.0", "Specifies when to start the vote based on time remaining.", _, true, 1.0);

 	g_Cvar_StartRounds = CreateConVar("sm_mapvote_startround", "2.0", "Specifies when to start the vote based on rounds remaining.", _, true, 1.0);

 	g_Cvar_StartFrags = CreateConVar("sm_mapvote_startfrags", "5.0", "Specifies when to start the vote base on frags remaining.", _, true, 1.0);

 	g_Cvar_ExtendTimeMax = CreateConVar("sm_extendmap_maxtime", "90", "Specifies the maximum amount of time a map can be extended", _, true, 0.0);

 	g_Cvar_ExtendTimeStep = CreateConVar("sm_extendmap_timestep", "15", "Specifies how much many more minutes each extension makes", _, true, 5.0);

 	g_Cvar_ExtendRoundMax = CreateConVar("sm_extendmap_maxrounds", "30", "Specfies the maximum amount of rounds a map can be extended", _, true, 0.0);

 	g_Cvar_ExtendRoundStep = CreateConVar("sm_extendmap_roundstep", "5", "Specifies how many more rounds each extension makes", _, true, 5.0);

 	g_Cvar_ExtendFragMax = CreateConVar("sm_extendmap_maxfrags", "150", "Specfies the maximum frags allowed that a map can be extended.", _, true, 0.0);

 	g_Cvar_ExtendFragStep = CreateConVar("sm_extendmap_fragstep", "10", "Specifies how many more frags are allowed when map is extended.", _, true, 5.0);	

 	g_Cvar_Mapfile = CreateConVar("sm_mapvote_file", "configs/maps.ini", "Map file to use. (Def sourcemod/configs/maps.ini)");

 	g_Cvar_ExcludeMaps = CreateConVar("sm_mapvote_exclude", "5", "Specifies how many past maps to exclude from the vote.", _, true, 0.0);

 	g_Cvar_IncludeMaps = CreateConVar("sm_mapvote_include", "5", "Specifies how many maps to include in the vote.", _, true, 2.0, true, 6.0);

 	g_Cvar_NoVoteMode = CreateConVar("sm_mapvote_novote", "1", "Specifies whether or not MapChooser should pick a map if no votes are received.", _, true, 0.0, true, 1.0);

 	g_Cvar_Extend = CreateConVar("sm_mapvote_extend", "1", "Specifies whether or not MapChooser will allow the map to be extended.", _, true, 0.0, true, 1.0);

 	RegAdminCmd("sm_mapvote", Command_Mapvote, ADMFLAG_CHANGEMAP, "sm_mapvote - Forces MapChooser to attempt to run a map vote now.");

 	g_Cvar_Winlimit = FindConVar("mp_winlimit");

 	g_Cvar_Maxrounds = FindConVar("mp_maxrounds");

 	g_Cvar_Fraglimit = FindConVar("mp_fraglimit");

 	if (g_Cvar_Winlimit != INVALID_HANDLE || g_Cvar_Maxrounds != INVALID_HANDLE)

 	{

 		HookEvent("round_end", Event_RoundEnd);

 	}

 	if (g_Cvar_Fraglimit != INVALID_HANDLE)

 	{

 		HookEvent("player_death", Event_PlayerDeath);		

 	}

 	AutoExecConfig(true, "mapchooser");

 }

 public OnMapStart()

 {

 	g_Cvar_Nextmap = FindConVar("sm_nextmap");

 	if (g_Cvar_Nextmap == INVALID_HANDLE)

 	{

 		LogError("FATAL: Cannot find sm_nextmap cvar. Mapchooser not loaded.");

 		SetFailState("sm_nextmap not found");

 	}

 	if (LoadMaps())

 	{

 		CreateNextVote();

 		SetupTimeleftTimer();

 		SetConVarString(g_Cvar_Nextmap, "Pending Vote");

 	}

 }

 public OnMapEnd()

 {

 	g_HasVoteStarted = false;

 	g_RetryTimer = INVALID_HANDLE;

 	g_VoteTimer = INVALID_HANDLE;

 }

 public OnMapTimeLeftChanged()

 {

 	if (GetArraySize(g_MapList))

 	{

 		SetupTimeleftTimer();

 	}

 }

 SetupTimeleftTimer()

 {

 	new time;

 	if (GetMapTimeLeft(time) && time > 0)

 	{

 		new startTime = GetConVarInt(g_Cvar_StartTime) * 60;

 		if (time - startTime < 0)

 		{

 			InitiateVote();		

 		}

 		else

 		{

 			if (g_VoteTimer != INVALID_HANDLE)

 			{

 				KillTimer(g_VoteTimer);

 				g_VoteTimer = INVALID_HANDLE;

 			}	

 			g_VoteTimer = CreateTimer(float(time - startTime), Timer_StartMapVote, TIMER_FLAG_NO_MAPCHANGE);

 		}		

 	}

 }

 public Action:Timer_StartMapVote(Handle:timer)

 {

 	if (!GetArraySize(g_MapList))

 	{

 		return Plugin_Stop;

 	}		

 	if (timer == g_RetryTimer)

 	{

 		g_RetryTimer = INVALID_HANDLE;

 	}

 	else

 	{

 		g_VoteTimer = INVALID_HANDLE;

 	}

 	InitiateVote();

 	return Plugin_Stop;

 }

 /* You ask, why don't you just use team_score event? And I answer... Because CSS doesn't. */

 public Event_RoundEnd(Handle:event, const String:name[], bool:dontBroadcast)

 {

 	if (!GetArraySize(g_MapList) || g_HasVoteStarted)

 	{

 		return;

 	}

 	new winner = GetEventInt(event, "winner");

 	if (winner == 0 || winner == 1)

 	{

 		return;

 	}

 	static total;

 	total++;

 	new team[2], teamPos = -1;

 	for (new i; i < GetArraySize(g_TeamScores); i++)

 	{

 		GetArrayArray(g_TeamScores, i, team);

 		if (team[0] == winner)

 		{

 			teamPos = i;

 			break;

 		}		

 	}

 	if (teamPos == -1)

 	{

 		team[0] = winner;

 		team[1] = 1;

 		PushArrayArray(g_TeamScores, team);

 	}

 	else

 	{

 		team[1]++;

 		SetArrayArray(g_TeamScores, teamPos, team);

 	}	

 	if (g_Cvar_Winlimit != INVALID_HANDLE)

 	{

 		new winlimit = GetConVarInt(g_Cvar_Winlimit);

 		if (winlimit)

 		{

 			if (team[1] >= (winlimit - GetConVarInt(g_Cvar_StartRounds)))

 			{

 				InitiateVote();

 			}

 		}

 	}

 	if (g_Cvar_Maxrounds != INVALID_HANDLE)

 	{

 		new maxrounds = GetConVarInt(g_Cvar_Maxrounds);

 		if (maxrounds)

 		{

 			if (total >= (maxrounds - GetConVarInt(g_Cvar_StartRounds)))

 			{

 				InitiateVote();

 			}			

 		}

 	}

 }

 public Event_PlayerDeath(Handle:event, const String:name[], bool:dontBroadcast)

 {

 	if (!GetArraySize(g_MapList) || g_Cvar_Fraglimit == INVALID_HANDLE || g_HasVoteStarted)

 	{

 		return;

 	}

 	if (!GetConVarInt(g_Cvar_Fraglimit))

 	{

 		return;

 	}

 	new fragger = GetClientOfUserId(GetEventInt(event, "attacker"));

 	if (fragger && GetClientFrags(fragger) >= (GetConVarInt(g_Cvar_Fraglimit) - GetConVarInt(g_Cvar_StartFrags)))

 	{

 		InitiateVote();

 	}

 }

 public Action:Command_Mapvote(client, args)

 {

 	InitiateVote();

 	return Plugin_Handled;	

 }

 InitiateVote()

 {

 	if (g_HasVoteStarted || g_RetryTimer != INVALID_HANDLE)

 	{

 		return;

 	}

 	if (IsVoteInProgress())

 	{

 		// Can't start a vote, try again in 5 seconds.

 		g_RetryTimer = CreateTimer(5.0, Timer_StartMapVote, TIMER_FLAG_NO_MAPCHANGE);

 		return;

 	}		

 	g_HasVoteStarted = true;

 	g_VoteMenu = CreateMenu(Handler_MapVoteMenu, MenuAction:MENU_ACTIONS_ALL);

 	SetMenuTitle(g_VoteMenu, "Vote Nextmap");

 	decl String:map[32];

 	for (new i = 0; i < GetArraySize(g_NextMapList); i++)

 	{

 		GetArrayString(g_NextMapList, i, map, sizeof(map));

 		AddMenuItem(g_VoteMenu, map, map);

 	}

 	if (GetConVarBool(g_Cvar_Extend))

 	{

 		new bool:allowExtend, time;

 		if (GetMapTimeLimit(time) && time > 0 && time < GetConVarInt(g_Cvar_ExtendTimeMax))

 		{

 			allowExtend = true;

 		}

 		if (g_Cvar_Winlimit != INVALID_HANDLE && GetConVarInt(g_Cvar_Winlimit) < GetConVarInt(g_Cvar_ExtendRoundMax))

 		{

 			allowExtend = true;

 		}	

 		if (g_Cvar_Maxrounds != INVALID_HANDLE && GetConVarInt(g_Cvar_Maxrounds) < GetConVarInt(g_Cvar_ExtendRoundMax))

 		{

 			allowExtend = true;

 		}

 		if (g_Cvar_Fraglimit != INVALID_HANDLE && GetConVarInt(g_Cvar_Fraglimit) < GetConVarInt(g_Cvar_ExtendFragMax))

 		{

 			allowExtend = true;

 		}

 		if (allowExtend)

 		{

 			AddMenuItem(g_VoteMenu, VOTE_EXTEND, "Extend Map");

 		}

 	}

 	SetMenuExitButton(g_VoteMenu, false);

 	VoteMenuToAll(g_VoteMenu, 20);

 	LogMessage("Voting for next map has started.");

 	PrintToChatAll("[SM] %t", "Nextmap Voting Started");

 }

 public Handler_MapVoteMenu(Handle:menu, MenuAction:action, param1, param2)

 {

 	switch (action)

 	{

 		case MenuAction_End:

 		{

 			g_VoteMenu = INVALID_HANDLE;

 			CloseHandle(menu);

 		}

 		case MenuAction_Display:

 		{

 	 		decl String:buffer[255];

 			Format(buffer, sizeof(buffer), "%T", "Vote Nextmap", param1);

 			new Handle:panel = Handle:param2;

 			SetPanelTitle(panel, buffer);

 		}		

 		case MenuAction_DisplayItem:

 		{

 			if (GetMenuItemCount(menu) - 1 == param2)

 			{

 				decl String:map[64], String:buffer[255];

 				GetMenuItem(menu, param2, map, sizeof(map));

 				if (strcmp(map, VOTE_EXTEND, false) == 0)

 				{

 					Format(buffer, sizeof(buffer), "%T", "Extend Map", param1);

 					return RedrawMenuItem(buffer);

 				}

 			}

 		}		

 		// Why am I commented out? Because BAIL hasn't decided yet if

 		// vote notification will be built into the Vote API.

 		/*case MenuAction_Select:

 		{

 			decl String:Name[32], String:Map[32];

 			GetClientName(param1, Name, sizeof(Name));

 			GetMenuItem(menu, param2, Map, sizeof(Map));

 			PrintToChatAll("[SM] %s has voted for map '%s'", Name, Map);

 		}*/

 		case MenuAction_VoteCancel:

 		{

 			// If we receive 0 votes, pick at random.

 			if (param1 == VoteCancel_NoVotes && GetConVarBool(g_Cvar_NoVoteMode))

 			{

 				new count = GetMenuItemCount(menu);

 				new item = GetRandomInt(0, count - 1);

 				decl String:map[32];

 				GetMenuItem(menu, item, map, sizeof(map));

 				while (strcmp(map, VOTE_EXTEND, false) == 0)

 				{

 					item = GetRandomInt(0, count - 1);

 					GetMenuItem(menu, item, map, sizeof(map));

 				}

 				SetNextMap(map);			

 			}

 			else

 			{

 				// We were actually cancelled. What should we do?

 			}

 		}

 		case MenuAction_VoteEnd:

 		{

 			decl String:map[32];

 			GetMenuItem(menu, param1, map, sizeof(map));

 			if (strcmp(map, VOTE_EXTEND, false) == 0)

 			{

 				new time;

 				if (GetMapTimeLimit(time))

 				{

 					if (time > 0 && time < GetConVarInt(g_Cvar_ExtendTimeMax))

 					{

 						ExtendMapTimeLimit(GetConVarInt(g_Cvar_ExtendTimeStep)*60);						

 					}

 				}

 				if (g_Cvar_Winlimit != INVALID_HANDLE)

 				{

 					new winlimit = GetConVarInt(g_Cvar_Winlimit);

 					if (winlimit && winlimit < GetConVarInt(g_Cvar_ExtendRoundMax))

 					{

 						SetConVarInt(g_Cvar_Winlimit, winlimit + GetConVarInt(g_Cvar_ExtendRoundStep));

 					}					

 				}

 				if (g_Cvar_Maxrounds != INVALID_HANDLE)

 				{

 					new maxrounds = GetConVarInt(g_Cvar_Maxrounds);

 					if (maxrounds && maxrounds < GetConVarInt(g_Cvar_ExtendRoundMax))

 					{

 						SetConVarInt(g_Cvar_Maxrounds, maxrounds + GetConVarInt(g_Cvar_ExtendRoundStep));

 					}

 				}

 				if (g_Cvar_Fraglimit != INVALID_HANDLE)

 				{

 					new fraglimit = GetConVarInt(g_Cvar_Fraglimit);

 					if (fraglimit && fraglimit < GetConVarInt(g_Cvar_ExtendFragMax))

 					{

 						SetConVarInt(g_Cvar_Fraglimit, fraglimit + GetConVarInt(g_Cvar_ExtendFragStep));						

 					}

 				}

 				PrintToChatAll("[SM] %t", "Current Map Extended");

 				LogMessage("Voting for next map has finished. The current map has been extended.");

 				// We extended, so we'll have to vote again.

 				g_HasVoteStarted = false;

 				CreateNextVote();

 				SetupTimeleftTimer();

 			}

 			else

 			{

 				SetNextMap(map);

 			}

 		}

 	}

 	return 0;

 }

 SetNextMap(const String:map[])

 {

 	SetConVarString(g_Cvar_Nextmap, map);

 	PushArrayString(g_OldMapList, map);

 	if (GetArraySize(g_OldMapList) > GetConVarInt(g_Cvar_ExcludeMaps))

 	{

 		RemoveFromArray(g_OldMapList, 0);

 	}

 	PrintToChatAll("[SM] %t", "Nextmap Voting Finished", map);

 	LogMessage("Voting for next map has finished. Nextmap: %s.", map);	

 }

 CreateNextVote()

 {

 	if(g_NextMapList != INVALID_HANDLE)

 	{

 		ClearArray(g_NextMapList);

 	}

 	new Handle:tempMaps  = CreateArray(33);

 	decl String:map[32];

 	for (new i = 0; i < GetArraySize(g_MapList); i++)

 	{

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

 		PushArrayString(tempMaps, map);		

 	}

 	if (GetArraySize(tempMaps) > GetConVarInt(g_Cvar_ExcludeMaps))

 	{

 		for (new i = 0; i < GetArraySize(g_OldMapList); i++)

 		{

 			GetArrayString(g_OldMapList, i, map, sizeof(map));

 			for (new j = 0; j < GetArraySize(tempMaps); j++)

 			{

 				decl String:temp[32];

 				GetArrayString(tempMaps, j, temp, sizeof(temp));

 				if (strcmp(temp, map) == 0)

 				{

 					RemoveFromArray(tempMaps, j);

 					break;

 				}				

 			}

 		}	

 	}

 	new limit = (GetConVarInt(g_Cvar_IncludeMaps) < GetArraySize(tempMaps) ? GetConVarInt(g_Cvar_IncludeMaps) : GetArraySize(tempMaps));

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

 	{

 		new b = GetRandomInt(0, GetArraySize(tempMaps) - 1);

 		GetArrayString(tempMaps, b, map, sizeof(map));		

 		PushArrayString(g_NextMapList, map);

 		RemoveFromArray(tempMaps, b);

 	}

 }

 LoadMaps()

 {

 	new bool:fileFound;

 	decl String:mapPath[256], String:mapFile[64];

 	GetConVarString(g_Cvar_Mapfile, mapFile, 64);

 	BuildPath(Path_SM, mapPath, sizeof(mapPath), mapFile);

 	fileFound = FileExists(mapPath);

 	if (!fileFound)

 	{

 		new Handle:mapCycleFile = FindConVar("mapcyclefile");

 		GetConVarString(mapCycleFile, mapPath, sizeof(mapPath));

 		fileFound = FileExists(mapPath);

 	}

 	if (!fileFound)

 	{

 		LogError("Unable to locate sm_mapvote_file or mapcyclefile, no maps loaded.");

 		if (g_MapList != INVALID_HANDLE)

 		{

 			ClearArray(g_MapList);

 		}

 		return 0;		

 	}

 	// If the file hasn't changed, there's no reason to reload

 	// all of the maps.

 	new fileTime =  GetFileTime(mapPath, FileTime_LastChange);

 	if (g_mapFileTime == fileTime)

 	{

 		return GetArraySize(g_MapList);

 	}

 	g_mapFileTime = fileTime;

 	// Reset the array

 	if (g_MapList != INVALID_HANDLE)

 	{

 		ClearArray(g_MapList);

 	}

 	LogMessage("[SM] Loading mapchooser map file [%s]", mapPath);

 	new Handle:file = OpenFile(mapPath, "rt");

 	if (file == INVALID_HANDLE)

 	{

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

 		return 0;

 	}

 	decl String:currentMap[32];

 	GetCurrentMap(currentMap, sizeof(currentMap));	

 	decl String:buffer[64], len;

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

 	{

 		TrimString(buffer);

 		if ((len = StrContains(buffer, ".bsp", false)) != -1)

 		{

 			buffer[len] = '\0';

 		}

 		if (buffer[0] == '\0' || !IsValidConVarChar(buffer[0]) || !IsMapValid(buffer)

 			|| strcmp(currentMap, buffer, false) == 0)

 		{

 			continue;

 		}

 		PushArrayString(g_MapList, buffer);

 	}

 	CloseHandle(file);

 	return GetArraySize(g_MapList);

 }