/**

 * 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>

#include <mapchooser>

#include <nextmap>

public Plugin:myinfo =

{

	name = "MapChooser",

	author = "AlliedModders LLC",

	description = "Automated Map Voting",

	version = SOURCEMOD_VERSION,

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

};

/* Valve ConVars */

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_Bonusroundtime = INVALID_HANDLE;

/* Plugin ConVars */

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_ExtendTimeStep = INVALID_HANDLE;

new Handle:g_Cvar_ExtendRoundStep = INVALID_HANDLE;

new Handle:g_Cvar_ExtendFragStep = 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_Cvar_DontChange = INVALID_HANDLE;

new Handle:g_Cvar_EndOfMapVote = INVALID_HANDLE;

new Handle:g_Cvar_VoteDuration = INVALID_HANDLE;

new Handle:g_VoteTimer = INVALID_HANDLE;

new Handle:g_RetryTimer = INVALID_HANDLE;

/* Data Handles */

new Handle:g_MapList = INVALID_HANDLE;

new Handle:g_NominateList = INVALID_HANDLE;

new Handle:g_NominateOwners = INVALID_HANDLE;

new Handle:g_OldMapList = INVALID_HANDLE;

new Handle:g_NextMapList = INVALID_HANDLE;

new Handle:g_VoteMenu = INVALID_HANDLE;

new g_Extends;

new g_TotalRounds;

new bool:g_HasVoteStarted;

new bool:g_WaitingForVote;

new bool:g_MapVoteCompleted;

new bool:g_ChangeMapAtRoundEnd;

new bool:g_ChangeMapInProgress;

new g_mapFileSerial = -1;

new g_NominateCount = 0;

new MapChange:g_ChangeTime;

new Handle:g_NominationsResetForward = INVALID_HANDLE;

/* Upper bound of how many team there could be */

#define MAXTEAMS 10

new g_winCount[MAXTEAMS];

#define VOTE_EXTEND "##extend##"

#define VOTE_DONTCHANGE "##dontchange##"

public OnPluginStart()

{

	LoadTranslations("mapchooser.phrases");

	LoadTranslations("common.phrases");

	new arraySize = ByteCountToCells(33);

	g_MapList = CreateArray(arraySize);

	g_NominateList = CreateArray(arraySize);

	g_NominateOwners = CreateArray(1);

	g_OldMapList = CreateArray(arraySize);

	g_NextMapList = CreateArray(arraySize);

	g_Cvar_EndOfMapVote = CreateConVar("sm_mapvote_endvote", "1", "Specifies if MapChooser should run an end of map vote", _, true, 0.0, true, 1.0);

	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. Use 0 on TF2 to start vote during bonus round time", _, true, 0.0);

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

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

	g_Cvar_ExtendRoundStep = CreateConVar("sm_extendmap_roundstep", "5", "Specifies how many more rounds each extension makes", _, true, 1.0);

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

	g_Cvar_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", "0", "Number of extensions allowed each map.", _, true, 0.0);

	g_Cvar_DontChange = CreateConVar("sm_mapvote_dontchange", "1", "Specifies if a 'Don't Change' option should be added to early votes", _, true, 0.0);

	g_Cvar_VoteDuration = CreateConVar("sm_mapvote_voteduration", "20", "Specifies how long the mapvote should be available for.", _, true, 5.0);

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

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

	g_Cvar_Winlimit = FindConVar("mp_winlimit");

	g_Cvar_Maxrounds = FindConVar("mp_maxrounds");

	g_Cvar_Fraglimit = FindConVar("mp_fraglimit");

	g_Cvar_Bonusroundtime = FindConVar("mp_bonusroundtime");

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

	{

		HookEvent("round_end", Event_RoundEnd);

		HookEventEx("teamplay_win_panel", Event_TeamPlayWinPanel);

		HookEventEx("teamplay_restart_round", Event_TFRestartRound);

		HookEventEx("arena_win_panel", Event_TeamPlayWinPanel);

	}

	if (g_Cvar_Fraglimit != INVALID_HANDLE)

	{

		HookEvent("player_death", Event_PlayerDeath);		

	}

	AutoExecConfig(true, "mapchooser");

	//Change the mp_bonusroundtime max so that we have time to display the vote

	//If you display a vote during bonus time good defaults are 17 vote duration and 19 mp_bonustime

	if (g_Cvar_Bonusroundtime != INVALID_HANDLE)

	{

		SetConVarBounds(g_Cvar_Bonusroundtime, ConVarBound_Upper, true, 30.0);		

	}

	g_NominationsResetForward = CreateGlobalForward("OnNominationRemoved", ET_Ignore, Param_String, Param_Cell);

}

public bool:AskPluginLoad(Handle:myself, bool:late, String:error[], err_max)

{

	RegPluginLibrary("mapchooser");	

	CreateNative("NominateMap", Native_NominateMap);

	CreateNative("InitiateMapChooserVote", Native_InitiateVote);

	CreateNative("CanMapChooserStartVote", Native_CanVoteStart);

	CreateNative("HasEndOfMapVoteFinished", Native_CheckVoteDone);

	CreateNative("GetExcludeMapList", Native_GetExcludeMapList);

	CreateNative("EndOfMapVoteEnabled", Native_EndOfMapVoteEnabled);

	return true;

}

public OnConfigsExecuted()

{

	if (ReadMapList(g_MapList,

					 g_mapFileSerial, 

					 "mapchooser",

					 MAPLIST_FLAG_CLEARARRAY|MAPLIST_FLAG_MAPSFOLDER)

		!= INVALID_HANDLE)

	{

		if (g_mapFileSerial == -1)

		{

			LogError("Unable to create a valid map list.");

		}

	}

	CreateNextVote();

	SetupTimeleftTimer();

	g_TotalRounds = 0;

	g_Extends = 0;

	g_MapVoteCompleted = false;

	g_NominateCount = 0;

	ClearArray(g_NominateList);

	ClearArray(g_NominateOwners);

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

	{

		g_winCount[i] = 0;	

	}

	/* Check if mapchooser will attempt to start mapvote during bonus round time - TF2 Only */

	if ((g_Cvar_Bonusroundtime != INVALID_HANDLE) && !GetConVarInt(g_Cvar_StartRounds))

	{

		if (GetConVarFloat(g_Cvar_Bonusroundtime) <= GetConVarFloat(g_Cvar_VoteDuration))

		{

			LogError("Warning - Bonus Round Time shorter than Vote Time. Votes during bonus round may not have time to complete");

		}

	}

}

public OnMapEnd()

{

	g_HasVoteStarted = false;

	g_WaitingForVote = false;

	g_ChangeMapAtRoundEnd = false;

	g_ChangeMapInProgress = false;

	g_VoteTimer = INVALID_HANDLE;

	g_RetryTimer = INVALID_HANDLE;

	decl String:map[32];

	GetCurrentMap(map, sizeof(map));

	PushArrayString(g_OldMapList, map);

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

	{

		RemoveFromArray(g_OldMapList, 0);

	}	

}

public OnClientDisconnect(client)

{

	new index = FindValueInArray(g_NominateOwners, client);

	if (index == -1)

	{

		return;

	}

	new String:oldmap[33];

	GetArrayString(g_NominateList, index, oldmap, sizeof(oldmap));

	Call_StartForward(g_NominationsResetForward);

	Call_PushString(oldmap);

	Call_PushCell(GetArrayCell(g_NominateOwners, index));

	Call_Finish();

	RemoveFromArray(g_NominateOwners, index);

	RemoveFromArray(g_NominateList, index);

	g_NominateCount--;

}

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", "Changed Next Map", map);

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

	SetNextMap(map);

	g_MapVoteCompleted = true;

	return Plugin_Handled;

}

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 && GetConVarBool(g_Cvar_EndOfMapVote) && !g_MapVoteCompleted && !g_HasVoteStarted)

		{

			InitiateVote(MapChange_MapEnd, INVALID_HANDLE);		

		}

		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);

			new Handle:data;

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

			WritePackCell(data, _:MapChange_MapEnd);

			WritePackCell(data, _:INVALID_HANDLE);

			ResetPack(data);

		}		

	}

}

public Action:Timer_StartMapVote(Handle:timer, Handle:data)

{

	if (timer == g_RetryTimer)

	{

		g_WaitingForVote = false;

		g_RetryTimer = INVALID_HANDLE;

	}

	else

	{

		g_VoteTimer = INVALID_HANDLE;

	}

	if (!GetArraySize(g_MapList) || !GetConVarBool(g_Cvar_EndOfMapVote) || g_MapVoteCompleted || g_HasVoteStarted)

	{

		return Plugin_Stop;

	}

	new MapChange:mapChange = MapChange:ReadPackCell(data);

	new Handle:hndl = Handle:ReadPackCell(data);

	InitiateVote(mapChange, hndl);

	return Plugin_Stop;

}

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

{

	/* Game got restarted - reset our round count tracking */

	g_TotalRounds = 0;	

}

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

{

	if (g_ChangeMapAtRoundEnd)

	{

		g_ChangeMapAtRoundEnd = false;

		CreateTimer(2.0, Timer_ChangeMap, INVALID_HANDLE, TIMER_FLAG_NO_MAPCHANGE);

		g_ChangeMapInProgress = true;

	}

	new bluescore = GetEventInt(event, "blue_score");

	new redscore = GetEventInt(event, "red_score");

	if(GetEventInt(event, "round_complete") == 1 || StrEqual(name, "arena_win_panel"))

	{

		g_TotalRounds++;

		if (!GetArraySize(g_MapList) || g_HasVoteStarted || g_MapVoteCompleted || !GetConVarBool(g_Cvar_EndOfMapVote))

		{

			return;

		}

		CheckMaxRounds(g_TotalRounds);

		switch(GetEventInt(event, "winning_team"))

		{

			case 3:

			{

				CheckWinLimit(bluescore);

			}

			case 2:

			{

				CheckWinLimit(redscore);				

			}			

			//We need to do nothing on winning_team == 0 this indicates stalemate.

			default:

			{

				return;

			}			

		}

	}

}

/* 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 (g_ChangeMapAtRoundEnd)

	{

		g_ChangeMapAtRoundEnd = false;

		CreateTimer(2.0, Timer_ChangeMap, INVALID_HANDLE, TIMER_FLAG_NO_MAPCHANGE);

		g_ChangeMapInProgress = true;

	}

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

	if (winner == 0 || winner == 1 || !GetConVarBool(g_Cvar_EndOfMapVote))

	{

		return;

	}

	if (winner >= MAXTEAMS)

	{

		SetFailState("Mod exceed maximum team count - Please file a bug report.");	

	}

	g_TotalRounds++;

	g_winCount[winner]++;

	if (!GetArraySize(g_MapList) || g_HasVoteStarted || g_MapVoteCompleted)

	{

		return;

	}

	CheckWinLimit(g_winCount[winner]);

	CheckMaxRounds(g_TotalRounds);

}

public CheckWinLimit(winner_score)

{	

	if (g_Cvar_Winlimit != INVALID_HANDLE)

	{

		new winlimit = GetConVarInt(g_Cvar_Winlimit);

		if (winlimit)

		{			

			if (winner_score >= (winlimit - GetConVarInt(g_Cvar_StartRounds)))

			{

				InitiateVote(MapChange_MapEnd, INVALID_HANDLE);

			}

		}

	}

}

public CheckMaxRounds(roundcount)

{		

	if (g_Cvar_Maxrounds != INVALID_HANDLE)

	{

		new maxrounds = GetConVarInt(g_Cvar_Maxrounds);

		if (maxrounds)

		{

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

			{

				InitiateVote(MapChange_MapEnd, INVALID_HANDLE);

			}			

		}

	}

}

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) || !GetConVarBool(g_Cvar_EndOfMapVote))

	{

		return;

	}

	if (g_MapVoteCompleted)

	{

		return;

	}

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

	if (!fragger)

	{

		return;

	}

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

	{

		InitiateVote(MapChange_MapEnd, INVALID_HANDLE);

	}

}

public Action:Command_Mapvote(client, args)

{

	InitiateVote(MapChange_MapEnd, INVALID_HANDLE);

	return Plugin_Handled;	

}

/**

 * Starts a new map vote

 *

 * @param when			When the resulting map change should occur.

 * @param inputlist		Optional list of maps to use for the vote, otherwise an internal list of nominations + random maps will be used.

 */

InitiateVote(MapChange:when, Handle:inputlist=INVALID_HANDLE)

{

	g_WaitingForVote = true;

	if (IsVoteInProgress())

	{

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

		//g_RetryTimer = CreateTimer(5.0, Timer_StartMapVote, _, TIMER_FLAG_NO_MAPCHANGE);

		new Handle:data;

		g_RetryTimer = CreateDataTimer(5.0, Timer_StartMapVote, data, TIMER_FLAG_NO_MAPCHANGE);

		WritePackCell(data, _:when);

		WritePackCell(data, _:inputlist);

		ResetPack(data);

		return;

	}

	/* If the main map vote has completed (and chosen result) and its currently changing (not a delayed change) we block further attempts */

	if (g_MapVoteCompleted && g_ChangeMapInProgress)

	{

		return;

	}

	g_ChangeTime = when;

	g_WaitingForVote = false;

	g_HasVoteStarted = true;

	g_VoteMenu = CreateMenu(Handler_MapVoteMenu, MenuAction:MENU_ACTIONS_ALL);

	SetMenuTitle(g_VoteMenu, "Vote Nextmap");

	SetVoteResultCallback(g_VoteMenu, Handler_MapVoteFinished);

	/**

	 * TODO: Make a proper decision on when to clear the nominations list.

	 * Currently it clears when used, and stays if an external list is provided.

	 * Is this the right thing to do? External lists will probably come from places

	 * like sm_mapvote from the adminmenu in the future.

	 */

	decl String:map[32];

	/* No input given - User our internal nominations and maplist */

	if (inputlist == INVALID_HANDLE)

	{

		new nominateCount = GetArraySize(g_NominateList);

		new voteSize = GetConVarInt(g_Cvar_IncludeMaps);

		/* Smaller of the two - It should be impossible for nominations to exceed the size though (cvar changed mid-map?) */

		new nominationsToAdd = nominateCount >= voteSize ? voteSize : nominateCount;

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

		{

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

			AddMenuItem(g_VoteMenu, map, map);

			/* Notify Nominations that this map is now free */

			Call_StartForward(g_NominationsResetForward);

			Call_PushString(map);

			Call_PushCell(GetArrayCell(g_NominateOwners, i));

			Call_Finish();

		}

		/* Clear out the rest of the nominations array */

		for (new i=nominationsToAdd; i<nominateCount; i++)

		{

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

			/* Notify Nominations that this map is now free */

			Call_StartForward(g_NominationsResetForward);

			Call_PushString(map);

			Call_PushCell(GetArrayCell(g_NominateOwners, i));

			Call_Finish();			

		}

		/* There should currently be 'nominationsToAdd' unique maps in the vote */

		new i = nominationsToAdd;

		new count = 0;

		new availableMaps = GetArraySize(g_NextMapList);

		while (i < voteSize)

		{

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

			count++;

			//Check if this map is in the nominate list (and thus already in the vote) */

			if (FindStringInArray(g_NominateList, map) == -1)

			{

				/* Insert the map and increment our count */

				AddMenuItem(g_VoteMenu, map, map);

				i++;

			}

			if (count >= availableMaps)

			{

				//Run out of maps, this will have to do.

				break;	

			}

		}

		/* Wipe out our nominations list - Nominations have already been informed of this */

		ClearArray(g_NominateOwners);

		ClearArray(g_NominateList);

	}

	else //We were given a list of maps to start the vote with

	{

		new size = GetArraySize(inputlist);

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

		{

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

			if (IsMapValid(map))

			{

				AddMenuItem(g_VoteMenu, map, map);

			}	

		}

	}

	/* Do we add any special items? */

	if ((when == MapChange_Instant || when == MapChange_RoundEnd) && GetConVarBool(g_Cvar_DontChange))

	{

		AddMenuItem(g_VoteMenu, VOTE_DONTCHANGE, "Don't Change");

	}

	else if (GetConVarBool(g_Cvar_Extend) && g_Extends < GetConVarInt(g_Cvar_Extend))

	{

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

	}

	new voteDuration = GetConVarInt(g_Cvar_VoteDuration);

	SetMenuExitButton(g_VoteMenu, false);

	VoteMenuToAll(g_VoteMenu, voteDuration);

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

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

}

public Handler_MapVoteFinished(Handle:menu,

						   num_votes, 

						   num_clients,

						   const client_info[][2], 

						   num_items,

						   const item_info[][2])

{

	if (num_votes == 0)

	{

		LogError("No Votes recorded yet Advanced callback fired - Tell pRED* to fix this");

		return;	

	}

	decl String:map[32];

	GetMenuItem(menu, item_info[0][VOTEINFO_ITEM_INDEX], map, sizeof(map));

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

	{

		g_Extends++;

		new time;

		if (GetMapTimeLimit(time))

		{

			if (time > 0)

			{

				ExtendMapTimeLimit(GetConVarInt(g_Cvar_ExtendTimeStep)*60);						

			}

		}

		if (g_Cvar_Winlimit != INVALID_HANDLE)

		{

			new winlimit = GetConVarInt(g_Cvar_Winlimit);

			if (winlimit)

			{

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

			}					

		}

		if (g_Cvar_Maxrounds != INVALID_HANDLE)

		{