local MAXIMUM_RESERVE_TIME = 60 --minutes
local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)
npcHandler:setMessage(MESSAGE_GREET, "Greetings, |PLAYERNAME|. I am here to offer the opportunity to enage in an {instanced war}. Maybe you have received an {invitation}? Or do you want to {enter} an ongoing war?")
NpcSystem.parseParameters(npcHandler)

local arenas = {}
local selected_arena = {}
local time = {}
local wartype = {}
local playerLimit = {}
local challengedguild = {}
local guild1 = {}
local guild2 = {}
local challengedArena = {}
local challengedDuration = {}
local challengedGuild1 = {}
local enemyGuild = {}
local disablePotions = {}
local numberOfArenas = {}
local talkState = {}

function onCreatureAppear(cid)              npcHandler:onCreatureAppear(cid)            end
function onCreatureDisappear(cid)           npcHandler:onCreatureDisappear(cid)         end
function onCreatureSay(cid, type, msg)      npcHandler:onCreatureSay(cid, type, msg)    end
function onThink()                          npcHandler:onThink()                        end

local function greetCallback(cid)
	--local player = Player(cid)
	--if(player:getGuild() == 0 or player:getGuild() == nil) then
		--selfSay("Hmpf.", cid)
		--return false
	--end


	--local guildLevel = player:getGuildLevel()
	--if guildLevel ~= 3 then
		--selfSay("Hmpf. Only guild leaders can speak to me.", cid)
		--return false
	--end
	talkState[cid] = 0
	return true
end

local function creatureSayCallback(cid, type, msg)
local talkUser = NPCHANDLER_CONVBEHAVIOR == CONVERSATION_DEFAULT and 0 or cid

	if not npcHandler:isFocused(cid) then
		return false
	end

	if talkState[talkUser] == 0 then
		--Find the player guild
		local playerGuild = getPlayerGuildId(cid)

		--Find the guild name
		local playerGuildName = getPlayerGuildName(cid)
-------------------------------------------------------------------------------------------------
---------------------------------------------hi--------------------------------------------------
---------------------------------------------war-------------------------------------------------
		if msg == "instanced war" or msgcontains(msg, "war") then
			if getPlayerGuildLevel(cid) == GUILDLEVEL_LEADER then
				selfSay("What is the name of the {enemy guild}?", cid)
				talkState[talkUser] = 1
			else
				selfSay("You are not the leader of your guild.", cid)
				talkState[talkUser] = 0
			end
---------------------------------------------enter-----------------------------------------------
		elseif(msgcontains(msg, "enter")) then
			if (isInWar(getPlayerGuildId(cid))) then
				--There is a war going on
				--Check for arena reservations
				local warArenaPos = getWarArena(cid)

				if(warArenaPos == nil) then
					selfSay("The limit of players on the arena has been reached.", cid)
					return false
				end
				query = "SELECT * FROM `guildwar_arenas` WHERE `inuse` = 1 and `guild2` = " .. getPlayerGuildId(cid) .. " or `guild1` = " .. getPlayerGuildId(cid)
				queryResult = db.storeQuery(query)
				local wartype = result.getDataString(queryResult, "type")

				result.free(queryResult)
				if(warArenaPos == false) then
					selfSay("No arena was reserved for your war.", cid)
					return false
				else
					doPlayerSendTextMessage(cid, 22, "You have been teleported to the arena.")
					setPlayerStorageValue(cid, 18774, 1)
					if wartype == 0 then
						setPlayerStorageValue(cid, 18775, 0)
					elseif wartype == 1 then
						setPlayerStorageValue(cid, 18775, 1)
					elseif wartype == 2 then
						setPlayerStorageValue(cid, 18775, 2)
					end
					doTeleportThing(cid, warArenaPos, false)
				end
			else
				selfSay("Your guild is not in a war.", cid)
				return false
			end
			return false
---------------------------------------------invitation------------------------------------------
		elseif(msgcontains(msg, "invitation")) then
			if(msg == playerGuildName) then
				selfSay("The only battlefield one can fight oneself is in one's mind.",cid)
				talkState[talkUser] = 0
				return false
			end

			query = "SELECT * FROM `guildwar_arenas` WHERE `pending` = 1 and `guild2` = " .. getPlayerGuildId(cid) .. " or `guild1` = " .. getPlayerGuildId(cid)
			queryResult = db.storeQuery(query)
			local pending = result.getDataInt(queryResult, "pending")
			if(pending == 0) then
				selfSay("There are no pending war invitations for your guild,", cid)
				result.free(queryResult)
				return false
			end

			--See if it was found
			if(queryResult == false) then
				selfSay("There are no pending war invitations for your guild,", cid)
				result.free(queryResult)
				return false
			else
				local guild1 = result.getDataInt(queryResult, "guild1")
				local guild2 = result.getDataInt(queryResult, "guild2")
				local arena = result.getDataString(queryResult, "name")
				local wartype = result.getDataString(queryResult, "type")
				local duration = result.getDataString(queryResult, "duration")
				local potionDisabled = result.getDataInt(queryResult, "disablePotions")
				local limitOfPlayers= result.getDataInt(queryResult, "maxplayers")
				local potionstring = "{with all potions}"
				challengedArena[cid] = arena
				challengedDuration[cid] = duration
				challengedGuild1[cid] = guild1
				if(wartype == "0") then
					warstring = "{default}"
				elseif(wartype == "1") then
					warstring = "{no UE}"
				elseif(wartype == "2") then
					warstring = "{SD only}"
				end
				if(potionDisabled == 1) then
					potionstring = "{without ultimate potions}"
				end
				if getPlayerGuildId(cid) == guild1 then
					query = "SELECT `name` FROM `guilds` WHERE `id` = " .. guild1
				else
					query = "SELECT `name` FROM `guilds` WHERE `id` = " .. guild2
				end

				queryResult = db.storeQuery(query)
				selfSay("You have been invited to a " .. warstring .. " war " .. potionstring .. " by {" .. result.getDataString(queryResult, "name") .. ",} the arena chosen is {" .. arena .. "}, the duration is set to {" .. duration .. " minutes} and the limit of players is {" .. limitOfPlayers .. "} on each side. Do you want to {accept}?", cid)
				talkState[talkUser] = 12
				result.free(queryResult)
				return false
			end
		end
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
	elseif talkState[talkUser] == 1 then
		--Find the player guild
		local playerGuild = getPlayerGuildId(cid)

		--Find the guild name
		local playerGuildName = getPlayerGuildName(cid)
		if(msg == playerGuildName) then
			selfSay("The only battlefield one can fight oneself is in one's mind.",cid)
			talkState[talkUser] = 1
			return false
		end

		if getGuild(msg) == nil then
			selfSay("The guild ".. msg .. " does not exist.",cid)
			talkState[talkUser] = 1
			return false
		end

		--Prepare a db query
		--local query = "SELECT * FROM `guild_wars` WHERE `guild_id` = " .. getPlayerGuildId(cid) .. " or  `enemy_id` = " .. getPlayerGuildId(cid)
		local query = "SELECT * FROM `guild_wars` WHERE NOT `status` = 5 and `guild_id` = " .. getPlayerGuildId(cid) .. " OR  `enemy_id` = " .. getPlayerGuildId(cid) .. " AND NOT `status` =5"

		--Use it
		local queryResult = db.storeQuery(query)

		if (queryResult == false) then
			selfSay("Your guild is not in a war with ".. msg .. ".",cid)
			talkState[talkUser] = 0
			return false
		end

		local temporaryStatus = false
		while (queryResult ~= false and temporaryStatus == false) do
			guild1[cid] = result.getDataInt(queryResult, "guild_id")
			guild2[cid] = result.getDataInt(queryResult, "enemy_id")
			local status = result.getDataInt(queryResult, "status")
			if status == 1 and (getGuildId(msg) == guild1[cid] or getGuildId(msg) == guild2[cid]) then
				temporaryStatus = true
			else
				result.next(queryResult)
			end
		end
		result.free(queryResult)

		--Find out if the guild is in war
		if(temporaryStatus == false) then
			print("Erro aqui!! UM")
			selfSay("Your guild is not in a war with ".. msg .. ".",cid)
			talkState[talkUser] = 0
			return false
		end


		challengedguild[cid] = msg
		free_arenas_string = getFreeArenas(cid)
		if(free_arenas_string == nil or free_arenas_string == "" or free_arenas_string == false or free_arenas_string == true) then
			selfSay("Unfortunately there are no free arenas. I'm sorry.", cid)
			talkState[talkUser] = 0
			result.free(queryResult)
		else
			selfSay("The free arenas are " .. free_arenas_string .. " Which one do you want?", cid)
			talkState[talkUser] = 2
			result.free(queryResult)
		end
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
---------------------------------------------selected arena------------------------------------
	elseif talkState[talkUser] == 2 then
		local isValid = false
		local arena = 0
		print("free arenas:")
		--for k,v in pairs(arenas[cid]) do print(k, v) end
		print("number of free arenas: " .. #arenas[cid] )
		for arena = 0, #arenas[cid], 1 do
			if(arenas[cid][arena] ~= nil) then
				if(msgcontains(msg,arenas[cid][arena])) then
					selected_arena[cid] = arenas[cid][arena]
					isValid = true
					selfSay(selected_arena[cid] .. ", very well. For how much time, in {minutes}, do you want to fight?", cid)
					talkState[talkUser] = 3
					return false
				end
			end
		end
		if(not isValid) then
			selfSay("What? There was no option with that name.", cid)
			return false
		end
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
---------------------------------------------selected arena------------------------------------
---------------------------------------------selected time-------------------------------------
	elseif talkState[talkUser] == 3 then
		time[cid] = tonumber(msg)
		if(time[cid] > MAXIMUM_RESERVE_TIME) then
			time[cid] = 0
			selfSay("The limit is 60 minutes, unfortunately.", cid)
			return false
		end
		selfSay("Perfect, do you want a {default} war, {no UE} war or {SD only} war?", cid)
		talkState[talkUser] = 4
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
---------------------------------------------selected arena------------------------------------
---------------------------------------------selected time-------------------------------------
---------------------------------------------selected type-------------------------------------
	elseif talkState[talkUser] == 4 then
		if(msgcontains(msg, "default")) then
			wartype[cid] = 0
		elseif(msgcontains(msg, "UE") or msgcontains(msg, "ue")) then
			wartype[cid] = 1
		elseif(msgcontains(msg, "SD") or msgcontains(msg, "sd")) then
			wartype[cid] = 2
		else
			selfSay("What? There was no option with that name.", cid)
			return false
		end
		talkState[talkUser] = 6
		disablePotions[cid] = 0
		selfSay("Lastly, would you like to limit the number of players? If yes, say the {number} of players allowed. If not, say {no}.", cid)
		return false
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
---------------------------------------------selected arena------------------------------------
---------------------------------------------selected time-------------------------------------
---------------------------------------------selected type-------------------------------------
---------------------------------------------potions-------------------------------------------
	elseif talkState[talkUser] == 5 then
		if(msgcontains(msg, "disable") or msgcontains(msg, "yes")) then
			disablePotions[cid] = 1
		elseif(msgcontains(msg,"no")) then
			disablePotions[cid] = 0
		else
			selfSay("Would you like to disable the supreme potions potions? {Yes} or {no}.", cid)
			talkState[talkUser] = 5
			return false
		end
		selfSay("Lastly, would you like to limit the number of players? If yes, say the {number} of players allowed. If not, say {no}.", cid)
		talkState[talkUser] = 6
		return false
---------------------------------------------war-----------------------------------------------
---------------------------------------------enemy guild name----------------------------------
---------------------------------------------selected arena------------------------------------
---------------------------------------------selected time-------------------------------------
---------------------------------------------selected type-------------------------------------
---------------------------------------------potions-------------------------------------------
---------------------------------------------player limit--------------------------------------
	elseif talkState[talkUser] == 6 then
		if(msgcontains(msg,"no")) then
			playerLimit[cid] = 1000
		else
			if(tonumber(msg) == nil) then
				playerLimit[cid] = 1000
			else
				playerLimit[cid] = tonumber(msg)
			end
		end
		selfSay("The war invitation is open now. The leader of the enemy guild must accept the invitation. The invitation expires in {one minute}. Good luck, " .. getPlayerName(cid) .. ".", cid)
		registerWarInvitation(selected_arena[cid], guild1[cid], guild2[cid], time[cid], wartype[cid], cid, disablePotions[cid], playerLimit[cid])
		broadcastMessage("Leader of guild " .. getPlayerGuildName(cid) .. " " .. getPlayerName(cid) .. " has challenged guild " .. challengedguild[cid] .. " to an instanced war on " .. selected_arena[cid] .. " with a duration of " .. time[cid] .. " minutes. The challenge will expire in 60 seconds.")
		talkState[talkUser] = 0
---------------------------------------------invitation-----------------------------------------------
	elseif talkState[talkUser] == 12 then
		if(msgcontains(msg,"yes") or msgcontains(msg,"accept")) then
			query = "UPDATE `guildwar_arenas` SET `playersOnTeamA`=0, `playersOnTeamB`=0, `start` = " .. os.time() .. ", `pending` = 0, `inuse` = 1 WHERE `name` = \"" .. challengedArena[cid] .. "\""
			db.query(query)
			selfSay("The arena is now open. Say {enter} to enter.", cid)
			addEvent(freeArena, 10 + 60*challengedDuration[cid]*1000, challengedArena[cid])
			talkState[talkUser] = 0
			broadcastMessage("Leader of guild " .. getPlayerGuildName(cid) .. " " .. getPlayerName(cid) .. " has accepted the challenge.")
			return false
		elseif(msgcontains(msg,"no")) then
			query = "UPDATE `guildwar_arenas` SET `end` = " .. os.time() .. ", `inuse` = 0, `guild1` = 0, `guild2` = 0 WHERE `name` = \"" .. challengedArena[cid] .. "\""
			db.query(query)
			selfSay("Alright, alright. The invitation was {refused}.", cid)
			talkState[talkUser] = 0
		end
	end
	return true
end

--local function onAddFocus(cid)
	--time[cid] = 0
	--time[cid] = 0
	--wartype[cid] = 0
	--selected_arena[cid] = 0
--end

--local function onReleaseFocus(cid)
	--time[cid] = nil
	--wartype[cid] = nil
	--selected_arena[cid] = nil
--end

--npcHandler:setCallback(CALLBACK_ONADDFOCUS, onAddFocus)
--npcHandler:setCallback(CALLBACK_ONRELEASEFOCUS, onReleaseFocus)

npcHandler:setCallback(CALLBACK_GREET, greetCallback)
npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:addModule(FocusModule:new())


---------------------------------------------------------------------
-----LIB FOR WAR SYSTEM----------------------------------------------
---------------------------------------------------------------------


function registerWarInvitation(arena, guild1, guild2, duration, wartype, cid, disablePotions, playerLimit)
	local invitationQuery = "UPDATE `guildwar_arenas` SET `challenger` = " .. getPlayerGuildId(cid) .. ",  `maxplayers`= ".. playerLimit .. ",  `disablePotions`= ".. disablePotions .. ", `type`= " .. wartype .. ", `duration` = " .. duration .. " ,`start` = " .. os.time() .. ", `end` = 0, `inuse` = 0, `pending` = 1, `guild1` = " .. guild1 .. ", `guild2` = " .. guild2 .. " WHERE `name` = \"" .. arena .. "\""
	db.query(invitationQuery)
	addEvent(revokeWarInvitation, 60*1000, arena)
	return true
end

function revokeWarInvitation(arena)
	--print("The invitation has expired.")
	query = "UPDATE `guildwar_arenas` SET `pending` = 0 WHERE `name` = \"" .. arena .. "\""
	db.query(query)
end

function freeArena(arenaName)
	print("Reserve time is over, freeing arena " .. arenaName .. ".")
	local query = "SELECT * FROM `guildwar_arenas` WHERE `name` = \"" .. arenaName .. "\""
	local queryResult = db.storeQuery(query)
	if(query == false) then
		print("[Warning] Could not free arena: arena not found on table.")
		return false
	end

	local guild1 = result.getDataInt(queryResult, "guild1")
	local guild2 = result.getDataInt(queryResult, "guild2")

	print("Guilds involved: " .. guild1 .. " and " .. guild2)

	local inuse = result.getDataInt(queryResult, "inuse")
	if(inuse == 0) then
		print("[Warning] Could not free arena: arena was already free.")
		return false
	end
	query = "UPDATE `guildwar_arenas` SET `end` = " .. os.time() .. ", `inuse` = 0, `guild1` = 0, `guild2` = 0 WHERE `name` = \"" .. arenaName .. "\""
	db.query(query)
	print (arenaName .. " is now free to be used again.")
	local onlinePlayers = getPlayersOnline()
	for unused, targetPlayer in ipairs(onlinePlayers) do
		if(getPlayerStorageValue(targetPlayer, STORAGE_PLAYER_IN_ARENA) == 1) then
			print(getPlayerName(targetPlayer) .. " was inside the arena;")
			print(getPlayerName(targetPlayer) .. " is a member of guild " .. getPlayerGuildId(targetPlayer))
			if((getPlayerGuildId(targetPlayer) == guild1 or getPlayerGuildId(targetPlayer) == guild2)) then
				doTeleportThing(targetPlayer, getTownTemplePosition(getPlayerTown(targetPlayer)), false)
				setPlayerStorageValue(targetPlayer, STORAGE_PLAYER_IN_ARENA, 0)
				setPlayerStorageValue(targetPlayer, STORAGE_PLAYER_WAR_TYPE, 0)
				setPlayerStorageValue(targetPlayer, STORAGE_PLAYER_DISABLED_POTIONS, 0)
				print(getPlayerName(targetPlayer) .. " has been sent back to temple.")
			end
		end
	end

	result.free(queryResult)
end

function getFreeArenas(cid)
	local listOfFreeArenas = {}
	local arena_names = ""
	--Find available arenas
	--See if it was found
	query = "SELECT * FROM `guildwar_arenas` WHERE `inuse` = 0"
	--print("Running query " .. query)
	queryResult = db.storeQuery(query)
	if(queryResult == false) then
		return false
	end
	arenas[cid] = {}
	while queryResult ~= false do
		local currentArenaName = result.getDataString(queryResult, "name")
		if(currentArenaName == nil) then print ("nil") end
		table.insert(arenas[cid], currentArenaName)
		print("inserted " .. currentArenaName)
		arena_names = arena_names .. "{" .. currentArenaName .. "}, "
		if (not result.next(queryResult)) then
			break
		end
	end
	numberOfArenas[cid] = #arenas[cid]
	--arenas[cid] = listOfFreeArenas
	result.free(queryResult)
	return arena_names
end

function isInWar(playerGuildId)
	--Prepare a db query
	local query = "SELECT * FROM `guild_wars` WHERE `guild_id` = " .. playerGuildId .. " or  `enemy_id` = " .. playerGuildId

	--Use it
	local queryResult = db.storeQuery(query)

	--Find out if the guild is in war
	if(queryResult == false) then
		return false
	end

	--Extract the results
	local guild1 = result.getDataInt(queryResult, "guild_id")
	local guild2 = result.getDataInt(queryResult, "enemy_id")
	local status = result.getDataInt(queryResult, "status")

	--Free result
	result.free(queryResult)

	if(status == 0) then
		return false
	else
		return true
	end
end

function getWarArena(cid)
	local playerGuildId = getPlayerGuildId(cid)
	print("[DEBUG] Guild Id = " .. tostring(playerGuildId))
	--Check for arena reservations
	query = "SELECT * FROM `guildwar_arenas` WHERE `guild1` = " .. playerGuildId .. " or `guild2` = " .. playerGuildId .." and `inuse`=1"
	queryResult = db.storeQuery(query)

	if(queryResult == false) then
		result.free(queryResult)
		return false
	end

	--Extract query results
	local arena_mapname = result.getDataString(queryResult, "name")
	local arena_inuse = result.getDataInt(queryResult, "inuse")
	local numberOfPlayersOnTeamA = result.getDataInt(queryResult, "playersOnTeamA")
	local numberOfPlayersOnTeamB = result.getDataInt(queryResult, "playersOnTeamB")
	local maxPlayers = result.getDataInt(queryResult, "maxplayers")


	if(arena_inuse == 0) then
		result.free(queryResult)
		return false
	end

	local guild1 = result.getDataInt(queryResult, "guild1")
	local guild2 = result.getDataInt(queryResult, "guild2")
	local arena_team_a_pos = {x = result.getDataInt(queryResult, "team_a_posx"), y = result.getDataInt(queryResult, "team_a_posy"), z = result.getDataInt(queryResult, "team_a_posz")}
	local arena_team_b_pos = {x = result.getDataInt(queryResult, "team_b_posx"), y = result.getDataInt(queryResult, "team_b_posy"), z = result.getDataInt(queryResult, "team_b_posz")}
	local war_type = result.getDataInt(queryResult, "type")
	local disabledPotions = result.getDataInt(queryResult,"disablePotions")
	local limitOfPlayers = result.getDataInt(queryResult,"maxplayers")

	--Player on the guild1 will be sent to arena pos A
	--Players on the guild2 will be sent to arena pos B
	if(playerGuildId == guild1) then
		if(numberOfPlayersOnTeamA == maxPlayers) then
			return nil
		end
		result.free(queryResult)
		local updatequery = "UPDATE  `guildwar_arenas` SET `playersOnTeamA` = " .. tostring(numberOfPlayersOnTeamA+1) .. " WHERE `name` = \"" .. arena_mapname .. "\""
		setPlayerStorageValue(cid, STORAGE_PLAYER_IN_ARENA, 1)
		setPlayerStorageValue(cid, STORAGE_PLAYER_TEAM, 1)
		setPlayerStorageValue(cid, STORAGE_PLAYER_WAR_TYPE, war_type)
		setPlayerStorageValue(cid, STORAGE_PLAYER_DISABLED_POTIONS, disabledPotions)
		db.query(updatequery)
		result.free(queryResult)
		return arena_team_a_pos
	elseif(playerGuildId == guild2) then
		if(numberOfPlayersOnTeamB == maxPlayers) then
			return nil
		end
		result.free(queryResult)
		setPlayerStorageValue(cid, STORAGE_PLAYER_IN_ARENA, 1)
		setPlayerStorageValue(cid, STORAGE_PLAYER_TEAM, 2)
		setPlayerStorageValue(cid, STORAGE_PLAYER_WAR_TYPE, war_type)
		setPlayerStorageValue(cid, STORAGE_PLAYER_DISABLED_POTIONS, disabledPotions)
		local updatequery = "UPDATE  `guildwar_arenas` SET `playersOnTeamB` = " .. tostring(numberOfPlayersOnTeamB+1) .. " WHERE `name` = \"" .. arena_mapname .. "\""
		db.query(updatequery)
		result.free(queryResult)
		return arena_team_b_pos
	else
		print("Warning: Error on enter war script.")
		print("Player guild id: " .. playerGuildId)
		print("Guild1 id: " .. guild1)
		print("Guild2 id: " .. guild2)
		result.free(queryResult)
		return false
	end
	result.free(queryResult)
	return false
end