local STORAGE = 18008

local TASKSTATE_COMPLETED = 1
local TASKSTATE_BOSS = 2
local TASKSTATE_FINALIZED = 3

local tasks = {
	[18009] = {storage = 18009, kills = 5000, position = Position(1302, 2110, 10), corners = {Position(1296, 2104, 10), Position(1309, 2216, 10)}, monsters = {'The Horned Fox'}, once = false},
	[18010] = {storage = 18010, kills = 3000, position = Position(1337, 2111, 10), corners = {Position(1331, 2101, 10), Position(1343, 2120, 10)}, monsters = {'Brutus Bloodbeard', 'Lethal Lissy', 'Ron the Ripper', 'Deadeye Devious'}, once = false},
	[18011] = {storage = 18011, kills = 2000, position = Position(1377, 2115, 10), corners = {Position(1369, 2107, 10), Position(1385, 2121, 10)}, monsters = {'Leviathan'}, once = false},
	[18012] = {storage = 18012, kills = 1500, position = Position(1435, 2121, 10), corners = {Position(1427, 2110, 10), Position(1451, 2128, 10)}, monsters = {'The Noxious Spawn'}, once = false},
	[18013] = {storage = 18013, kills = 6666, position = Position(1296, 2161, 10), corners = {Position(1284, 2154, 10), Position(1307, 2171, 10)}, monsters = {'Orshabaal'}, once = true},
	[18014] = {storage = 18014, kills = 2000, position = Position(1352, 2161, 10), corners = {Position(1341, 2151, 10), Position(1361, 2171, 10)}, monsters = {'Stonecracker'}, once = false},
	[18015] = {storage = 18015, kills = 2000, position = Position(1398, 2167, 10), corners = {Position(1389, 2149, 10), Position(1413, 2173, 10)}, monsters = {'The Many'}, once = false},
	[18016] = {storage = 18016, kills = 10000, position = Position(1440, 2161, 10), corners = {Position(1433, 2154, 10), Position(1451, 2170, 10)}, monsters = {'Demodras'}, once = false},
	[18017] = {storage = 18017, kills = 4000, position = Position(1294, 2203, 10), corners = {Position(1286, 2196, 10), Position(1304, 2212, 10)}, monsters = {'Necropharus'}, once = false},
	[18018] = {storage = 18018, kills = 5000, position = Position(1345, 2202, 10), corners = {Position(1333, 2193, 10), Position(1357, 2212, 10)}, monsters = {'The Old Widow'}, once = false},
	[18019] = {storage = 18019, kills = 500, position = Position(1392, 2205, 10), corners = {Position(1383, 2192, 10), Position(1399, 2215, 10)}, monsters = {'Massacre'}, once = false},
	[18020] = {storage = 18020, kills = 500, position = Position(1436, 2205, 10), corners = {Position(1428, 2199, 10), Position(1440, 2211, 10)}, monsters = {'The Handmaiden'}, once = false},
	[18021] = {storage = 18021, kills = 1000, position = Position(1285, 2238, 10), corners = {Position(1282, 2235, 10), Position(1290, 2241, 10)}, monsters = {'Mr. Punish'}, once = false},
	[18022] = {storage = 18022, kills = 2000, position = Position(1335, 2244, 10), corners = {Position(1327, 2237, 10), Position(1344, 2250, 10)}, monsters = {'Coutness Sorrow'}, once = false},
	[18023] = {storage = 18023, kills = 2000, position = Position(1389, 2248, 10), corners = {Position(1379, 2243, 10), Position(1396, 2252, 10)}, monsters = {'Wizard'}, once = false},
	[18024] = {storage = 18024, kills = 2000, position = Position(1432, 2252, 10), corners = {Position(1427, 2241, 10), Position(1442, 2255, 10)}, monsters = {'The Death'}, once = false}
}

local p = Position(1080, 2094, 7)

local function finish(cid, f, t)
	if isPlayer(cid) and isInRange(getThingPosition(cid), f, t) then
		doTeleportThing(cid, getTownTemplePosition(getPlayerTown(cid)))
		doCreatureSay(cid, 'Your time is over.', TALKTYPE_MONSTER_SAY, false, cid)
	end
end

local function kick(cid, message)
	doTeleportThing(cid, p)
	doCreatureSay(cid, message, TALKTYPE_MONSTER_SAY, false, cid)
end

function onStepIn(cid, item, position, lastPosition, fromPosition, toPosition, actor)
	if not isPlayer(cid) then
		return true
	end

	if getCreatureStorage(cid, STORAGE) == EMPTY_STORAGE then
		doTeleportThing(cid, p)
		doSendMagicEffect(p, CONST_ME_TELEPORT)
		doCreatureSay(cid, 'You are not doing any task at this moment. Speak with Grizzly Adams to start one.', TALKTYPE_MONSTER_SAY, false, cid)
		return true
	end

	local task = tasks[item.uid]
	if task then
		local kills = getCreatureStorage(cid, task.storage)

		if kills == EMPTY_STORAGE then
			kick(cid, 'You are doing another task at the moment.')
		elseif kills <= task.kills then
			kick(cid, 'You haven\'t killed enough monsters to enter this magic forcefield. You have already killed '.. kills ..' out of '.. task.kills ..' monsters.')
		elseif kills == task.kills + TASKSTATE_COMPLETED then
			kick(cid, 'You have to talk with Grizzly Adams first.')
		elseif kills == task.kills + TASKSTATE_BOSS then
			local players, monsters = getPlayersInRange(task.corners[1], task.corners[2]), getMonstersInRange(task.corners[1], task.corners[2])

			if #players > 0 then
				kick(cid, getCreatureName(players[1]) ..' is killing boss at the moment, please try again later.')
			end

			if #monsters > 0 then
				for _, monster in ipairs(monsters) do
					doRemoveCreature(monster)
				end
			end

			doTeleportThing(cid, task.position)
			local monster = task.monsters[math.random(#task.monsters)]
			doCreateMonster(monster, task.position)

			doCreatureSetStorage(cid, STORAGE, EMPTY_STORAGE)

			if task.once then
				doCreatureSetStorage(cid, task.storage, task.kills + TASKSTATE_FINALIZED)
				doCreatureSay(cid, 'You have 15 minutes to kill '.. monster ..'. Moreover, you only have one opportunity to kill '.. monster ..'! You can\'t do this task again. Good luck!', TALKTYPE_MONSTER_SAY, false, cid)
				addEvent(finish, 15 * 60 * 1000, cid, task.corners[1], task.corners[2])
			else
				doCreatureSetStorage(cid, task.storage, EMPTY_STORAGE)
				doCreatureSay(cid, 'You have 15 minutes to kill '.. monster ..'. Moreover, if you don\'t kill the boss within that time, or you die, you will have to complete the task again. Good luck!', TALKTYPE_MONSTER_SAY, false, cid)
				addEvent(finish, 15 * 60 * 1000, cid, task.corners[1], task.corners[2])
			end
		end
	end

	return true
end