local internalNpcName = "The Lootmonger"
local npcType = Game.createNpcType(internalNpcName)
local npcConfig = {}

npcConfig.name = internalNpcName
npcConfig.description = internalNpcName

npcConfig.health = 100
npcConfig.maxHealth = npcConfig.health
npcConfig.walkInterval = 2000
npcConfig.walkRadius = 2

npcConfig.outfit = {
	lookType = 1575,
	lookHead = 96,
	lookBody = 101,
	lookLegs = 120,
	lookFeet = 120,
	lookAddons = 2,
}

npcConfig.flags = {
	floorchange = false,
}

local keywordHandler = KeywordHandler:new()
local npcHandler = NpcHandler:new(keywordHandler)

npcType.onThink = function(npc, interval)
	npcHandler:onThink(npc, interval)
end

npcType.onAppear = function(npc, creature)
	npcHandler:onAppear(npc, creature)
end

npcType.onDisappear = function(npc, creature)
	npcHandler:onDisappear(npc, creature)
end

npcType.onMove = function(npc, creature, fromPosition, toPosition)
	npcHandler:onMove(npc, creature, fromPosition, toPosition)
end

npcType.onSay = function(npc, creature, type, message)
	npcHandler:onSay(npc, creature, type, message)
end

npcType.onCloseChannel = function(npc, creature)
	npcHandler:onCloseChannel(npc, creature)
end

npcHandler:addModule(FocusModule:new(), npcConfig.name, true, true, true)

npcConfig.shop = LootShopConfig

local function creatureSayCallback(npc, player, type, message)
	if not npcHandler:checkInteraction(npc, player) then
		return false
	end
	local categoryTable = LootShopConfigTable[message:lower()]
	if MsgContains(message, "shop options") then
		npcHandler:say("I sell a selection of " .. GetFormattedShopCategoryNames(LootShopConfigTable), npc, player)
	elseif categoryTable then
		local remainingCategories = npc:getRemainingShopCategories(message:lower(), LootShopConfigTable)
		npcHandler:say("Of course, just browse through my wares. You can also look at " .. remainingCategories .. ".", npc, player)
		npc:openShopWindowTable(player, categoryTable)
	end
end

npcHandler:setCallback(CALLBACK_MESSAGE_DEFAULT, creatureSayCallback)
npcHandler:setMessage(MESSAGE_GREET, "Ah, a customer! Be greeted, |PLAYERNAME|! I buy all kinds of loot, would you like a {trade}? I can also show you my {shop options}.")
npcHandler:setMessage(MESSAGE_SENDTRADE, "Ah, a customer! Be greeted, |PLAYERNAME|! I buy all kinds of loot, would you look at " .. GetFormattedShopCategoryNames(LootShopConfigTable) .. ".")

-- On buy npc shop message
npcType.onBuyItem = function(npc, player, itemId, subType, amount, ignore, inBackpacks, totalCost)
	npc:sellItem(player, itemId, amount, subType, 0, ignore, inBackpacks)
end
-- On sell npc shop message
npcType.onSellItem = function(npc, player, itemId, subtype, amount, ignore, name, totalCost)
	player:sendTextMessage(MESSAGE_TRADE, string.format("Sold %ix %s for %i gold.", amount, name, totalCost))
end
-- On check npc shop message (look item)
npcType.onCheckItem = function(npc, player, clientId, subType) end

npcType:register(npcConfig)
