if type(MTH_HUNTERBOOK_TABS) ~= "table" then MTH_HUNTERBOOK_TABS = {} end

MTH_HUNTERBOOK_TABS.items = {
	headerLabel = "Ranged Weapons",
	columnLabels = { "ID", "Req", "Lvl", "Type", "Name", "DPS", "Speed", "Source" },
	columnLayout = {
		{ x = 8, width = 36, align = "LEFT" },
		{ x = 44, width = 30, align = "LEFT" },
		{ x = 74, width = 30, align = "LEFT" },
		{ x = 104, width = 62, align = "LEFT" },
		{ x = 166, width = 188, align = "LEFT" },
		{ x = 356, width = 44, align = "LEFT" },
		{ x = 402, width = 40, align = "LEFT" },
		{ x = 444, width = 108, align = "LEFT" },
	},
}

MTH_HUNTERBOOK_TABS.projectiles = {
	headerLabel = "Projectiles",
	columnLabels = { "ID", "Req", "Lvl", "Type", "Name", "DPS", "Source" },
	columnLayout = {
		{ x = 8, width = 36, align = "LEFT" },
		{ x = 44, width = 30, align = "LEFT" },
		{ x = 74, width = 30, align = "LEFT" },
		{ x = 104, width = 62, align = "LEFT" },
		{ x = 166, width = 228, align = "LEFT" },
		{ x = 396, width = 44, align = "LEFT" },
		{ x = 442, width = 110, align = "LEFT" },
	},
}

MTH_HUNTERBOOK_TABS.ammobags = {
	headerLabel = "Ammo Bags",
	columnLabels = { "ID", "Req", "Lvl", "Slots", "Type", "Name", "Source" },
	columnLayout = {
		{ x = 8, width = 40, align = "LEFT" },
		{ x = 50, width = 36, align = "LEFT" },
		{ x = 88, width = 34, align = "LEFT" },
		{ x = 124, width = 42, align = "LEFT" },
		{ x = 168, width = 80, align = "LEFT" },
		{ x = 250, width = 192, align = "LEFT" },
		{ x = 444, width = 108, align = "LEFT" },
	},
}

function MTH_BOOK_NormalizeItemSubtype(value)
	local subtype = MTH_BOOK_SafeLower(value)
	subtype = string.gsub(subtype, "^%s+", "")
	subtype = string.gsub(subtype, "%s+$", "")
	if subtype == "arrows" then return "arrow" end
	if subtype == "bullets" then return "bullet" end
	if subtype == "ammo pouch" or subtype == "ammo pouches" then return "ammopouch" end
	if subtype == "quivers" then return "quiver" end
	if subtype == "bows" then return "bow" end
	if subtype == "rifle" or subtype == "rifles" then return "gun" end
	if subtype == "cross bow" or subtype == "cross-bow" or subtype == "crossbows" or subtype == "xbow" or subtype == "xbows" then return "crossbow" end
	return subtype
end

function MTH_BOOK_IsRangedWeaponSubtype(subtype)
	return subtype == "bow" or subtype == "gun" or subtype == "crossbow"
end

local function MTH_BOOK_IsProjectileSubtype(subtype)
	return subtype == "arrow" or subtype == "bullet"
end

local function MTH_BOOK_IsAmmoBagSubtype(subtype)
	return subtype == "quiver" or subtype == "ammopouch"
end

function MTH_BOOK_ItemMatches(itemId, item)
	if not item then return false end
	if item.notingame then return false end
	local itemSubtype = MTH_BOOK_NormalizeItemSubtype(item.subtype)
	local rawSubtype = MTH_BOOK_SafeLower(item.subtype)
	rawSubtype = string.gsub(rawSubtype, "^%s+", "")
	rawSubtype = string.gsub(rawSubtype, "%s+$", "")
	local mode = tostring(MTH_BOOK_STATE and MTH_BOOK_STATE.mode or "items")
	if mode == "projectiles" then
		if not MTH_BOOK_IsProjectileSubtype(itemSubtype) then return false end
	elseif mode == "ammobags" then
		local hasSlots = tonumber(item.slots) and tonumber(item.slots) > 0
		local looksLikeAmmoBag = MTH_BOOK_IsAmmoBagSubtype(itemSubtype)
			or rawSubtype == "ammo pouch"
			or rawSubtype == "ammo pouches"
			or rawSubtype == "quiver"
			or rawSubtype == "quivers"
			or hasSlots
		if not looksLikeAmmoBag then return false end
	else
		if not MTH_BOOK_IsRangedWeaponSubtype(itemSubtype) then return false end
	end
	local selectedSubtype = MTH_BOOK_NormalizeItemSubtype(MTH_BOOK_STATE.itemSubtype)
	if selectedSubtype ~= "all" and itemSubtype ~= selectedSubtype then return false end
	if MTH_BOOK_STATE.itemOnlyMyLevel then
		local playerLevel = MTH_BOOK_GetPlayerLevelValue()
		local reqLevel = tonumber(item.reqlevel)
		if playerLevel and reqLevel and reqLevel > playerLevel then
			return false
		end
	end
	if MTH_BOOK_STATE.flag1 and not MTH_BOOK_HasEntries(item.vendors) then return false end
	if MTH_BOOK_STATE.flag2 and not MTH_BOOK_HasEntries(item.drops) then return false end
	if MTH_BOOK_STATE.flag3 and not MTH_BOOK_HasEntries(item.objects) then return false end

	if MTH_BOOK_STATE.search ~= "" then
		local localizedName = (MTH and MTH.GetLocalizedItemName)
			and MTH:GetLocalizedItemName(itemId, item.name)
			or item.name
		local name = MTH_BOOK_SafeLower(localizedName)
		local idText = tostring(itemId)
		if string.find(name, MTH_BOOK_STATE.search, 1, true) == nil and string.find(idText, MTH_BOOK_STATE.search, 1, true) == nil then return false end
	end

	return true
end

function MTH_BOOK_ItemSort(a, b)
	local items = MTH_BOOK_GetItemsTable()
	local ia = items and items[a]
	local ib = items and items[b]
	if not ia or not ib then return a < b end
	local la = ia.level or 0
	local lb = ib.level or 0
	if la ~= lb then return la < lb end
	local na = (MTH and MTH.GetLocalizedItemName) and MTH:GetLocalizedItemName(a, ia.name) or (ia.name or "")
	local nb = (MTH and MTH.GetLocalizedItemName) and MTH:GetLocalizedItemName(b, ib.name) or (ib.name or "")
	if na ~= nb then return na < nb end
	return a < b
end