local worktable = {}
local xbg = default.gui_bg..default.gui_bg_img..default.gui_slots

local nodes = { -- Nodes allowed to be cut.
	"default:wood", "default:junglewood", "default:pine_wood", "default:acacia_wood",
	"default:tree", "default:jungletree", "default:pine_tree", "default:acacia_tree",
	"default:cobble", "default:mossycobble", "default:desert_cobble",
	"default:stone", "default:sandstone", "default:desert_stone", "default:obsidian",
	"default:stonebrick", "default:sandstonebrick", "default:desert_stonebrick", "default:obsidianbrick",
	"default:coalblock", "default:copperblock", "default:steelblock", "default:goldblock", 
	"default:bronzeblock", "default:mese", "default:diamondblock",
	"default:brick", "default:cactus", "default:ice", "default:meselamp",
	"default:glass", "default:obsidian_glass",

	"xdecor:coalstone_tile", "xdecor:desertstone_tile", "xdecor:stone_rune", "xdecor:stone_tile",
	"xdecor:hard_clay", "xdecor:packed_ice", "xdecor:moonbrick",
	"xdecor:woodframed_glass", "xdecor:wood_tile"
}

local def = { -- Nodebox name, anzhal, definition.
	{"nanoslab", 16, {-.5,-.5,-.5,0,-.4375,0}},
	{"micropanel", 16, {-.5,-.5,-.5,.5,-.4375,0}},
	{"microslab", 8, {-.5,-.5,-.5,.5,-.4375,.5}},
	{"thinstair", 8, {{-.5,-.0625,-.5,.5,0,0},{-.5,.4375,0,.5,.5,.5}}},
	{"cube", 4, {-.5,-.5,0,0,0,.5}},
	{"panel", 4, {-.5,-.5,-.5,.5,0,0}},
	{"slab", 2, {-.5,-.5,-.5,.5,0,.5}},
	{"doublepanel", 2, {{-.5,-.5,-.5,.5,0,0},{-.5,0,0,.5,.5,.5}}},
	{"halfstair", 2, {{-.5,-.5,-.5,0,0,.5},{-.5,0,0,0,.5,.5}}},
	{"outerstair", 1, {{-.5,-.5,-.5,.5,0,.5},{-.5,0,0,0,.5,.5}}},
	{"stair", 1, {{-.5,-.5,-.5,.5,0,.5},{-.5,0,0,.5,.5,.5}}},
	{"innerstair", 1, {{-.5,-.5,-.5,.5,0,.5},{-.5,0,0,.5,.5,.5},{-.5,0,-.5,0,.5,0}}}
}

function worktable.crafting(pos)
	local meta = minetest.get_meta(pos)
	return "size[8,7;]"..xbg..
		"list[current_player;main;0,3.3;8,4;]"..
		"image[5,1;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
		"list[current_player;craft;2,0;3,3;]"..
		"list[current_player;craftpreview;6,1;1,1;]"
end

function worktable.storage(pos)
	local inv = minetest.get_meta(pos):get_inventory()
	local f = "size[8,7]"..xbg..
		"list[context;storage;0,0;8,2;]list[current_player;main;0,3.25;8,4;]"
	inv:set_size("storage", 8*2)
	return f
end

function worktable.construct(pos)
	local meta = minetest.get_meta(pos)
	local inv = meta:get_inventory()

	inv:set_size("forms", 4*3)
	inv:set_size("input", 1)
	inv:set_size("tool", 1)
	inv:set_size("hammer", 1)

	local formspec = "size[8,7;]"..xbg..
		"list[context;forms;4,0;4,3;]" ..
		"label[0.95,1.23;Cut]box[-0.05,1;2.05,0.9;#555555]"..
		"image[3,1;1,1;gui_furnace_arrow_bg.png^[transformR270]"..
		"label[0.95,2.23;Repair]box[-0.05,2;2.05,0.9;#555555]"..
		"image[0,1;1,1;xdecor_saw.png]image[0,2;1,1;xdecor_anvil.png]"..
		"image[3,2;1,1;hammer_layout.png]"..
		"list[current_name;input;2,1;1,1;]"..
		"list[current_name;tool;2,2;1,1;]list[current_name;hammer;3,2;1,1;]"..
		"button[0,0;2,1;craft;Crafting]"..
		"button[2,0;2,1;storage;Storage]"..
		"list[current_player;main;0,3.25;8,4;]"

	meta:set_string("formspec", formspec)
	meta:set_string("infotext", "Work Table")
end

function worktable.fields(pos, _, fields, sender)
	local player = sender:get_player_name()
	local inv = minetest.get_meta(pos):get_inventory()

	if fields.storage then
		minetest.show_formspec(player, "", worktable.storage(pos))
	end
	if fields.craft then
		minetest.show_formspec(player, "", worktable.crafting(pos))
	end
end

function worktable.dig(pos, _)
	local inv = minetest.get_meta(pos):get_inventory()
	if not inv:is_empty("input") or not inv:is_empty("hammer") or not
			inv:is_empty("tool") or not inv:is_empty("storage") then
		return false
	end
	return true
end

function worktable.put(_, listname, _, stack, _)
	local stn = stack:get_name()
	local count = stack:get_count()
	local mat = table.concat(nodes)

	if listname == "forms" then return 0 end
	if listname == "input" then
		if mat:match(stn) then return count end
		return 0
	end
	if listname == "hammer" then
		if stn ~= "xdecor:hammer" then return 0 end
	end
	if listname == "tool" then
		local tdef = minetest.registered_tools[stn]
		local twear = stack:get_wear()
		if not (tdef and twear > 0) then return 0 end
	end
	return count
end

function worktable.take(_, listname, _, stack, _)
	if listname == "forms" then return -1 end
	return stack:get_count()
end

function worktable.move(_, from_list, _, to_list, _, count, _)
	if from_list == "storage" and to_list == "storage" then
		return count else return 0 end
end

local function update_inventory(inv, inputstack)
	if inv:is_empty("input") then inv:set_list("forms", {}) return end
	local output = {}

	for _, n in pairs(def) do
		local mat = inputstack:get_name()
		local input = inv:get_stack("input", 1)
		local count = math.min(n[2] * input:get_count(), inputstack:get_stack_max())

		output[#output+1] = string.format("%s_%s %d", mat, n[1], count)
	end
	inv:set_list("forms", output)
end

function worktable.on_put(pos, listname, _, stack, _)
	if listname == "input" then
		local inv = minetest.get_meta(pos):get_inventory()
		update_inventory(inv, stack)
	end
end

function worktable.on_take(pos, listname, index, stack, _)
	local inv = minetest.get_meta(pos):get_inventory()
	if listname == "input" then
		update_inventory(inv, stack)
	elseif listname == "forms" then
		local inputstack = inv:get_stack("input", 1)
		inputstack:take_item(math.ceil(stack:get_count() / def[index][2]))
		inv:set_stack("input", 1, inputstack)
		update_inventory(inv, inputstack)
	end
end

xdecor.register("worktable", {
	description = "Work Table",
	groups = {cracky=2, choppy=2},
	sounds = default.node_sound_wood_defaults(),
	tiles = {
		"xdecor_worktable_top.png", "xdecor_worktable_top.png",
		"xdecor_worktable_sides.png", "xdecor_worktable_sides.png",
		"xdecor_worktable_front.png", "xdecor_worktable_front.png"
	},
	can_dig = worktable.dig,
	on_construct = worktable.construct,
	on_receive_fields = worktable.fields,
	on_metadata_inventory_put = worktable.on_put,
	on_metadata_inventory_take = worktable.on_take,
	allow_metadata_inventory_put = worktable.put,
	allow_metadata_inventory_take = worktable.take,
	allow_metadata_inventory_move = worktable.move
})

local function description(node, shape)
	local desc = node:gsub("%w+:", " "):gsub("_", " "):gsub(" %l", string.upper):sub(2)..
		" "..shape:gsub("^%l", string.upper)
	return desc
end

local function groups(node)
	if node:find("tree") or node:find("wood") or node:find("cactus") then
		return {choppy=3, not_in_creative_inventory=1}
	end
	return {cracky=3, not_in_creative_inventory=1}
end

local function shady(shape)
	if shape == "stair" or shape == "slab" or shape == "innerstair" or
			shape == "outerstair" then return false end
	return true
end

local function tiles(node, ndef)
	if node:find("glass") then return {node:gsub(":", "_")..".png"} end
	return ndef.tiles
end

for _, d in pairs(def) do
for _, n in pairs(nodes) do
	local ndef = minetest.registered_nodes[n]
	if ndef then
		minetest.register_node(":"..n.."_"..d[1], {
			description = description(n, d[1]),
			paramtype = "light",
			paramtype2 = "facedir",
			drawtype = "nodebox",
			light_source = ndef.light_source,
			sounds = ndef.sounds,
			tiles = tiles(n, ndef),
			groups = groups(n),
			node_box = {type = "fixed", fixed = d[3]},
			sunlight_propagates = shady(d[1]),
			on_place = minetest.rotate_node
		})
	end
	minetest.register_alias("xdecor:"..d[1].."_"..n:match(":(.+)"), n.."_"..d[1])
end
end

minetest.register_abm({
	nodenames = {"xdecor:worktable"},
	interval = 3, chance = 1,
	action = function(pos, _, _, _)
		local inv = minetest.get_meta(pos):get_inventory()
		local tool = inv:get_stack("tool", 1)
		local hammer = inv:get_stack("hammer", 1)
		local wear = tool:get_wear()

		if tool:is_empty() or hammer:is_empty() or wear == 0 then return end

		-- Wear : 0-65535 | 0 = new condition.
		tool:add_wear(-500)
		hammer:add_wear(300)

		inv:set_stack("tool", 1, tool)
		inv:set_stack("hammer", 1, hammer)
	end
})