-- LUALOCALS < ---------------------------------------------------------
local ItemStack, ipairs, minetest, nodecore, pairs, type
    = ItemStack, ipairs, minetest, nodecore, pairs, type
-- LUALOCALS > ---------------------------------------------------------

nodecore.amcoremod()

local modname = minetest.get_current_modname()

local metadescs = {
	"Tote (1 Slot)",
	"Tote (2 Slots)",
	"Tote (3 Slots)",
	"Tote (4 Slots)",
	"Tote (5 Slots)",
	"Tote (6 Slots)",
	"Tote (7 Slots)",
	"Tote (8 Slots)",
}

local function totedug(pos, _, _, digger)
	local dump
	for dx = -1, 1 do
		for dz = -1, 1 do
			local p = {x = pos.x + dx, y = pos.y, z = pos.z + dz}
			local n = minetest.get_node(p)
			local d = minetest.registered_items[n.name] or {}
			if d and d.groups and d.groups.totable then
				local m = minetest.get_meta(p):to_table()
				for _, v1 in pairs(m.inventory or {}) do
					for k2, v2 in pairs(v1) do
						if type(v2) == "userdata" then
							v1[k2] = v2:to_string()
						end
					end
				end
				dump = dump or {}
				dump[#dump + 1] = {
					x = dx,
					z = dz,
					n = n,
					m = m
				}
				minetest.remove_node(p)
			end
		end
	end
	local drop = ItemStack(modname .. ":handle")
	if dump then
		local meta = drop:get_meta()
		meta:set_string("carrying", minetest.serialize(dump))
		meta:set_string("description", metadescs[#dump])
	end
	minetest.handle_node_drops(pos, {drop}, digger)
end

local function toteplace(stack, _, pointed)
	local pos = nodecore.buildable_to(pointed.under) and pointed.under
	or nodecore.buildable_to(pointed.above) and pointed.above
	if not pos then return stack end

	stack = ItemStack(stack)
	local inv = stack:get_meta():get_string("carrying")
	inv = inv and (inv ~= "") and minetest.deserialize(inv)
	if not inv then
		minetest.set_node(pos, {name = stack:get_name()})
		stack:set_count(stack:get_count() - 1)
		return stack
	end

	local commit = {{pos, {name = stack:get_name()}, {}}}
	for _, v in ipairs(inv) do
		if commit then
			local p = {x = pos.x + v.x, y = pos.y, z = pos.z + v.z}
			if not nodecore.buildable_to(p) then
				commit = nil
			else
				commit[#commit + 1] = {p, v.n, v.m}
			end
		end
	end
	if commit then
		for _, v in ipairs(commit) do
			minetest.set_node(v[1], v[2])
			minetest.get_meta(v[1]):from_table(v[3])
		end
		stack:set_count(stack:get_count() - 1)
	end
	return stack
end

minetest.register_node(modname .. ":handle", {
		description = "Tote Handle",
		meta_descriptions = metadescs,
		drawtype = "nodebox",
		node_box = nodecore.fixedbox(
			{-0.5, -0.5, -0.5, 0.5, -3/8, 0.5},
			{-0.5, -3/8, -0.5, -3/8, 3/8, -3/8},
			{-0.5, -3/8, 3/8, -3/8, 3/8, 0.5},
			{3/8, -3/8, -0.5, 0.5, 3/8, -3/8},
			{3/8, -3/8, 3/8, 0.5, 3/8, 0.5},
			{-0.5, 1/4, -0.5, -3/8, 3/8, 0.5},
			{3/8, 1/4, -0.5, 0.5, 3/8, 0.5},
			{-0.5, 3/8, -1/8, 0.5, 0.5, 1/8}
		),
		selection_box = nodecore.fixedbox(),
		paramtype = "light",
		tiles = {
			"nc_lode_annealed.png",
			"nc_lode_annealed.png",
			"nc_lode_annealed.png^[lowpart:75:nc_tree_tree_side.png"
			.. "^[lowpart:12.5:nc_lode_annealed.png"
		},
		groups = {
			snappy = 1,
			container = 1,
			fire_fuel = 5
		},
		stack_max = 1,
		after_dig_node = totedug,
		on_place = toteplace,
		drop = "",
		sounds = nodecore.sounds("nc_lode_annealed")
	})

nodecore.register_craft({
		label = "craft tote handle",
		norotate = true,
		nodes = {
			{match = "nc_woodwork:frame", replace = "air"},
			{y = -1, match = "nc_lode:block_annealed", replace = modname .. ":handle"},
			{y = -1, x = 1, match = "nc_woodwork:shelf"},
			{y = -1, x = -1, match = "nc_woodwork:shelf"},
			{y = -1, z = 1, match = "nc_woodwork:shelf"},
			{y = -1, z = -1, match = "nc_woodwork:shelf"},
		}
	})