local doc_identifier = {}
doc_identifier.huds = {}
doc_identifier.countdown_ids = {}

doc_identifier.place = function(itemstack, user, pointed_thing)
	local username = user:get_player_name()
	if pointed_thing.type == "node" then
		local pos = pointed_thing.under
		local node = minetest.get_node(pos)
		if minetest.registered_nodes[node.name] ~= nil then
			local nodedef = minetest.registered_nodes[node.name]
			if(node.name == "ignore") then
				return itemstack
			end
			if doc.entry_exists("nodes", node.name) then
				doc.show_entry(username, "nodes", node.name)
			else
				minetest.show_formspec(
					username, 
					"doc_identifier:error_missing_node_info",
					"size[12,2;]label[0,0.2;The identifier was unable to extract information from this block.]button_exit[4.5,1.5;3,1;okay;OK]"
				)
			end
		end
	else
		return itemstack
	end

	return itemstack
end


minetest.register_tool("doc_identifier:identifier_solid", {
	description = "block identifier",
	tool_capabilities = {},
	wield_image = "doc_identifier_identifier.png",
	inventory_image = "doc_identifier_identifier.png",
	liquids_pointable = false,
	on_place = doc_identifier.place,
	on_use = function(itemstack, user, pointed_thing)
		return ItemStack("doc_identifier:identifier_liquid")
	end,
})
minetest.register_tool("doc_identifier:identifier_liquid", {
	description = "block identifier",
	tool_capabilities = {},
	groups = { not_in_creative_inventory = 1 },
	wield_image = "doc_identifier_identifier_liquid.png",
	inventory_image = "doc_identifier_identifier_liquid.png",
	liquids_pointable = true,
	on_place = doc_identifier.place,
	on_use = function(itemstack, user, pointed_thing)
		return ItemStack("doc_identifier:identifier_solid")
	end,
})

minetest.register_alias("doc_identifier:identifier", "doc_identifier:identifier_solid")