copy_tool.lua

---------------
-- Copy Tool --
---------------

local function get_vendor_pos_and_settings(pointed_thing)
	if pointed_thing.type ~= "node" then return false end
	local pos = core.get_pointed_thing_position(pointed_thing, false)
	local node = core.get_node(pos)
	if node.name == "fancy_vend:display_node" then
		pos.y = pos.y - 1
		node = core.get_node(pos)
	end
	if not fancy_vend.is_vendor(node.name) then return false end
	local settings = fancy_vend.get_vendor_settings(pos)
	return pos, settings
end

core.register_tool("fancy_vend:copy_tool", {
	inventory_image = "copier.png",
	description = "Geminio Wand (For copying vendor settings, right click to"..
		"copy settings, left click to paste settings.)",
	stack_max = 1,
	on_place = function(itemstack, placer, pointed_thing)
		local pos, settings = get_vendor_pos_and_settings(pointed_thing)
		if not pos then return end

		local meta = itemstack:get_meta()
		meta:set_string("settings", core.serialize(settings))

		core.chat_send_player(placer:get_player_name(), "Settings saved.")

		return itemstack
	end,
	on_use = function(itemstack, user, pointed_thing)
		local pos, current_settings = get_vendor_pos_and_settings(pointed_thing)
		if not pos then return end

		local meta = itemstack:get_meta()
		local node_meta = core.get_meta(pos)
		local new_settings = core.deserialize(meta:get_string("settings"))
		if not new_settings then
			core.chat_send_player(user:get_player_name(),
				"No settings to set with. Right-click first on the vendor you want to copy settings from."
			)
			return
		end

		if fancy_vend.can_modify_vendor(pos, user) then

			new_settings.input_item = current_settings.input_item
			new_settings.input_item_qty = current_settings.input_item_qty
			new_settings.output_item = current_settings.output_item
			new_settings.output_item_qty = current_settings.output_item_qty

			-- Admin vendor priv check
			if not core.check_player_privs(node_meta:get_string("owner"), {admin_vendor = true}) and
				new_settings.admin_vendor then
				new_settings.admin_vendor = current_settings.admin_vendor
			end

			fancy_vend.set_vendor_settings(pos, new_settings)
			fancy_vend.refresh_vendor(pos)
			core.chat_send_player(user:get_player_name(), "Settings set at "..core.pos_to_string(pos)..".")
		else
			core.chat_send_player(user:get_player_name(), "You cannot modify this vendor.")
		end
	end,
})

core.register_craft({
	output = "fancy_vend:copy_tool",
	recipe = {
		{"default:stick","",                      ""               },
		{"",             "default:obsidian_shard",""               },
		{"",             "",                      "default:diamond"},
	}
})

core.register_craft({
	output = "fancy_vend:copy_tool",
	recipe = {
		{"",               "",                      "default:stick"},
		{"",               "default:obsidian_shard",""             },
		{"default:diamond","",                      ""             },
	}
})