local function allow_metadata_inventory_put(pos, listname, index, stack, player)
    if listname == "dst" then
        return 0
    end
    return stack:get_count()
end

local function allow_metadata_inventory_move(pos, from_list, from_index, to_list, to_index, count, player)
    if to_list == "dst" then return 0 end
    return count
end

sbz_api.recipe.register_craft_type({
    type = "engraver",
    description = "Engraving",
    icon = "engraver.png^[verticalframe:24:1",
    single = true,
})

sbz_api.register_stateful_machine("sbz_chem:engraver", {
    description = "Engraver",
    info_power_consume = 3400,
    tiles = {
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        "engraver.png^[verticalframe:24:1",
    },
    groups = { matter = 1 },
    paramtype2 = "4dir",
    allow_metadata_inventory_move = allow_metadata_inventory_move,
    allow_metadata_inventory_put = allow_metadata_inventory_put,

    input_inv = "src",
    output_inv = "dst",
    on_construct = function(pos)
        local meta = minetest.get_meta(pos)
        local inv = meta:get_inventory()
        inv:set_size("src", 2)
        inv:set_size("dst", 1)

        meta:set_string("formspec", [[
formspec_version[7]
size[8.2,9]
style_type[list;spacing=.2;size=.8]
list[current_player;main;0.2,5;8,4;]
list[context;src;1.5,1;2,2;]
listring[]
list[context;dst;4.5,1;2,2;]
listring[current_player;main]
listring[context;dst]
    ]])
    end,
    after_place_node = pipeworks.after_place,
    after_dig_node = pipeworks.after_dig,
    autostate = true,
    action = function(pos, _, meta, supply, demand)
        local power_needed = 3400
        local inv = meta:get_inventory()

        if demand + power_needed > supply then
            meta:set_string("infotext", "Not enough power")
            return power_needed, false
        else
            meta:set_string("infotext", "Engraving... Using 3400Cj")

            local src = inv:get_list("src")
            local out, count, decremented, index = sbz_api.recipe.resolve_craft(src, "engraver", true)

            if out == nil then
                meta:set_string("infotext", "Invalid/no recipe")
                return 0
            end

            if not inv:room_for_item("dst", out) then
                meta:set_string("infotext", "Full")
                return 0
            end

            local new_src = inv:get_stack("src", index)
            new_src:set_count(new_src:get_count() - decremented)
            inv:set_stack("src", index, new_src)
            inv:add_item("dst", out)
            sbz_api.play_sfx({ name = "simple_alloy_furnace_running", gain = 0.6 }, { pos = pos })
            return power_needed
        end
    end,
}, {
    tiles = {
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        "engraver_side.png",
        { name = "engraver.png", animation = { type = "vertical_frames", length = 1 } },
    },
    light_source = 14,
})


do -- Engraver recipe scope
    local Engraver = 'sbz_chem:engraver'
    local RM = 'sbz_resources:reinforced_matter'
    local LW = 'sbz_resources:laser_weapon'
    local EC = 'sbz_resources:emittrium_circuit'
    local St = 'sbz_resources:storinator'
    local Ne = 'sbz_meteorites:neutronium'
    core.register_craft({
        output = Engraver,
        recipe = {
            { RM, LW, RM },
            { EC, St, EC },
            { Ne, Ne, Ne },
        }
    })
end
