local drawer = peripheral.find("functionalstorage:oak_4")
local controller = peripheral.find("mekmissiles:missile_silo")

local engine_item = "mekmissiles:rocket_engine"
local body_item = "mekmissiles:rocket_body"
local nose_item = "mekmissiles:rocket_nose_cone"

local small_warhead = "mnwe:industrial_bomb"
local medium_warhead = "mnwe:nuclear_bomb"
local large_warhead = "mnwe:hydrogen_bomb"
local huge_warhead = "mnwe:antimatter_bomb"

if not drawer then
    print("No functional storage drawer found")
    return
end

if not controller then
    print("No missile silo controller found")
    return
end

-- Wait for redstone signal to start assembly
os.pullEvent("redstone")

local engine_slot = nil
local body_slot = nil
local nose_slot = nil

for i = 1, drawer.size() do
    local item = drawer.getItemDetail(i)
    if item then
        if item.name == engine_item then
            engine_slot = i
        elseif item.name == body_item then
            body_slot = i
        elseif item.name == nose_item then
            nose_slot = i
        end
    end
end

if not engine_slot then
    print("No rocket engine found in drawer")
    return
end

if not body_slot then
    print("No rocket body found in drawer")
    return
end

if not nose_slot then
    print("No rocket nose cone found in drawer")
    return
end

drawer.pushItems(peripheral.getName(controller), engine_slot, 1)
drawer.pushItems(peripheral.getName(controller), body_slot, 1)
drawer.pushItems(peripheral.getName(controller), nose_slot, 1)