-- Check if there are enough iron bars and an empty slot for the iron blocks
function checkInventory()
  local ironBarCount = 0
  local ironBlockCount = 0

  for slot = 1, 16 do
    local item = turtle.getItemDetail(slot)

    if item then
      if item.name == "minecraft:iron_bars" then
        ironBarCount = ironBarCount + item.count
      elseif item.name == "minecraft:iron_block" then
        ironBlockCount = ironBlockCount + item.count
      end
    end
  end

  return ironBarCount >= 9 and ironBlockCount < 64
end

-- Craft iron bars into iron blocks
function craftIronBlocks()
  turtle.select(1)
  turtle.transferTo(16, 9)  -- Move iron bars to slot 9 (crafting input slot)
  turtle.craft()

  while not turtle.dropUp() do
    sleep(1)
  end
end

-- Main program loop
function main()
  while true do
    if checkInventory() then
      craftIronBlocks()
    else
      sleep(5)
    end
  end
end

-- Start the program
main()