local args = {...}

if not #args == 1 then
  print("Usage: hole <radius>")
  print("Place chest/s in slot 16 (will be automatically placed and filled when inventory is full)")
  return
end

local radius = tonumber(args[1])

function checkFuel()
	while turtle.getFuelLevel() < 10 do
		print("Error: Low fuel")
		for i=1,15 do
			turtle.select(i)
			turtle.refuel()
		end
		sleep(1)
	end
end

function checkInv()
  isFull = true

  for i=1,15 do
    if turtle.getItemCount(i) == 0 then
      isFull = false
    end
  end

  if isFull == true then
    turtle.select(16)
    while not turtle.placeUp() do turtle.digUp() end
    for i=1,15 do
      turtle.select(i)
      turtle.dropUp()
    end
  end
end

function digToHellAndBack()
	for z=0,43 do

		local success, data = turtle.inspectDown()
		if success then
			print("Block name: ", data.name)
			print("Block metadata: ", data.metadata)
			if data.name == "minecraft:bedrock" then
				break
			end
		end

		turtle.digDown()
		while not turtle.down() do sleep(0.1) end
	end
	for z=0,43 do
		while not turtle.up() do sleep(0.1) end
	end
end


for i=0,1024 do
	if i > radius then
		break
	end

	for j=0,1 do
		for j=0,1024 do
			if j > i then
				break
			end
			checkFuel()
			checkInv()
			digToHellAndBack()
			turtle.dig()
			while not turtle.forward() do sleep(0.1) end
		end
		turtle.turnRight()
	end
end