local SLOT_COUNT = 16
local STEPS = 0
function checkFuel()

    turtle.select(1)
    if(turtle.getFuelLevel() < 50) then
        print("Attempting Refuel...")
        for slot = 1, SLOT_COUNT, 1 do
            turtle.select(slot)
            if(turtle.refuel(1)) then
                return true
            end
        end

        return false
    else
        return true
    end
end

function dig()
	for i = 1, 22 do
		while turtle.inspect() ~= "minecraft:bedrock" do
			print("TO NIE BEDROCK")
			turtle.dig()
			turtle.digDown()
			turtle.digUp()
			if not turtle.detect() then
				checkFuel()
				turtle.forward()
				STEPS = STEPS + 1
			end
		end
		print("WRACAM")
		for n = 1, STEPS do
			turtle.back()
			turtle.turnLeft()
			turtle.forward()
			turtle.turnRight()
		end
		STEPS = 0
	end
end

dig()