-- Refuel function
function fuel()
    turtle.refuel(1)
    print("Fuel level: ".. turtle.getFuelLevel())
end

-- Dig function
function dig()
    turtle.digDown()
    turtle.down()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()
    turtle.dig()
    turtle.forward()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()

    turtle.dig()
    turtle.forward()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()
    turtle.dig()
    turtle.forward()
    turtle.dig()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnLeft()
    turtle.forward()
    turtle.turnRight()
    turtle.turnRight()
end

print("## Excavating program ##")
fuel()
dig()