Turtle Rail Placer

function refuel()
  while turtle.getFuelLevel() ~= turtle.getFuelLimit do
    local nextSlot = turtle.getSelectedSlot() + 1
    if nextSlot%16 == 0 then
      turtle.select(16)
    else
      turtle.select(nextSlot%16)
    end
    if turtle.getFuelLevel() == turtle.getFuelLimit() then
      break
    end
    turtle.refuel()
  end
  turtle.select(1)
  print("Fuel Level: " .. turtle.getFuelLevel())
end

function checkRailsNotEmpty()
    --slots 1, 2, 3
    --no ternary b/c that would be messy
    if turtle.getItemCount(1) ~= 0 and turtle.getItemCount(2) ~= 0 and turtle.getItemCount(3) ~= 0 then
        return true
    else
        return false
    end
end
function getRails()
    --place ender chest
    turtle.select(16)
    turtle.place()
    --gets items from chest
    turtle.select(1)
    turtle.suck(64)
    turtle.select(2)
    turtle.suck(64)
    turtle.select(3)
    turtle.suck(64)
    --pickup ender chest
    turtle.select(16)
    turtle.dig()

end

refuel()
turtle.select(1)
print("Starting in 15 seconds")
sleep(15)
while true do
    if checkRailsNotEmpty() then
        turtle.forward()
        turtle.select(3)
        turtle.placeDown()

        turtle.forward()
        turtle.select(2)
        turtle.placeDown()

        turtle.forward()
        turtle.select(1)
        turtle.placeDown()
    else
        print("Out of rails!")
        getRails()
    end
sleep(1)
end