os.pullEvent = os.pullEventRaw
username = "koda"
password = "123456"
attempt = 0

function attemptCheck()
  if attempt > 3 then
   term.clear()
   term.setCursorPos(1,1)
   textutils.slowPrint ("Attempt limit reached.")
   sleep(1)
   textutils.slowPrint ("Shutting down...")
   sleep(1)
   os.reboot()
  end
end


function login()
  attemptCheck()
  print ("Login attempt: ", attempt)
  write "Username: "
  input = read()
  if input == username then
    write "Password: "
    input = read("*")
    if input == password then
      textutils.slowPrint ("Welcome to your computer, ".. username ..".")
      sleep(2)
      term.clear()
      term.setCursorPos(1,1)
    else
      textutils.slowPrint ("The password was incorrect.")
      sleep(1)
      textutils.slowPrint ("Please attempt again.")
      attempt = attempt + 1
      sleep(1)
      term.clear()
      term.setCursorPos(1,1)
      login()
    end
  else
    textutils.slowPrint ("The username was not recognized.")
    sleep(1)
    textutils.slowPrint ("Please attempt again.")
    attempt = attempt + 1
    sleep(1)
    term.clear()
    term.setCursorPos(1,1)
    login()
  end
end


login()