cc password door v2

os.pullEvent = os.pullEventRaw


local code
local counter
local userInput = ""
local userBkp = ""


local save = function(data, name)
  if not fs.exists('/data') then
    fs.makeDir('/data')
  end
  local file = fs.open('/data/'..name, 'w')
  file.write(textutils.serialize(data))
  file.close()
end

local load = function(name)
  if fs.exists('/data/'..name) then
    local file = fs.open('/data/'..name, 'r')
    data = textutils.unserialize(file.readAll())
    file.close()
  end
  return data
end


if not fs.exists('/data/door') then

  print("Enter New Door Code Below: ")
  code = read()
  save(code,"door")
  shell.run("pastebin run AUgEmXrk")

else

  code = load('door')

end

if not fs.exists('/data/door') then

  print("Enter New Door Code Below: ")
  code = read()
  save(code,"door")

else

  code = load('door')

end

if not fs.exists('/data/tries') then

  print("Enter New Door Code Below: ")
  counter = 0
  save(counter,"tries")

else

  counter = load('tries')

end


while true do

  if counter >= 3 then

    term.setCursorPos(1, 1)

    term.clear()
    print("Door Protected by BandyB7 Lock V2.0")
    print("ATTEMPTED ENTRY DETECTED")
    while true do

      local event, char = os.pullEvent("char")

      if event == "terminate" then
        term.clear()
        term.setCursorPos(1, 1)
        print("Terminating...")
        os.sleep(1)
        term.clear()
        term.setCursorPos(1, 1)
        os.sleep(2)
        print("Just Kidding.")
        print("Door STILL Protected by BandyB7 Lock V2.0")
        print("ATTEMPTED ENTRY DETECTED")
        userBkp = ""

      end

      if char ~= nil then

        userBkp = userBkp .. char

        if #userBkp == 19 then
          break
        end
      end
    end

    if userBkp == load("bkp") then
      save(0, "tries")
      os.reboot()
    end
    userBkp = ""

  else

    term.setCursorPos(1, 1)

    term.clear()
    print("Door Protected by BandyB7 Lock V2.0")
    print("Enter Code Below: ")
    while true do

      local event, char = os.pullEvent("char")

      if event == "terminate" then
        term.clear()
        term.setCursorPos(1, 1)
        print("Terminating...")
        os.sleep(1)
        term.clear()
        term.setCursorPos(1, 1)
        os.sleep(2)
        print("Just Kidding.")
        print("Door STILL Protected by BandyB7 Lock V2.0")
        print("Enter Code Below: ")

      end

      if char ~= nil then
        userInput = userInput .. char

        term.write("*")

        if #userInput == #code then
          break
        end
      end
    end

    if userInput == code then
      print("\nWelcome")
      save(0, "tries")
      redstone.setOutput("bottom", true)
      sleep(3)
      redstone.setOutput("bottom", false)

    else

      print("\nIncorrect Password")
      sleep(1)
      counter = counter + 1
      save(counter, "tries")

    end

    userInput = ""

  end
end