Password Lock

term.clear()
term.setCursorPos(1, 1)
termX, termY = term.getSize()

if not fs.isDir('.PasswordFiles') then
 if fs.exists('.PasswordFiles') then
  fs.delete('.PasswordFiles')
 end
 fs.makeDir('.PasswordFiles')
end

if not fs.exists(".PasswordFiles/Password") then
 print("Password file not found. Access granted")
else
 passFile = fs.open(".PasswordFiles/Password", "r")
 pass = passFile.readLine()
 passFile.close()

 term.write("You have _ attempts to enter correct password")

 function accessCodeMatch(diskACfile)
  equal = true
  if not fs.exists(".PasswordFiles/AccessCode") then return false
  else
   pcACfile = fs.open(".PasswordFiles/AccessCode", "rb")
   for n = 1, 32 do
    pcByte = pcACfile.read()
    diskByte = diskACfile.read()
    if pcByte ~= diskByte then
     equal = false
     break
    end
   end
   pcACfile.close()
   return equal
  end
 end

 function checkDrive(sSide)
  if sSide == "all" then
   return checkDrive("bottom") or checkDrive("top") or checkDrive("left") or checkDrive("right") or checkDrive("front") or checkDrive("back")
  else if (sSide == "bottom") or (sSide == "top") or (sSide == "left") or (sSide == "right") or (sSide == "front") or (sSide == "back") then
   if disk.isPresent(sSide) then
    if disk.hasData(sSide) then
     if fs.exists(disk.getMountPath(sSide) .. "/AccessCode") then
      accessCodeFile = fs.open(disk.getMountPath(sSide) .. "/AccessCode", "rb")
      if accessCodeMatch(accessCodeFile) then
       accessCodeFile.close()
       return true
      else return false
      end
     end
    end
   end
  end
  end
 end

 function updateFailed(nFailed)
  failedFile = fs.open(".PasswordFiles/Failed", "w")
  failedFile.write(tostring(nFailed))
  failedFile.close()
 end

 function getFailed()
  if not fs.exists(".PasswordFiles/Failed") then return 0
  else
   failedFile = fs.open(".PasswordFiles/Failed", "r")
   if not failedFile then return 0 end
   nFailed = failedFile.readLine()
   nFailed = tonumber(nFailed)
   failedFile.close()
   if nFailed then return nFailed
   else return 0 end
  end
 end

 function checkFailed()
  if failed >= 3 then
   term.setCursorPos(1, 5)
   print("Too many failed attempts. Access Denied")
   print("Insert Access Disk to unlock")
   if checkDrive("all") then return true end
   while true do
    event, side = os.pullEvent("disk")
    if checkDrive(side) then return true end
   end
  end
 end

 failed = getFailed()

 while true do
  term.setCursorPos(10, 1)
  term.write(tostring(3 - failed))
  term.setCursorPos(1, termY)
  term.write("Failed Attempts:")
  for n = 1, 3 do
   if failed > n - 1 then
    term.write(" [X]")
   else
    term.write(" [ ]")
   end
  end
  term.setCursorPos(1, 3)
  term.clearLine()
  term.write("Password: ")
  updateFailed(failed)
  if checkFailed() then break end

  if read() == pass then
   print("Correct Password! Access Granted")
   sleep(1)
   break
  else
   failed = failed + 1
  end
 end
 updateFailed(0)
 term.clear()
 term.setCursorPos(1, 1)
end