ComputerCraft Door Security

-- [[ CENTER TEXT ]]
function printcenter(sText)
    local w, h = term.getSize()
    local x, y = term.getCursorPos()
    x = math.max(math.floor((w / 2) - (#sText / 2)), 0)
    term.setCursorPos(x, y)
    print(sText)
end

-- [[ Login Func ]]
function login()
  term.clear()
  term.setCursorPos(1,1)
  printcenter("Please enter your details")
  while true do
    term.setCursorPos(1,3)
    term.clearLine()
    write("Username: ")
    user = read()
    if user == "" then

    elseif user == keyw then
      term.setBackgroundColor(colors.black)
      term.clear()
      term.setCursorPos(1,1)
      error()

    elseif user == username then break

  end
end

  while true do
    term.setCursorPos(1,5)
    term.clearLine()
    write("Password: ")
    pass = read("*")
    if pass == "" then

    elseif pass == keyw then

      term.setBackgroundColor(colors.black)
      term.clear()
      term.setCursorPos(1,1)
      error()
    elseif pass ~= keyw or password then break
    elseif pass == password then break
  end
end
-- [[ Accepting Password, Username ]]
  if user == username and pass == password then
    term.setCursorPos(1,7)
    term.setTextColor(colors.orange)
    printcenter("Access graned.")
    rs.setOutput(side,true)
    sleep(3.5)
    rs.setOutput(side,false)
    os.reboot()
  else
    term.setCursorPos(1,7)
    term.setTextColor(colors.red)
    printcenter("Access denided.")
    printcenter("Please try again.")
    sleep(1.5)
    os.reboot()
  end
end



-- [[ Saving Func ]]
function save(name,input)
  local file = fs.open("security/door/"..name,"w")
  file.writeLine(input)
  file.close()
end

-- [[ Load Func ]]
function load(fileName)
  file = fs.open("security/door/"..fileName,"r")
  local line = file.readLine()
  file.close()
  return line or "none"
end

-- [[ Process func ]]
function process()
  term.setCursorPos(1,13)
  printcenter("Processing your info, please wait.")
  sleep(1.5)
  term.setCursorPos(1,15)
  printcenter("Processing your info, please wait..")
  sleep(1.5)
  term.setCursorPos(1,17)
  printcenter("Done!")
  sleep(1)
  term.clear()
  term.setCursorPos(1,4)
-- [[ Display input ]]
  print("              :------------------------:")
  print("              : Username: "..usern)
  print("              :                        ")
  print("              : Password: "..passw)
  print("              :                        ")
  if keyw == "" then print("              : Code: NONE")
  else print("              : Code: "..keyw)
  end
  print("              :                        ")
  print("              : Side: "..side)
  print("              :------------------------:")
  print("")
  print("              :---------:   :----------:")
  print("              :Try again:   : Continue :")
  print("              :---------:   :----------:")

-- [[ Buttons ]]
  while true do
    event, param, x,y = os.pullEvent("mouse_click")
    if event == "mouse_click" and (x >= 16 and x <= 24) and y == 15 then os.reboot() -- Button 1.
    elseif event == "mouse_click" and (x >= 30 and x <= 39) and y == 15 then -- Button 2.
    fs.makeDir("security/door/")
    save("info",usern) --Username
    save("password",passw) --Password
    save("side",side) --Door Side
    if keyw == "" then
      os.reboot()
    else
      save("keyw",keyw) --OS access code
      os.reboot()
  end
end
end
end

-- [[ Checking for first run ]]
if not term.isColor() then
  print("Program requires an advanced computer.")
  return
end

term.setCursorPos(1,1)
term.clear()
term.setBackgroundColor(colors.blue)
term.setTextColor(colors.white)
term.clear()
if fs.exists("security/door/info") then
else
  term.setCursorPos(1,1)
  printcenter("This is your first run")
  term.setCursorPos(1,2)
  printcenter(" Please make a new account.")
  while true do
    term.setCursorPos(1,4)
    term.clearLine()
    write("Enter your username: ")
    usern = read()
    if usern == "" then

    else
      while true do
        term.setCursorPos(1,6)
        write("Enter your password: ")
        passw = read("*")
        if passw == "" then

        elseif passw == usern then

          term.setCursorPos(1,6)
          print("Password can't be same as username.")
          sleep(1.5)
          term.setCursorPos(1,6)
          term.clearLine()
        else
          term.setCursorPos(1,8)
          write("Debug Password(blank for none): ")
          keyw = read()
          while true do
            term.setCursorPos(1,10)
            print("Please enter door side(right,left,bottom,top)")
            term.setCursorPos(1,11)
            term.clearLine()
            write("Side: ")
            side = read()
            if side == "" then

            elseif side == "right" then process()
            elseif side == "left" then process()
            elseif side == "bottom" then process()
            elseif side == "top" then process()

            end
          end
        end
      end
    end
  end
end

-- [[ Run ]]
os.pullEvent = os.pullEventRaw
if fs.exists("security/door/keyw") then
  keyw = load("keyw")
  username = load("info")
  password = load("password")
  side = load("side")
  login()
else

  username = load("info")
  password = load("password")
  side = load("side")
  login()

end