startup

old=os.pullEvent
os.pullEvent=os.pullEventRaw
os.loadAPI("walCrypt")
function invalid(txt,st,col)
  term.setCursorPos(1,1)
  term.setTextColor(col)
  term.setBackgroundColor(colors.blue)
  sX,sY=term.getSize()
  for u=1,sX do
    write(" ")
  end
  term.setCursorPos(st,1)
  write(txt)
  sleep(3)
  term.setTextColor(colors.black)
end
function main()
  d=true
  while d do
    term.setBackgroundColor(colors.lightGray)
    term.clear()
    term.setCursorPos(1,1)
    term.setBackgroundColor(colors.blue)
    sX,sY=term.getSize()
    for i=1,sX*2 do
      write(" ")
    end
    term.setCursorPos(19,1)
    term.setTextColor(colors.black)
    print("Please login: ")
    term.setBackgroundColor(colors.lightGray)
    term.setCursorPos(15,9)
    term.setTextColor(colors.blue)
    write("Username: ")
    term.setBackgroundColor(colors.gray)
    write("               ")
    term.setCursorPos(15,11)
    term.setTextColor(colors.blue)
    term.setBackgroundColor(colors.lightGray)
    write("Password: ")
    term.setBackgroundColor(colors.gray)
    write("               ")
    term.setCursorPos(26,9)
    term.setTextColor(colors.cyan)
    inUser = read()
    term.setCursorPos(26,11)
    inPass = read("*")
    if fs.exists("loginSettings/users/"..inUser) then
      a = fs.open("loginSettings/users/"..inUser,"r")
      pass = a.readLine()
      a.close()
      if tonumber(pass) == walCrypt.walCrypter(inPass) then
        d=false
      else
        invalid("Invalid login",19,colors.red)
      end
    else
      invalid("Invalid login",19,colors.red)
    end
  end
  invalid("Valid login",20,colors.green)
  os.pullEvent = old
  term.setBackgroundColor(colors.black)
  term.setTextColor(colors.white)
  term.clear()
  term.setCursorPos(1,1)
  curUser=inUser
  us=fs.open("loginSettings/curUser","w")
  us.writeLine(curUser)
  us.flush()
  us.close()
  shell.run(".shell")
end
main()