loggedin = false;
local user = "null";
users = {["werty"] = "Werty", ["human"] = "hi"};

term.setTextColor(colors.green);
textutils.slowPrint("Welcome to Human-OS");
textutils.slowPrint("");
textutils.slowPrint("       _    _    ____   _____
textutils.slowPrint("     / /  / /   / __ \ / ____|
textutils.slowPrint("    / /__/ /   | |  | | (___
textutils.slowPrint("   /  __  /    | |  | |\___ \
textutils.slowPrint("  / /  / /     | |__| |____) |
textutils.slowPrint(" /_/  /_/       \____/|_____/
textutils.slowPrint("
textutils.slowPrint("
textutils.slowPrint("
term.setTextColor(colors.orange);

term.setTextColor(colors.green);

textutils.slowPrint("Login:");
term.setTextColor(colors.blue);
textutils.slowPrint("  Username:");
term.setTextColor(colors.red);
local username = read();
term.setTextColor(colors.blue);
textutils.slowPrint("  Password:");
term.setTextColor(colors.red);
local password = read("*");

function check(u, p)

  if users[u] == p then
   loggedin = true;
   user = u;
   return true;
  end
end

if check(username, password) then
  term.setTextColor(colors.green);
  term.clear();
  textutils.slowPrint("Welcome back " .. user);
  os.sleep(3);
  term.clear();
  term.setCursorPos(1, 1);
else
  term.clear();
  term.setCursorPos(1, 1);
  term.setTextColor(colors.red);
  textutils.slowPrint("Login information was incorrect!");
  shell.run("startup");
end