private boolean checkIfUserExists(String username) {
    // TODO check database
    return true;
}

private boolean loginUser(String username, password) {
    // TODO ask database
    if (password.equals("password") {
        // TODO get user from database currenlty creating one instead
        User user = new User()
        user.username = username
        user.setAdmin(true)  // or false if you want

        // This will log that user in
        getCompany().setCurrentUser(user)
    }

}