SAML Aunthentication

<?php
 
/* Return if the user is already there ($username is already set in this event) */
 
$existingUser = $modx->getObject('modUser', array ('username' => $username));
if ($existingUser) {
   $modx->event->_output = false;
   return;
}
 
/* Generate a random, 50 character password */
$password = "";
for($i=0;$i<50;$i++) {
    $password .= chr( (mt_rand(1, 36) <= 26) ? mt_rand(97, 122) : mt_rand(48, 57 ));
}
 
/* Create the new user */
 
$fields = array(
    'username' => $username,
    'password' => $password,
    'blocked' => '0',
    'email' => '[email protected]',
    'passwordnotifymethod' => 'x',
);
 
$response = $modx->runProcessor('security/user/create', $fields);
 
if ($response->isError()) {
    if ($response->hasFieldErrors()) {
        $fieldErrors = $response->getAllErrors();
        $errorMessage = implode("\n", $fieldErrors);
    } else {
        $errorMessage = $response->getMessage();
    }
    $modx->log(modX::LOG_LEVEL_ERROR, '[OnBeforeManagerLogin] ' . $errorMessage);
    $modx->event->_output = true;
    return;
}
 
$modx->event->_output = false;
return;

/* Create the new user */
  
$fields = array(
    'username' => $username,
    'password' => $password,
    'blocked' => '0',
    'email' => '[email protected]',
    'passwordnotifymethod' => 'x',
);
  
$user = $modx->newObject('modUser');
$user->fromArray($fields);

if (! user->save()) {
   $modx->log(modX::LOG_LEVEL_ERROR, '[OnBeforeManagerLogin] Unable to save user ');
    $modx->event->_output = true;
    return;
}

$modx->event->_output = false;
return;

if (! user->save()) {

if (! $user->save()) {

$authenticated = false;

/* Your authentication code here sets $authenticated to true if the
   user should be allowed to log in */
   
 
$username = $user->get('username');

if(!empty($username)){
   $authenticated = true;
}

$modx->event->_output = (bool) $authenticated;
return true;

$user = $modx->getUser();

$user = $modx->newObject('modUser');

$user = $modx->getUser();