public function authenticateAsGuest(PhraseaApplication $app, Request $request)
{
if (!$app->isGuestAllowed()) {
$app->abort(403, $app->trans('Phraseanet guest-access is disabled'));
}
$context = new Context(Context::CONTEXT_GUEST);
$app['dispatcher']->dispatch(PhraseaEvents::PRE_AUTHENTICATE, new PreAuthenticate($request, $context));
$user = $app['manipulator.user']->createUser(uniqid('guest'), \random::generatePassword(24));
$invite_user = $app['manipulator.user']->getRepository()->findByLogin(User::USER_GUEST);
$usr_base_ids = array_keys($app['acl']->get($user)->get_granted_base());
$app['acl']->get($user)->revoke_access_from_bases($usr_base_ids);
$invite_base_ids = array_keys($app['acl']->get($invite_user)->get_granted_base());
$app['acl']->get($user)->apply_model($invite_user, $invite_base_ids);
$this->postAuthProcess($app, $user);
$response = $this->generateAuthResponse($app, $app['browser'], $request->request->get('redirect'));
$response->headers->setCookie(new Cookie('invite-usr-id', $user->getId()));
$event = new PostAuthenticate($request, $response, $user, $context);
$app['dispatcher']->dispatch(PhraseaEvents::POST_AUTHENTICATE, $event);
return $response;
}