<?php
  
  /**
  * ownCloud - Activity App
  *
  * @author Joas Schilling
  * @copyright 2014 Joas Schilling nickvergessen@owncloud.com
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
  * License as published by the Free Software Foundation; either
  * version 3 of the License, or any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
  *
  * You should have received a copy of the GNU Affero General Public
  * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
  
  \OCP\JSON::checkLoggedIn();
  \OCP\JSON::checkAppEnabled('activity');
  \OCP\JSON::callCheck();
  
  $l = \OCP\Util::getL10N('activity');
  
  $token = $tokenUrl = '';
  if ($_POST['enable'] === 'true') {
  	// Check for collisions
  	$token = \OCP\Util::generateRandomBytes();
  	$preferences = new \OC\Preferences(\OC_DB::getConnection());
  	$conflicts = $preferences->getUsersForValue('activity', 'rsstoken', $token);
  
  	while (!empty($conflicts)) {
  		$token = \OCP\Util::generateRandomBytes();
  		$conflicts = $preferences->getUsersForValue('activity', 'rsstoken', $token);
  	}
  	$tokenUrl = \OCP\Util::linkToAbsolute('activity', 'rss.php', array('token' => $token));
  }
  
  \OCP\Config::setUserValue(\OCP\User::getUser(), 'activity', 'rsstoken', $token);
  
  \OCP\JSON::success(array('data' => array(
  	'message' => $l->t('Your settings have been updated.'),
  	'rsslink' => $tokenUrl,
  )));