<?php
  
  /**
   * ownCloud - Activity app
   *
   * @author Frank Karlitschek
   * @copyright 2013 Frank Karlitschek frank@owncloud.org
   *
   * 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\App::checkAppEnabled('activity');

  $forceUserLogout = false;
  if (!\OCP\User::isLoggedIn()) {
  	if (!isset($_GET['token']) || strlen($_GET['token']) !== 30) {
  		// Token missing or invalid
  		header('HTTP/1.0 404 Not Found');
  		exit;
  	}
  
  	$preferences = new \OC\Preferences(\OC_DB::getConnection());
  	$users = $preferences->getUsersForValue('activity', 'rsstoken', $_GET['token']);

  	if (sizeof($users) !== 1) {
  		// User not found
  		header('HTTP/1.0 404 Not Found');
  		exit;
  	}

  	// Token found login as that user
  	\OC_User::setUserId(array_shift($users));
  	$forceUserLogout = true;
  }
  
  // check if the user has the right permissions.
  \OCP\User::checkLoggedIn();

  // rss is of content type text/xml
  if (isset($_SERVER['HTTP_ACCEPT']) && stristr($_SERVER['HTTP_ACCEPT'], 'application/rss+xml')) {
  	header('Content-Type: application/rss+xml');
  } else {
  	header('Content-Type: text/xml; charset=UTF-8');
  }

  
  // generate and show the rss feed

  $l = \OCP\Util::getL10N('activity');
  $data = new \OCA\Activity\Data(\OC::$server->getActivityManager());
  $groupHelper = new \OCA\Activity\GroupHelper(
  	\OC::$server->getActivityManager(),
  	new \OCA\Activity\DataHelper(
  		\OC::$server->getActivityManager(),
  		new \OCA\Activity\ParameterHelper(new \OC\Files\View(''), $l),
  		$l
  	),
  	false
  );
  
  $tmpl = new \OCP\Template('activity', 'rss');
  
  $tmpl->assign('rssLang', \OC_Preferences::getValue(\OCP\User::getUser(), 'core', 'lang'));
  $tmpl->assign('rssLink', \OCP\Util::linkToAbsolute('activity', 'rss.php'));
  $tmpl->assign('rssPubDate', date('r'));
  $tmpl->assign('user', \OCP\User::getUser());
  
  $tmpl->assign('activities', $data->read($groupHelper, 0, 30, 'all'));
  
  $tmpl->printPage();

  if ($forceUserLogout) {
  	\OCP\User::logout();
  }