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   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * @package    block_rss_client
  19   * @subpackage backup-moodle2
  20   * @copyright 2003 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
  21   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   */
  23  
  24  /**
  25   * Define all the restore steps that wll be used by the restore_rss_client_block_task
  26   */
  27  
  28  /**
  29   * Define the complete rss_client  structure for restore
  30   */
  31  class restore_rss_client_block_structure_step extends restore_structure_step {
  32  
  33      protected function define_structure() {
  34  
  35          $paths = array();
  36  
  37          $paths[] = new restore_path_element('block', '/block', true);
  38          $paths[] = new restore_path_element('rss_client', '/block/rss_client');
  39          $paths[] = new restore_path_element('feed', '/block/rss_client/feeds/feed');
  40  
  41          return $paths;
  42      }
  43  
  44      public function process_block($data) {
  45          global $DB;
  46  
  47          $data = (object)$data;
  48          $feedsarr = array(); // To accumulate feeds
  49  
  50          // For any reason (non multiple, dupe detected...) block not restored, return
  51          if (!$this->task->get_blockid()) {
  52              return;
  53          }
  54  
  55          // Iterate over all the feed elements, creating them if needed
  56          if (isset($data->rss_client['feeds']['feed'])) {
  57              foreach ($data->rss_client['feeds']['feed'] as $feed) {
  58                  $feed = (object)$feed;
  59                  // Look if the same feed is available by url and (shared or userid)
  60                  $select = 'url = :url AND (shared = 1 OR userid = :userid)';
  61                  $params = array('url' => $feed->url, 'userid' => $this->task->get_userid());
  62                  // The feed already exists, use it
  63                  if ($feedid = $DB->get_field_select('block_rss_client', 'id', $select, $params, IGNORE_MULTIPLE)) {
  64                      $feedsarr[] = $feedid;
  65  
  66                  // The feed doesn't exist, create it
  67                  } else {
  68                      $feed->userid = $this->task->get_userid();
  69                      $feedid = $DB->insert_record('block_rss_client', $feed);
  70                      $feedsarr[] = $feedid;
  71                  }
  72              }
  73          }
  74  
  75          // Adjust the serialized configdata->rssid to the created/mapped feeds
  76          // Get the configdata
  77          $configdata = $DB->get_field('block_instances', 'configdata', array('id' => $this->task->get_blockid()));
  78          // Extract configdata
  79          $config = unserialize_object(base64_decode($configdata));
  80          // Set array of used rss feeds
  81          $config->rssid = $feedsarr;
  82          // Serialize back the configdata
  83          $configdata = base64_encode(serialize($config));
  84          // Set the configdata back
  85          $DB->set_field('block_instances', 'configdata', $configdata, array('id' => $this->task->get_blockid()));
  86      }
  87  }