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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   * Privacy Subsystem implementation for scormreport_objectives.
  19   *
  20   * @package    scormreport_objectives
  21   * @copyright  2018 Sara Arjona <sara@moodle.com>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace scormreport_objectives\privacy;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  use \core_privacy\local\metadata\collection;
  30  use \core_privacy\local\request\transform;
  31  use \core_privacy\local\request\writer;
  32  
  33  /**
  34   * Privacy Subsystem for scormreport_objectives.
  35   *
  36   * @copyright  2018 Sara Arjona <sara@moodle.com>
  37   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   */
  39  class provider implements
  40      \core_privacy\local\metadata\provider,
  41      \core_privacy\local\request\user_preference_provider {
  42  
  43      /**
  44       * Returns meta data about this system.
  45       *
  46       * @param  collection $collection The initialised item collection to add items to.
  47       * @return collection A listing of user data stored through this system.
  48       */
  49      public static function get_metadata(collection $collection) : collection {
  50          // User preferences shared between different scorm reports.
  51          $collection->add_user_preference('scorm_report_pagesize', 'privacy:metadata:preference:scorm_report_pagesize');
  52  
  53          // User preferences specific for this scorm report.
  54          $collection->add_user_preference(
  55              'scorm_report_objectives_score',
  56              'privacy:metadata:preference:scorm_report_objectives_score'
  57          );
  58  
  59          return $collection;
  60      }
  61  
  62      /**
  63       * Store all user preferences for the plugin.
  64       *
  65       * @param  int $userid The userid of the user whose data is to be exported.
  66       */
  67      public static function export_user_preferences(int $userid) {
  68          static::get_and_export_user_preference($userid, 'scorm_report_pagesize');
  69          static::get_and_export_user_preference($userid, 'scorm_report_objectives_score', true);
  70      }
  71  
  72      /**
  73       * Get and export a user preference.
  74       *
  75       * @param  int     $userid The userid of the user whose data is to be exported.
  76       * @param  string  $userpreference The user preference to export.
  77       * @param  boolean $transform If true, transform value to yesno.
  78       */
  79      protected static function get_and_export_user_preference(int $userid, string $userpreference, $transform = false) {
  80          $prefvalue = get_user_preferences($userpreference, null, $userid);
  81          if ($prefvalue !== null) {
  82              if ($transform) {
  83                  $transformedvalue = transform::yesno($prefvalue);
  84              } else {
  85                  $transformedvalue = $prefvalue;
  86              }
  87              writer::export_user_preference(
  88                  'scormreport_objectives',
  89                  $userpreference,
  90                  $transformedvalue,
  91                  get_string('privacy:metadata:preference:'.$userpreference, 'scormreport_objectives')
  92              );
  93          }
  94      }
  95  }