<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Privacy Subsystem implementation for qtype_multichoice.
 *
 * @package    qtype_multichoice
 * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace qtype_multichoice\privacy;


> use \core_privacy\local\metadata\collection;
defined('MOODLE_INTERNAL') || die();
> use \core_privacy\local\request\transform;

> use \core_privacy\local\request\user_preference_provider;
/**
> use \core_privacy\local\request\writer;
 * Privacy Subsystem for qtype_multichoice implementing null_provider.
> 



<  * Privacy Subsystem for qtype_multichoice implementing null_provider.



>  * Privacy Subsystem for qtype_multichoice implementing user_preference_provider.


 * @copyright  2018 Andrew Nicols <andrew@nicols.co.uk>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

< class provider implements \core_privacy\local\metadata\null_provider {



> class provider implements
>         // This component has data.
>         // We need to return default options that have been set a user preferences.
>         \core_privacy\local\metadata\provider,
>         \core_privacy\local\request\user_preference_provider
> {
> 
>     /**
>      * Returns meta data about this system.
>      *
>      * @param   collection     $collection The initialised collection to add items to.
>      * @return  collection     A listing of user data stored through this system.
>      */
>     public static function get_metadata(collection $collection) : collection {
>         $collection->add_user_preference('qtype_multichoice_defaultmark', 'privacy:preference:defaultmark');
>         $collection->add_user_preference('qtype_multichoice_penalty', 'privacy:preference:penalty');
>         $collection->add_user_preference('qtype_multichoice_single', 'privacy:preference:single');
>         $collection->add_user_preference('qtype_multichoice_shuffleanswers', 'privacy:preference:shuffleanswers');
>         $collection->add_user_preference('qtype_multichoice_answernumbering', 'privacy:preference:answernumbering');
>         $collection->add_user_preference('qtype_multichoice_showstandardinstruction', 'privacy:preference:showstandardinstruction');
>         return $collection;
>     }



    /**

<      * Get the language string identifier with the component's language
<      * file to explain why this plugin stores no data.



>      * Export all user preferences for the plugin.


     *

<      * @return  string



>      * @param int $userid The userid of the user whose data is to be exported.


     */

<     public static function get_reason() : string {
<         return 'privacy:metadata';



>     public static function export_user_preferences(int $userid) {
>         $preference = get_user_preferences('qtype_multichoice_defaultmark', null, $userid);
>         if (null !== $preference) {
>             $desc = get_string('privacy:preference:defaultmark', 'qtype_multichoice');
>             writer::export_user_preference('qtype_multichoice', 'defaultmark', $preference, $desc);
>         }
> 
>         $preference = get_user_preferences('qtype_multichoice_penalty', null, $userid);
>         if (null !== $preference) {
>             $desc = get_string('privacy:preference:penalty', 'qtype_multichoice');
>             writer::export_user_preference('qtype_multichoice', 'penalty', transform::percentage($preference), $desc);
>         }
> 
>         $preference = get_user_preferences('qtype_multichoice_single', null, $userid);
>         if (null !== $preference) {
>             if ($preference) {
>                 $stringvalue = get_string('answersingleyes', 'qtype_multichoice');
>             } else {
>                 $stringvalue = get_string('answersingleno', 'qtype_multichoice');
>             }
>             $desc = get_string('privacy:preference:single', 'qtype_multichoice');
>             writer::export_user_preference('qtype_multichoice', 'single', $stringvalue, $desc);
>         }
> 
>         $preference = get_user_preferences('qtype_multichoice_answernumbering', null, $userid);
>         if (null !== $preference) {
>             $desc = get_string('privacy:preference:answernumbering', 'qtype_multichoice');
>             writer::export_user_preference('qtype_multichoice', 'answernumbering',
>                     get_string('answernumbering' . $preference, 'qtype_multichoice'), $desc);
>         }
> 
>         $preferences = [
>                 'shuffleanswers',
>                 'showstandardinstruction'
>         ];
>         foreach ($preferences as $key) {
>             $preference = get_user_preferences("qtype_multichoice_{$key}", null, $userid);
>             if (null !== $preference) {
>                 $desc = get_string("privacy:preference:{$key}", 'qtype_multichoice');
>                 writer::export_user_preference('qtype_multichoice', $key, transform::yesno($preference), $desc);
>             }
>         }


    }
}