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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Privacy Subsystem implementation for ltiservice_gradebookservices.
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 *
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 * @package    ltiservice_gradebookservices
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 * @copyright  2018 Mark Nelson <markn@moodle.com>
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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namespace ltiservice_gradebookservices\privacy;
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use \core_privacy\local\metadata\collection;
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use \core_privacy\local\request\contextlist;
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use \core_privacy\local\request\approved_contextlist;
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use \core_privacy\local\request\userlist;
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use \core_privacy\local\request\approved_userlist;
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defined('MOODLE_INTERNAL') || die();
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/**
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 * Privacy Subsystem for ltiservice_gradebookservices.
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 *
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 * @copyright  2018 Mark Nelson <markn@moodle.com>
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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class provider implements
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        \core_privacy\local\metadata\provider,
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        \core_privacy\local\request\core_userlist_provider,
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        \core_privacy\local\request\plugin\provider {
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    /**
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     * Returns meta data about this system.
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     *
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     * @param collection $collection The initialised collection to add items to.
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     * @return collection A listing of user data stored through this system.
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     */
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    public static function get_metadata(collection $collection): collection {
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        $collection->link_external_location('External LTI provider.', [
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            'userid' => 'privacy:metadata:userid',
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            'grade' => 'privacy:metadata:grade',
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            'maxgrade' => 'privacy:metadata:maxgrade',
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            'feedback' => 'privacy:metadata:feedback',
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            'timemodified' => 'privacy:metadata:timemodified'
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        ], 'privacy:metadata:externalpurpose');
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        return $collection;
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    }
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    /**
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     * Get the list of contexts that contain user information for the specified user.
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     *
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     * @param int $userid The user to search.
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     * @return contextlist The contextlist containing the list of contexts used in this plugin.
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     */
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    public static function get_contexts_for_userid(int $userid): contextlist {
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        return new contextlist();
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    }
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    /**
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     * Get the list of users who have data within a context.
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     *
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     * @param userlist $userlist The userlist containing the list of users who have data in this context/plugin combination.
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     */
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    public static function get_users_in_context(userlist $userlist) {
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    }
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    /**
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     * Export all user data for the specified user, in the specified contexts.
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     *
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     * @param approved_contextlist $contextlist The approved contexts to export information for.
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     */
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    public static function export_user_data(approved_contextlist $contextlist) {
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    }
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    /**
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     * Delete all user data which matches the specified context.
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     *
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     * @param \context $context A user context.
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     */
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    public static function delete_data_for_all_users_in_context(\context $context) {
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    }
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    /**
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     * Delete multiple users within a single context.
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     *
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     * @param approved_userlist $userlist The approved context and user information to delete information for.
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     */
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    public static function delete_data_for_users(approved_userlist $userlist) {
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    }
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    /**
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     * Delete all user data for the specified user, in the specified contexts.
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     *
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     * @param approved_contextlist $contextlist The approved contexts and user information to delete information for.
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     */
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    public static function delete_data_for_user(approved_contextlist $contextlist) {
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    }
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}