Proyectos de Subversion Moodle

<?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 class for requesting user data.

 *

 * @package    assignsubmission_file

 * @copyright  2018 Adrian Greeve <adrian@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

namespace assignsubmission_file\privacy;

defined('MOODLE_INTERNAL') || die();

require_once($CFG->dirroot . '/mod/assign/locallib.php');

use \core_privacy\local\metadata\collection;

use \core_privacy\local\request\writer;

use \core_privacy\local\request\contextlist;

use \mod_assign\privacy\assign_plugin_request_data;

/**

 * Privacy class for requesting user data.

 *

 * @package    assignsubmission_file

 * @copyright  2018 Adrian Greeve <adrian@moodle.com>

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

class provider implements

        \core_privacy\local\metadata\provider,

        \mod_assign\privacy\assignsubmission_provider,

        \mod_assign\privacy\assignsubmission_user_provider {

    /**

     * Return meta data about this plugin.

     *

     * @param  collection $collection A list of information to add to.

     * @return collection Return the collection after adding to it.

     */

    public static function get_metadata(collection $collection): collection {

        $collection->link_subsystem('core_files', 'privacy:metadata:filepurpose');

        return $collection;

    }

    /**

     * This is covered by mod_assign provider and the query on assign_submissions.

     *

     * @param  int $userid The user ID that we are finding contexts for.

     * @param  contextlist $contextlist A context list to add sql and params to for contexts.

     */

    public static function get_context_for_userid_within_submission(int $userid, contextlist $contextlist) {

        // This is already fetched from mod_assign.

    }

    /**

     * This is also covered by the mod_assign provider and it's queries.

     *

     * @param  \mod_assign\privacy\useridlist $useridlist An object for obtaining user IDs of students.

     */

    public static function get_student_user_ids(\mod_assign\privacy\useridlist $useridlist) {

        // No need.

    }

    /**

     * If you have tables that contain userids and you can generate entries in your tables without creating an

     * entry in the assign_submission table then please fill in this method.

     *

     * @param  userlist $userlist The userlist object

     */

    public static function get_userids_from_context(\core_privacy\local\request\userlist $userlist) {

        // Not required.

    }

    /**

     * Export all user data for this plugin.

     *

     * @param  assign_plugin_request_data $exportdata Data used to determine which context and user to export and other useful

     * information to help with exporting.

     */

    public static function export_submission_user_data(assign_plugin_request_data $exportdata) {

        // We currently don't show submissions to teachers when exporting their data.

        $context = $exportdata->get_context();

        if ($exportdata->get_user() != null) {

            return null;

        }

        $user = new \stdClass();

        $assign = $exportdata->get_assign();

        $plugin = $assign->get_plugin_by_type('assignsubmission', 'file');

        $files = $plugin->get_files($exportdata->get_pluginobject(), $user);

        foreach ($files as $file) {

            $userid = $exportdata->get_pluginobject()->userid;

            writer::with_context($exportdata->get_context())->export_file($exportdata->get_subcontext(), $file);

            // Plagiarism data.

            $coursecontext = $context->get_course_context();

            \core_plagiarism\privacy\provider::export_plagiarism_user_data($userid, $context, $exportdata->get_subcontext(), [

                'cmid' => $context->instanceid,

                'course' => $coursecontext->instanceid,

                'userid' => $userid,

                'file' => $file

            ]);

        }

    }

    /**

     * Any call to this method should delete all user data for the context defined in the deletion_criteria.

     *

     * @param  assign_plugin_request_data $requestdata Information useful for deleting user data.

     */

    public static function delete_submission_for_context(assign_plugin_request_data $requestdata) {

        global $DB;

        \core_plagiarism\privacy\provider::delete_plagiarism_for_context($requestdata->get_context());

        $fs = get_file_storage();

        $fs->delete_area_files($requestdata->get_context()->id, 'assignsubmission_file', ASSIGNSUBMISSION_FILE_FILEAREA);

        // Delete records from assignsubmission_file table.

        $DB->delete_records('assignsubmission_file', ['assignment' => $requestdata->get_assign()->get_instance()->id]);

    }

    /**

     * A call to this method should delete user data (where practical) using the userid and submission.

     *

     * @param  assign_plugin_request_data $deletedata Details about the user and context to focus the deletion.

     */

    public static function delete_submission_for_userid(assign_plugin_request_data $deletedata) {

        global $DB;

        \core_plagiarism\privacy\provider::delete_plagiarism_for_user($deletedata->get_user()->id, $deletedata->get_context());

        $submissionid = $deletedata->get_pluginobject()->id;

        $fs = get_file_storage();

        $fs->delete_area_files($deletedata->get_context()->id, 'assignsubmission_file', ASSIGNSUBMISSION_FILE_FILEAREA,

                $submissionid);

        $DB->delete_records('assignsubmission_file', ['assignment' => $deletedata->get_assignid(), 'submission' => $submissionid]);

    }

    /**

     * Deletes all submissions for the submission ids / userids provided in a context.

     * assign_plugin_request_data contains:

     * - context

     * - assign object

     * - submission ids (pluginids)

     * - user ids

     * @param  assign_plugin_request_data $deletedata A class that contains the relevant information required for deletion.

     */

    public static function delete_submissions(assign_plugin_request_data $deletedata) {

        global $DB;

        \core_plagiarism\privacy\provider::delete_plagiarism_for_users($deletedata->get_userids(), $deletedata->get_context());

        if (empty($deletedata->get_submissionids())) {

            return;

        }

        $fs = get_file_storage();

        list($sql, $params) = $DB->get_in_or_equal($deletedata->get_submissionids(), SQL_PARAMS_NAMED);

        $fs->delete_area_files_select($deletedata->get_context()->id, 'assignsubmission_file', ASSIGNSUBMISSION_FILE_FILEAREA,

                $sql, $params);

        $params['assignid'] = $deletedata->get_assignid();

        $DB->delete_records_select('assignsubmission_file', "assignment = :assignid AND submission $sql", $params);

    }

}