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<?php
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// This file is part of the Zoom plugin for 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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 * Defines backup_activity_structure_step class.
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 *
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 * @package   mod_zoom
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 * @category  backup
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 * @copyright 2015 UC Regents
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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 mod_zoom;
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use backup;
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use backup_nested_element;
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/**
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 * Define the complete zoom structure for backup, with file and id annotations.
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 */
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class backup_activity_structure_step extends \backup_activity_structure_step {
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    /**
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     * Defines the backup structure of the module.
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     *
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     * @return backup_nested_element
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     */
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    protected function define_structure() {
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        // Define the root element describing the zoom instance.
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        $zoom = new backup_nested_element('zoom', ['id'], [
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            'intro', 'introformat', 'grade', 'grading_method', 'meeting_id', 'join_url', 'created_at', 'host_id', 'name',
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            'start_time', 'timemodified', 'recurring', 'recurrence_type', 'repeat_interval', 'weekly_days', 'monthly_day',
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            'monthly_week', 'monthly_week_day', 'monthly_repeat_option', 'end_times', 'end_date_time', 'end_date_option',
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            'webinar', 'duration', 'timezone', 'password', 'option_jbh', 'option_start_type', 'option_host_video',
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            'option_participants_video', 'option_audio', 'option_mute_upon_entry', 'option_waiting_room',
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            'option_authenticated_users', 'option_encryption_type', 'exists_on_zoom', 'alternative_hosts',
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            'recordings_visible_default', 'show_schedule', 'show_security', 'show_media', 'option_auto_recording',
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            'registration',
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        ]);
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        $trackingfields = new backup_nested_element('trackingfields');
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        $trackingfield = new backup_nested_element('trackingfield', ['id'], ['meeting_id', 'tracking_field', 'value']);
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        // If we had more elements, we would build the tree here.
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        $zoom->add_child($trackingfields);
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        $trackingfields->add_child($trackingfield);
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        // Define data sources.
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        $zoom->set_source_table('zoom', ['id' => backup::VAR_ACTIVITYID]);
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        $trackingfield->set_source_table('zoom_meeting_tracking_fields', ['meeting_id' => backup::VAR_ACTIVITYID]);
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        // If we were referring to other tables, we would annotate the relation
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        // with the element's annotate_ids() method.
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        // Define file annotations.
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        // Intro does not need itemid.
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        $zoom->annotate_files('mod_zoom', 'intro', null);
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        // Return the root element (zoom), wrapped into standard activity structure.
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        return $this->prepare_activity_structure($zoom);
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    }
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}