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/>.

/**

 * Library calls for Moodle and BigBlueButton.

 *

 * @package   mod_bigbluebuttonbn

 * @copyright 2010 onwards, Blindside Networks Inc

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

 * @author    Jesus Federico  (jesus [at] blindsidenetworks [dt] com)

 * @author    Fred Dixon  (ffdixon [at] blindsidenetworks [dt] com)

 */

defined('MOODLE_INTERNAL') || die;

use core_calendar\action_factory;

use core_calendar\local\event\entities\action_interface;

use mod_bigbluebuttonbn\completion\custom_completion;

use mod_bigbluebuttonbn\extension;

use mod_bigbluebuttonbn\instance;

use mod_bigbluebuttonbn\local\bigbluebutton;

use mod_bigbluebuttonbn\local\exceptions\server_not_available_exception;

use mod_bigbluebuttonbn\local\helpers\files;

use mod_bigbluebuttonbn\local\helpers\mod_helper;

use mod_bigbluebuttonbn\local\helpers\reset;

use mod_bigbluebuttonbn\local\proxy\bigbluebutton_proxy;

use mod_bigbluebuttonbn\logger;

use mod_bigbluebuttonbn\meeting;

use mod_bigbluebuttonbn\recording;

use mod_bigbluebuttonbn\local\config;

global $CFG;

/**

 * Indicates API features that the bigbluebuttonbn supports.

 *

 * @param string $feature

 * @return mixed True if yes (some features may use other values)

 * @uses FEATURE_IDNUMBER

 * @uses FEATURE_GROUPS

 * @uses FEATURE_GROUPINGS

 * @uses FEATURE_GROUPMEMBERSONLY

 * @uses FEATURE_MOD_INTRO

 * @uses FEATURE_BACKUP_MOODLE2

 * @uses FEATURE_COMPLETION_TRACKS_VIEWS

 * @uses FEATURE_COMPLETION_HAS_RULES

 * @uses FEATURE_GRADE_HAS_GRADE

 * @uses FEATURE_GRADE_OUTCOMES

 * @uses FEATURE_SHOW_DESCRIPTION

 */

function bigbluebuttonbn_supports($feature) {

    if (!$feature) {

        return null;

    }

    $features = [

        FEATURE_IDNUMBER => true,

        FEATURE_GROUPS => true,

        FEATURE_GROUPINGS => true,

        FEATURE_MOD_INTRO => true,

        FEATURE_BACKUP_MOODLE2 => true,

        FEATURE_COMPLETION_TRACKS_VIEWS => true,

        FEATURE_COMPLETION_HAS_RULES => true,

        FEATURE_GRADE_HAS_GRADE => false,

        FEATURE_GRADE_OUTCOMES => false,

        FEATURE_SHOW_DESCRIPTION => true,

        FEATURE_MOD_PURPOSE => MOD_PURPOSE_COMMUNICATION,

    ];

    if (isset($features[(string) $feature])) {

        return $features[$feature];

    }

    return null;

}

/**

 * Given an object containing all the necessary data,

 * (defined by the form in mod_form.php) this function

 * will create a new instance and return the id number

 * of the new instance.

 *

 * @param stdClass $bigbluebuttonbn An object from the form in mod_form.php

 * @return int The id of the newly inserted bigbluebuttonbn record

 */

function bigbluebuttonbn_add_instance($bigbluebuttonbn) {

    global $DB;

    // Excecute preprocess.

    mod_helper::process_pre_save($bigbluebuttonbn);

    // Pre-set initial values.

    $bigbluebuttonbn->presentation = files::save_media_file($bigbluebuttonbn);

    // Encode meetingid.

    $bigbluebuttonbn->meetingid = meeting::get_unique_meetingid_seed();

    [$bigbluebuttonbn->guestlinkuid, $bigbluebuttonbn->guestpassword] =

        \mod_bigbluebuttonbn\plugin::generate_guest_meeting_credentials();

    // Insert a record.

    $bigbluebuttonbn->id = $DB->insert_record('bigbluebuttonbn', $bigbluebuttonbn);

    // Log insert action.

    logger::log_instance_created($bigbluebuttonbn);

    // Complete the process.

    mod_helper::process_post_save($bigbluebuttonbn);

    // Call any active subplugin so to signal a new creation.

    extension::add_instance($bigbluebuttonbn);

    return $bigbluebuttonbn->id;

}

/**

 * Given an object containing all the necessary data,

 * (defined by the form in mod_form.php) this function

 * will update an existing instance with new data.

 *

 * @param stdClass $bigbluebuttonbn An object from the form in mod_form.php

 * @return bool Success/Fail

 */

function bigbluebuttonbn_update_instance($bigbluebuttonbn) {

    global $DB;

    // Excecute preprocess.

    mod_helper::process_pre_save($bigbluebuttonbn);

    // Pre-set initial values.

    $bigbluebuttonbn->id = $bigbluebuttonbn->instance;

    $bigbluebuttonbn->presentation = files::save_media_file($bigbluebuttonbn);

    if (empty($bigbluebuttonbn->guestjoinurl) || empty($bigbluebuttonbn->guestpassword)) {

        [$bigbluebuttonbn->guestlinkuid, $bigbluebuttonbn->guestpassword] =

            \mod_bigbluebuttonbn\plugin::generate_guest_meeting_credentials();

    }

    // Update a record.

    $DB->update_record('bigbluebuttonbn', $bigbluebuttonbn);

    // Get the meetingid column in the bigbluebuttonbn table.

    $bigbluebuttonbn->meetingid = (string) $DB->get_field('bigbluebuttonbn', 'meetingid', ['id' => $bigbluebuttonbn->id]);

    // Log update action.

    logger::log_instance_updated(instance::get_from_instanceid($bigbluebuttonbn->id));

    // Complete the process.

    mod_helper::process_post_save($bigbluebuttonbn);

    // Call any active subplugin so to signal update.

    extension::update_instance($bigbluebuttonbn);

    return true;

}

/**

 * Given an ID of an instance of this module,

 * this function will permanently delete the instance

 * and any data that depends on it.

 *

 * @param int $id Id of the module instance

 *

 * @return bool Success/Failure

 */

function bigbluebuttonbn_delete_instance($id) {

    global $DB;

    $instance = instance::get_from_instanceid($id);

    if (empty($instance)) {

        return false;

    }

    // End all meeting if any still running.

    try {

        $meeting = new meeting($instance);

        $meeting->end_meeting();

    } catch (moodle_exception $e) {

        // Do not log any issue when testing.

        if (!(defined('PHPUNIT_TEST') && PHPUNIT_TEST) && !defined('BEHAT_SITE_RUNNING')) {

            debugging($e->getMessage(), DEBUG_DEVELOPER, $e->getTrace());

        }

    }

    // Get all possible groups (course and course module).

    $groupids = [];

    if (groups_get_activity_groupmode($instance->get_cm())) {

        $coursegroups = groups_get_activity_allowed_groups($instance->get_cm());

        $groupids = array_map(

            function($gp) {

                return $gp->id;

            },

            $coursegroups);

    }

    // End all meetings for all groups.

    foreach ($groupids as $groupid) {

        try {

            $instance->set_group_id($groupid);

            $meeting = new meeting($instance);

            $meeting->end_meeting();

        } catch (moodle_exception $e) {

            debugging($e->getMessage() . ' for group ' . $groupid, DEBUG_NORMAL, $e->getTrace());

        }

    }

    $result = true;

    // Call any active subplugin so to signal deletion.

    extension::delete_instance($id);

    // Delete the instance.

    if (!$DB->delete_records('bigbluebuttonbn', ['id' => $id])) {

        $result = false;

    }

    // Delete dependant events.

    if (!$DB->delete_records('event', ['modulename' => 'bigbluebuttonbn', 'instance' => $id])) {

        $result = false;

    }

    // Log action performed.

    logger::log_instance_deleted($instance);

    // Mark dependent recordings as headless.

    foreach (recording::get_records(['bigbluebuttonbnid' => $id]) as $recording) {

        $recording->set('headless', recording::RECORDING_HEADLESS);

        $recording->update();

    }

    return $result;

}

/**

 * Return a small object with summary information about what a

 * user has done with a given particular instance of this module

 * Used for user activity reports.

 *

 * @param stdClass $course

 * @param stdClass $user

 * @param cm_info $mod

 * @param stdClass $bigbluebuttonbn

 *

 * @return stdClass with info and time (timestamp of the last log)

 */

function bigbluebuttonbn_user_outline(stdClass $course, stdClass $user, cm_info $mod, stdClass $bigbluebuttonbn): stdClass {

    [$infos, $logtimestamps] = \mod_bigbluebuttonbn\local\helpers\user_info::get_user_info_outline($course, $user, $mod);

    return (object) [

        'info' => join(',', $infos),

        'time' => !empty($logtimestamps) ? max($logtimestamps) : 0

    ];

}

/**

 * Print a detailed representation of what a user has done with

 * a given particular instance of this module, for user activity reports.

 *

 * @param stdClass $course

 * @param stdClass $user

 * @param cm_info $mod

 * @param stdClass $bigbluebuttonbn

 *

 */

function bigbluebuttonbn_user_complete(stdClass $course, stdClass $user, cm_info $mod, stdClass $bigbluebuttonbn) {

    [$infos] = \mod_bigbluebuttonbn\local\helpers\user_info::get_user_info_outline($course, $user, $mod);

    echo join(', ', $infos);

}

/**

 * This flags this module with the capability to override the completion status with the custom completion rules.

 *

 *

 * @return int

 */

function bigbluebuttonbn_get_completion_aggregation_state() {

    return COMPLETION_CUSTOM_MODULE_FLOW;

}

/**

 * Returns all other caps used in module.

 *

 * @return string[]

 */

function bigbluebuttonbn_get_extra_capabilities() {

    return ['moodle/site:accessallgroups'];

}

/**

 * Called by course/reset.php

 *

 * @param MoodleQuickForm $mform

 */

function bigbluebuttonbn_reset_course_form_definition(&$mform) {

    $items = reset::reset_course_items();

    $mform->addElement('header', 'bigbluebuttonbnheader', get_string('modulenameplural', 'bigbluebuttonbn'));

    foreach ($items as $item => $default) {

        $mform->addElement(

            'advcheckbox',

            "reset_bigbluebuttonbn_{$item}",

            get_string("reset{$item}", 'bigbluebuttonbn')

        );

        if ($item == 'logs' || $item == 'recordings') {

            $mform->addHelpButton("reset_bigbluebuttonbn_{$item}", "reset{$item}", 'bigbluebuttonbn');

        }

    }

}

/**

 * Course reset form defaults.

 *

 * @param stdClass $course

 * @return array

 */

function bigbluebuttonbn_reset_course_form_defaults(stdClass $course) {

    $formdefaults = [];

    $items = reset::reset_course_items();

    // All unchecked by default.

    foreach ($items as $item => $default) {

        $formdefaults["reset_bigbluebuttonbn_{$item}"] = $default;

    }

    return $formdefaults;

}

/**

 * This function is used by the reset_course_userdata function in moodlelib.

 *

 * @param stdClass $data the data submitted from the reset course.

 * @return array status array

 */

function bigbluebuttonbn_reset_userdata(stdClass $data) {

    $items = reset::reset_course_items();

    $status = [];

    // Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.

    // See MDL-9367.

    if (array_key_exists('recordings', $items) && !empty($data->reset_bigbluebuttonbn_recordings)) {

        // Remove all the recordings from a BBB server that are linked to the room/activities in this course.

        reset::reset_recordings($data->courseid);

        unset($items['recordings']);

        $status[] = reset::reset_getstatus('recordings');

    }

    if (!empty($data->reset_bigbluebuttonbn_tags)) {

        // Remove all the tags linked to the room/activities in this course.

        reset::reset_tags($data->courseid);

        unset($items['tags']);

        $status[] = reset::reset_getstatus('tags');

    }

    if (!empty($data->reset_bigbluebuttonbn_logs)) {

        // Remove all the tags linked to the room/activities in this course.

        reset::reset_logs($data->courseid);

        unset($items['logs']);

        $status[] = reset::reset_getstatus('logs');

    }

    return $status;

}

/**

 * Given a course_module object, this function returns any

 * "extra" information that may be needed when printing

 * this activity in a course listing.

 * See get_array_of_activities() in course/lib.php.

 *

 * @param stdClass $coursemodule

 *

 * @return null|cached_cm_info

 */

function bigbluebuttonbn_get_coursemodule_info($coursemodule) {

    $instance = instance::get_from_instanceid($coursemodule->instance);

    if (empty($instance)) {

        return null;

    }

    $info = new cached_cm_info();

    // Warning here: if any of the instance method calls ::get_cm this will result is a recursive call.

    // So best is just to access instance variables not linked to the cm.

    $info->name = $instance->get_instance_var('name');

    if ($coursemodule->showdescription) {

        // Convert intro to html. Do not filter cached version, filters run at display time.

        $info->content = format_module_intro('bigbluebuttonbn', $instance->get_instance_data(), $coursemodule->id, false);

    }

    $customcompletionfields = custom_completion::get_defined_custom_rules();

    // Populate the custom completion rules as key => value pairs, but only if the completion mode is 'automatic'.

    if ($coursemodule->completion == COMPLETION_TRACKING_AUTOMATIC) {

        foreach ($customcompletionfields as $completiontype) {

            $info->customdata['customcompletionrules'][$completiontype] =

                $instance->get_instance_var($completiontype) ?? 0;

        }

    }

    return $info;

}

/**

 * Serves the bigbluebuttonbn attachments. Implements needed access control ;-).

 *

 * @param stdClass $course course object

 * @param stdClass $cm course module object

 * @param context $context context object

 * @param string $filearea file area

 * @param array $args extra arguments

 * @param bool $forcedownload whether or not force download

 * @param array $options additional options affecting the file serving

 *

 * @return false|null false if file not found, does not return if found - justsend the file

 * @category files

 *

 */

function bigbluebuttonbn_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options = []) {

    if (!files::pluginfile_valid($context, $filearea)) {

        return false;

    }

    $file = files::pluginfile_file($course, $cm, $context, $filearea, $args);

    if (empty($file)) {

        return false;

    }

    // Finally send the file.

    return send_stored_file($file, 0, 0, $forcedownload, $options); // Download MUST be forced - security!

}

/**

 * Mark the activity completed (if required) and trigger the course_module_viewed event.

 *

 * @param stdClass $bigbluebuttonbn bigbluebuttonbn object

 * @param stdClass $course course object

 * @param cm_info $cm course module object

 * @param context $context context object

 * @since Moodle 3.0

 */

function bigbluebuttonbn_view($bigbluebuttonbn, $course, $cm, $context) {

    // Trigger course_module_viewed event.

    $params = [

        'context' => $context,

        'objectid' => $bigbluebuttonbn->id

    ];

    $event = \mod_bigbluebuttonbn\event\course_module_viewed::create($params); // Fix event name.

    $cmrecord = $cm->get_course_module_record();

    $event->add_record_snapshot('course_modules', $cmrecord);

    $event->add_record_snapshot('course', $course);

    $event->add_record_snapshot('bigbluebuttonbn', $bigbluebuttonbn);

    $event->trigger();

    // Completion.

    $completion = new completion_info($course);

    $completion->set_module_viewed($cm);

}

/**

 * Check if the module has any update that affects the current user since a given time.

 *

 * @param cm_info $cm course module data

 * @param int $from the time to check updates from

 * @param array $filter if we need to check only specific updates

 * @return stdClass an object with the different type of areas indicating if they were updated or not

 * @since Moodle 3.2

 */

function bigbluebuttonbn_check_updates_since(cm_info $cm, $from, $filter = []) {

    $updates = course_check_module_updates_since($cm, $from, ['content'], $filter);

    return $updates;

}

/**

 * This function receives a calendar event and returns the action associated with it, or null if there is none.

 *

 * This is used by block_myoverview in order to display the event appropriately. If null is returned then the event

 * is not displayed on the block.

 *

 * @param calendar_event $event

 * @param action_factory $factory

 * @return action_interface|null

 */

function mod_bigbluebuttonbn_core_calendar_provide_event_action(

    calendar_event $event,

    action_factory $factory

) {

    global $DB;

    $time = time();

    // Get mod info.

    $cm = get_fast_modinfo($event->courseid)->instances['bigbluebuttonbn'][$event->instance];

    // Get bigbluebuttonbn activity.

    $bigbluebuttonbn = $DB->get_record('bigbluebuttonbn', ['id' => $event->instance], '*', MUST_EXIST);

    // Set flag haspassed if closingtime has already passed only if it is defined.

    $haspassed = ($bigbluebuttonbn->closingtime) && $bigbluebuttonbn->closingtime < $time;

    // Set flag hasstarted if startingtime has already passed or not defined.

    $hasstarted = $bigbluebuttonbn->openingtime < $time;

    // Return null if it has passed or not started.

    if ($haspassed || !$hasstarted) {

        return null;

    }

    // Get if the user has joined in live session or viewed the recorded.

    $customcompletion = new custom_completion($cm, $event->userid);

    $usercomplete = $customcompletion->get_overall_completion_state();

    $instance = instance::get_from_instanceid($bigbluebuttonbn->id);

    // Get if the room is available.

    $roomavailable = $instance->is_currently_open();

    $meetinginfo = null;

    // Check first if the server can be contacted.

    try {

        if (empty(bigbluebutton_proxy::get_server_version())) {

            // In this case we should already have debugging message printed.

            return null;

        }

        // Get if the user can join.

        $meetinginfo = meeting::get_meeting_info_for_instance($instance);

    } catch (moodle_exception $e) {

        debugging('Error - Cannot retrieve info from meeting ('.$instance->get_meeting_id().') ' . $e->getMessage());

        return null;

    }

    $usercanjoin = $meetinginfo->canjoin;

    // Check if the room is closed and the user has already joined this session or played the record.

    if (!$roomavailable && $usercomplete) {

        return null;

    }

    // Check if the user can join this session.

    $actionable = ($roomavailable && $usercanjoin);

    // Action data.

    $string = get_string('view_room', 'bigbluebuttonbn');

    $url = new moodle_url('/mod/bigbluebuttonbn/view.php', ['id' => $cm->id]);

    if (groups_get_activity_groupmode($cm) == NOGROUPS) {

        // No groups mode.

        $string = get_string('view_conference_action_join', 'bigbluebuttonbn');

        $url = new moodle_url('/mod/bigbluebuttonbn/bbb_view.php', [

                'action' => 'join',

                'id' => $cm->id,

                'bn' => $bigbluebuttonbn->id,

                'timeline' => 1]

        );

    }

    return $factory->create_instance($string, $url, 1, $actionable);

}

/**

 * Is the event visible?

 *

 * @param calendar_event $event

 * @return bool Returns true if the event is visible to the current user, false otherwise.

 */

function mod_bigbluebuttonbn_core_calendar_is_event_visible(calendar_event $event) {

    $instance = instance::get_from_instanceid($event->instance);

    if (!$instance) {

        return false;

    }

    $activitystatus = mod_bigbluebuttonbn\local\proxy\bigbluebutton_proxy::view_get_activity_status($instance);

    return $activitystatus != 'ended';

}

/**

 * Adds module specific settings to the settings block

 *

 * @param settings_navigation $settingsnav The settings navigation object

 * @param navigation_node $nodenav The node to add module settings to

 */

function bigbluebuttonbn_extend_settings_navigation(settings_navigation $settingsnav, navigation_node $nodenav) {

    global $USER;

    // Don't add validate completion if the callback for meetingevents is NOT enabled.

    if (!(boolean) \mod_bigbluebuttonbn\local\config::get('meetingevents_enabled')) {

        return;

    }

    // Don't add validate completion if user is not allowed to edit the activity.

    $context = context_module::instance($settingsnav->get_page()->cm->id);

    if (!has_capability('moodle/course:manageactivities', $context, $USER->id)) {

        return;

    }

    $completionvalidate = '#action=completion_validate&bigbluebuttonbn=' . $settingsnav->get_page()->cm->instance;

    $nodenav->add(get_string('completionvalidatestate', 'bigbluebuttonbn'),

        $completionvalidate, navigation_node::TYPE_CONTAINER);

}

/**

 * In place editable for the recording table

 *

 * @param string $itemtype

 * @param string $itemid

 * @param mixed $newvalue

 * @return mixed|null

 */

function bigbluebuttonbn_inplace_editable($itemtype, $itemid, $newvalue) {

    $editableclass = "\\mod_bigbluebuttonbn\\output\\recording_{$itemtype}_editable";

    if (class_exists($editableclass)) {

        return call_user_func([$editableclass, 'update'], $itemid, $newvalue);

    }

    return null; // Will raise an exception in core update_inplace_editable method.

}

/**

 * Returns all events since a given time in specified bigbluebutton activity.

 * We focus here on the two events: play and join.

 *

 * @param array $activities

 * @param int $index

 * @param int $timestart

 * @param int $courseid

 * @param int $cmid

 * @param int $userid

 * @param int $groupid

 * @return array

 */

function bigbluebuttonbn_get_recent_mod_activity(&$activities, &$index, $timestart, $courseid, $cmid, $userid = 0,

    $groupid = 0): array {

    $instance = instance::get_from_cmid($cmid);

    $instance->set_group_id($groupid);

    $cm = $instance->get_cm();

    $logs =

        logger::get_user_completion_logs_with_userfields($instance,

            $userid ?? null,

            [logger::EVENT_JOIN, logger::EVENT_PLAYED],

            $timestart);

    foreach ($logs as $log) {

        $activity = new stdClass();

        $activity->type = 'bigbluebuttonbn';

        $activity->cmid = $cm->id;

        $activity->name = format_string($instance->get_meeting_name(), true);

        $activity->sectionnum = $cm->sectionnum;

        $activity->timestamp = $log->timecreated;

        $activity->user = new stdClass();

        $userfields = explode(',', implode(',', \core_user\fields::get_picture_fields()));

        foreach ($userfields as $userfield) {

            if ($userfield == 'id') {

                // Aliased in SQL above.

                $activity->user->{$userfield} = $log->userid;

            } else {

                $activity->user->{$userfield} = $log->{$userfield};

            }

        }

        $activity->user->fullname = fullname($log);

        $activity->content = '';

        $activity->eventname = logger::get_printable_event_name($log);

        if ($log->log == logger::EVENT_PLAYED) {

            if (!empty($log->meta)) {

                $meta = json_decode($log->meta);

                if (!empty($meta->recordingid)) {

                    $recording = recording::get_record(['id' => $meta->recordingid]);

                    if ($recording) {

                        $activity->content = $recording->get('name');

                    }

                }

            }

        }

        $activities[$index++] = $activity;

    }

    return $activities;

}

/**

 * Outputs the bigbluebutton logs indicated by $activity.

 *

 * @param stdClass $activity the activity object the bigbluebuttonbn resides in

 * @param int $courseid the id of the course the bigbluebuttonbn resides in

 * @param bool $detail not used, but required for compatibilty with other modules

 * @param array $modnames not used, but required for compatibilty with other modules

 * @param bool $viewfullnames not used, but required for compatibilty with other modules

 */

function bigbluebuttonbn_print_recent_mod_activity(stdClass $activity, int $courseid, bool $detail, array $modnames,

    bool $viewfullnames) {

    global $OUTPUT;

    $modinfo = [];

    $userpicture = $OUTPUT->user_picture($activity->user);

    $template = ['userpicture' => $userpicture,

        'submissiontimestamp' => $activity->timestamp,

        'modinfo' => $modinfo,

        'userurl' => new moodle_url('/user/view.php', array('id' => $activity->user->id, 'course' => $courseid)),

        'fullname' => $activity->user->fullname];

    if (isset($activity->eventname)) {

        $template['eventname'] = $activity->eventname;

    }

    echo $OUTPUT->render_from_template('mod_bigbluebuttonbn/recentactivity', $template);

}

/**

 * Given a course and a date, prints a summary of all the activity for this module

 *

 * @param object $course

 * @param bool $viewfullnames capability

 * @param int $timestart

 * @return bool success

 */

function bigbluebuttonbn_print_recent_activity(object $course, bool $viewfullnames, int $timestart): bool {

    global $OUTPUT;

    $modinfo = get_fast_modinfo($course);

    if (empty($modinfo->instances['bigbluebuttonbn'])) {

        return true;

    }

    $out = '';

    foreach ($modinfo->instances['bigbluebuttonbn'] as $cm) {

        if (!$cm->uservisible) {

            continue;

        }

        $instance = instance::get_from_cmid($cm->id);

        $logs = logger::get_user_completion_logs_with_userfields($instance,

            null,

            [logger::EVENT_JOIN, logger::EVENT_PLAYED],

            $timestart);

        if ($logs) {

            echo $OUTPUT->heading(get_string('new_bigblubuttonbn_activities', 'bigbluebuttonbn') . ':', 6);

            foreach ($logs as $log) {

                $activityurl = new moodle_url('/mod/bigbluebuttonbn/index.php', ['id' => $course->id]);

                print_recent_activity_note($log->timecreated,

                    $log,

                    logger::get_printable_event_name($log) . ' - ' . $instance->get_meeting_name(),

                    $activityurl->out(),

                    false,

                    $viewfullnames);

            }

        }

        echo $out;

    }

    return true;

}

/**

 * Creates a number of BigblueButtonBN activities.

 *

 * @param tool_generator_course_backend $backend

 * @param testing_data_generator $generator

 * @param int $courseid

 * @param int $number

 * @return void

 */

function bigbluebuttonbn_course_backend_generator_create_activity(tool_generator_course_backend $backend,

    testing_data_generator $generator,

    int $courseid,

    int $number

) {

    // Set up generator.

    $bbbgenerator = $generator->get_plugin_generator('mod_bigbluebuttonbn');

    // Create assignments.

    $backend->log('createbigbluebuttonbn', $number, true, 'mod_bigbluebuttonbn');

    for ($i = 0; $i < $number; $i++) {

        $record = array('course' => $courseid);

        $options = array('section' => $backend->get_target_section());

        $bbbgenerator->create_instance($record, $options);

        $backend->dot($i, $number);

    }

    $backend->end_log();

}

/**

 * Whether the activity is branded.

 * This information is used, for instance, to decide if a filter should be applied to the icon or not.

 *

 * @return bool True if the activity is branded, false otherwise.

 */

function bigbluebuttonbn_is_branded(): bool {

    return true;

}