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<?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/>.
/**
* Mobile output class for bigbluebuttonbn
*
* @package mod_bigbluebuttonbn
* @copyright 2018 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)
*/
namespace mod_bigbluebuttonbn\output;
defined('MOODLE_INTERNAL') || die();
use context_module;
use mod_bigbluebuttonbn\locallib\bigbluebutton;
require_once($CFG->dirroot . '/mod/bigbluebuttonbn/locallib.php');
require_once($CFG->dirroot . '/lib/grouplib.php');
/**
* Mobile output class for bigbluebuttonbn
*
* @package mod_bigbluebuttonbn
* @copyright 2018 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)
*/
class mobile {
/**
* Returns the bigbluebuttonbn course view for the mobile app.
* @param mixed $args
* @return array HTML, javascript and other data.
* @throws \coding_exception
* @throws \moodle_exception
* @throws \require_login_exception
* @throws \required_capability_exception
*/
public static function mobile_course_view($args) {
global $OUTPUT, $SESSION;
$args = (object) $args;
$viewinstance = bigbluebuttonbn_view_validator($args->cmid, null);
$versionname = $args->appversioncode >= 3950 ? 'latest' : 'ionic3';
if (!$viewinstance) {
$error = get_string('view_error_url_missing_parameters', 'bigbluebuttonbn');
return(self::mobile_print_error($error));
}
$bbbsession = bigbluebutton::build_bbb_session_fromviewinstance($viewinstance);
// Create variables for easy access.
$bigbluebuttonbn = $viewinstance['bigbluebuttonbn'];
$serverversion = $bbbsession['serverversion'];
$cm = $bbbsession['cm'];
$course = $bbbsession['course'];
$context = $bbbsession['context'];
// Check activity status.
$activitystatus = \mod_bigbluebuttonbn\locallib\mobileview::get_activity_status($bbbsession);
if ($activitystatus == 'not_started') {
$message = get_string('view_message_conference_not_started', 'bigbluebuttonbn');
$notstarted = array();
$notstarted['starts_at'] = '';
$notstarted['ends_at'] = '';
if (!empty($bigbluebuttonbn->openingtime)) {
$notstarted['starts_at'] = sprintf(
'%s: %s',
get_string('mod_form_field_openingtime', 'bigbluebuttonbn'),
userdate($bigbluebuttonbn->openingtime)
);
}
if (!empty($bigbluebuttonbn->closingtime)) {
$notstarted['ends_at'] = sprintf(
'%s: %s',
get_string('mod_form_field_closingtime', 'bigbluebuttonbn'),
userdate($bigbluebuttonbn->closingtime)
);
}
return(self::mobile_print_notification($bigbluebuttonbn, $cm, $message, $notstarted));
}
if ($activitystatus == 'ended') {
$message = get_string('view_message_conference_has_ended', 'bigbluebuttonbn');
return(self::mobile_print_notification($bigbluebuttonbn, $cm, $message));
}
// Check if the BBB server is working.
if (is_null($serverversion)) {
if ($bbbsession['administrator']) {
$error = get_string('view_error_unable_join', 'bigbluebuttonbn');
} else if ($bbbsession['moderator']) {
$error = get_string('view_error_unable_join_teacher', 'bigbluebuttonbn');
} else {
$error = get_string('view_error_unable_join_student', 'bigbluebuttonbn');
}
return(self::mobile_print_error($error));
}
// Mark viewed by user (if required).
$completion = new \completion_info($course);
$completion->set_module_viewed($cm);
// Validate if the user is in a role allowed to join.
if (!has_capability('moodle/category:manage', $context) &&
!has_capability('mod/bigbluebuttonbn:join', $context)) {
$error = get_string('view_nojoin', 'bigbluebuttonbn');
return(self::mobile_print_error($error));
}
// Initialize session variable used across views.
$SESSION->bigbluebuttonbn_bbbsession = $bbbsession;
// Logic of bbb_view for join to session.
// If user is not administrator nor moderator (user is student) and waiting is required.
if (!$bbbsession['administrator'] && !$bbbsession['moderator'] && $bbbsession['wait']) {
$canjoin = \mod_bigbluebuttonbn\locallib\bigbluebutton::can_join_meeting($args->cmid);
if (!$canjoin['can_join']) {
$message = get_string('view_message_conference_wait_for_moderator', 'bigbluebuttonbn');
return (self::mobile_print_notification($bigbluebuttonbn, $cm, $message));
}
}
// See if the BBB session is already in progress.
if (!bigbluebuttonbn_is_meeting_running($bbbsession['meetingid'])) {
// The meeting doesnt exist in BBB server, must be created.
$response = bigbluebuttonbn_get_create_meeting_array(
\mod_bigbluebuttonbn\locallib\mobileview::create_meeting_data($bbbsession),
\mod_bigbluebuttonbn\locallib\mobileview::create_meeting_metadata($bbbsession),
$bbbsession['presentation']['name'],
$bbbsession['presentation']['url']
);
if (empty($response)) {
// The BBB server is failing.
if ($bbbsession['administrator']) {
$e = get_string('view_error_unable_join', 'bigbluebuttonbn');
} else if ($bbbsession['moderator']) {
$e = get_string('view_error_unable_join_teacher', 'bigbluebuttonbn');
} else {
$e = get_string('view_error_unable_join_student', 'bigbluebuttonbn');
}
return(self::mobile_print_error($e));
}
if ($response['returncode'] == 'FAILED') {
// The meeting could not be created.
$errorkey = bigbluebuttonbn_get_error_key($response['messageKey'], 'view_error_create');
$e = get_string($errorkey, 'bigbluebuttonbn');
return(self::mobile_print_error($e));
}
if ($response['hasBeenForciblyEnded'] == 'true') {
$e = get_string('index_error_forciblyended', 'bigbluebuttonbn');
return(self::mobile_print_error($e));
}
// Event meeting created.
bigbluebuttonbn_event_log(\mod_bigbluebuttonbn\event\events::$events['meeting_create'], $bigbluebuttonbn);
// Insert a record that meeting was created.
$overrides = array('meetingid' => $bbbsession['meetingid']);
$meta = '{"record":'.($bbbsession['record'] ? 'true' : 'false').'}';
bigbluebuttonbn_log($bbbsession['bigbluebuttonbn'], BIGBLUEBUTTONBN_LOG_EVENT_CREATE, $overrides, $meta);
}
// It is part of 'bigbluebuttonbn_bbb_view_join_meeting' in bbb_view.
// Update the cache.
$meetinginfo = bigbluebuttonbn_get_meeting_info($bbbsession['meetingid'], BIGBLUEBUTTONBN_UPDATE_CACHE);
if ($bbbsession['userlimit'] > 0 && intval($meetinginfo['participantCount']) >= $bbbsession['userlimit']) {
// No more users allowed to join.
$message = get_string('view_error_userlimit_reached', 'bigbluebuttonbn');
return(self::mobile_print_notification($bigbluebuttonbn, $cm, $message));
}
// Build final url to BBB.
$bbbsession['createtime'] = $meetinginfo['createTime'];
$urltojoin = \mod_bigbluebuttonbn\locallib\mobileview::build_url_join_session($bbbsession);
// Check groups access and show message.
$msjgroup = array();
$groupmode = groups_get_activity_groupmode($bbbsession['cm']);
if ($groupmode != NOGROUPS) {
$msjgroup = array("message" => get_string('view_mobile_message_groups_not_supported',
'bigbluebuttonbn'));
}
$data = array(
'bigbluebuttonbn' => $bigbluebuttonbn,
'bbbsession' => (object) $bbbsession,
'msjgroup' => $msjgroup,
'urltojoin' => $urltojoin,
'cmid' => $cm->id,
'courseid' => $course->id
);
// We want to show a notification when user excedded 45 seconds without click button.
$jstimecreatedmeeting = 'setTimeout(function(){
document.getElementById("bigbluebuttonbn-mobile-notifications").style.display = "block";
document.getElementById("bigbluebuttonbn-mobile-join").disabled = true;
document.getElementById("bigbluebuttonbn-mobile-meetingready").style.display = "none";
}, 45000);';
return array(
'templates' => array(
array(
'id' => 'main',
'html' => $OUTPUT->render_from_template("mod_bigbluebuttonbn/mobile_view_page_$versionname", $data),
),
),
'javascript' => $jstimecreatedmeeting,
'otherdata' => '',
'files' => ''
);
}
/**
* Returns the view for errors.
* @param string $error Error to display.
*
* @return array HTML, javascript and otherdata
*/
protected static function mobile_print_error($error) {
global $OUTPUT;
$data = array(
'error' => $error
);
return array(
'templates' => array(
array(
'id' => 'main',
'html' => $OUTPUT->render_from_template('mod_bigbluebuttonbn/mobile_view_error', $data),
),
),
'javascript' => '',
'otherdata' => '',
'files' => ''
);
}
/**
* Returns the view for messages.
* @param object $bigbluebuttonbn
* @param stdClass $cm
* @param string $message Message to display.
* @param array $notstarted Extra messages for not started session.
* @return array HTML, javascript and otherdata
*/
protected static function mobile_print_notification($bigbluebuttonbn, $cm, $message, $notstarted = array()) {
global $OUTPUT, $CFG;
$data = array(
'bigbluebuttonbn' => $bigbluebuttonbn,
'cmid' => $cm->id,
'message' => $message,
'not_started' => $notstarted
);
return array(
'templates' => array(
array(
'id' => 'main',
'html' => $OUTPUT->render_from_template('mod_bigbluebuttonbn/mobile_view_notification', $data),
),
),
'javascript' => file_get_contents($CFG->dirroot . '/mod/bigbluebuttonbn/mobile.notification.js'),
'otherdata' => '',
'files' => ''
);
}
}