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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/>.
/**
* Lib functions, mostly callbacks.
*
* @package tool_mobile
* @copyright 2017 Juan Leyva
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* Callback to add head elements.
*
* @return str valid html head content
* @since Moodle 3.3
*/
function tool_mobile_before_standard_html_head() {
global $CFG, $PAGE;
$output = '';
// Smart App Banners meta tag is only displayed if mobile services are enabled and configured.
if (!empty($CFG->enablemobilewebservice)) {
$mobilesettings = get_config('tool_mobile');
if (!empty($mobilesettings->enablesmartappbanners)) {
if (!empty($mobilesettings->iosappid)) {
$output .= '<meta name="apple-itunes-app" content="app-id=' . s($mobilesettings->iosappid) . ', ';
$output .= 'app-argument=' . $PAGE->url->out() . '"/>';
}
if (!empty($mobilesettings->androidappid)) {
$mobilemanifesturl = "$CFG->wwwroot/$CFG->admin/tool/mobile/mobile.webmanifest.php";
$output .= '<link rel="manifest" href="'.$mobilemanifesturl.'" />';
}
}
}
return $output;
}
/**
* Generate the app download url to promote moodle mobile.
*
* @return moodle_url|void App download moodle_url object or return if setuplink is not set.
*/
function tool_mobile_create_app_download_url() {
global $CFG;
$mobilesettings = get_config('tool_mobile');
if (empty($mobilesettings->setuplink)) {
return;
}
$downloadurl = new moodle_url($mobilesettings->setuplink);
// Do not update the URL if it is a custom one (we may break it completely).
if ($mobilesettings->setuplink != 'https://download.moodle.org/mobile') {
return $downloadurl;
}
$downloadurl->param('version', $CFG->version);
$downloadurl->param('lang', current_language());
if (!empty($mobilesettings->iosappid)) {
$downloadurl->param('iosappid', $mobilesettings->iosappid);
}
if (!empty($mobilesettings->androidappid)) {
$downloadurl->param('androidappid', $mobilesettings->androidappid);
}
return $downloadurl;
}
/**
* Checks if the given user has a mobile token (has used recently the app).
*
* @param int $userid the user to check
* @return bool true if the user has a token, false otherwise.
*/
function tool_mobile_user_has_token($userid) {
global $DB;
$sql = "SELECT 1
FROM {external_tokens} t, {external_services} s
WHERE t.externalserviceid = s.id
AND s.enabled = 1
AND s.shortname IN ('moodle_mobile_app', 'local_mobile')
AND t.userid = ?";
return $DB->record_exists_sql($sql, [$userid]);
}
/**
* User profile page callback.
*
* Used add a section about the moodle mobile app.
*
* @param \core_user\output\myprofile\tree $tree My profile tree where the setting will be added.
* @param stdClass $user The user object.
* @param bool $iscurrentuser Is this the current user viewing
* @return void Return if the mobile web services setting is disabled or if not the current user.
*/
function tool_mobile_myprofile_navigation(\core_user\output\myprofile\tree $tree, $user, $iscurrentuser) {
global $CFG;
if (empty($CFG->enablemobilewebservice)) {
return;
}
if (!$iscurrentuser) {
return;
}
$newnodes = [];
$mobilesettings = get_config('tool_mobile');
// Check if we should display a QR code.
if (!empty($mobilesettings->qrcodetype)) {
$mobileqr = null;
$qrcodeforappstr = get_string('qrcodeformobileappaccess', 'tool_mobile');
if ($mobilesettings->qrcodetype == tool_mobile\api::QR_CODE_LOGIN && is_https()) {
if (is_siteadmin() || \core\session\manager::is_loggedinas()) {
$mobileqr = get_string('qrsiteadminsnotallowed', 'tool_mobile');
} else {
$qrcodeimg = tool_mobile\api::generate_login_qrcode($mobilesettings);
$minutes = tool_mobile\api::LOGIN_QR_KEY_TTL / MINSECS;
$mobileqr = html_writer::tag('p', get_string('qrcodeformobileapploginabout', 'tool_mobile', $minutes));
$mobileqr .= html_writer::link('#qrcode', get_string('viewqrcode', 'tool_mobile'),
['class' => 'btn btn-primary mt-2', 'data-toggle' => 'collapse',
'role' => 'button', 'aria-expanded' => 'false']);
$mobileqr .= html_writer::div(html_writer::img($qrcodeimg, $qrcodeforappstr), 'collapse mt-4', ['id' => 'qrcode']);
}
} else if ($mobilesettings->qrcodetype == tool_mobile\api::QR_CODE_URL) {
$qrcodeimg = tool_mobile\api::generate_login_qrcode($mobilesettings);
$mobileqr = get_string('qrcodeformobileappurlabout', 'tool_mobile');
$mobileqr .= html_writer::div(html_writer::img($qrcodeimg, $qrcodeforappstr));
}
if ($mobileqr) {
$newnodes[] = new core_user\output\myprofile\node('mobile', 'mobileappqr', $qrcodeforappstr, null, null, $mobileqr);
}
}
// Check if the user is using the app, encouraging him to use it otherwise.
$userhastoken = tool_mobile_user_has_token($user->id);
$mobilestrconnected = null;
if ($userhastoken) {
$mobilestrconnected = get_string('mobileappconnected', 'tool_mobile');
} else if ($url = tool_mobile_create_app_download_url()) {
$mobilestrconnected = get_string('mobileappenabled', 'tool_mobile', $url->out());
}
if ($mobilestrconnected) {
$newnodes[] = new core_user\output\myprofile\node('mobile', 'mobileappnode', $mobilestrconnected, null);
}
// Add nodes, if any.
if (!empty($newnodes)) {
$mobilecat = new core_user\output\myprofile\category('mobile', get_string('mobileapp', 'tool_mobile'), 'loginactivity');
$tree->add_category($mobilecat);
foreach ($newnodes as $node) {
$tree->add_node($node);
}
}
}
/**
* Callback to add footer elements.
*
* @return str valid html footer content
* @since Moodle 3.4
*/
function tool_mobile_standard_footer_html() {
global $CFG;
$output = '';
if (!empty($CFG->enablemobilewebservice) && $url = tool_mobile_create_app_download_url()) {
$output .= html_writer::link($url, get_string('getmoodleonyourmobile', 'tool_mobile'));
}
return $output;
}
/**
* Callback to be able to change a message/notification data per processor.
*
* @param str $procname processor name
* @param stdClass $data message or notification data
*/
function tool_mobile_pre_processor_message_send($procname, $data) {
global $CFG;
if (empty($CFG->enablemobilewebservice)) {
return;
}
if (empty($data->userto)) {
return;
}
// Only hack email.
if ($procname == 'email') {
// Send a message only when there is an HTML version of the email, mobile services are enabled,
// the user receiving the message has not used the app and there is an app download URL set.
if (empty($data->fullmessagehtml)) {
return;
}
if (!$url = tool_mobile_create_app_download_url()) {
return;
}
$userto = is_object($data->userto) ? $data->userto->id : $data->userto;
if (tool_mobile_user_has_token($userto)) {
return;
}
$data->fullmessagehtml .= html_writer::tag('p', get_string('readingthisemailgettheapp', 'tool_mobile', $url->out()));
}
}