moodle-local_mycerts/classes/output/mobile.php
Mark Nelson 08a385fc85 #70 Added mobile app support
This allows students to view the activity and download
their certificate. It also allows teachers to view the
list of issued certificates, with the ability to revoke
any.

This is for Moodle Mobile v3.5.0 (not to be confused with
your Moodle site version) and will not work on Mobile
versions earlier than this.

If you are running a Moodle site on version 3.4 or below
you will need to install the local_mobile plugin in order
for this to work.

If you are running a Moodle site on version 3.0 or below
then you will need to upgrade.
2018-06-06 22:58:47 +08:00

262 lines
10 KiB
PHP

<?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/>.
/**
* Contains the mobile output class for the custom certificate.
*
* @package mod_customcert
* @copyright 2018 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace mod_customcert\output;
defined('MOODLE_INTERNAL') || die();
/**
* Mobile output class for the custom certificate.
*
* @copyright 2018 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class mobile {
/**
* Returns the initial page when viewing the activity for the mobile app.
*
* @param array $args Arguments from tool_mobile_get_content WS
* @return array HTML, javascript and other data
*/
public static function mobile_view_activity($args) {
global $OUTPUT, $DB, $USER;
$args = (object) $args;
// Get the group variable.
$groupid = empty($args->group) ? 0 : $args->group; // By default, group 0.
$cmid = $args->cmid;
// Capabilities check.
$cm = get_coursemodule_from_id('customcert', $cmid);
$context = \context_module::instance($cm->id);
self::require_capability($cm, $context, 'mod/customcert:view');
// Set some variables we are going to be using.
$certificate = $DB->get_record('customcert', ['id' => $cm->instance], '*', MUST_EXIST);
$certificate->name = format_string($certificate->name);
list($certificate->intro, $certificate->introformat) = external_format_text($certificate->intro,
$certificate->introformat, $context->id, 'mod_customcert', 'intro');
// Get the groups (if any) to display - also sets active group.
$groups = self::get_groups($cm, $groupid, $USER->id);
// Get any issues this person may have.
$issues = $DB->get_records('customcert_issues', ['userid' => $USER->id, 'customcertid' => $certificate->id]);
$candownload = true;
if ($certificate->requiredtime && !has_capability('mod/certificate:manage', $context)) {
if (\mod_customcert\certificate::get_course_time($certificate->course) < ($certificate->requiredtime * 60)) {
$candownload = false;
}
}
$fileurl = "";
if ($candownload) {
$fileurl = new \moodle_url('/mod/customcert/mobile/pluginfile.php', ['certificateid' => $certificate->id,
'userid' => $USER->id]);
$fileurl = $fileurl->out(true);
}
$showreport = false;
$numissues = 0;
if (has_capability('mod/customcert:viewreport', $context)) {
// Get the total number of issues.
$showreport = true;
$groupmode = groups_get_activity_groupmode($cm);
if (has_capability('moodle/site:accessallgroups', $context)) {
$groupmode = 'aag';
}
$numissues = \mod_customcert\certificate::get_number_of_issues($certificate->id, $cm, $groupmode);
}
$data = [
'certificate' => $certificate,
'cmid' => $cm->id,
'groupselected' => $groupid,
'showgroups' => !empty($groups),
'groups' => array_values($groups),
'hasissues' => !empty($issues),
'issues' => array_values($issues),
'candownload' => $candownload,
'fileurl' => $fileurl,
'showreport' => $showreport,
'numissuesinreport' => $numissues,
'currenttimestamp' => time()
];
return [
'templates' => [
[
'id' => 'main',
'html' => $OUTPUT->render_from_template('mod_customcert/mobile_view_activity_page', $data),
],
],
'javascript' => '',
'otherdata' => ''
];
}
/**
* Returns the list of issues certificates for the activity for the mobile app.
*
* @param array $args Arguments from tool_mobile_get_content WS
* @return array HTML, javascript and other data
*/
public static function mobile_view_report($args) {
global $DB, $OUTPUT, $USER;
$args = (object) $args;
$cmid = $args->cmid;
$groupid = empty($args->group) ? 0 : $args->group; // By default, group 0.
// Capabilities check.
$cm = get_coursemodule_from_id('customcert', $cmid);
$context = \context_module::instance($cm->id);
self::require_capability($cm, $context, 'mod/customcert:viewreport');
// Get the groups (if any) to display - also sets active group.
$groups = self::get_groups($cm, $groupid, $USER->id);
$certificate = $DB->get_record('customcert', ['id' => $cm->instance], '*', MUST_EXIST);
$certificate->name = format_string($certificate->name);
list($certificate->intro, $certificate->introformat) = external_format_text($certificate->intro,
$certificate->introformat, $context->id, 'mod_customcert', 'intro');
$groupmode = groups_get_activity_groupmode($cm);
if (has_capability('moodle/site:accessallgroups', $context)) {
$groupmode = 'aag';
}
$issues = \mod_customcert\certificate::get_issues($certificate->id, $groupmode, $cm, 0, 0);
foreach ($issues as $issue) {
$issue->displayname = fullname($issue);
$issue->fileurl = new \moodle_url('/mod/customcert/mobile/pluginfile.php', ['certificateid' => $certificate->id,
'userid' => $issue->id]);
}
$data = [
'certificate' => $certificate,
'cmid' => $cmid,
'showgroups' => !empty($groups),
'groups' => array_values($groups),
'canmanage' => has_capability('mod/customcert:manage', $context),
'hasissues' => !empty($issues),
'issues' => array_values($issues),
'currenttimestamp' => time()
];
return [
'templates' => [
[
'id' => 'main',
'html' => $OUTPUT->render_from_template('mod_customcert/mobile_report_page', $data),
],
],
'javascript' => '',
'otherdata' => ''
];
}
/**
* Returns an array of groups to be displayed (if applicable) for the activity.
*
* The groups API is a mess hence the hackiness.
*
* @param \stdClass $cm The course module
* @param int $groupid The group id
* @param int $userid The user id
* @return array The array of groups, may be empty.
*/
protected static function get_groups($cm, $groupid, $userid) {
$arrgroups = [];
if ($groupmode = groups_get_activity_groupmode($cm)) {
if ($groups = groups_get_activity_allowed_groups($cm, $userid)) {
$context = \context_module::instance($cm->id);
if ($groupmode == VISIBLEGROUPS || has_capability('moodle/site:accessallgroups', $context)) {
$allparticipants = new \stdClass();
$allparticipants->id = 0;
$allparticipants->name = get_string('allparticipants');
$allparticipants->selected = $groupid === 0;
$arrgroups[0] = $allparticipants;
}
self::update_active_group($groupmode, $groupid, $groups, $cm);
// Detect which group is selected.
foreach ($groups as $gid => $group) {
$group->selected = $gid == $groupid;
$arrgroups[] = $group;
}
}
}
return $arrgroups;
}
/**
* Update the active group in the session.
*
* This is a hack. We can't call groups_get_activity_group to update the active group as it relies
* on optional_param('group' .. which we won't have when using the mobile app.
*
* @param int $groupmode The group mode we are in, eg. NOGROUPS, VISIBLEGROUPS
* @param int $groupid The id of the group that has been selected
* @param array $allowedgroups The allowed groups this user can access
* @param \stdClass $cm The course module
*/
private static function update_active_group($groupmode, $groupid, $allowedgroups, $cm) {
global $SESSION;
$context = \context_module::instance($cm->id);
if (has_capability('moodle/site:accessallgroups', $context)) {
$groupmode = 'aag';
}
if ($groupid == 0) {
// The groups are only all visible in VISIBLEGROUPS mode or if the user can access all groups.
if ($groupmode == VISIBLEGROUPS || has_capability('moodle/site:accessallgroups', $context)) {
$SESSION->activegroup[$cm->course][$groupmode][$cm->groupingid] = 0;
}
} else {
if ($allowedgroups && array_key_exists($groupid, $allowedgroups)) {
$SESSION->activegroup[$cm->course][$groupmode][$cm->groupingid] = $groupid;
}
}
}
/**
* Confirms the user is logged in and has the specified capability.
*
* @param \stdClass $cm
* @param \context $context
* @param string $cap
*/
protected static function require_capability(\stdClass $cm, \context $context, string $cap) {
require_login($cm->course, false, $cm, true, true);
require_capability($cap, $context);
}
}