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lib.php
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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/>.
/**
* Allows course enrolment via a simple text code.
*
* @package enrol_easy
* @copyright 2017 Dearborn Public Schools
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class enrol_easy_plugin extends enrol_plugin {
public function get_form() {
global $CFG, $OUTPUT, $USER;
if (!enrol_is_enabled('easy') || !isloggedin()) {
return '';
}
require_once(dirname(__FILE__) . '/locallib.php');
$enrol_easy_qr = new moodle_url('/enrol/easy/qr.php');
$enrol_easy_qr = str_replace("http://", "https://", $enrol_easy_qr);
$data = array(
'internal' => array(
'sesskey' => $USER->sesskey
),
'pages' => array(
'enrol_easy' => new moodle_url('/enrol/easy/index.php'),
'enrol_easy_qr' => $enrol_easy_qr
),
'component' => array(
'main_javascript' => new moodle_url('/enrol/easy/js/enrol_easy.js'),
'jquery' => new moodle_url('/enrol/easy/js/jquery-3.2.0.min.js'),
),
'config' => array(
'qrenabled' => $this->get_config('qrenabled') && ($this->get_config('showqronmobile') || !isMobile()),
),
'lang' => array(
'enrolform_course_code' => get_string('enrolform_course_code', 'enrol_easy'),
'enrolform_submit' => get_string('enrolform_submit', 'enrol_easy')
),
);
return $OUTPUT->render_from_template('enrol_easy/form', $data);
}
public function use_standard_editing_ui() {
return true;
}
public function can_add_instance($courseid) {
global $DB;
$context = context_course::instance($courseid, MUST_EXIST);
if (!has_capability('moodle/course:enrolconfig', $context) or !has_capability('enrol/easy:config', $context)) {
return false;
}
if ($DB->record_exists('enrol', array('courseid' => $courseid, 'enrol' => 'easy'))) {
return false;
}
return true;
}
public function can_delete_instance($instance) {
$context = context_course::instance($instance->courseid);
return has_capability('enrol/easy:delete', $context);
}
public function can_hide_show_instance($instance) {
$context = context_course::instance($instance->courseid);
return has_capability('enrol/easy:config', $context);
}
public function edit_instance_form($instance, MoodleQuickForm $mform, $context) {
global $COURSE, $CFG, $DB, $OUTPUT;
require_once(dirname(__FILE__) . '/locallib.php');
$mform->updateAttributes(array('id' => 'enrol_easy_settings'));
$options = $this->get_status_options();
$mform->addElement('select', 'status', get_string('status', 'enrol_easy'), $options);
$mform->setType('status', PARAM_NOTAGS);
$mform->setDefault('status', $this->get_config('status', 'enrol_easy'));
$mform->addHelpButton('status', 'status', 'enrol_easy');
$options = array('optional' => true);
$mform->addElement('date_time_selector', 'enrolstartdate', get_string('enrolstartdate', 'enrol_easy'), $options);
$mform->setType('enrolstartdate', PARAM_NOTAGS);
$mform->setDefault('enrolstartdate', 0);
$mform->addHelpButton('enrolstartdate', 'enrolstartdate', 'enrol_easy');
$options = array('optional' => true);
$mform->addElement('date_time_selector', 'enrolenddate', get_string('enrolenddate', 'enrol_easy'), $options);
$mform->setType('enrolenddate', PARAM_NOTAGS);
$mform->setDefault('enrolenddate', 0);
$mform->addHelpButton('enrolenddate', 'enrolenddate', 'enrol_easy');
$mform->addElement('header', 'nameforyourheaderelement', get_string('header_coursecodes', 'enrol_easy'));
$allcodesobj = $DB->get_records('enrol_easy');
$allcodes = array();
foreach($allcodesobj as $c) {
$allcodes[] = $c;
}
$code = $DB->get_records('enrol_easy', array('course_id' => $COURSE->id, 'group_id' => null));
if ($code && (count($code) > 1)) {
$DB->delete_records('enrol_easy', array('course_id' => $COURSE->id, 'group_id' => null));
$code = NULL;
}
else {
$code = array_pop($code);
}
if (!$code) {
$code = randomstring(6);
while (array_key_exists($code, $allcodes)) {
$code = randomstring(6);
}
$dataobj = new stdClass();
$dataobj->course_id = $COURSE->id;
$dataobj->enrolmentcode = $code;
$DB->insert_record('enrol_easy', $dataobj);
$allcodes[] = $code;
}
else {
$code = $code->enrolmentcode;
}
$coursetext = get_string('coursetext', 'enrol_easy');
$codetext = $mform->addElement('text', 'course_' . $COURSE->id, $coursetext . $COURSE->fullname, array('readonly' => ''));
$mform->setType('course_' . $COURSE->id, PARAM_NOTAGS);
$mform->setDefault('course_' . $COURSE->id, $code);
$mform->updateElementAttr('course_' . $COURSE->id, array('data-type' => 'enroleasycode')); // For whatever reason it refuses to set a class, so data attr it is.
$mform->updateElementAttr('course_' . $COURSE->id, array('data-coursename' => $COURSE->fullname));
$groups = $DB->get_records('groups', array('courseid' => $COURSE->id));
foreach ($groups as $group) {
$code = $DB->get_records('enrol_easy', array('group_id' => $group->id));
if ($code && (count($code) > 1)) {
$DB->delete_records('enrol_easy', array('course_id' => $COURSE->id, 'group_id' => $group->id));
$code = NULL;
}
else {
$code = array_pop($code);
}
if ($code && $code->course_id != $COURSE->id) {
$DB->delete_records('enrol_easy', array('enrolmentcode' => $code->enrolmentcode));
$code = NULL;
}
if (!$code) {
$code = randomstring(6);
while (array_key_exists($code, $allcodes)) {
$code = randomstring(6);
}
$dataobj = new stdClass();
$dataobj->course_id = $COURSE->id;
$dataobj->group_id = $group->id;
$dataobj->enrolmentcode = $code;
$DB->insert_record('enrol_easy', $dataobj);
$allcodes[] = $code;
}
else {
$code = $code->enrolmentcode;
}
$grouptext = get_string('grouptext', 'enrol_easy');
$codetext = $mform->addElement('text', 'group_' . $group->id, $grouptext . $group->name, array('readonly' => '', 'value' => $code));
$mform->setType('group_' . $group->id, PARAM_NOTAGS);
$mform->setDefault('group_' . $group->id, $code);
$mform->updateElementAttr('group_' . $group->id, array('data-type' => 'enroleasycode')); // For whatever reason it refuses to set a class, so data attr it is.
$mform->updateElementAttr('group_' . $group->id, array('data-coursename' => $COURSE->fullname));
$mform->updateElementAttr('group_' . $group->id, array('data-groupname' => $group->name));
}
$mform->addElement('checkbox', 'regenerate_codes', get_string('regenerate_codes', 'enrol_easy'));
$mform->setType('regenerate_codes', PARAM_NOTAGS);
$mform->setDefault('regenerate_codes', $this->get_config('regenerate_codes'));
$mform->addHelpButton('regenerate_codes', 'regenerate_codes', 'enrol_easy');
if ($this->get_config('qrenabled')) {
$jquery_url = new moodle_url('/enrol/easy/js/jquery-3.2.0.min.js');
$qrcode_url = new moodle_url('/enrol/easy/js/jquery.qrcode.min.js');
$js_url = new moodle_url('/enrol/easy/js/enrol_easy.js');
$mform->addElement('html', '<script src="' . $jquery_url . '"></script>');
$mform->addElement('html', '<script src="' . $qrcode_url . '"></script>');
$mform->addElement('html', '<script src="' . $js_url . '"></script>');
}
}
public function get_instance_defaults() {
$fields = array();
return $fields;
}
public function edit_instance_validation($data, $files, $instance, $context) {
$errors = array();
return $errors;
}
public function update_instance($instance, $data) {
global $DB;
$enrolmentcodes = $DB->get_records('enrol_easy', array('course_id' => $instance->courseid));
$allcodesobj = $DB->get_records('enrol_easy');
$allcodes = array();
foreach($allcodesobj as $code) {
$allcodes[] = $code;
}
if ($data->regenerate_codes) {
foreach($enrolmentcodes as $enrolmentcode) {
$code = randomstring(6);
while (array_key_exists($code, $allcodes)) {
$code = randomstring(6);
}
$dataobj = new stdClass();
$dataobj->id = $enrolmentcode->id;
$dataobj->enrolmentcode = $code;
$allcodes[] = $code;
$DB->update_record('enrol_easy', $dataobj);
}
}
parent::update_instance($instance, $data);
header('Location: ' . $data->returnurl);
exit;
}
public function add_instance($course, array $fields = null) {
return parent::add_instance($course, $fields);
}
protected function get_status_options() {
$options = array(ENROL_INSTANCE_ENABLED => get_string('yes'),
ENROL_INSTANCE_DISABLED => get_string('no'));
return $options;
}
public function allow_unenrol(stdClass $instance) {
return true;
}
public function allow_unenrol_user(stdClass $instance, stdClass $ue) {
return true;
}
public function allow_manage(stdClass $instance) {
return true;
}
public function get_user_enrolment_actions(course_enrolment_manager $manager, $ue) {
$actions = array();
$context = $manager->get_context();
$instance = $ue->enrolmentinstance;
$params = $manager->get_moodlepage()->url->params();
$params['ue'] = $ue->id;
if ($this->allow_unenrol_user($instance, $ue) && has_capability("enrol/easy:unenrol", $context)) {
$url = new moodle_url('/enrol/unenroluser.php', $params);
$actions[] = new user_enrolment_action(new pix_icon('t/delete', ''), get_string('unenrol', 'enrol'), $url, array('class'=>'unenrollink', 'rel'=>$ue->id));
}
if ($this->allow_manage($instance) && has_capability("enrol/easy:manage", $context)) {
$url = new moodle_url('/enrol/editenrolment.php', $params);
$actions[] = new user_enrolment_action(new pix_icon('t/edit', ''), get_string('edit'), $url, array('class'=>'editenrollink', 'rel'=>$ue->id));
}
return $actions;
}
public function add_default_instance($course) {
$fields = $this->get_instance_defaults();
return $this->add_instance($course, $fields);
}
public function enrol_course_delete($course) {
$enrolmentcodes = $DB->delete_records('enrol_easy', array('course_id' => $course->id));
parent::enrol_course_delete($course);
}
}