local_webhooks/editservice.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/>.

/**
 * Page for editing the service.
 *
 * @package   local_webhooks
 * @copyright 2017 "Valentin Popov" <info@valentineus.link>
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(__DIR__ . '/../../config.php');
require_once(__DIR__ . '/classes/service_form.php');
require_once(__DIR__ . '/lib.php');

require_once($CFG->libdir . '/adminlib.php');

/* Optional parameters */
$serviceid = optional_param('serviceid', 0, PARAM_INT);

/* Link generation */
$urlparameters = array('serviceid' => $serviceid);
$baseurl = new moodle_url('/local/webhooks/editservice.php', $urlparameters);
$managerservice = new moodle_url('/local/webhooks/index.php');

/* Configure the context of the page */
admin_externalpage_setup('local_webhooks', '', null, $baseurl);
$context = context_system::instance();

/* Create an editing form */
$mform = new service_edit_form($PAGE->url);

/* Cancel processing */
if ($mform->is_cancelled()) {
    redirect($managerservice);
}

/* Getting the data */
$servicerecord = new stdClass();
if (($editing = (bool) $serviceid) === true) {
    $servicerecord = local_webhooks_get_record($serviceid);

    if (is_array($servicerecord->events)) {
        $events = array();

        /* Escaping event names */
        foreach ($servicerecord->events as $eventname => $eventstatus) {
            $eventname = base64_encode($eventname);
            $events[$eventname] = $eventstatus;
        }

        $servicerecord->events = $events;
    }

    $mform->set_data($servicerecord);
}

/* Processing of received data */
if (!empty($data = $mform->get_data())) {
    if (is_array($data->events)) {
        $events = array();

        /* Deciphering event names */
        foreach ($data->events as $eventname => $eventstatus) {
            $eventname = (string) base64_decode($eventname);
            $events[$eventname] = $eventstatus;
        }

        $data->events = $events;
    }

    if ($editing) {
        $data->id = $serviceid;
        local_webhooks_update_record($data, false);
        redirect($managerservice, new lang_string('eventwebserviceserviceupdated', 'webservice'));
    } else {
        local_webhooks_update_record($data);
        redirect($managerservice, new lang_string('eventwebserviceservicecreated', 'webservice'));
    }
}

/* The page title */
$titlepage = new lang_string('externalservice', 'webservice');
$PAGE->navbar->add($titlepage);
$PAGE->set_heading($titlepage);
$PAGE->set_title($titlepage);
echo $OUTPUT->header();

/* Displays the form */
$mform->display();

echo $OUTPUT->footer();