status.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/>.

/**
 * Change task's status.
 *
 * @package    tool_etl
 * @copyright  2017 Dmitrii Metelkin <dmitriim@catalyst-au.net>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

use tool_etl\task_manager;

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

admin_externalpage_setup('tool_etl_settings');

$action = 'status';
$id = required_param('id', PARAM_INT);

$indexurl = new moodle_url('/admin/tool/etl/index.php');

$task = task_manager::get_task($id);

$newstatus = 1 - $task->enabled;

$task->set_enabled($newstatus);
$task->save();

redirect($indexurl);