settings.php

<?php
// 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/>.

/**
 * local_discoursesso
 *
 *
 * @package    local
 * @subpackage discoursesso
 * @copyright  2017 Saylor Academy
 * @author     John Azinheira
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/

defined('MOODLE_INTERNAL') || die;


if ( $hassiteconfig ){
 
	// Create the new settings page
	// - in a local plugin this is not defined as standard, so normal $settings->methods will throw an error as
	// $settings will be NULL
	$settings = new admin_settingpage( 'local_discoursesso', get_string('settingstitle', 'local_discoursesso'));
 

	// Create 
 	$ADMIN->add('localplugins', new admin_category('discoursessoroot', new lang_string('pluginname', 'local_discoursesso')));
 	$ADMIN->add( 'discoursessoroot', $settings );
	$settings->add(
		new admin_setting_configtext('discoursesso_api_key', get_string('apikeylabel', 'local_discoursesso'), get_string('apikeyhelp', 'local_discoursesso'), '', PARAM_RAW)
	);

	$settings->add(
		new admin_setting_configtext('discoursesso_secret_key', get_string('secretkeylabel', 'local_discoursesso'), get_string('secretkeyhelp', 'local_discoursesso'), '', PARAM_RAW)
	);

	$settings->add(
		new admin_setting_configtext('discoursesso_discourse_url', get_string('discourseurllabel', 'local_discoursesso'), get_string('discourseurlhelp', 'local_discoursesso'), 'https://discourse.example', PARAM_URL)
	);

	$name = 'local_discoursesso/locale';
    $label = get_string('localelabel', 'local_discoursesso');
    $help = get_string('localehelp', 'local_discoursesso');
    $setting = new admin_setting_configcheckbox($name, $label, $help, 1);
    $settings->add($setting);

	$name = 'local_discoursesso/adminsync';
    $label = get_string('adminsynclabel', 'local_discoursesso');
    $help = get_string('adminsynchelp', 'local_discoursesso');
    $setting = new admin_setting_configcheckbox($name, $label, $help, 1);
    $settings->add($setting);

    // Add manage affiliates page to the affiliations node.
    $ADMIN->add('discoursessoroot', new admin_externalpage('local_discoursesso_managegroups', get_string('plugingrouppagename', 'local_discoursesso'),
            new moodle_url('/local/discoursesso/groups.php')));
 
}