<?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/>.

namespace core\oauth2\client;

use core\oauth2\client;

/**
 * Custom oauth2 client for Microsoft to handle specific requirements.
 *
 * @package    core
 * @copyright  2025 Huong Nguyen <huongnv13@gmail.com>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class microsoft extends client {

    #[\Override]
    public function get_additional_upgrade_token_parameters(): array {
        $issuer = $this->get_issuer();
        if ($issuer->get('showonloginpage') == $issuer::SMTPWITHXOAUTH2) {
            // We are using this issuer for SMTP with XOAUTH2.
            // We need to add the SMTP scope to the token request.
            return [
                'scope' => 'https://outlook.office.com/SMTP.Send',
            ];
        }
        return parent::get_additional_upgrade_token_parameters();
    }
}