joomla-oauth-server/plg_system_oauthserver/src/Extension/Plugin.php

<?php
/**
 * @package         Joomla.Site
 * @subpackage      com_oauthserver
 *
 * @copyright   (c) 2024. Webmasterskaya. <https://webmasterskaya.xyz>
 * @license         MIT; see LICENSE.txt
 **/

namespace Webmasterskaya\Plugin\System\OauthServer\Extension;

use Joomla\CMS\Application\SiteApplication;
use Joomla\CMS\Factory;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\CMS\Router\SiteRouter;
use Joomla\CMS\Uri\Uri;
use Joomla\Event\SubscriberInterface;

// phpcs:disable PSR1.Files.SideEffects
\defined('_JEXEC') or die;

// phpcs:enable PSR1.Files.SideEffects

class Plugin extends CMSPlugin implements SubscriberInterface
{
    public static function getSubscribedEvents(): array
    {
        return [
            'onAfterInitialise' => 'attachOauthRouter',
        ];
    }

    /**
     * @return void
     * @since version
     */
    public function attachOauthRouter(): void
    {
        /** @var SiteApplication $app */
        $app = $this->getApplication();

        if (!$app->isClient('site'))
        {
            return;
        }

        /** @var SiteRouter $siteRouter */
        $siteRouter = Factory::getContainer()->get(SiteRouter::class);
        $siteRouter->attachParseRule([$this, 'parseOauthRoute'], $siteRouter::PROCESS_BEFORE);
    }

    /**
     * @param   SiteRouter  $router
     * @param   Uri         $uri
     *
     * @return void
     * @since version
     */
    public function parseOauthRoute(SiteRouter &$router, Uri &$uri): void
    {
        $route = trim($uri->getPath(), '/');

        if (empty($route))
        {
            return;
        }

        if (!str_starts_with($route, 'login/oauth'))
        {
            return;
        }

        $segments = explode('/', $route);

        $uri->setVar('option', 'com_oauthserver');
        $uri->setVar('task', 'login.' . $segments[2]);
        if ($segments[2] !== 'authorize')
        {
            $uri->setVar('format', 'json');
        }
        $uri->setVar('view', 'default');

        $uri->setPath('');
    }
}