php-auth/src/Controllers/CapabilitiesController.php

<?php

declare(strict_types=1);

namespace Siteworxpro\App\Controllers;

use Nyholm\Psr7\ServerRequest;
use Psr\Http\Message\ResponseInterface;
use Siteworxpro\App\Http\JsonResponseFactory;
use Siteworxpro\App\Http\Responses\NotFoundResponse;
use Siteworxpro\App\OAuth\Entities\Client;

final class CapabilitiesController extends Controller
{
    /**
     * @throws \JsonException
     */
    public function get(ServerRequest $request): ResponseInterface
    {
        $clientId = $request->getQueryParams()['client_id'] ?? '0';

        $client = Client::byClientId($clientId);

        if (!$client) {
            return JsonResponseFactory::createJsonResponse(new NotFoundResponse($request->getUri()->getPath()));
        }

        return JsonResponseFactory::createJsonResponse($client->capabilities->toArray());
    }
}