OpenapiRequestHandler.php

<?php

declare(strict_types=1);

namespace App\Core\RequestHandler;

use Psr\Http\Message\ResponseFactoryInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\StreamFactoryInterface;
use Psr\Http\Server\RequestHandlerInterface;

final class OpenapiRequestHandler implements RequestHandlerInterface
{
    public function __construct(
        private readonly ResponseFactoryInterface $responseFactory,
        private readonly StreamFactoryInterface $streamFactory
    ) {}

    public function handle(ServerRequestInterface $request): ResponseInterface
    {
        return $this->responseFactory
            ->createResponse(200)
            ->withHeader('Content-Type', 'application/x-yaml')
            ->withHeader('Cache-Control', 'no-cache, no-store, must-revalidate')
            ->withHeader('Pragma', 'no-cache')
            ->withHeader('Expires', '0')
            ->withBody($this->streamFactory->createStreamFromFile(__DIR__.'/../../../openapi.yml'))
        ;
    }
}