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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Engelsystem\Middleware; |
| 6 | |
| 7 | use Engelsystem\Container\Container; |
| 8 | use Engelsystem\Http\Response; |
| 9 | use InvalidArgumentException; |
| 10 | use Psr\Http\Message\ResponseInterface; |
| 11 | use Psr\Http\Message\ServerRequestInterface; |
| 12 | use Psr\Http\Server\MiddlewareInterface; |
| 13 | use Psr\Http\Server\RequestHandlerInterface; |
| 14 | |
| 15 | /** |
| 16 | * Wraps a callable to be used to respond / as a middleware |
| 17 | */ |
| 18 | class CallableHandler implements MiddlewareInterface, RequestHandlerInterface |
| 19 | { |
| 20 | /** @var callable */ |
| 21 | protected $callable; |
| 22 | |
| 23 | /** |
| 24 | * @param callable $callable The callable that should be wrapped |
| 25 | */ |
| 26 | public function __construct(callable $callable, protected ?Container $container = null) |
| 27 | { |
| 28 | $this->callable = $callable; |
| 29 | } |
| 30 | |
| 31 | /** |
| 32 | * Process an incoming server request and return a response, optionally delegating |
| 33 | * response creation to a handler. |
| 34 | */ |
| 35 | public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
| 36 | { |
| 37 | return $this->execute([$request, $handler]); |
| 38 | } |
| 39 | |
| 40 | /** |
| 41 | * Handle the request and return a response. |
| 42 | */ |
| 43 | public function handle(ServerRequestInterface $request): ResponseInterface |
| 44 | { |
| 45 | return $this->execute([$request]); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Execute the callable and return a response |
| 50 | */ |
| 51 | protected function execute(array $arguments = []): ResponseInterface |
| 52 | { |
| 53 | $return = call_user_func_array($this->callable, $arguments); |
| 54 | |
| 55 | if ($return instanceof ResponseInterface) { |
| 56 | return $return; |
| 57 | } |
| 58 | |
| 59 | if (!$this->container instanceof Container) { |
| 60 | throw new InvalidArgumentException('Unable to resolve response'); |
| 61 | } |
| 62 | |
| 63 | /** @var Response $response */ |
| 64 | $response = $this->container->get('response'); |
| 65 | return $response->withContent($return); |
| 66 | } |
| 67 | |
| 68 | public function getCallable(): callable |
| 69 | { |
| 70 | return $this->callable; |
| 71 | } |
| 72 | } |