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<?php |
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declare(strict_types=1); |
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namespace jin2chen\ApiBundle\Response; |
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use League\Fractal\Manager as Fractal; |
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use League\Fractal\Resource\Collection; |
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use League\Fractal\Resource\ResourceAbstract; |
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use League\Fractal\Serializer\SerializerAbstract as Serializer; |
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use Symfony\Component\HttpFoundation\JsonResponse; |
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use Symfony\Component\Stopwatch\Stopwatch; |
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use function implode; |
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use function sprintf; |
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use const JSON_UNESCAPED_UNICODE; |
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/** |
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* Converts a response type to an appropriate response format. |
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*/ |
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final class ResponseConverter |
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{ |
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private Fractal $fractal; |
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private ?Stopwatch $stopwatch; |
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public function __construct(Fractal $fractal, Serializer $serializer, Stopwatch $stopwatch = null) |
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{ |
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$this->fractal = $fractal; |
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$this->stopwatch = $stopwatch; |
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$this->setSerializer($serializer); |
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} |
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public function setSerializer(Serializer $serializer): self |
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{ |
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$this->fractal->setSerializer($serializer); |
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return $this; |
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} |
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public function toArray(ResponseTypeInterface $type): array |
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{ |
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$this->processIncludes($type); |
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return $this->createData($type->asResource()); |
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} |
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public function toJson(ResponseTypeInterface $type): JsonResponse |
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{ |
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$resource = $type->asResource(); |
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$this->processIncludes($type); |
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return $this->createResponse($resource, $this->createData($resource)); |
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} |
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private function processIncludes(ResponseTypeInterface $type): void |
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{ |
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$this->profile('fractal.process_includes', fn() => $this->fractal->parseIncludes($type->getIncludes())); |
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} |
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private function createData(ResourceAbstract $resource): array |
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{ |
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return (array) $this->profile( |
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'fractal.create_data_array', |
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fn() => $this->fractal->createData($resource)->toArray() |
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); |
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} |
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private function createResponse(ResourceAbstract $resource, array $data): JsonResponse |
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{ |
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/** @var JsonResponse $response */ |
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$response = $this->profile( |
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'fractal.create_json_response', |
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fn() => (new JsonResponse($data))->setEncodingOptions(JSON_UNESCAPED_UNICODE) |
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); |
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if ($resource instanceof Collection && $resource->hasPaginator()) { |
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$paginator = $resource->getPaginator(); |
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$header = []; |
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if (($paginator->getCurrentPage() - 1) > 0) { |
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$header[] = sprintf('%s; rel="previous"', $paginator->getUrl($paginator->getCurrentPage() - 1)); |
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} |
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if (($paginator->getCurrentPage() + 1) <= $paginator->getLastPage()) { |
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$header[] = sprintf('%s; rel="next"', $paginator->getUrl($paginator->getCurrentPage() + 1)); |
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} |
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$response->headers->add( |
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[ |
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'X-API-Pagination-TotalResults' => $paginator->getTotal(), |
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'X-API-Pagination-Page' => $paginator->getCurrentPage(), |
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'X-API-Pagination-PageCount' => $paginator->getLastPage(), |
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'X-API-Pagination-PageResults' => $paginator->getCount(), |
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'X-API-Pagination-PageSize' => $paginator->getPerPage(), |
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'Link' => implode(', ', $header), |
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] |
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); |
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} |
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return $response; |
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} |
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private function profile(string $segment, callable $callback): mixed |
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{ |
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$this->start($segment); |
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/** @var mixed $return */ |
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$return = $callback(); |
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$this->stop($segment); |
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return $return; |
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} |
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private function start(string $name): void |
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{ |
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if (!$this->stopwatch) { |
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return; |
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} |
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$this->stopwatch->start($name); |
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} |
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private function stop(string $name): void |
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{ |
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if (!$this->stopwatch) { |
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return; |
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} |
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$this->stopwatch->stop($name); |
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} |
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} |
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