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<?php |
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declare(strict_types=1); |
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namespace roxblnfk\SmartStream\Middleware; |
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use Psr\Http\Message\ResponseInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\StreamFactoryInterface; |
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use Psr\Http\Message\StreamInterface; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use roxblnfk\SmartStream\Stream\BucketStream; |
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use Yiisoft\Http\Header; |
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final class BucketStreamMiddleware implements MiddlewareInterface |
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{ |
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private StreamFactoryInterface $streamFactory; |
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public function __construct(StreamFactoryInterface $streamFactory) |
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{ |
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$this->streamFactory = $streamFactory; |
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} |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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$response = $handler->handle($request); |
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$stream = $response->getBody(); |
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if (!$stream instanceof BucketStream) { |
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return $response; |
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} |
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$bucket = $stream->getBucket(); |
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// Bucket has been detached |
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if ($bucket === null) { |
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return $stream->isReadable() ? $response : $response->withBody($this->streamFactory->createStream('')); |
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} |
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if (!$stream->hasConverter() && !$bucket->isConvertable() && !$stream->isReadable()) { |
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$response = $response->withBody($this->createReadableStream($bucket->getData())); |
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} |
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// Set MIME type |
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$matching = $stream->getMatchedResult(); |
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if ($matching !== null && $matching->getMimeType() !== null) { |
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$response = $response->withHeader(Header::CONTENT_TYPE, $matching->getMimeType()); |
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} |
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// Update request |
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if ($bucket->getStatusCode() !== null) { |
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$response = $response->withStatus($bucket->getStatusCode()); |
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} |
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return $this->addHeaderList($response, $bucket->getHeaders()); |
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} |
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private function addHeaderList(ResponseInterface $response, array $headers): ResponseInterface |
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{ |
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foreach ($headers as $header => $value) { |
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$response = $response->withHeader($header, $value); |
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} |
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return $response; |
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} |
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private function createReadableStream($data): StreamInterface |
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{ |
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if ($data instanceof \SplFileInfo) { |
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return $this->streamFactory->createStreamFromFile($data->getRealPath()); |
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} |
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if (is_resource($data)) { |
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return $this->streamFactory->createStreamFromResource($data); |
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} |
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return $this->streamFactory->createStream(is_string($data) ? $data : ''); |
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} |
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} |
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roxblnfk /
smart-stream
