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<?php |
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namespace CybozuHttp\Middleware; |
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use GuzzleHttp\Exception\ClientException; |
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use GuzzleHttp\Exception\RequestException; |
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use GuzzleHttp\Exception\ServerException; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* @author ochi51 <[email protected]> |
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*/ |
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class FinishMiddleware |
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{ |
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/** |
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* Called when the middleware is handled by the client. |
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* |
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* @param callable $handler |
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* |
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* @return \Closure |
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*/ |
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public function __invoke(callable $handler) |
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{ |
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return function ($request, array $options) use ($handler) { |
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return $handler($request, $options)->then( |
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$this->onFulfilled($request), |
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$this->onRejected($request) |
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); |
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}; |
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} |
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/** |
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* @param RequestInterface $request |
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* @return \Closure |
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*/ |
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private function onFulfilled(RequestInterface $request) |
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{ |
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return function (ResponseInterface $response) use ($request) { |
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return $response->withBody(new JsonStream($response->getBody())); |
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}; |
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} |
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/** |
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* @param RequestInterface $request |
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* @return \Closure |
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*/ |
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private function onRejected(RequestInterface $request) |
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{ |
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return function ($reason) use ($request) { |
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if ($reason instanceof RequestException) { |
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$response = $reason->getResponse(); |
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if ($response && $response->getStatusCode() >= 300) { |
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self::jsonError($request, $response); |
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self::domError($request, $response); |
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} |
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} |
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}; |
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} |
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/** |
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* @param RequestInterface $request |
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* @param ResponseInterface $response |
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*/ |
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private static function domError(RequestInterface $request, ResponseInterface $response) |
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{ |
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$body = (string)$response->getBody(); |
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$dom = new \DOMDocument('1.0', 'UTF-8'); |
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$dom->preserveWhiteSpace = false; |
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$dom->formatOutput = true; |
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$dom->loadHTML($body); |
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if ($dom->loadHTML($body)) { |
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$title = $dom->getElementsByTagName('title'); |
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if (is_object($title)) { |
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$title = $title->item(0)->nodeValue; |
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} |
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if ($title === 'Error') { |
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$message = $dom->getElementsByTagName('h3')->item(0)->nodeValue; |
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throw self::createException($message, $request, $response); |
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} |
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if ($title === 'Unauthorized') { |
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$message = $dom->getElementsByTagName('h2')->item(0)->nodeValue; |
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throw self::createException($message, $request, $response); |
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} |
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throw self::createException('Invalid auth.', $request, $response); |
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} |
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} |
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/** |
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* @param RequestInterface $request |
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* @param ResponseInterface $response |
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*/ |
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private static function jsonError(RequestInterface $request, ResponseInterface $response) |
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{ |
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try { |
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$body = (string)$response->getBody(); |
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$json = json_decode($body, true); |
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if (json_last_error() !== JSON_ERROR_NONE) { |
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throw new \RuntimeException( |
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'Error trying to decode response: ' . |
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json_last_error_msg() |
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); |
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} |
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} catch (\RuntimeException $e) { |
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return; |
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} |
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$message = $json['message']; |
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if (isset($json['errors']) && is_array($json['errors'])) { |
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$message .= self::addErrorMessages($json['errors']); |
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} |
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throw self::createException($message, $request, $response); |
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} |
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/** |
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* @param array $errors |
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* @return string |
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*/ |
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private static function addErrorMessages(array $errors) |
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{ |
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$message = ' ('; |
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foreach ($errors as $k => $err) { |
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$message .= $k . ' : '; |
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if (is_array($err['messages'])) { |
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foreach ($err['messages'] as $m) { |
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$message .= $m . ' '; |
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} |
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} else { |
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$message .= $err['messages']; |
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} |
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} |
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$message .= ' )'; |
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return $message; |
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} |
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/** |
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* @param string $message |
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* @param RequestInterface $request |
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* @param ResponseInterface|null $response |
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* @return RequestException |
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*/ |
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private static function createException($message, RequestInterface $request, ResponseInterface $response) |
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{ |
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$level = (int) floor($response->getStatusCode() / 100); |
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$className = RequestException::class; |
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if ($level === 4) { |
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$className = ClientException::class; |
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} elseif ($level === 5) { |
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$className = ServerException::class; |
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} |
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return new $className($message, $request, $response); |
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} |
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} |