protected function processUrl($url, OutputInterface $output)
{
try {
$output->write(sprintf($this->translator->translate('Processing URL %s...'), $url));
$this->previewGenerator->generatePreview($url);
$output->writeln($this->translator->translate(' <info>Success!</info>'));
} catch (PreviewGenerationException $e) {
$messages = [' <error>' . $this->translator->translate('Error') . '</error>'];
if ($output->isVerbose()) {
$messages[] = '<error>' . $e->__toString() . '</error>';
}
$output->writeln($messages);
}
}
/**
* Process an incoming request and/or response.
*
* Accepts a server-side request and a response instance, and does
* something with them.
*
* If the response is not complete and/or further processing would not
* interfere with the work done in the middleware, or if the middleware
* wants to delegate to another process, it can use the `$out` callable
* if present.
*
* If the middleware does not return a value, execution of the current
* request is considered complete, and the response instance provided will
* be considered the response to return.
*
* Alternately, the middleware may return a response instance.
*
* Often, middleware will `return $out();`, with the assumption that a
* later middleware will return a response.
*
* @param Request $request
* @param Response $response
* @param null|callable $out
* @return null|Response
*/
public function __invoke(Request $request, Response $response, callable $out = null)
{
$shortCode = $request->getAttribute('shortCode');
try {
$url = $this->urlShortener->shortCodeToUrl($shortCode);
if (!isset($url)) {
return $out($request, $response->withStatus(404), 'Not found');
}
$imagePath = $this->previewGenerator->generatePreview($url);
return $this->generateImageResponse($imagePath);
} catch (InvalidShortCodeException $e) {
return $out($request, $response->withStatus(404), 'Not found');
} catch (PreviewGenerationException $e) {
return $out($request, $response->withStatus(500), 'Preview generation error');
}
}