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<?php |
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namespace Yeelight\Http\Middleware; |
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use Closure; |
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use Illuminate\Http\Request; |
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use Illuminate\Support\Facades\Auth; |
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use Illuminate\Support\MessageBag; |
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use Symfony\Component\DomCrawler\Crawler; |
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use Symfony\Component\HttpFoundation\Response; |
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class Pjax |
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{ |
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/** |
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* Handle an incoming request. |
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* |
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* @param Request $request |
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* @param Closure $next |
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* |
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* @return Response |
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*/ |
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public function handle($request, Closure $next) |
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{ |
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$response = $next($request); |
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if (!$request->pjax() || $response->isRedirection() || Auth::guard(config('yeelight.backend.route.prefix'))->guest()) { |
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return $response; |
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} |
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if (!$response->isSuccessful()) { |
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return $this->handleErrorResponse($response); |
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} |
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try { |
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$this->filterResponse($response, $request->header('X-PJAX-CONTAINER')) |
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->setUriHeader($response, $request); |
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} catch (\Exception $exception) { |
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} |
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return $response; |
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} |
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/** |
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* Send a response through this middleware. |
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* |
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* @param Response $response |
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*/ |
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public static function respond(Response $response) |
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{ |
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$next = function () use ($response) { |
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return $response; |
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}; |
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(new static())->handle(Request::capture(), $next)->send(); |
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exit; |
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} |
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/** |
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* Handle Response with exceptions. |
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* |
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* @param Response $response |
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* |
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* @return \Illuminate\Http\RedirectResponse |
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*/ |
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protected function handleErrorResponse(Response $response) |
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{ |
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$exception = $response->exception; |
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$error = new MessageBag([ |
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'type' => get_class($exception), |
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'message' => $exception->getMessage(), |
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'file' => $exception->getFile(), |
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'line' => $exception->getLine(), |
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]); |
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return back()->withInput()->withErrors($error, 'exception'); |
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} |
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/** |
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* Prepare the PJAX-specific response content. |
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* |
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* @param Response $response |
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* @param string $container |
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* |
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* @return $this |
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*/ |
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protected function filterResponse(Response $response, $container) |
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{ |
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$crawler = new Crawler($response->getContent()); |
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$response->setContent( |
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$this->makeTitle($crawler). |
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$this->fetchContents($crawler, $container) |
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); |
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return $this; |
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} |
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/** |
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* Prepare an HTML title tag. |
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* |
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* @param Crawler $crawler |
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* |
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* @return string |
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*/ |
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protected function makeTitle($crawler) |
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{ |
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$pageTitle = $crawler->filter('head > title')->html(); |
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return "<title>{$pageTitle}</title>"; |
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} |
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/** |
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* Fetch the PJAX-specific HTML from the response. |
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* |
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* @param Crawler $crawler |
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* @param string $container |
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* |
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* @return string |
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*/ |
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protected function fetchContents($crawler, $container) |
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{ |
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$content = $crawler->filter($container); |
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if (!$content->count()) { |
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abort(422); |
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} |
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return $this->decodeUtf8HtmlEntities($content->html()); |
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} |
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/** |
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* Decode utf-8 characters to html entities. |
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* |
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* @param string $html |
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* |
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* @return string |
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*/ |
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protected function decodeUtf8HtmlEntities($html) |
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{ |
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return preg_replace_callback('/(&#[0-9]+;)/', function ($html) { |
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return mb_convert_encoding($html[1], 'UTF-8', 'HTML-ENTITIES'); |
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}, $html); |
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} |
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/** |
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* Set the PJAX-URL header to the current uri. |
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* |
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* @param Response $response |
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* @param Request $request |
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*/ |
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protected function setUriHeader(Response $response, Request $request) |
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{ |
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$response->header( |
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'X-PJAX-URL', |
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$request->getRequestUri() |
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); |
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} |
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} |
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Yeelight /
cloud2
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