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<?php |
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declare(strict_types=1); |
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/* |
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* This file is part of Flight Routing. |
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* |
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* PHP version 7.1 and above required |
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* |
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* @author Divine Niiquaye Ibok <[email protected]> |
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* @copyright 2019 Biurad Group (https://biurad.com/) |
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* @license https://opensource.org/licenses/BSD-3-Clause License |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Flight\Routing\Middlewares; |
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use Flight\Routing\Route; |
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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\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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/** |
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* Resolves request uri path, route path, and response status. |
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* |
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* The response status code is 302 if the permanent parameter is false (default), |
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* and 301 if the redirection is permanent on redirection. |
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* |
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* @author Divine Niiquaye Ibok <[email protected]> |
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*/ |
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class PathMiddleware implements MiddlewareInterface |
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{ |
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/** @var bool */ |
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private $permanent; |
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/** @var bool */ |
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private $keepRequestMethod; |
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/** |
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* @param bool $permanent Whether the redirection is permanent |
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* @param bool $keepRequestMethod Whether redirect action should keep HTTP request method |
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*/ |
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public function __construct(bool $permanent = false, bool $keepRequestMethod = false) |
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{ |
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$this->permanent = $permanent; |
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$this->keepRequestMethod = $keepRequestMethod; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $handler): ResponseInterface |
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{ |
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// Supported prefix for uri paths ... |
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$prefixRegex = '#(?|\\' . \implode('|\\', Route::URL_PREFIX_SLASHES) . ')+$#'; |
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$requestUri = $request->getUri(); |
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$response = $handler->handle($request); |
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$requestPath = \preg_replace($prefixRegex, $requestUri->getPath()[-1], $requestUri->getPath()); |
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// Determine the response code should keep HTTP request method ... |
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$statusCode = $this->keepRequestMethod ? ($this->permanent ? 308 : 307) : ($this->permanent ? 301 : 302); |
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if ($requestUri->getPath() !== $requestPath) { |
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return $response->withHeader('Location', (string) $requestUri->withPath($requestPath))->withStatus($statusCode); |
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} |
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$route = $request->getAttribute(Route::class); |
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if ($route instanceof Route) { |
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$routeEndTail = Route::URL_PREFIX_SLASHES[$route->get('path')[-1]] ?? null; |
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$requestEndTail = Route::URL_PREFIX_SLASHES[$requestPath[-1]] ?? null; |
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if ($routeEndTail === $requestEndTail) { |
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return $response; |
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} |
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// Resolve request tail end to avoid conflicts and infinite redirection looping ... |
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if (null === $routeEndTail && null !== $requestEndTail || (isset($routeEndTail, $requestEndTail) && $routeEndTail !== $requestEndTail)) { |
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$requestPath = \substr($requestPath, 0, -1); |
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} elseif (null !== $routeEndTail && null === $requestEndTail) { |
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$requestPath .= $routeEndTail; |
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} |
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// Allow Redirection if exists and avoid static request. |
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return $response->withAddedHeader('Location', (string) $requestUri->withPath($requestPath))->withStatus($statusCode); |
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} |
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return $response; |
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} |
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} |
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divineniiquaye /
flight-routing
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