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<?php |
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namespace Fermi; |
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use FastRoute\Dispatcher; |
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use League\Plates\Engine; |
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use FastRoute\RouteCollector; |
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use Psr\Http\Message\ResponseInterface; |
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use Zend\Diactoros\ServerRequestFactory; |
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use Psr\Http\Server\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use Psr\Http\Message\ServerRequestInterface; |
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class Framework |
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{ |
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/** |
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* Create a new request from the php globals environment. |
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* |
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* Note: If you want to use a different PSR-7 implementation this would be |
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* the proper place to replace the stock implementation of zend\diactoros. |
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* |
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* @return Psr\Http\Message\ServerRequestInterface |
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*/ |
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public static function requestFromGlobals(): ServerRequestInterface |
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{ |
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return ServerRequestFactory::fromGlobals(); |
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} |
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/** |
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* Returns the full middleware stack. |
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* |
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* @return array |
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*/ |
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public static function stack(): array |
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{ |
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return static::config('middleware'); |
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} |
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/** |
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* Create a middleware stack that is resolvable by PSR-15. |
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* |
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* @param array $stack array of callables or strings. |
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* @return array |
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*/ |
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public static function middleware(array $stack): array |
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{ |
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return array_map(function ($callable) { |
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$callable = is_string($callable) ? static::lazy($callable) : $callable; |
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return $callable; |
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}, $stack); |
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} |
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/** |
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* Returns a closure which, when called, will create an instance of the |
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* class passed to it and then call __invoke() with middleware arguments. |
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* |
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* @param string $className fully-qualified name of a class |
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* @return callable |
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*/ |
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public static function lazy(string $className): callable |
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{ |
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return function (ServerRequestInterface $request, RequestHandlerInterface $handler) use ($className): ResponseInterface { |
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$class = new $className(); |
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if ($class instanceof MiddlewareInterface) { |
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return $class->process($request, $handler); |
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} else { |
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return $class($request, $handler); |
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} |
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}; |
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} |
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/** |
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* Use FastRouter\simpleDispatcher to collect the routes into a FastRoute\Dispatcher. |
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* |
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* @param Psr\Http\Message\ServerRequestInterface $request |
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* @param string $path |
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* @return Psr\Http\Message\ResponseInterface |
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*/ |
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public static function router(ServerRequestInterface $request, string $path = null): ResponseInterface |
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{ |
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$path = $path ?: __DIR__ . "/../app/routes.php"; |
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$dispatcher = \FastRoute\simpleDispatcher(function (RouteCollector $r) use ($path) { |
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include $path; |
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}); |
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$match = $dispatcher->dispatch($request->getMethod(), $request->getUri()->getPath()); |
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return static::resolve($request, $match); |
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} |
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/** |
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* Resolve an HTTP request match. |
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* |
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* @param Psr\Http\Message\ServerRequestInterface $request |
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* @param array $match Route match. When using fast router will be array. |
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* @return Psr\Http\Message\ResponseInterface |
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*/ |
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public static function resolve(ServerRequestInterface $request, array $match): ResponseInterface |
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{ |
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switch ($match[0]) { |
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case Dispatcher::FOUND: |
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array_unshift($match[2], $request); |
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return call_user_func_array($match[1], $match[2]); |
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case Dispatcher::METHOD_NOT_ALLOWED: |
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return Response::error405($request); |
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default: |
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return Response::error404($request); |
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} |
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} |
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/** |
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* Load a given configuration file or array. |
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* |
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* @param string $name config file name |
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* @param string $dir path to directory storing the config file |
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* @return array |
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*/ |
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public static function config(string $name, string $dir = null): array |
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{ |
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$dir = $dir ?: __DIR__ . "/../config"; |
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$location = rtrim($dir, "/") . "/" . ltrim($name, "/") . ".php"; |
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if (!file_exists($location)) { |
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throw new \InvalidArgumentException('Requested configuration file does not exist: ' . $location); |
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} |
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$config = include $location; |
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if (!is_array($config)) { |
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throw new \InvalidArgumentException('Requested configuration file does not return an array: ' . $location); |
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} |
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return $config; |
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} |
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/** |
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* Get the rendering engine. |
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* |
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* @return League\Plates\Engine |
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*/ |
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public static function engine(): Engine |
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{ |
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return new Engine(__DIR__ . "/../views"); |
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} |
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/** |
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* Render a given view with our template engine. |
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* |
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* @param string $view name of the view |
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* @param array $data data to pass through to our template |
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* @param Engine $engine alternative rendering engine |
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* @return string |
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*/ |
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public static function render(string $view, array $data, Engine $engine = null): string |
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{ |
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$engine = ($engine instanceof Engine) ? $engine : static::engine(); |
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return $engine->render($view, $data); |
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} |
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} |
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