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<?php |
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/** |
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* @package WPEmerge |
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* @author Atanas Angelov <hi@atanas.dev> |
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* @copyright 2017-2019 Atanas Angelov |
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* @license https://www.gnu.org/licenses/gpl-2.0.html GPL-2.0 |
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* @link https://wpemerge.com/ |
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*/ |
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|
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namespace WPEmerge\Middleware; |
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|
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use Closure; |
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use Psr\Http\Message\ResponseInterface; |
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use WPEmerge\Requests\RequestInterface; |
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|
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/** |
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* Executes middleware. |
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*/ |
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trait ExecutesMiddlewareTrait { |
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/** |
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* Make a middleware class instance. |
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* |
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* @param string $class |
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* @return object |
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*/ |
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abstract protected function makeMiddleware( $class ); |
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|
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/** |
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* Execute an array of middleware recursively (last in, first out). |
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* |
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* @param string[][] $middleware |
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* @param RequestInterface $request |
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* @param Closure $next |
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* @return ResponseInterface |
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*/ |
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protected function executeMiddleware( $middleware, RequestInterface $request, Closure $next ) { |
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$top_middleware = array_shift( $middleware ); |
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|
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if ( $top_middleware === null ) { |
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return $next( $request ); |
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} |
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|
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$top_middleware_next = function ( $request ) use ( $middleware, $next ) { |
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return $this->executeMiddleware( $middleware, $request, $next ); |
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}; |
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|
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$instance = $this->makeMiddleware( $top_middleware[0] ); |
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$arguments = array_merge( |
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[$request, $top_middleware_next], |
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array_slice( $top_middleware, 1 ) |
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); |
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|
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return call_user_func_array( [$instance, 'handle'], $arguments ); |
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} |
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} |
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|
