57 lines
1.6 KiB
PHP
57 lines
1.6 KiB
PHP
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<?php
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namespace Engelsystem\Middleware;
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use Engelsystem\Application;
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use InvalidArgumentException;
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use Psr\Http\Server\MiddlewareInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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trait ResolvesMiddlewareTrait
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{
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/**
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* Resolve the middleware with the container
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*
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* @param string|callable|MiddlewareInterface|RequestHandlerInterface $middleware
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* @return MiddlewareInterface|RequestHandlerInterface
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*/
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protected function resolveMiddleware($middleware)
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{
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if ($this->isMiddleware($middleware)) {
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return $middleware;
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}
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if (!property_exists($this, 'container') || !$this->container instanceof Application) {
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throw new InvalidArgumentException('Unable to resolve middleware');
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}
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/** @var Application $container */
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$container = $this->container;
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if (is_string($middleware)) {
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$middleware = $container->make($middleware);
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}
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if (is_callable($middleware)) {
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$middleware = $container->make(CallableHandler::class, ['callable' => $middleware]);
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}
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if ($this->isMiddleware($middleware)) {
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return $middleware;
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}
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throw new InvalidArgumentException('Unable to resolve middleware');
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}
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/**
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* Checks if the given object is a middleware or middleware or request handler
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*
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* @param mixed $middleware
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* @return bool
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*/
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protected function isMiddleware($middleware)
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{
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return ($middleware instanceof MiddlewareInterface || $middleware instanceof RequestHandlerInterface);
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}
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}
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