jschreuder\Middle\ServerMiddleware\RequestValidatorMiddleware

Complexity

Total Complexity

4

Size/Duplication

Total Lines	28
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	process()	0	17	3

<?php declare(strict_types = 1);

namespace jschreuder\Middle\ServerMiddleware;

use Interop\Http\ServerMiddleware\DelegateInterface;
use Interop\Http\ServerMiddleware\MiddlewareInterface;
use jschreuder\Middle\Controller\RequestValidatorInterface;
use jschreuder\Middle\Controller\ValidationFailedException;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

final class RequestValidatorMiddleware implements MiddlewareInterface
{
    /** @var  callable */
    private $errorHandler;

    public function __construct(callable $errorHandler)
    {
        $this->errorHandler = $errorHandler;
    }

    public function process(ServerRequestInterface $request, DelegateInterface $delegate): ResponseInterface
    {
        $controller = $request->getAttribute('controller');

        if ($controller instanceof RequestValidatorInterface) {
            // Execute the request-validator from the controller
            try {
                $controller->validateRequest($request);
            } catch (ValidationFailedException $exception) {
                // Hand of to error-handler on failure
                return ($this->errorHandler)($request, $exception);
            }
        }

        // Filtered and validated (if applicable), let's continue on
        return $delegate->process($request);
    }
}