Psr7Middlewares\Middleware\AttributeMapper

Complexity

Total Complexity

3

Size/Duplication

Total Lines	45
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	2

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	__invoke()	0	14	2

<?php
namespace Psr7Middlewares\Middleware;

use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr7Middlewares\Middleware;

/**
 * Provides ability to route Psr7Middlewares specific attributes into scalar attributes.
 *
 * @todo Raise an exception if no attribute found?
 */
class AttributeMapper
{
    /**
     * @var array
     */
    private $mapping = [];

    /**
     * Example:
     *
     * [
     *      BasicAuthentication::KEY => 'basic.username'
     * ]
     *
     * @param array $mapping
     */
    public function __construct(array $mapping)
    {
        $this->mapping = $mapping;
    }

    /**
     * Execute the middleware.
     *
     * @param ServerRequestInterface $request
     * @param ResponseInterface      $response
     * @param callable               $next
     *
     * @return ResponseInterface
     */
    public function __invoke(
        ServerRequestInterface $request,
        ResponseInterface $response,
        callable $next
    ) {
        foreach ($this->mapping as $middleware => $attribute) {
            $request = $request->withAttribute(
                $attribute,
                Middleware::getAttribute($request, $middleware)
            );
        }

        return $next($request, $response);
    }
}