Zanzara\Middleware\MiddlewareCollector

Complexity

Total Complexity

3

Size/Duplication

Total Lines	44
Duplicated Lines	0 %

Importance

Changes	1
Bugs	0	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	middleware()	0	11	2

<?php

declare(strict_types=1);

namespace Zanzara\Middleware;

use Psr\Container\ContainerInterface;
use Zanzara\Support\CallableResolver;

/**
 * Middleware is a LIFO (Last In First Out) stack.
 *
 */
abstract class MiddlewareCollector
{
    use CallableResolver;

    /**
     * Tip of the middleware stack.
     *
     * @var MiddlewareNode
     */
    protected $tip;

    /**
     * @var ContainerInterface
     */
    private $container;

    /**
     * MiddlewareCollector constructor.
     * @param  ContainerInterface  $container
     */
    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    /**
     * Last in, first out.
     *
     * @param  MiddlewareInterface|callable  $middleware
     * @return MiddlewareCollector
     * @throws \DI\DependencyException
     * @throws \DI\NotFoundException
     */
    public function middleware($middleware): self
    {
        // if not an instance implementing middleware interface, try to resolve the callable
        if (!($middleware instanceof MiddlewareInterface)) {
            $middleware = $this->getCallable($middleware);
        }

        $next = $this->tip;
        $node = new MiddlewareNode($middleware, $next);
        $this->tip = $node;
        return $this;
    }

}