Equip\Dispatch\Stack

Complexity

Total Complexity

5

Size/Duplication

Total Lines	75
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

80%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	4	1
A	append()	0	4	1
A	prepend()	0	4	1
A	process()	0	6	1
A	dispatch()	0	6	1

<?php

namespace Equip\Dispatch;

use Interop\Http\Middleware\DelegateInterface;
use Interop\Http\Middleware\ServerMiddlewareInterface;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;

class Stack implements ServerMiddlewareInterface
{
    /**
     * @var callable
     */
    private $default;

    /**
     * @var array
     */
    private $middleware = [];

    /**
     * @param array $middleware
     */
    public function __construct(...$middleware)
    {
        array_map([$this, 'append'], $middleware);
    }

    /**
     * Add a middleware to the end of the stack.
     *
     * @param ServerMiddlewareInterface $middleware
     *
     * @return void
     */
    public function append(ServerMiddlewareInterface $middleware)
    {
        array_push($this->middleware, $middleware);
    }

    /**
     * Add a middleware to the beginning of the stack.
     *
     * @param ServerMiddlewareInterface $middleware
     *
     * @return void
     */
    public function prepend(ServerMiddlewareInterface $middleware)
    {
        array_unshift($this->middleware, $middleware);
    }

    /**
     * Process an incoming server request and return a response, optionally delegating
     * to the next middleware component to create the response.
     *
     * @param ServerRequestInterface $request
     * @param DelegateInterface $nextContanierDelegate
     *
     * @return ResponseInterface
     */
    public function process(ServerRequestInterface $request, DelegateInterface $nextContanierDelegate)
    {
        $delegate = new Delegate($this->middleware, new DelegateToCallableAdapter($nextContanierDelegate));

        return $delegate->process($request);
    }

    /**
     * Dispatch the middleware stack.
     *
     * @param ServerRequestInterface $request
     * @param callable $default to call when no middleware is available
     *
     * @return ResponseInterface
     */
    public function dispatch(ServerRequestInterface $request, callable $default)
    {
        $delegate = new Delegate($this->middleware, $default);

        return $delegate->process($request);
    }
}