Psr7Middlewares\Utils\StorageTrait

Complexity

Total Complexity

5

Size/Duplication

Total Lines	55
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes	3
Bugs	1	Features	0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	startStorage()	0	4	1
A	stopStorage()	0	7	1
A	getStorage()	0	14	3

<?php

namespace Psr7Middlewares\Utils;

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

/**
 * Trait to save middleware related things in the current session.
 */
trait StorageTrait
{
    use AttributeTrait;

    /**
     * Init the storage array.
     *
     * @param ServerRequestInterface $request
     * @param array                  $storage
     * 
     * @return ServerRequestInterface
     */
    private static function startStorage(ServerRequestInterface $request, array $storage)
    {
        return self::setAttribute($request, Middleware::STORAGE_KEY, (object) $storage);
    }

    /**
     * Stop the storage.
     *
     * @param ServerRequestInterface $request
     * 
     * @return array
     */
    private static function stopStorage(ServerRequestInterface $request)
    {
        $storage = self::getAttribute($request, Middleware::STORAGE_KEY);
        self::setAttribute($request, Middleware::STORAGE_KEY, null);

        return (array) $storage;
    }

    /**
     * Returns the value of a storage array.
     *
     * @param ServerRequestInterface $request
     * @param string|null            $key
     * 
     * @return array
     */
    private static function &getStorage(ServerRequestInterface $request, $key = null)
    {
        if (!self::hasAttribute($request, Middleware::STORAGE_KEY)) {
            throw new RuntimeException('No session storage initialized');
        }

        $storage = self::getAttribute($request, Middleware::STORAGE_KEY);

        if (!isset($storage->$key)) {
            $storage->$key = [];
        }

        return $storage->$key;
    }
}