ItemState.php

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<?php

namespace ILIAS\GlobalScreen\Client;

use ILIAS\GlobalScreen\Identification\IdentificationInterface;
use ILIAS\GlobalScreen\Scope\MainMenu\Collector\Renderer\Hasher;

class ItemState
{
    use Hasher;
    const LEVEL_OF_TOOL = 1;
    const LEVEL_OF_TOPITEM = 2;
    const LEVEL_OF_SUBITEM = 10;
    const COOKIE_NS_GS = 'gs_active_items';
    private $identification;
    private $storage = [];


    public function __construct(IdentificationInterface $identification)
    {
        $this->identification = $identification;
        $this->storage = $this->getStorage();
    }


    public function isItemActive() : bool
    {
        $hash = $this->hash($this->identification->serialize());
        $b = isset($this->storage[$hash]) && $this->storage[$hash] == true;

        return $b;
    }


    public function getStorage() : array
    {
        static $json_decode;
        if (!isset($json_decode)) {
            $json_decode = json_decode($_COOKIE[self::COOKIE_NS_GS], true);
            $json_decode = is_array($json_decode) ? $json_decode : [];
        }

        return $json_decode;
    }
}