Jagepard / PhpDesignPatterns-Memento

src/Caretaker.php

<?php

declare(strict_types=1);

/**
 * @author  : Jagepard <jagepard@yandex.ru>
 * @license https://mit-license.org/ MIT
 */

namespace Behavioral\Memento;

class Caretaker implements CaretakerInterface
{
    private OriginatorInterface $originator;
    private array $history = [];

    /**
     * Accepts an object
     * -------------------------
     * Принимает объект в работу
     *
     * @param  OriginatorInterface $originator
     */
    public function __construct(OriginatorInterface $originator)
    {
        $this->originator = $originator;
    }

    /**
     * Restores the previous state
     * ------------------------------------
     * Восстанавливает предыдущее состояние
     *
     * @return void
     */
    public function undo(): void
    {
        $memento = array_pop($this->history)->getMemento();
        $this->originator->setState($memento["state"], $memento["date"]);
    }

    /**
     * Stores data about the current state of an object
     * ------------------------------------------------
     * Сохраняет данные о текущем состоянии объекта
     *
     * @return void
     */
    public function save(): void
    {
        sleep(1); // for example
        $this->history[] = new Memento([
                "state" => $this->originator->getState(),
                "date"  => $this->originator->getDate()

The method getDate() does not exist on Behavioral\Memento\OriginatorInterface. Since it exists in all sub-types, consider adding an abstract or default implementation to Behavioral\Memento\OriginatorInterface.

            ]
        );
    }
}