watchlist/Classes/Session/CookieSessionService.php

<?php

declare(strict_types=1);

/*
 * Copyright (C) 2022 Daniel Siepmann <coding@daniel-siepmann.de>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

namespace WerkraumMedia\Watchlist\Session;

use TYPO3\CMS\Core\Http\ServerRequest;
use TYPO3\CMS\Extbase\Property\PropertyMapper;
use WerkraumMedia\Watchlist\Domain\Model\Item;
use WerkraumMedia\Watchlist\Domain\Model\Watchlist;

class CookieSessionService implements SessionServiceInterface
{
    private PropertyMapper $propertyMapper;

    private array $watchlists = [];

    // Seems to be a bug leading to different instances if we use constructor.
    public function injectPropertyMapper(PropertyMapper $propertyMapper): void
    {
        $this->propertyMapper = $propertyMapper;
    }

    public function getWatchlist(string $identifier): ?Watchlist
    {
        $cookieName = $this->getCookieName();
        $cookie = $this->getRequest()->getCookieParams()[$cookieName] ?? '';
        $items = array_filter(explode(
            ',',
            $this->getRequest()->getCookieParams()['watchlist'] ?? ''
        ));

        if ($items === []) {
            return null;
        }

        $watchlist = new Watchlist();

        array_map(function (string $item) use ($watchlist) {
            $mappedItem = $this->propertyMapper->convert($item, Item::class);
            if (!$mappedItem instanceof Item) {
                return;
            }

            $watchlist->addItem($mappedItem);
        }, $items);

        return $watchlist;
    }

    public function update(Watchlist $watchlist): void
    {
        $this->watchlists[$watchlist->getIdentifier()] = array_map(
            fn (Item $item) => $item->getUniqueIdentifier(),
            $watchlist->getItems()
        );
    }

    public function getCookieName(): string
    {
        return 'watchlist';
    }

    public function getCookieValue(): string
    {
        return implode(',', $this->watchlists['default'] ?? []);
    }

    private function getRequest(): ServerRequest
    {
        return $GLOBALS['TYPO3_REQUEST'];
    }
}