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[GitHub/WoltLab/WCF.git] / wcfsetup / install / files / lib / data / article / LikeableArticleProvider.class.php

<?php

namespace wcf\data\article;

use wcf\data\like\ILikeObjectTypeProvider;
use wcf\data\like\object\ILikeObject;
use wcf\data\object\type\AbstractObjectTypeProvider;
use wcf\system\like\IViewableLikeProvider;
use wcf\system\WCF;

/**
 * Like Object type provider for cms articles.
 *
 * @author  Marcel Werk
 * @copyright   2001-2019 WoltLab GmbH
 * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 * @since   3.0
 *
 * @method  LikeableArticle     getObjectByID($objectID)
 * @method  LikeableArticle[]       getObjectsByIDs(array $objectIDs)
 */
class LikeableArticleProvider extends AbstractObjectTypeProvider implements
    ILikeObjectTypeProvider,
    IViewableLikeProvider
{
    /**
     * @inheritDoc
     */
    public $className = Article::class;

    /**
     * @inheritDoc
     */
    public $listClassName = ArticleList::class;

    /**
     * @inheritDoc
     */
    public $decoratorClassName = LikeableArticle::class;

    /**
     * @inheritDoc
     */
    public function checkPermissions(ILikeObject $object)
    {
        /** @var LikeableArticle $object */
        return $object->articleID && $object->canRead();
    }

    /**
     * @inheritDoc
     */
    public function prepare(array $likes)
    {
        $articleIDs = [];
        foreach ($likes as $like) {
            $articleIDs[] = $like->objectID;
        }

        // fetch articles
        $articleList = new ViewableArticleList();
        $articleList->setObjectIDs($articleIDs);
        $articleList->readObjects();
        $articles = $articleList->getObjects();

        // set message
        foreach ($likes as $like) {
            if (isset($articles[$like->objectID])) {
                $article = $articles[$like->objectID];

                // check permissions
                if (!$article->canRead()) {
                    continue;
                }
                $like->setIsAccessible();

                // short output
                $text = WCF::getLanguage()->getDynamicVariable('wcf.like.title.com.woltlab.wcf.likeableArticle', [
                    'article' => $article,
                    'reaction' => $like,
                    // @deprecated 5.3 Use `$reaction` instead
                    'like' => $like,
                ]);
                $like->setTitle($text);

                // output
                $like->setDescription($article->getTeaser());
            }
        }
    }
}