<?php

namespace wcf\data\category;

use wcf\data\DatabaseObjectDecorator;
use wcf\data\IObjectTreeNode;
use wcf\data\TObjectTreeNode;

/**
 * Represents a category node.
 *
 * @author  Matthias Schmidt
 * @copyright   2001-2019 WoltLab GmbH
 * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 * @package WoltLabSuite\Core\Data\Category
 *
 * @method  Category    getDecoratedObject()
 * @mixin   Category
 */
class CategoryNode extends DatabaseObjectDecorator implements IObjectTreeNode
{
    use TObjectTreeNode;

    /**
     * @inheritDoc
     */
    protected static $baseClass = Category::class;

    /**
     * Returns true if this category is visible in a nested menu item list.
     *
     * @param AbstractDecoratedCategory $activeCategory
     * @return  bool
     * @since       5.2
     */
    public function isVisibleInNestedList(?AbstractDecoratedCategory $activeCategory = null)
    {
        if (!$this->getParentCategory() || !$this->getParentCategory()->getParentCategory()) {
            // level 1 & 2 are always visible
            return true;
        }

        if ($activeCategory) {
            if (
                $activeCategory->categoryID == $this->categoryID
                || $activeCategory->isParentCategory($this->getDecoratedObject())
            ) {
                // is the active category or a parent of the active category
                return true;
            }

            if ($this->getParentCategory()->categoryID == $activeCategory->categoryID) {
                // is a direct child element of the active category
                return true;
            }
        }

        return false;
    }
}