ot_typo3/ot_templating/Classes/Utilities/OtPageRepository.php

<?php

namespace Opentalent\OtTemplating\Utilities;

use FluidTYPO3\Vhs\Service\PageService;
use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Extbase\Object\ObjectManager;
use TYPO3\CMS\Frontend\Page\PageRepository;

/**
 * Class OtPageRepository
 *
 * Provides some useful methods to query typo3 pages
 *
 * @package Opentalent\OtTemplating\Page
 */
class OtPageRepository extends PageRepository
{

    /**
     * Returns the root page of the given page,
     * or the page itself if the given page is
     * already the rootpage of the site
     *
     * @param $pageUid
     *
     * @return array
     */
    public function getRootPageFor($pageUid) {

        $pageService = GeneralUtility::makeInstance(ObjectManager::class)->get(PageService::class);
        $rootLine = $pageService->getRootLine($pageUid);

        for (end($rootLine); key($rootLine)!==null; prev($rootLine)){
            $page = current($rootLine);
            if ($page['is_siteroot'] == 1) {
                return $page;
            }
        }
        return [];
    }

    /**
     * Recursively returns all the subpages of the given page
     *
     * @param $pageUid
     * @return array
     */
    public function getAllSubpagesForPage($pageUid) {
        $subpages = [];

        $stack = $this->getSubpagesForPages(
            [$pageUid],
            '*',
            'sorting',
            '',
            false
        );

        foreach ($stack as $page) {
            $subpages[] = $page;
            $children = $this->getAllSubpagesForPage($page['uid']);
            if (!empty($children)) {
                $subpages = array_merge($subpages, $children);
            }
        }
        return $subpages;
    }


}