9.5/_meta_tag_generator_8php_source.html

<?php

declare(strict_types = 1);


namespace ‪TYPO3\CMS\Seo\MetaTag;


/*

 * This file is part of the TYPO3 CMS project.

 *

 * It is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License, either version 2

 * of the License, or any later version.

 *

 * For the full copyright and license information, please read the

 * LICENSE.txt file that was distributed with this source code.

 *

 * The TYPO3 project - inspiring people to share!

 */


use ‪TYPO3\CMS\Core\Imaging\ImageManipulation\CropVariantCollection;

use ‪TYPO3\CMS\Core\MetaTag\MetaTagManagerRegistry;

use ‪TYPO3\CMS\Core\Resource\FileReference;

use ‪TYPO3\CMS\Core\Resource\ProcessedFile;

use ‪TYPO3\CMS\Core\Utility\GeneralUtility;

use ‪TYPO3\CMS\Extbase\Service\ImageService;

use ‪TYPO3\CMS\Frontend\Resource\FileCollector;


class ‪MetaTagGenerator

{

    public function ‪generate(array $params)

    {

        ‪$metaTagManagerRegistry = GeneralUtility::makeInstance(MetaTagManagerRegistry::class);


        if (!empty($params['page']['description'])) {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('description');

            $manager->addProperty('description', $params['page']['description']);

        }


        if (!empty($params['page']['og_title'])) {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('og:title');

            $manager->addProperty('og:title', $params['page']['og_title']);

        }


        if (!empty($params['page']['og_description'])) {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('og:description');

            $manager->addProperty('og:description', $params['page']['og_description']);

        }


        if (!empty($params['page']['og_image'])) {

            $fileCollector = GeneralUtility::makeInstance(FileCollector::class);

            $fileCollector->addFilesFromRelation('pages', 'og_image', $params['page']);

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('og:image');


            $ogImages = $this->‪generateSocialImages($fileCollector->getFiles());

            foreach ($ogImages as $ogImage) {

                $subProperties = [];

                $subProperties['url'] = $ogImage['url'];

                $subProperties['width'] = $ogImage['width'];

                $subProperties['height'] = $ogImage['height'];


                if (!empty($ogImage['alternative'])) {

                    $subProperties['alt'] = $ogImage['alternative'];

                }


                $manager->addProperty(

                    'og:image',

                    $ogImage['url'],

                    $subProperties

                );

            }

        }


        /*

         * Set type of twitter card to summary. This value can be overridden by TypoScript or the MetaTag API by

         * using the replace option. In v10 this will be a page property

        */

        $manager = ‪$metaTagManagerRegistry->getManagerForProperty('twitter:card');

        $manager->addProperty('twitter:card', 'summary');


        if (!empty($params['page']['twitter_title'])) {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('twitter:title');

            $manager->addProperty('twitter:title', $params['page']['twitter_title']);

        }


        if (!empty($params['page']['twitter_description'])) {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('twitter:description');

            $manager->addProperty('twitter:description', $params['page']['twitter_description']);

        }


        if (!empty($params['page']['twitter_image'])) {

            $fileCollector = GeneralUtility::makeInstance(FileCollector::class);

            $fileCollector->addFilesFromRelation('pages', 'twitter_image', $params['page']);

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('twitter:image');


            $twitterImages = $this->‪generateSocialImages($fileCollector->getFiles());

            foreach ($twitterImages as $twitterImage) {

                $subProperties = [];


                if (!empty($twitterImage['alternative'])) {

                    $subProperties['alt'] = $twitterImage['alternative'];

                }


                $manager->addProperty(

                    'twitter:image',

                    $twitterImage['url'],

                    $subProperties

                );

            }

        }


        $noIndex = ((bool)$params['page']['no_index']) ? 'noindex' : 'index';

        $noFollow = ((bool)$params['page']['no_follow']) ? 'nofollow' : 'follow';


        if ($noIndex === 'noindex' || $noFollow === 'nofollow') {

            $manager = ‪$metaTagManagerRegistry->getManagerForProperty('robots');

            $manager->addProperty('robots', implode(',', [$noIndex, $noFollow]));

        }

    }


    protected function ‪generateSocialImages(array $fileReferences): array

    {

        $imageService = GeneralUtility::makeInstance(ImageService::class);


        $socialImages = [];


        foreach ($fileReferences as $file) {

            $arguments = $file->getProperties();

            $cropVariantCollection = ‪CropVariantCollection::create((string)$arguments['crop']);

            $cropVariant = $arguments['cropVariant'] ?: 'social';

            $cropArea = $cropVariantCollection->getCropArea($cropVariant);

            $crop = $cropArea->makeAbsoluteBasedOnFile($file);


            $cropInformation = $crop->asArray();


            $processingConfiguration = [

                'crop' => $crop

            ];


            $processedImage = $file->getOriginalFile()->process(

                ‪ProcessedFile::CONTEXT_IMAGECROPSCALEMASK,

                $processingConfiguration

            );


            $imageUri = $imageService->getImageUri($processedImage, true);


            $socialImages[] = [

                'url' => $imageUri,

                'width' => floor($cropInformation['width']),

                'height' => floor($cropInformation['height']),

                'alternative' => $arguments['alternative'],

            ];

        }


        return $socialImages;

    }

}