mirror of
https://github.com/werkraum-media/events.git
synced 2024-11-10 04:56:09 +01:00
Daniel Siepmann
7db61a189a
https://ogp.me/ is used by some platforms, especially social media, to generate previews of shared links. The extension now delivers default open-graph tags for better user experience. Twitter uses its own way which is also supported.
127 lines
4 KiB
PHP
127 lines
4 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* Copyright (C) 2023 Daniel Siepmann <coding@daniel-siepmann.de>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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namespace WerkraumMedia\Events\Frontend\MetaInformation;
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use TYPO3\CMS\Core\MetaTag\GenericMetaTagManager;
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use TYPO3\CMS\Core\MetaTag\MetaTagManagerRegistry;
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use TYPO3\CMS\Core\Utility\GeneralUtility;
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use WerkraumMedia\Events\Domain\Model\Event;
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use WerkraumMedia\Events\Frontend\PageTitleProvider\EventTitleProviderInterface;
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/**
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* TYPO3 has many different APIs to set meta information like: Page Title, Meta Tags, OpenGraph Tags, etc.
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* Those are combined here for Event detail view.
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* That way there is a single place to connect the details to TYPO3 APIs.
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*/
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final class EventMetaInformationService implements EventMetaInformationInterface
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{
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public function __construct(
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private readonly MetaTagManagerRegistry $metaTagManagerRegistry,
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private readonly EventTitleProviderInterface $titleProvider
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) {
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}
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public function setEvent(Event $event): void
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{
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$this->titleProvider->setEvent($event);
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$this->setDescription($event);
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$this->setKeywords($event);
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$this->setOpenGraphTags($event);
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$this->setSocialMediaTags($event);
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}
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private function setDescription(Event $event): void
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{
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$description = $event->getTeaser();
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if ($description === '') {
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return;
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}
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$this->metaTagManagerRegistry
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->getManagerForProperty('description')
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->addProperty('description', $description)
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;
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}
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private function setKeywords(Event $event): void
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{
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$keywords = $event->getKeywords();
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if ($keywords === '') {
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return;
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}
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$this->metaTagManagerRegistry
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->getManagerForProperty('keywords')
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->addProperty('keywords', $keywords)
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;
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}
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private function setOpenGraphTags(Event $event): void
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{
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$tags = array_filter([
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'title' => $this->titleProvider->getTitle(),
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'type' => 'website',
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'image' => $this->getImageUrl($event),
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]);
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foreach ($tags as $property => $value) {
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$property = 'og:' . $property;
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$manager = $this->metaTagManagerRegistry->getManagerForProperty($property);
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if ($manager instanceof GenericMetaTagManager) {
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continue;
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}
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$manager->addProperty($property, $value);
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}
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}
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private function setSocialMediaTags(Event $event): void
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{
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$title = $this->titleProvider->getTitle();
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$tags = array_filter([
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'twitter:card' => 'summary',
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'twitter:title' => $title,
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'twitter:description' => $event->getTeaser(),
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'twitter:image' => $this->getImageUrl($event),
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]);
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foreach ($tags as $property => $value) {
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$this->metaTagManagerRegistry
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->getManagerForProperty($property)
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->addProperty($property, $value)
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;
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}
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}
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private function getImageUrl(Event $event): string
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{
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$imageUrl = $event->getImages()[0]?->getOriginalResource()->getPublicUrl() ?? '';
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if ($imageUrl) {
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$imageUrl = GeneralUtility::locationHeaderUrl($imageUrl);
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}
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return $imageUrl;
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}
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}
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