From b06aa109d5b47427db39480812f354dc66768aad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bjo=CC=88rn=20Fromme?= <fromme@dreipunktnull.com>
Date: Thu, 10 Oct 2019 14:19:42 +0200
Subject: [PATCH] Implement default image for og:image meta tag

---
 .../MetaTag/OpenGraphMetaTagManager.php       | 45 +++++++++++++++++++
 .../TypoScript/constants.typoscript           |  2 +
 .../Configuration/TypoScript/setup.typoscript |  1 +
 .../typo3conf/ext/ep_theme/ext_localconf.php  |  6 +++
 4 files changed, 54 insertions(+)
 create mode 100644 public/typo3conf/ext/ep_theme/Classes/MetaTag/OpenGraphMetaTagManager.php

diff --git a/public/typo3conf/ext/ep_theme/Classes/MetaTag/OpenGraphMetaTagManager.php b/public/typo3conf/ext/ep_theme/Classes/MetaTag/OpenGraphMetaTagManager.php
new file mode 100644
index 00000000..3ae358d9
--- /dev/null
+++ b/public/typo3conf/ext/ep_theme/Classes/MetaTag/OpenGraphMetaTagManager.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace EP\EpTheme\MetaTag;
+
+use TYPO3\CMS\Core\Resource\ResourceFactory;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Extbase\Configuration\ConfigurationManager;
+use TYPO3\CMS\Extbase\Configuration\ConfigurationManagerInterface;
+use TYPO3\CMS\Extbase\Service\ImageService;
+
+class OpenGraphMetaTagManager extends \TYPO3\CMS\Seo\MetaTag\OpenGraphMetaTagManager
+{
+    public function renderAllProperties(): string
+    {
+        if (!array_key_exists('og:image', $this->properties)) {
+            /** @var ConfigurationManager $configurationManager */
+            $configurationManager = GeneralUtility::makeInstance(ConfigurationManager::class);
+            $settings = GeneralUtility::removeDotsFromTS(
+                $configurationManager->getConfiguration(ConfigurationManagerInterface::CONFIGURATION_TYPE_FULL_TYPOSCRIPT)
+            );
+            $imageSource = $settings['plugin']['tx_eptheme']['settings']['ogDefaultImage'];
+            $resourceFactory = ResourceFactory::getInstance();
+            $image = $resourceFactory->getFileObjectFromCombinedIdentifier(sprintf('1:%s', $imageSource));
+
+            if (null !== $image) {
+                /** @var ImageService $imageService */
+                $imageService = GeneralUtility::makeInstance(ImageService::class);
+                $processedImage = $imageService->applyProcessingInstructions($image, ['width' => '1200']);
+
+                $this->addProperty(
+                    'og:image',
+                    $imageService->getImageUri($processedImage, true),
+                    [
+                        'url' => $imageService->getImageUri($processedImage, true),
+                        'width' => $processedImage->getProperty('width'),
+                        'height' => $processedImage->getProperty('height'),
+                        'type' => $processedImage->getMimeType(),
+                    ]
+                );
+            }
+        }
+
+        return parent::renderAllProperties();
+    }
+}
\ No newline at end of file
diff --git a/public/typo3conf/ext/ep_theme/Configuration/TypoScript/constants.typoscript b/public/typo3conf/ext/ep_theme/Configuration/TypoScript/constants.typoscript
index 114b9ba5..c4463a82 100644
--- a/public/typo3conf/ext/ep_theme/Configuration/TypoScript/constants.typoscript
+++ b/public/typo3conf/ext/ep_theme/Configuration/TypoScript/constants.typoscript
@@ -90,6 +90,8 @@ plugin.tx_eptheme {
 		facebookViewContentProductUid =
 		# cat=eptheme/100/150; type=string; label=Facebook ViewContent 'name internal'
 		facebookViewContentNameInternal =
+		# cat=eptheme/100/160; type=string; label=OG default image
+		ogDefaultImage = user_upload/Open_Graph__Linkvorschau_/Home-Vorschaubild.jpg
 
 		# cat=eptheme; type=string; label=Slider storage PID
 		sliderStoragePid =
diff --git a/public/typo3conf/ext/ep_theme/Configuration/TypoScript/setup.typoscript b/public/typo3conf/ext/ep_theme/Configuration/TypoScript/setup.typoscript
index 5d7df14c..7b3c7fe1 100644
--- a/public/typo3conf/ext/ep_theme/Configuration/TypoScript/setup.typoscript
+++ b/public/typo3conf/ext/ep_theme/Configuration/TypoScript/setup.typoscript
@@ -94,6 +94,7 @@ plugin.tx_eptheme {
             productUid = {$plugin.tx_eptheme.settings.facebookViewContentProductUid}
             nameInternal = {$plugin.tx_eptheme.settings.facebookViewContentNameInternal}
         }
+        ogDefaultImage = {$plugin.tx_eptheme.settings.ogDefaultImage}
         domainsToTrack = bpn.ep-reisen.de,www.ski-boarderweek.de,www.ski-wochenenden.de,www.snowzone.net,www.unichamp.de
     }
     view {
diff --git a/public/typo3conf/ext/ep_theme/ext_localconf.php b/public/typo3conf/ext/ep_theme/ext_localconf.php
index b50e4f81..d3cd8edb 100644
--- a/public/typo3conf/ext/ep_theme/ext_localconf.php
+++ b/public/typo3conf/ext/ep_theme/ext_localconf.php
@@ -14,6 +14,12 @@ $GLOBALS['TYPO3_CONF_VARS']['FE']['addRootLineFields'] = 'tx_eptheme_slides';
 $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['default'] = 'EXT:ep_theme/Configuration/RTE/Default.yaml';
 $GLOBALS['TYPO3_CONF_VARS']['RTE']['Presets']['ep-reisen'] = 'EXT:ep_theme/Configuration/RTE/Default.yaml';
 
+$metaTagManagerRegistry = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Core\MetaTag\MetaTagManagerRegistry::class);
+$metaTagManagerRegistry->registerManager(
+    'ep_opengraph',
+    \EP\EpTheme\MetaTag\OpenGraphMetaTagManager::class
+);
+
 \TYPO3\CMS\Extbase\Utility\ExtensionUtility::configurePlugin(
     'EP.EpTheme',
     'SimpleForm',