Merge pull request #7030 from nextcloud/proper_og_image

Use the new direct endpoint for the OpenGraph image

apps/files_sharing/lib/Controller/ShareController.php

@@ -373,15 +373,20 @@ class ShareController extends Controller {
 		$shareTmpl['previewMaxY'] = $this->config->getSystemValue('preview_max_y', 1024);
 		$shareTmpl['disclaimer'] = $this->config->getAppValue('core', 'shareapi_public_link_disclaimertext', null);
 		$shareTmpl['previewURL'] = $shareTmpl['downloadURL'];
+		$ogPreview = '';
 		if ($shareTmpl['previewSupported']) {
 			$shareTmpl['previewImage'] = $this->urlGenerator->linkToRouteAbsolute( 'files_sharing.PublicPreview.getPreview',
 				['x' => 200, 'y' => 200, 'file' => $shareTmpl['directory_path'], 't' => $shareTmpl['dirToken']]);
+			$ogPreview = $shareTmpl['previewImage'];
+
 			// We just have direct previews for image files
 			if ($share->getNode()->getMimePart() === 'image') {
 				$shareTmpl['previewURL'] = $this->urlGenerator->linkToRouteAbsolute('files_sharing.publicpreview.directLink', ['token' => $token]);
+				$ogPreview = $shareTmpl['previewURL'];
 			}
 		} else {
 			$shareTmpl['previewImage'] = $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'favicon-fb.png'));
+			$ogPreview = $shareTmpl['previewImage'];
 		}
 
 		// Load files we need
@@ -411,7 +416,7 @@ class ShareController extends Controller {
 		\OCP\Util::addHeader('meta', ['property' => "og:site_name", 'content' => $this->defaults->getName()]);
 		\OCP\Util::addHeader('meta', ['property' => "og:url", 'content' => $shareTmpl['shareUrl']]);
 		\OCP\Util::addHeader('meta', ['property' => "og:type", 'content' => "object"]);
-		\OCP\Util::addHeader('meta', ['property' => "og:image", 'content' => $shareTmpl['previewImage']]);
+		\OCP\Util::addHeader('meta', ['property' => "og:image", 'content' => $ogPreview]);
 
 		$this->eventDispatcher->dispatch('OCA\Files_Sharing::loadAdditionalScripts');