add dav property to check if a file has a preview available

1 files changed, 17 insertions, 0 deletions

diff --git a/apps/dav/lib/Connector/Sabre/FilesPlugin.php b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
index 203c0a4683f..c472f75b6bf 100644
--- a/apps/dav/lib/Connector/Sabre/FilesPlugin.php
+++ b/apps/dav/lib/Connector/Sabre/FilesPlugin.php
@@ -33,6 +33,7 @@ namespace OCA\DAV\Connector\Sabre;
 use OC\Files\View;
 use OCA\DAV\Upload\FutureFile;
 use OCP\Files\ForbiddenException;
+use OCP\IPreview;
 use Sabre\DAV\Exception\Forbidden;
 use Sabre\DAV\Exception\NotFound;
 use Sabre\DAV\IFile;
@@ -50,6 +51,7 @@ class FilesPlugin extends ServerPlugin {
 
 	// namespace
 	const NS_OWNCLOUD = 'http://owncloud.org/ns';
+	const NS_NEXTCLOUD = 'http://nextcloud.org/ns';
 	const FILEID_PROPERTYNAME = '{http://owncloud.org/ns}id';
 	const INTERNAL_FILEID_PROPERTYNAME = '{http://owncloud.org/ns}fileid';
 	const PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}permissions';
@@ -62,6 +64,7 @@ class FilesPlugin extends ServerPlugin {
 	const OWNER_DISPLAY_NAME_PROPERTYNAME = '{http://owncloud.org/ns}owner-display-name';
 	const CHECKSUMS_PROPERTYNAME = '{http://owncloud.org/ns}checksums';
 	const DATA_FINGERPRINT_PROPERTYNAME = '{http://owncloud.org/ns}data-fingerprint';
+	const HAS_PREVIEW_PROPERTYNAME = '{http://nextcloud.org/ns}has-preview';
 
 	/**
 	 * Reference to main server object
@@ -104,10 +107,16 @@ class FilesPlugin extends ServerPlugin {
 	private $request;
 
 	/**
+	 * @var IPreview
+	 */
+	private $previewManager;
+
+	/**
 	 * @param Tree $tree
 	 * @param View $view
 	 * @param IConfig $config
 	 * @param IRequest $request
+	 * @param IPreview $previewManager
 	 * @param bool $isPublic
 	 * @param bool $downloadAttachment
 	 */
@@ -115,6 +124,7 @@ class FilesPlugin extends ServerPlugin {
 								View $view,
 								IConfig $config,
 								IRequest $request,
+								IPreview $previewManager,
 								$isPublic = false,
 								$downloadAttachment = true) {
 		$this->tree = $tree;
@@ -123,6 +133,7 @@ class FilesPlugin extends ServerPlugin {
 		$this->request = $request;
 		$this->isPublic = $isPublic;
 		$this->downloadAttachment = $downloadAttachment;
+		$this->previewManager = $previewManager;
 	}
 
 	/**
@@ -139,6 +150,7 @@ class FilesPlugin extends ServerPlugin {
 	public function initialize(\Sabre\DAV\Server $server) {
 
 		$server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';
+		$server->xml->namespaceMap[self::NS_NEXTCLOUD] = 'nc';
 		$server->protectedProperties[] = self::FILEID_PROPERTYNAME;
 		$server->protectedProperties[] = self::INTERNAL_FILEID_PROPERTYNAME;
 		$server->protectedProperties[] = self::PERMISSIONS_PROPERTYNAME;
@@ -149,6 +161,7 @@ class FilesPlugin extends ServerPlugin {
 		$server->protectedProperties[] = self::OWNER_DISPLAY_NAME_PROPERTYNAME;
 		$server->protectedProperties[] = self::CHECKSUMS_PROPERTYNAME;
 		$server->protectedProperties[] = self::DATA_FINGERPRINT_PROPERTYNAME;
+		$server->protectedProperties[] = self::HAS_PREVIEW_PROPERTYNAME;
 
 		// normally these cannot be changed (RFC4918), but we want them modifiable through PROPPATCH
 		$allowedProperties = ['{DAV:}getetag'];
@@ -316,6 +329,10 @@ class FilesPlugin extends ServerPlugin {
 					return $this->config->getSystemValue('data-fingerprint', '');
 				}
 			});
+
+			$propFind->handle(self::HAS_PREVIEW_PROPERTYNAME, function () use ($node) {
+				return json_encode($this->previewManager->isAvailable($node->getFileInfo()));
+			});
 		}
 
 		if ($node instanceof \OCA\DAV\Files\FilesHome) {