feat: exposed metadata column to frontend

Signed-off-by: Eduardo Morales <emoral435@gmail.com>

Author: emoral435

apps/files_versions/lib/Listener/MetadataFileEvents.php

@@ -54,13 +54,14 @@ public function handle(Event $event): void {
 	 * @param Node $node the node that is currently being written
 	 */
 	public function post_write_hook(Node $node): void {
+		$user = $this->userSession->getUser();
 		// Do not handle folders or users that we cannot get metadata from
-		if ($node instanceof Folder || is_null($this->userSession->getUser())) {
+		if ($node instanceof Folder || is_null($user)) {
 			return;
 		}
 		// check if our version manager supports setting the metadata
 		if ($this->versionManager instanceof IMetadataVersionBackend) {
-			$author = $this->userSession->getUser()->getDisplayName() ?? '';
+			$author = $user->getUID();
 			$this->versionManager->setMetadataValue($node, "author", $author);
 		}
 	}

apps/files_versions/lib/Sabre/Plugin.php

@@ -44,6 +44,8 @@ class Plugin extends ServerPlugin {
 
 	public const VERSION_LABEL = '{http://nextcloud.org/ns}version-label';
 
+	public const VERSION_AUTHOR = '{http://nextcloud.org/ns}version-author'; // dav property for author
+
 	public function __construct(
 		private IRequest $request,
 		private IPreview $previewManager,
@@ -93,6 +95,7 @@ public function afterGet(RequestInterface $request, ResponseInterface $response)
 	public function propFind(PropFind $propFind, INode $node): void {
 		if ($node instanceof VersionFile) {
 			$propFind->handle(self::VERSION_LABEL, fn () => $node->getLabel());
+			$propFind->handle(self::VERSION_AUTHOR, fn () => $node->getMetadataAuthor());
 			$propFind->handle(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, fn () => $this->previewManager->isMimeSupported($node->getContentType()));
 		}
 	}

apps/files_versions/lib/Sabre/VersionFile.php

@@ -27,6 +27,7 @@
 namespace OCA\Files_Versions\Sabre;
 
 use OCA\Files_Versions\Versions\IDeletableVersionBackend;
+use OCA\Files_Versions\Versions\IMetadataVersion;
 use OCA\Files_Versions\Versions\INameableVersion;
 use OCA\Files_Versions\Versions\INameableVersionBackend;
 use OCA\Files_Versions\Versions\IVersion;
@@ -109,6 +110,13 @@ public function setLabel($label): bool {
 		}
 	}
 
+	public function getMetadataAuthor(): string {
+		if ($this->version instanceof IMetadataVersion) {
+			return $this->version->getMetadataValue("author");
+		}
+		return '';
+	}
+
 	public function getLastModified(): int {
 		return $this->version->getTimestamp();
 	}

apps/files_versions/lib/Versions/Version.php

@@ -26,9 +26,10 @@
 namespace OCA\Files_Versions\Versions;
 
 use OCP\Files\FileInfo;
+use OCP\Files\Node;
 use OCP\IUser;
 
-class Version implements IVersion, INameableVersion {
+class Version implements IVersion, INameableVersion, IMetadataVersion {
 	/** @var int */
 	private $timestamp;
 
@@ -121,4 +122,11 @@ public function getVersionPath(): string {
 	public function getUser(): IUser {
 		return $this->user;
 	}
+
+	public function getMetadataValue(string $key): string {
+		if ($this->backend instanceof IMetadataVersionBackend && $this->sourceFileInfo instanceof Node) {
+			return $this->backend->getMetadataValue($this->sourceFileInfo, "author") ?? '';
+		}
+		return '';
+	}
 }

apps/files_versions/src/utils/davRequest.js

@@ -31,6 +31,7 @@ export default `<?xml version="1.0"?>
 		<d:getlastmodified />
 		<d:getetag />
 		<nc:version-label />
+		<nc:version-author />
 		<nc:has-preview />
 	</d:prop>
 </d:propfind>`