perf: Get readme from folder

Directly get all markdown files from parent directory in one SQL query
and then filter on it by name.

Signed-off-by: Carl Schwan <carlschwan@kde.org>

Author: CarlSchwan

lib/DAV/WorkspacePlugin.php

@@ -10,7 +10,6 @@
 
 use Exception;
 use OC\Files\Node\File;
-use OCA\DAV\Connector\Sabre\Directory;
 use OCA\DAV\Files\FilesHome;
 use OCA\Text\Service\ConfigService;
 use OCA\Text\Service\WorkspaceService;
@@ -64,7 +63,7 @@ public function propFind(PropFind $propFind, INode $node) {
 			return;
 		}
 
-		if (!$node instanceof Directory && !$node instanceof FilesHome) {
+		if (!$node instanceof FilesHome) {
 			return;
 		}
 

lib/Service/WorkspaceService.php

@@ -10,9 +10,6 @@
 
 use OCP\Files\File;
 use OCP\Files\Folder;
-use OCP\Files\NotFoundException;
-use OCP\Files\NotPermittedException;
-use OCP\Files\StorageInvalidException;
 use OCP\IL10N;
 
 class WorkspaceService {
@@ -28,14 +25,13 @@ public function __construct(
 	}
 
 	public function getFile(Folder $folder): ?File {
-		foreach ($this->getSupportedFilenames() as $filename) {
-			try {
-				$file = $folder->get($filename);
+		$content = $folder->getStorage()->getCache()->getFolderContents($folder->getInternalPath() . '/', 'text/markdown');
+		foreach ($content as $file) {
+			if (in_array($file->getName(), $this->getSupportedFilenames(), true)) {
+				$file = $folder->get($file->getPath());
 				if ($file instanceof File) {
 					return $file;
 				}
-			} catch (NotFoundException|NotPermittedException|StorageInvalidException) {
-				continue;
 			}
 		}
 		return null;