fix(GroupFoldersHome): Show all leaf groupfolders

Signed-off-by: provokateurin <kate@provokateurin.de>

Author: provokateurin

lib/DAV/GroupFoldersHome.php

@@ -10,6 +10,7 @@
 
 use OC\Files\Filesystem;
 use OCA\GroupFolders\Folder\FolderDefinition;
+use OCA\GroupFolders\Folder\FolderDefinitionWithPermissions;
 use OCA\GroupFolders\Folder\FolderManager;
 use OCP\Files\IRootFolder;
 use OCP\IUser;
@@ -103,10 +104,18 @@ public function getChildren(): array {
 
 		$folders = $this->folderManager->getFoldersForUser($this->user);
 
-		// Filter out non top-level folders
-		$folders = array_filter($folders, fn (FolderDefinition $folder): bool => !str_contains($folder->mountPoint, '/'));
+		usort($folders, static fn (FolderDefinitionWithPermissions $a, FolderDefinitionWithPermissions $b): int => $a->mountPoint <=> $b->mountPoint);
 
-		return array_map($this->getDirectoryForFolder(...), $folders);
+		$current = '';
+		$leafFolders = [];
+		foreach ($folders as $folder) {
+			if (!str_starts_with($folder->mountPoint, $current . '/')) {
+				$leafFolders[] = $folder;
+				$current = $folder->mountPoint;
+			}
+		}
+
+		return array_map($this->getDirectoryForFolder(...), $leafFolders);
 	}
 
 	#[\Override]