feat: WebDAV Sync mit vollständiger Ordnerstruktur (user/ordner/unterordner/datei)

backend/src/routes/admin.js

@@ -236,11 +236,28 @@ router.post('/webdav/sync', authenticate, requireAdmin, async (req, res) => {
   const cfg = webdav.getConfig();
   if (!cfg.enabled) return res.status(400).json({ error: 'WebDAV nicht aktiviert' });
 
-  // Alle Dateien aus DB holen mit Username
+  // Ordnerpfad rekursiv aus DB auflösen
+  function getFolderPath(folderId) {
+    if (!folderId) return '';
+    const parts = [];
+    let current = folderId;
+    const visited = new Set();
+    while (current) {
+      if (visited.has(current)) break;
+      visited.add(current);
+      const folder = db.prepare('SELECT id, name, parent_id FROM folders WHERE id=?').get(current);
+      if (!folder) break;
+      parts.unshift(folder.name.replace(/[/\\]/g, '_'));
+      current = folder.parent_id;
+    }
+    return parts.join('/');
+  }
+
+  // Alle Dateien aus DB holen mit Username und folder_id
   const files = db.prepare(`
     SELECT f.*, u.username FROM files f
     JOIN users u ON u.id = f.user_id
-    ORDER BY f.user_id, f.id
+    ORDER BY f.user_id, f.folder_id, f.id
   `).all();
 
   const results = { ok: 0, failed: 0, errors: [] };
@@ -254,7 +271,11 @@ router.post('/webdav/sync', authenticate, requireAdmin, async (req, res) => {
     }
     try {
       const buf = fs.readFileSync(localPath);
-      const davPath = webdav.userPath(cfg, file.username) + '/' + file.originalname;
+      const folderPath = getFolderPath(file.folder_id);
+      const userBase   = webdav.userPath(cfg, file.username);
+      const davPath    = folderPath
+        ? `${userBase}/${folderPath}/${file.originalname}`
+        : `${userBase}/${file.originalname}`;
       await webdav.uploadFile(buf, davPath, file.mimetype || 'application/octet-stream');
       results.ok++;
     } catch(e) {