3D-Modelle Ordner + Dateianhang im Kalkulator

backend/src/tools/dateien/routes.js

@@ -198,6 +198,48 @@ router.post('/', authenticate, (req, res) => {
   });
 });
 
+// ── 3D-Modelle Hilfsendpoints ─────────────────────────────────────────────────
+
+// Stellt sicher dass ein Ordner existiert (Name + optionaler parent), gibt ihn zurück
+router.post('/ensure-folder', authenticate, (req, res) => {
+  const uid = req.user.id;
+  const { name, parent_id } = req.body;
+  if (!name?.trim()) return res.status(400).json({ error: 'Name erforderlich' });
+  const parentId = parent_id ? parseInt(parent_id) : null;
+
+  // Suche existierenden Ordner
+  const existing = parentId
+    ? db.prepare('SELECT * FROM folders WHERE user_id=? AND name=? AND parent_id=?').get(uid, name.trim(), parentId)
+    : db.prepare('SELECT * FROM folders WHERE user_id=? AND name=? AND parent_id IS NULL').get(uid, name.trim());
+
+  if (existing) return res.json(enrichFolder(existing));
+
+  const r = db.prepare('INSERT INTO folders (user_id,name,parent_id) VALUES (?,?,?)').run(uid, name.trim(), parentId);
+  res.json(enrichFolder(db.prepare('SELECT * FROM folders WHERE id=?').get(r.lastInsertRowid)));
+});
+
+// Upload 3D-Dateien (ohne Ext-Beschränkung, für den Kalkulator)
+const upload3d = multer({
+  storage,
+  limits: { fileSize: parseInt(process.env.MAX_3D_SIZE_MB || '200') * 1024 * 1024 },
+});
+
+router.post('/upload-3d', authenticate, (req, res) => {
+  upload3d.array('files', 20)(req, res, err => {
+    if (err) return res.status(400).json({ error: err.message });
+    if (!req.files?.length) return res.status(400).json({ error: 'Keine Dateien' });
+    const uid      = req.user.id;
+    const folderId = req.body.folder_id ? parseInt(req.body.folder_id) : null;
+    const inserted = [];
+    for (const f of req.files) {
+      const r = db.prepare('INSERT INTO files (user_id,filename,originalname,mimetype,size,folder_id) VALUES (?,?,?,?,?,?)')
+        .run(uid, f.filename, f.originalname, f.mimetype || 'application/octet-stream', f.size, folderId);
+      inserted.push(r.lastInsertRowid);
+    }
+    res.json({ uploaded: inserted.length });
+  });
+});
+
 router.get('/storage', authenticate, (req, res) => {
   const uid  = req.user.id;
   const used = db.prepare('SELECT COALESCE(SUM(size),0) AS s FROM files WHERE user_id=?').get(uid).s;