Update app.py

app.py

@@ -6,6 +6,7 @@ from pathlib import Path
 from typing import Optional, Dict, Any
 import json
 from datetime import datetime
+import aiofiles
 
 class MiddlewareClient:
     def __init__(self, base_url: str = "https://fred808-vssee.hf.space"):
@@ -90,9 +91,8 @@ class MiddlewareClient:
             print(f"Error releasing image {file_id}: {e}")
 
     async def download_file(self, course: str, file_id: str) -> bool:
-        """Download a file to local storage"""
         save_path = self.download_dir / course / file_id
-        save_path.parent.mkdir(exist_ok=True)
+        save_path.parent.mkdir(parents=True, exist_ok=True)
         
         try:
             response = await self.client.get(
@@ -103,13 +103,14 @@ class MiddlewareClient:
             
             self.stats["downloads_started"] += 1
             
-            async with await aiofiles.open(save_path, 'wb') as f:
+            async with aiofiles.open(save_path, 'wb') as f:
                 async for chunk in response.aiter_bytes():
                     await f.write(chunk)
                     self.stats["bytes_downloaded"] += len(chunk)
             
             self.stats["downloads_completed"] += 1
             return True
+            return True
             
         except Exception as e:
             print(f"Error downloading {file_id}: {e}")