fix: drives

backend/src/drives.py

@@ -27,7 +27,7 @@ async def upload_file(user_id, drive_name, filename, stream, mime_type=None):
         drive = await db.Drive.create(user_id=user_id, name=drive_name)
 
     # Check collision
-    if await db.Drive.get_or_none(drive_id=drive.id, filename=filename):
+    if await db.DriveFile.get_or_none(drive_id=drive.id, filename=filename):
         raise Exception("Duplicated file")
     
     # 2. Prepare disk path
@@ -82,7 +82,7 @@ async def delete_file(file_id):
     return abs_path
 
 async def resolve_file(user_id, drive_name, filename):
-    """Resolve file to absolute disk path after permission check. Returns (path, mime)."""
+    """Resolve file to absolute disk path after permission check. Returns (abs_path, file.id)."""
     # Eager load drive and verify ownership
     drive = await db.Drive.get_or_none(user_id=user_id, name=drive_name)
     if drive.user_id != user_id: