Fix

fastapi_file_server/app/services/file_uploader.py

@@ -65,7 +65,10 @@ class FileUploader:
         wrapped = Wrapper(self.file.file, self.file.filename)
 
         data = await storage.upload(
-            wrapped, file_size=self.file_size, caption=self.caption
+            wrapped,
+            file_size=self.file_size,
+            filename=self.file.filename,
+            caption=self.caption,
         )
 
         if not data:

fastapi_file_server/app/services/storages.py

@@ -22,11 +22,14 @@ class BaseStorage:
     async def upload(
         self,
         file: telethon.hints.FileLike,
+        filename: str,
         file_size: int,
         caption: Optional[str] = None,
     ) -> Optional[tuple[int, int]]:
         try:
-            uploaded_file = await self.client.upload_file(file, file_size=file_size)
+            uploaded_file = await self.client.upload_file(
+                file, file_size=file_size, file_name=filename
+            )
 
             if caption:
                 message = await self.client.send_file(