def handle_file_download()

in main.py [0:0]

• 20 lines of code
• 4 McCabe index (conditional complexity)

def handle_file_download(file_path: str):
    try:
        file_bytes = download_from_blob(file_path)
        if not file_bytes:
            return Response("File not found or empty.", status_code=404, media_type="text/plain")
    except Exception as e:
        error_message = str(e)
        status_code = 404 if "BlobNotFound" in error_message else 500
        logging.exception(f"[chainlit_app] Download error: {error_message}")
        return Response(
            f"{'Blob not found' if status_code == 404 else 'Internal server error'}: {error_message}.",
            status_code=status_code,
            media_type="text/plain"
        )
    
    actual_file_name = os.path.basename(file_path)
    return StreamingResponse(
        BytesIO(file_bytes),
        media_type="application/octet-stream",
        headers={"Content-Disposition": f'attachment; filename="{actual_file_name}"'}
    )