Function _validate_chat_file_upload

Scripts/ButSystem.py:17291–17295

Validate a chat attachment (DM/group file/gif) and return (filename, mime).

(file_storage)

            resp = Response(gen, mimetype=mime)
            resp.headers["Content-Disposition"] = f'attachment; filename="{filename}"'
        else:
            from flask import send_file
            resp = send_file(
                sp,
                mimetype=mime,
                as_attachment=True,
                download_name=filename,
                conditional=True,