def METHOD_NAME(file_path: str) -> Tuple[str]:
    """
    A function to get archive type if the file exists.
    """
    archive_type, compression_type = None, None
    if zipfile.is_zipfile(file_path):
        archive_type = "zip"
    if tarfile.is_tarfile(file_path):
        archive_type = "tar"
        compression_type = mimetypes.guess_type(file_path)[1]
    return archive_type, compression_type