class TokenCompletationTransformer:

    def __init__(self,SOTL_token,EOS_token, input_percent:float = 0.5) -> None:
        self.__SOTL_token = SOTL_token
        self.__EOS_token = EOS_token
        self.__input_percent = input_percent
        pass


    def get_completation_tuple(
        self,
        token_sequence: list[int],
    )-> tuple[list[int], list[int]]:
        
        # split the sequence by encoded(<SOTL>), dont take the first, firts pertenge in as X the other as Y
        sotl_count =int( token_sequence.count(self.__SOTL_token) * self.__input_percent)

        sotl_index = 0
        percent_index = 0
        while sotl_index < sotl_count:
            token = token_sequence[percent_index]
            if token == self.__SOTL_token:
                sotl_index += 1

            percent_index+=1

        percent_index = percent_index -1
        x_list = token_sequence[:percent_index] 
        x_list.append(self.__EOS_token)
        y_list = token_sequence[percent_index:]
        return (x_list,y_list)