# coding=utf-8
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# Licensed under the Apache License, Version 2.0 (the "License");
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#     http://www.apache.org/licenses/LICENSE-2.0
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from abc import abstractmethod, ABCMeta


class Chat(metaclass=ABCMeta):
    @abstractmethod
    def chat(self, instruction: list, history: list) -> list:
        """
        大语言模型对话接口，输入指令和历史对话, 给出新的模型输出
        :param instruction: 当前指令
        :param history: 历史对话
        :return: 模型输出
        """
        raise NotImplementedError

    @abstractmethod
    def beam_search_chat(self, instruction: str, history: list) -> str:
        """
        大语言模型beam search对话接口，输入指令和历史对话, 给出新的模型输出
        :param instruction: 当前指令
        :param history: 历史对话
        :return: 模型输出
        """
        raise NotImplementedError