from abc import ABC, abstractmethod
from typing import Dict, Optional


class LCInterface(ABC):
    @abstractmethod
    def execution(self):
        """Method execution LLM model based on HuggingFace or Langchain"""
        pass

    # {"model_name": "./models/model_name"}
    @abstractmethod
    def clear_llm(self, unused_model_dict: Optional[Dict[str, str]], current_lc: str) -> None:
        """Method clear unused LLM"""
        pass

    @abstractmethod
    def get_unused(self, current_lc: str) -> Optional[Dict[str, str]]:
        """Method getting LLM that unused and forming corresponding dict"""
        pass