from __future__ import annotations


from abc import ABCMeta, abstractmethod

from langchain.vectorstores import VectorStore


class BaseRetrieverService(metaclass=ABCMeta):
    def __init__(self, **kwargs):
        self.do_init(**kwargs)

    @abstractmethod
    def do_init(self, **kwargs):
        pass

    @abstractmethod
    def from_vectorstore(
        vectorstore: VectorStore,
        top_k: int,
        score_threshold: int | float,
    ):
        pass

    @abstractmethod
    def get_relevant_documents(self, query: str):
        pass