from typing import Tuple, Union

import flask


class LLMBackend:
    default_params: dict

    def handle_response(self, success, request: flask.Request, response: flask.Response, error_msg, client_ip, token, prompt, elapsed_time, parameters, headers):
        raise NotImplementedError

    def validate_params(self, params_dict: dict) -> Tuple[bool, str | None]:
        raise NotImplementedError

    # def get_model_info(self) -> Tuple[dict | bool, Exception | None]:
    #     raise NotImplementedError

    def get_parameters(self, parameters) -> Tuple[dict | None, str | None]:
        """
        Validate and return the parameters for this backend.
        Lets you set defaults for specific backends.
        :param parameters:
        :return:
        """
        raise NotImplementedError

    def validate_request(self, parameters: dict) -> (bool, Union[str, None]):
        raise NotImplementedError