from typing import List, Optional

import litellm
from litellm.llms.base_llm.base_utils import BaseLLMModelInfo
from litellm.secret_managers.main import get_secret_str


class GeminiModelInfo(BaseLLMModelInfo):
    @staticmethod
    def get_api_base(api_base: Optional[str] = None) -> Optional[str]:
        return (
            api_base
            or get_secret_str("GEMINI_API_BASE")
            or "https://generativelanguage.googleapis.com/v1beta"
        )

    @staticmethod
    def get_api_key(api_key: Optional[str] = None) -> Optional[str]:
        return api_key or (get_secret_str("GEMINI_API_KEY"))

    @staticmethod
    def get_base_model(model: str) -> Optional[str]:
        return model.replace("gemini/", "")

    def get_models(
        self, api_key: Optional[str] = None, api_base: Optional[str] = None
    ) -> List[str]:
        api_base = GeminiModelInfo.get_api_base(api_base)
        api_key = GeminiModelInfo.get_api_key(api_key)
        if api_base is None or api_key is None:
            raise ValueError(
                "GEMINI_API_BASE or GEMINI_API_KEY is not set. Please set the environment variable, to query Gemini's `/models` endpoint."
            )

        response = litellm.module_level_client.get(
            url=f"{api_base}/models?key={api_key}",
        )

        if response.status_code != 200:
            raise ValueError(
                f"Failed to fetch models from Gemini. Status code: {response.status_code}, Response: {response.json()}"
            )

        models = response.json()["models"]

        litellm_model_names = []
        for model in models:
            stripped_model_name = model["name"].strip("models/")
            litellm_model_name = "gemini/" + stripped_model_name
            litellm_model_names.append(litellm_model_name)
        return litellm_model_names
