"""asf-ai settings surface (minimal; extensible)."""

from __future__ import annotations

from functools import lru_cache
from pydantic_settings import BaseSettings, SettingsConfigDict


class AISettings(BaseSettings):
    mongo_uri: str = "mongodb://172.19.40.102:27017,172.19.40.103:27017/asf?replicaSet=rs0"
    mongo_db: str = "asf"

    default_provider: str = "mock"

    # Provider-specific (optional — only required if the chosen provider is used)
    openai_api_key: str | None = None
    anthropic_api_key: str | None = None
    nvidia_api_key: str | None = None

    model_config = SettingsConfigDict(
        env_file=".env",
        env_file_encoding="utf-8",
        extra="ignore",
    )


@lru_cache(maxsize=1)
def get_settings() -> AISettings:
    return AISettings()