backend/app/config.py

from __future__ import annotations

from pathlib import Path

from pydantic_settings import BaseSettings

_PROJECT_ROOT = Path(__file__).resolve().parent.parent.parent
_ENV_FILE = _PROJECT_ROOT / ".env"


class Settings(BaseSettings):
    """Minimal app settings for the Decidron simulator.

    The deterministic simulator needs no LLM provider credentials; the
    only configurable surface today is CORS for local dev where the CRA
    dev server (:3000) talks to the FastAPI backend (:7860).
    """

    cors_origins: str = "http://localhost:3000,http://localhost:7860"

    model_config = {"env_file": str(_ENV_FILE), "env_file_encoding": "utf-8"}

    @property
    def cors_origin_list(self) -> list[str]:
        return [o.strip() for o in self.cors_origins.split(",") if o.strip()]


settings = Settings()