from functools import lru_cache

from pydantic_settings import BaseSettings, SettingsConfigDict


class Settings(BaseSettings):
    model_config = SettingsConfigDict(env_file=".env", extra="ignore")

    # Database
    database_url: str = "postgresql+psycopg2://pantry:pantry@localhost:5432/pantry"

    # Auth / JWT
    jwt_secret: str = "change-me-in-production"
    jwt_algorithm: str = "HS256"
    jwt_expire_minutes: int = 60 * 24 * 7  # 7 days

    # First admin, created on startup if no users exist
    admin_username: str = "admin"
    admin_password: str = "changeme"

    # Open Food Facts
    off_base_url: str = "https://world.openfoodfacts.org"
    off_timeout_seconds: float = 8.0

    # Behaviour
    expiry_warning_days_default: int = 7

    # CORS (comma separated); "*" allows all
    cors_origins: str = "*"


@lru_cache
def get_settings() -> Settings:
    return Settings()