from pydantic_settings import BaseSettings
from functools import lru_cache


class Settings(BaseSettings):
    admin_email: str = "admin@smartup.local"
    admin_password: str = ""
    jwt_secret: str = ""
    jwt_expire_hours: int = 24
    cors_origins: str = "http://localhost:8899,http://127.0.0.1:8899"
    login_rate_limit_attempts: int = 5
    login_rate_limit_window_seconds: int = 300
    snapshot_retention_count: int = 500
    database_url: str = "sqlite:////app/data/app.db"
    tz: str = "Asia/Shanghai"
    # consecutive failures before upstream goes unhealthy
    unhealthy_threshold: int = 3

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

    model_config = {"env_file": ".env", "case_sensitive": False, "extra": "ignore"}


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