import os
from dataclasses import dataclass


@dataclass(frozen=True)
class Settings:
    app_name: str
    database_url: str
    operator_name: str
    operator_email: str
    operator_password: str

    @classmethod
    def from_env(cls) -> "Settings":
        return cls(
            app_name=os.getenv("APP_NAME", "Data Entry App API"),
            database_url=os.getenv("DATABASE_URL", "sqlite:///./data_entry_app.db"),
            operator_name=os.getenv("OPERATOR_NAME", "Operations Manager"),
            operator_email=os.getenv("OPERATOR_EMAIL", "operator@example.com"),
            operator_password=os.getenv("OPERATOR_PASSWORD", "changeme"),
        )


settings = Settings.from_env()