import os


class Settings:
    def __init__(self):
        self.healthie_api_key = os.environ.get("HEALTHIE_API_KEY", "")
        self.healthie_api_base_url = os.environ.get("HEALTHIE_API_BASE_URL", "")
        self.form_template_id = os.environ.get("FORM_TEMPLATE_ID", "2360739")
        self.recaptcha_site_key = os.environ.get("RECAPTCHA_SITE_KEY", "")
        self.recaptcha_secret_key = os.environ.get("RECAPTCHA_SECRET_KEY", "")
        self.rate_limit_max = int(os.environ.get("RATE_LIMIT_MAX", "5"))
        self.rate_limit_window = int(os.environ.get("RATE_LIMIT_WINDOW", "3600"))
        self.form_timeout = int(os.environ.get("FORM_TIMEOUT", "1800"))
        self.refresh_interval = int(os.environ.get("REFRESH_INTERVAL", "300"))
        self.upload_max_bytes = int(
            os.environ.get("UPLOAD_MAX_BYTES", str(10 * 1024 * 1024))
        )
        self.max_uploads_per_session = int(os.environ.get("MAX_UPLOADS_PER_SESSION", "5"))
        self.debug = os.environ.get("DEBUG", "").lower() in ("true", "1", "yes")


_settings = None


def settings() -> Settings:
    global _settings
    if _settings is None:
        _settings = Settings()
    return _settings