"""signal_alert."""

from __future__ import annotations

import logging
from os import getenv

from apprise import Apprise

logger = logging.getLogger(__name__)


def signal_alert(body: str, title: str = "") -> None:
    """Send a signal alert.

    Args:
        body (str): The body of the alert.
        title (str, optional): The title of the alert. Defaults to "".
    """
    apprise_client = Apprise()

    from_phone = getenv("SIGNAL_ALERT_FROM_PHONE")
    to_phone = getenv("SIGNAL_ALERT_TO_PHONE")
    if not from_phone or not to_phone:
        logger.info("SIGNAL_ALERT_FROM_PHONE or SIGNAL_ALERT_TO_PHONE not set")
        return

    apprise_client.add(f"signal://localhost:8989/{from_phone}/{to_phone}")

    apprise_client.notify(title=title, body=body)