"""Utils for CO2 signal."""
from __future__ import annotations

from homeassistant.const import CONF_LATITUDE, CONF_LONGITUDE
from homeassistant.core import HomeAssistant

from .const import CONF_COUNTRY_CODE


def get_extra_name(hass: HomeAssistant, config: dict) -> str | None:
    """Return the extra name describing the location if not home."""
    if CONF_COUNTRY_CODE in config:
        return config[CONF_COUNTRY_CODE]

    if CONF_LATITUDE in config:
        return f"{round(config[CONF_LATITUDE], 2)}, {round(config[CONF_LONGITUDE], 2)}"

    return None