coordinator.py

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"""DataUpdateCoordinator for Elgato."""
 
from dataclasses import dataclass
 
from elgato import BatteryInfo, Elgato, ElgatoConnectionError, Info, Settings, State
 
from homeassistant.config_entries import ConfigEntry
from homeassistant.const import CONF_HOST, CONF_PORT
from homeassistant.core import HomeAssistant
from homeassistant.helpers.aiohttp_client import async_get_clientsession
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
from .const import DOMAIN, LOGGER, SCAN_INTERVAL
 
 
@dataclass
class ElgatoData:
    """Elgato data stored in the DataUpdateCoordinator."""
 
    battery: BatteryInfo | None
    info: Info
    settings: Settings
    state: State
 
 
class ElgatoDataUpdateCoordinator(DataUpdateCoordinator[ElgatoData]):
    """Class to manage fetching Elgato data."""
 
    config_entry: ConfigEntry
    has_battery: bool | None = None
 
    def __init__(self, hass: HomeAssistant, entry: ConfigEntry) -> None:
        """Initialize the coordinator."""
        self.config_entryconfig_entryconfig_entry = entry
        self.clientclient = Elgato(
            entry.data[CONF_HOST],
            port=entry.data[CONF_PORT],
            session=async_get_clientsession(hass),
        )
        super().__init__(
            hass,
            LOGGER,
            name=f"{DOMAIN}_{entry.data[CONF_HOST]}",
            update_interval=SCAN_INTERVAL,
        )
 
    async def _async_update_data(self) -> ElgatoData:
        """Fetch data from the Elgato device."""
        try:
            if self.has_batteryhas_battery is None:
                self.has_batteryhas_battery = await self.clientclient.has_battery()
 
            return ElgatoData(
                battery=await self.clientclient.battery() if self.has_batteryhas_battery else None,
                info=await self.clientclient.info(),
                settings=await self.clientclient.settings(),
                state=await self.clientclient.state(),
            )
        except ElgatoConnectionError as err:
            raise UpdateFailed(err) from err