coordinator.py

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"""The OurGroceries coordinator."""
 
from __future__ import annotations
 
import asyncio
from datetime import timedelta
import logging
 
from ourgroceries import OurGroceries
 
from homeassistant.core import HomeAssistant
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator
 
from .const import DOMAIN
 
SCAN_INTERVAL = 60
 
_LOGGER = logging.getLogger(__name__)
 
 
class OurGroceriesDataUpdateCoordinator(DataUpdateCoordinator[dict[str, dict]]):
    """Class to manage fetching OurGroceries data."""
 
    def __init__(self, hass: HomeAssistant, og: OurGroceries) -> None:
        """Initialize global OurGroceries data updater."""
        self.ogog = og
        self.listslists: list[dict] = []
        self._cache: dict[str, dict] = {}
        interval = timedelta(seconds=SCAN_INTERVAL)
        super().__init__(
            hass,
            _LOGGER,
            name=DOMAIN,
            update_interval=interval,
        )
 
    async def _update_list(self, list_id: str, version_id: str) -> None:
        old_version = self._cache.get(list_id, {}).get("list", {}).get("versionId", "")
        if old_version == version_id:
            return
        self._cache[list_id] = await self.ogog.get_list_items(list_id=list_id)
 
    async def _async_update_data(self) -> dict[str, dict]:
        """Fetch data from OurGroceries."""
        self.listslists = (await self.ogog.get_my_lists())["shoppingLists"]
        await asyncio.gather(
            *[self._update_list_update_list(sl["id"], sl["versionId"]) for sl in self.listslists]
        )
        return self._cache