from datetime import timedelta
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity import DeviceInfo
from zigpy import types
import logging

from .const import DOMAIN

_LOGGER = logging.getLogger(__name__)

class LinkyTarifCoordinator(DataUpdateCoordinator):
    def __init__(self, hass: HomeAssistant, ieee: str, interval: int):
        super().__init__(
            hass,
            _LOGGER,
            name="Linky Tarif Coordinator",
            update_interval=timedelta(seconds=interval),
        )
        self._ieee = ieee

    async def _async_update_data(self):
        zha_storage = self.hass.data["zha"]
        app_ctrl = zha_storage.gateway.application

        device = app_ctrl.get_device(types.EUI64.convert(self._ieee))
        if not device:
            raise UpdateFailed(f"Device with IEEE {self._ieee} not found")

        endpoint = device.endpoints.get(1)
        if not endpoint:
            raise UpdateFailed("Endpoint 1 not found")

        cluster = endpoint[0xFF66]
        if not cluster:
            raise UpdateFailed("Cluster 0xFF66 not found")

        try:
            res = await cluster.read_attributes([0x0010])
            value = res.get(0x0010)
            return {
                "tariff": value,
                "last_update": self.hass.helpers.event.dt_util.utcnow().isoformat(),
            }
        except Exception as e:
            raise UpdateFailed(f"Error reading tariff: {e}")