"""Xiaoxiang Smart BMS — Home Assistant integration."""
from __future__ import annotations

from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant

from .const import CONF_ADDRESS, CONF_POLL_INTERVAL, DEFAULT_POLL_INTERVAL, DOMAIN
from .coordinator import BmsCoordinator

PLATFORMS = ["sensor"]


async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Set up the BMS integration from a config entry."""
    address = entry.data[CONF_ADDRESS]
    poll_interval = entry.options.get(CONF_POLL_INTERVAL, DEFAULT_POLL_INTERVAL)

    coordinator = BmsCoordinator(hass, address, poll_interval)
    await coordinator.async_setup()
    await coordinator.async_config_entry_first_refresh()

    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)

    # Reload the entry when options (e.g. poll interval) change
    entry.async_on_unload(entry.add_update_listener(_async_update_listener))

    return True


async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
    """Unload the BMS integration."""
    unload_ok = await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
    if unload_ok:
        coordinator: BmsCoordinator = hass.data[DOMAIN].pop(entry.entry_id)
        await coordinator.async_teardown()
    return unload_ok


async def _async_update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
    """Reload the entry when options are changed."""
    await hass.config_entries.async_reload(entry.entry_id)