text: """Support for Geofency."""
  import logging
  
  from aiohttp import web
  import voluptuous as vol
  
  from homeassistant.components.device_tracker import DOMAIN as DEVICE_TRACKER
  from homeassistant.const import (
      ATTR_LATITUDE, ATTR_LONGITUDE, ATTR_NAME, CONF_WEBHOOK_ID, HTTP_OK,
      HTTP_UNPROCESSABLE_ENTITY, STATE_NOT_HOME)
  from homeassistant.helpers import config_entry_flow
  import homeassistant.helpers.config_validation as cv
  from homeassistant.helpers.dispatcher import async_dispatcher_send
  from homeassistant.util import slugify
  
  _LOGGER = logging.getLogger(__name__)
  
  DOMAIN = 'geofency'
  CONF_MOBILE_BEACONS = 'mobile_beacons'
  
  CONFIG_SCHEMA = vol.Schema({
      vol.Optional(DOMAIN): vol.Schema({
          vol.Optional(CONF_MOBILE_BEACONS, default=[]): vol.All(
              cv.ensure_list, [cv.string]),
      }),
  }, extra=vol.ALLOW_EXTRA)
  
  ATTR_ADDRESS = 'address'
  ATTR_BEACON_ID = 'beaconUUID'
  ATTR_CURRENT_LATITUDE = 'currentLatitude'
  ATTR_CURRENT_LONGITUDE = 'currentLongitude'
  ATTR_DEVICE = 'device'
  ATTR_ENTRY = 'entry'
  
  BEACON_DEV_PREFIX = 'beacon'
  
  LOCATION_ENTRY = '1'
  LOCATION_EXIT = '0'
  
  TRACKER_UPDATE = '{}_tracker_update'.format(DOMAIN)
  
  
  def _address(value: str) -> str:
      r"""Coerce address by replacing '\n' with ' '."""
      return value.replace('\n', ' ')
  
  
  WEBHOOK_SCHEMA = vol.Schema({
      vol.Required(ATTR_ADDRESS): vol.All(cv.string, _address),
      vol.Required(ATTR_DEVICE): vol.All(cv.string, slugify),
      vol.Required(ATTR_ENTRY): vol.Any(LOCATION_ENTRY, LOCATION_EXIT),
      vol.Required(ATTR_LATITUDE): cv.latitude,
      vol.Required(ATTR_LONGITUDE): cv.longitude,
      vol.Required(ATTR_NAME): vol.All(cv.string, slugify),
      vol.Optional(ATTR_CURRENT_LATITUDE): cv.latitude,
      vol.Optional(ATTR_CURRENT_LONGITUDE): cv.longitude,
      vol.Optional(ATTR_BEACON_ID): cv.string,
  }, extra=vol.ALLOW_EXTRA)
  
  
  async def async_setup(hass, hass_config):
      """Set up the Geofency component."""
      config = hass_config.get(DOMAIN, {})
      mobile_beacons = config.get(CONF_MOBILE_BEACONS, [])
      hass.data[DOMAIN] = [slugify(beacon) for beacon in mobile_beacons]
      return True
  
  
  async def handle_webhook(hass, webhook_id, request):
      """Handle incoming webhook from Geofency."""
      try:
          data = WEBHOOK_SCHEMA(dict(await request.post()))
      except vol.MultipleInvalid as error:
          return web.Response(
              text=error.error_message,
              status=HTTP_UNPROCESSABLE_ENTITY
          )
  
      if _is_mobile_beacon(data, hass.data[DOMAIN]):
          return _set_location(hass, data, None)
      if data['entry'] == LOCATION_ENTRY:
          location_name = data['name']
      else:
          location_name = STATE_NOT_HOME
          if ATTR_CURRENT_LATITUDE in data:
              data[ATTR_LATITUDE] = data[ATTR_CURRENT_LATITUDE]
              data[ATTR_LONGITUDE] = data[ATTR_CURRENT_LONGITUDE]
  
      return _set_location(hass, data, location_name)
  
  
  def _is_mobile_beacon(data, mobile_beacons):
      """Check if we have a mobile beacon."""
      return ATTR_BEACON_ID in data and data['name'] in mobile_beacons
  
  
  def _device_name(data):
      """Return name of device tracker."""
      if ATTR_BEACON_ID in data:
          return "{}_{}".format(BEACON_DEV_PREFIX, data['name'])
      return data['device']
  
  
  def _set_location(hass, data, location_name):
      """Fire HA event to set location."""
      device = _device_name(data)
  
      async_dispatcher_send(
          hass, TRACKER_UPDATE, device,
          (data[ATTR_LATITUDE], data[ATTR_LONGITUDE]), location_name, data)
  
      return web.Response(
          text="Setting location for {}".format(device), status=HTTP_OK)
  
  
  async def async_setup_entry(hass, entry):
      """Configure based on config entry."""
      hass.components.webhook.async_register(
          DOMAIN, 'Geofency', entry.data[CONF_WEBHOOK_ID], handle_webhook)
  
      hass.async_create_task(
          hass.config_entries.async_forward_entry_setup(entry, DEVICE_TRACKER)
      )
      return True
  
  
  async def async_unload_entry(hass, entry):
      """Unload a config entry."""
      hass.components.webhook.async_unregister(entry.data[CONF_WEBHOOK_ID])
  
      await hass.config_entries.async_forward_entry_unload(entry, DEVICE_TRACKER)
      return True
  
  
  # pylint: disable=invalid-name
  async_remove_entry = config_entry_flow.webhook_async_remove_entry
  
  
  config_entry_flow.register_webhook_flow(
      DOMAIN,
      'Geofency Webhook',
      {
          'docs_url': 'https://www.home-assistant.io/components/geofency/'
      }
  )
  