text: """Helpers that help with state related things."""
  import asyncio
  import datetime as dt
  import json
  import logging
  from collections import defaultdict
  from types import TracebackType
  from typing import (  # noqa: F401 pylint: disable=unused-import
      Awaitable, Dict, Iterable, List, Optional, Tuple, Type, Union)
  
  from homeassistant.loader import bind_hass
  import homeassistant.util.dt as dt_util
  from homeassistant.components.notify import (
      ATTR_MESSAGE, SERVICE_NOTIFY)
  from homeassistant.components.sun import (
      STATE_ABOVE_HORIZON, STATE_BELOW_HORIZON)
  from homeassistant.components.mysensors.switch import (
      ATTR_IR_CODE, SERVICE_SEND_IR_CODE)
  from homeassistant.components.cover import (
      ATTR_POSITION, ATTR_TILT_POSITION)
  from homeassistant.const import (
      ATTR_ENTITY_ID, ATTR_OPTION, SERVICE_ALARM_ARM_AWAY,
      SERVICE_ALARM_ARM_HOME, SERVICE_ALARM_DISARM, SERVICE_ALARM_TRIGGER,
      SERVICE_LOCK, SERVICE_TURN_OFF, SERVICE_TURN_ON, SERVICE_UNLOCK,
      SERVICE_OPEN_COVER,
      SERVICE_CLOSE_COVER, SERVICE_SET_COVER_POSITION,
      SERVICE_SET_COVER_TILT_POSITION, STATE_ALARM_ARMED_AWAY,
      STATE_ALARM_ARMED_HOME, STATE_ALARM_DISARMED, STATE_ALARM_TRIGGERED,
      STATE_CLOSED, STATE_HOME, STATE_LOCKED, STATE_NOT_HOME, STATE_OFF,
      STATE_ON, STATE_OPEN, STATE_UNKNOWN,
      STATE_UNLOCKED, SERVICE_SELECT_OPTION)
  from homeassistant.core import (
      Context, State, DOMAIN as HASS_DOMAIN)
  from homeassistant.util.async_ import run_coroutine_threadsafe
  from .typing import HomeAssistantType
  
  _LOGGER = logging.getLogger(__name__)
  
  GROUP_DOMAIN = 'group'
  
  # Update this dict of lists when new services are added to HA.
  # Each item is a service with a list of required attributes.
  SERVICE_ATTRIBUTES = {
      SERVICE_NOTIFY: [ATTR_MESSAGE],
      SERVICE_SEND_IR_CODE: [ATTR_IR_CODE],
      SERVICE_SELECT_OPTION: [ATTR_OPTION],
      SERVICE_SET_COVER_POSITION: [ATTR_POSITION],
      SERVICE_SET_COVER_TILT_POSITION: [ATTR_TILT_POSITION]
  }
  
  # Update this dict when new services are added to HA.
  # Each item is a service with a corresponding state.
  SERVICE_TO_STATE = {
      SERVICE_TURN_ON: STATE_ON,
      SERVICE_TURN_OFF: STATE_OFF,
      SERVICE_ALARM_ARM_AWAY: STATE_ALARM_ARMED_AWAY,
      SERVICE_ALARM_ARM_HOME: STATE_ALARM_ARMED_HOME,
      SERVICE_ALARM_DISARM: STATE_ALARM_DISARMED,
      SERVICE_ALARM_TRIGGER: STATE_ALARM_TRIGGERED,
      SERVICE_LOCK: STATE_LOCKED,
      SERVICE_UNLOCK: STATE_UNLOCKED,
      SERVICE_OPEN_COVER: STATE_OPEN,
      SERVICE_CLOSE_COVER: STATE_CLOSED
  }
  
  
  class AsyncTrackStates:
      """
      Record the time when the with-block is entered.
  
      Add all states that have changed since the start time to the return list
      when with-block is exited.
  
      Must be run within the event loop.
      """
  
      def __init__(self, hass: HomeAssistantType) -> None:
          """Initialize a TrackStates block."""
          self.hass = hass
          self.states = []  # type: List[State]
  
      # pylint: disable=attribute-defined-outside-init
      def __enter__(self) -> List[State]:
          """Record time from which to track changes."""
          self.now = dt_util.utcnow()
          return self.states
  
      def __exit__(self, exc_type: Optional[Type[BaseException]],
                   exc_value: Optional[BaseException],
                   traceback: Optional[TracebackType]) -> None:
          """Add changes states to changes list."""
          self.states.extend(get_changed_since(self.hass.states.async_all(),
                                               self.now))
  
  
  def get_changed_since(states: Iterable[State],
                        utc_point_in_time: dt.datetime) -> List[State]:
      """Return list of states that have been changed since utc_point_in_time."""
      return [state for state in states
              if state.last_updated >= utc_point_in_time]
  
  
  @bind_hass
  def reproduce_state(hass: HomeAssistantType,
                      states: Union[State, Iterable[State]],
                      blocking: bool = False) -> None:
      """Reproduce given state."""
      return run_coroutine_threadsafe(  # type: ignore
          async_reproduce_state(hass, states, blocking), hass.loop).result()
  
  
  @bind_hass
  async def async_reproduce_state(
          hass: HomeAssistantType,
          states: Union[State, Iterable[State]],
          blocking: bool = False,
          context: Optional[Context] = None) -> None:
      """Reproduce a list of states on multiple domains."""
      if isinstance(states, State):
          states = [states]
  
      to_call = defaultdict(list)  # type: Dict[str, List[State]]
  
      for state in states:
          to_call[state.domain].append(state)
  
      async def worker(domain: str, data: List[State]) -> None:
          component = getattr(hass.components, domain)
          if hasattr(component, 'async_reproduce_states'):
              await component.async_reproduce_states(
                  data,
                  context=context)
          else:
              await async_reproduce_state_legacy(
                  hass,
                  domain,
                  data,
                  blocking=blocking,
                  context=context)
  
      if to_call:
          # run all domains in parallel
          await asyncio.gather(*[
              worker(domain, data)
              for domain, data in to_call.items()
          ])
  
  
  @bind_hass
  async def async_reproduce_state_legacy(
          hass: HomeAssistantType,
          domain: str,
          states: Iterable[State],
          blocking: bool = False,
          context: Optional[Context] = None) -> None:
      """Reproduce given state."""
      to_call = defaultdict(list)  # type: Dict[Tuple[str, str], List[str]]
  
      if domain == GROUP_DOMAIN:
          service_domain = HASS_DOMAIN
      else:
          service_domain = domain
  
      for state in states:
  
          if hass.states.get(state.entity_id) is None:
              _LOGGER.warning("reproduce_state: Unable to find entity %s",
                              state.entity_id)
              continue
  
          domain_services = hass.services.async_services().get(service_domain)
  
          if not domain_services:
              _LOGGER.warning(
                  "reproduce_state: Unable to reproduce state %s (1)", state)
              continue
  
          service = None
          for _service in domain_services.keys():
              if (_service in SERVICE_ATTRIBUTES and
                      all(attr in state.attributes
                          for attr in SERVICE_ATTRIBUTES[_service]) or
                      _service in SERVICE_TO_STATE and
                      SERVICE_TO_STATE[_service] == state.state):
                  service = _service
              if (_service in SERVICE_TO_STATE and
                      SERVICE_TO_STATE[_service] == state.state):
                  break
  
          if not service:
              _LOGGER.warning(
                  "reproduce_state: Unable to reproduce state %s (2)", state)
              continue
  
          # We group service calls for entities by service call
          # json used to create a hashable version of dict with maybe lists in it
          key = (service,
                 json.dumps(dict(state.attributes), sort_keys=True))
          to_call[key].append(state.entity_id)
  
      domain_tasks = []  # type: List[Awaitable[Optional[bool]]]
      for (service, service_data), entity_ids in to_call.items():
          data = json.loads(service_data)
          data[ATTR_ENTITY_ID] = entity_ids
  
          domain_tasks.append(
              hass.services.async_call(service_domain, service, data, blocking,
                                       context)
          )
  
      if domain_tasks:
          await asyncio.wait(domain_tasks)
  
  
  def state_as_number(state: State) -> float:
      """
      Try to coerce our state to a number.
  
      Raises ValueError if this is not possible.
      """
      from homeassistant.components.climate.const import (
          STATE_HEAT, STATE_COOL, STATE_IDLE)
  
      if state.state in (STATE_ON, STATE_LOCKED, STATE_ABOVE_HORIZON,
                         STATE_OPEN, STATE_HOME, STATE_HEAT, STATE_COOL):
          return 1
      if state.state in (STATE_OFF, STATE_UNLOCKED, STATE_UNKNOWN,
                         STATE_BELOW_HORIZON, STATE_CLOSED, STATE_NOT_HOME,
                         STATE_IDLE):
          return 0
  
      return float(state.state)
  