core/homeassistant/components/bthome/event.py

132 lines
4.5 KiB
Python

"""Support for bthome event entities."""
from __future__ import annotations
from dataclasses import replace
from homeassistant.components.event import (
EventDeviceClass,
EventEntity,
EventEntityDescription,
)
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers import device_registry as dr, entity_registry as er
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from . import format_discovered_event_class, format_event_dispatcher_name
from .const import (
DOMAIN,
EVENT_CLASS_BUTTON,
EVENT_CLASS_DIMMER,
EVENT_PROPERTIES,
EVENT_TYPE,
BTHomeBleEvent,
)
from .types import BTHomeConfigEntry
DESCRIPTIONS_BY_EVENT_CLASS = {
EVENT_CLASS_BUTTON: EventEntityDescription(
key=EVENT_CLASS_BUTTON,
translation_key="button",
event_types=[
"press",
"double_press",
"triple_press",
"long_press",
"long_double_press",
"long_triple_press",
],
device_class=EventDeviceClass.BUTTON,
),
EVENT_CLASS_DIMMER: EventEntityDescription(
key=EVENT_CLASS_DIMMER,
translation_key="dimmer",
event_types=["rotate_left", "rotate_right"],
),
}
class BTHomeEventEntity(EventEntity):
"""Representation of a BTHome event entity."""
_attr_should_poll = False
_attr_has_entity_name = True
def __init__(
self,
address: str,
event_class: str,
event: BTHomeBleEvent | None,
) -> None:
"""Initialise a BTHome event entity."""
self._update_signal = format_event_dispatcher_name(address, event_class)
# event_class is something like "button" or "dimmer"
# and it maybe postfixed with "_1", "_2", "_3", etc
# If there is only one button then it will be "button"
base_event_class, _, postfix = event_class.partition("_")
base_description = DESCRIPTIONS_BY_EVENT_CLASS[base_event_class]
self.entity_description = replace(base_description, key=event_class)
postfix_name = f" {postfix}" if postfix else ""
self._attr_name = f"{base_event_class.title()}{postfix_name}"
# Matches logic in PassiveBluetoothProcessorEntity
self._attr_device_info = dr.DeviceInfo(
identifiers={(DOMAIN, address)},
connections={(dr.CONNECTION_BLUETOOTH, address)},
)
self._attr_unique_id = f"{address}-{event_class}"
# If the event is provided then we can set the initial state
# since the event itself is likely what triggered the creation
# of this entity. We have to do this at creation time since
# entities are created dynamically and would otherwise miss
# the initial state.
if event:
self._trigger_event(event[EVENT_TYPE], event[EVENT_PROPERTIES])
async def async_added_to_hass(self) -> None:
"""Entity added to hass."""
await super().async_added_to_hass()
self.async_on_remove(
async_dispatcher_connect(
self.hass,
self._update_signal,
self._async_handle_event,
)
)
@callback
def _async_handle_event(self, event: BTHomeBleEvent) -> None:
self._trigger_event(event[EVENT_TYPE], event[EVENT_PROPERTIES])
self.async_write_ha_state()
async def async_setup_entry(
hass: HomeAssistant,
entry: BTHomeConfigEntry,
async_add_entities: AddEntitiesCallback,
) -> None:
"""Set up BTHome event."""
coordinator = entry.runtime_data
address = coordinator.address
ent_reg = er.async_get(hass)
async_add_entities(
# Matches logic in PassiveBluetoothProcessorEntity
BTHomeEventEntity(address_event_class[0], address_event_class[2], None)
for ent_reg_entry in er.async_entries_for_config_entry(ent_reg, entry.entry_id)
if ent_reg_entry.domain == "event"
and (address_event_class := ent_reg_entry.unique_id.partition("-"))
)
@callback
def _async_discovered_event_class(event_class: str, event: BTHomeBleEvent) -> None:
"""Handle a newly discovered event class with or without a postfix."""
async_add_entities([BTHomeEventEntity(address, event_class, event)])
entry.async_on_unload(
async_dispatcher_connect(
hass,
format_discovered_event_class(address),
_async_discovered_event_class,
)
)