core/homeassistant/components/axis/entity.py

123 lines
3.8 KiB
Python

"""Base classes for Axis entities."""
from __future__ import annotations
from abc import abstractmethod
from collections.abc import Callable
from dataclasses import dataclass
from typing import TYPE_CHECKING
from axis.models.event import Event, EventTopic
from homeassistant.core import callback
from homeassistant.helpers.device_registry import DeviceInfo
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.helpers.entity import Entity, EntityDescription
from .const import DOMAIN as AXIS_DOMAIN
if TYPE_CHECKING:
from .hub import AxisHub
TOPIC_TO_EVENT_TYPE = {
EventTopic.DAY_NIGHT_VISION: "DayNight",
EventTopic.FENCE_GUARD: "Fence Guard",
EventTopic.LIGHT_STATUS: "Light",
EventTopic.LOITERING_GUARD: "Loitering Guard",
EventTopic.MOTION_DETECTION: "Motion",
EventTopic.MOTION_DETECTION_3: "VMD3",
EventTopic.MOTION_DETECTION_4: "VMD4",
EventTopic.MOTION_GUARD: "Motion Guard",
EventTopic.OBJECT_ANALYTICS: "Object Analytics",
EventTopic.PIR: "PIR",
EventTopic.PORT_INPUT: "Input",
EventTopic.PORT_SUPERVISED_INPUT: "Supervised Input",
EventTopic.PTZ_IS_MOVING: "is_moving",
EventTopic.PTZ_ON_PRESET: "on_preset",
EventTopic.RELAY: "Relay",
EventTopic.SOUND_TRIGGER_LEVEL: "Sound",
}
@dataclass(frozen=True, kw_only=True)
class AxisEventDescription(EntityDescription):
"""Axis event based entity description."""
event_topic: tuple[EventTopic, ...] | EventTopic
"""Event topic that provides state updates."""
name_fn: Callable[[AxisHub, Event], str] = lambda hub, event: ""
"""Function providing the corresponding name to the event ID."""
supported_fn: Callable[[AxisHub, Event], bool] = lambda hub, event: True
"""Function validating if event is supported."""
class AxisEntity(Entity):
"""Base common to all Axis entities."""
_attr_has_entity_name = True
def __init__(self, hub: AxisHub) -> None:
"""Initialize the Axis event."""
self.hub = hub
self._attr_device_info = DeviceInfo(
identifiers={(AXIS_DOMAIN, hub.unique_id)},
serial_number=hub.unique_id,
)
async def async_added_to_hass(self) -> None:
"""Subscribe device events."""
self.async_on_remove(
async_dispatcher_connect(
self.hass,
self.hub.signal_reachable,
self.async_signal_reachable_callback,
)
)
@callback
def async_signal_reachable_callback(self) -> None:
"""Call when device connection state change."""
self._attr_available = self.hub.available
self.async_write_ha_state()
class AxisEventEntity(AxisEntity):
"""Base common to all Axis entities from event stream."""
entity_description: AxisEventDescription
_attr_should_poll = False
def __init__(
self, hub: AxisHub, description: AxisEventDescription, event: Event
) -> None:
"""Initialize the Axis event."""
super().__init__(hub)
self.entity_description = description
self._event_id = event.id
self._event_topic = event.topic_base
event_type = TOPIC_TO_EVENT_TYPE[event.topic_base]
self._attr_name = description.name_fn(hub, event) or f"{event_type} {event.id}"
self._attr_unique_id = f"{hub.unique_id}-{event.topic}-{event.id}"
@callback
@abstractmethod
def async_event_callback(self, event: Event) -> None:
"""Update the entities state."""
async def async_added_to_hass(self) -> None:
"""Subscribe sensors events."""
await super().async_added_to_hass()
self.async_on_remove(
self.hub.api.event.subscribe(
self.async_event_callback,
id_filter=self._event_id,
topic_filter=self._event_topic,
)
)