108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
"""Base classes for HA Bluetooth scanners for bluetooth."""
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from __future__ import annotations
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from collections.abc import Callable
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from dataclasses import dataclass
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from typing import Any
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from bleak.backends.device import BLEDevice
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from bleak.backends.scanner import AdvertisementData
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from bluetooth_adapters import DiscoveredDeviceAdvertisementData
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from habluetooth import BaseHaRemoteScanner, BaseHaScanner, HaBluetoothConnector
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from home_assistant_bluetooth import BluetoothServiceInfoBleak
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from homeassistant.const import EVENT_HOMEASSISTANT_STOP
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from homeassistant.core import (
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CALLBACK_TYPE,
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Event,
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HomeAssistant,
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callback as hass_callback,
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)
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from . import models
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@dataclass(slots=True)
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class BluetoothScannerDevice:
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"""Data for a bluetooth device from a given scanner."""
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scanner: BaseHaScanner
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ble_device: BLEDevice
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advertisement: AdvertisementData
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class HomeAssistantRemoteScanner(BaseHaRemoteScanner):
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"""Home Assistant remote BLE scanner.
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This is the only object that should know about
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the hass object.
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"""
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__slots__ = (
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"hass",
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"_storage",
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"_cancel_stop",
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)
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def __init__(
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self,
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hass: HomeAssistant,
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scanner_id: str,
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name: str,
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new_info_callback: Callable[[BluetoothServiceInfoBleak], None],
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connector: HaBluetoothConnector | None,
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connectable: bool,
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) -> None:
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"""Initialize the scanner."""
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self.hass = hass
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assert models.MANAGER is not None
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self._storage = models.MANAGER.storage
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self._cancel_stop: CALLBACK_TYPE | None = None
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super().__init__(scanner_id, name, new_info_callback, connector, connectable)
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@hass_callback
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def async_setup(self) -> CALLBACK_TYPE:
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"""Set up the scanner."""
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super().async_setup()
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if history := self._storage.async_get_advertisement_history(self.source):
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self._discovered_device_advertisement_datas = (
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history.discovered_device_advertisement_datas
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)
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self._discovered_device_timestamps = history.discovered_device_timestamps
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# Expire anything that is too old
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self._async_expire_devices()
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self._cancel_stop = self.hass.bus.async_listen(
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EVENT_HOMEASSISTANT_STOP, self._async_save_history
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)
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return self._unsetup
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@hass_callback
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def _unsetup(self) -> None:
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super()._unsetup()
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self._async_save_history()
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if self._cancel_stop:
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self._cancel_stop()
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self._cancel_stop = None
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@hass_callback
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def _async_save_history(self, event: Event | None = None) -> None:
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"""Save the history."""
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self._storage.async_set_advertisement_history(
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self.source,
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DiscoveredDeviceAdvertisementData(
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self.connectable,
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self._expire_seconds,
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self._discovered_device_advertisement_datas,
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self._discovered_device_timestamps,
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),
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)
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async def async_diagnostics(self) -> dict[str, Any]:
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"""Return diagnostic information about the scanner."""
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diag = await super().async_diagnostics()
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diag["storage"] = self._storage.async_get_advertisement_history_as_dict(
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self.source
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)
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return diag
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