added battery sensor

custom_components/bluetti_bt/sensor.py

@@ -0,0 +1,80 @@
+"""Bluetti BT sensors."""
+
+from __future__ import annotations
+
+from datetime import timedelta
+import logging
+
+import async_timeout
+
+from homeassistant.components.sensor import SensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.const import CONF_ADDRESS
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.update_coordinator import (
+    CoordinatorEntity,
+    DataUpdateCoordinator,
+    UpdateFailed,
+)
+
+from . import device_info as dev_info, get_unique_id
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
+) -> None:
+    """Setup sensor entities."""
+
+    # Create coordinator for polling
+    coordinator = PollingCoordinator(hass)
+    await coordinator.async_config_entry_first_refresh()
+
+    # Generate device info
+    _LOGGER.error("Creating sensors for device %s", entry.data.get(CONF_ADDRESS))
+    device_info = dev_info(entry)
+    async_add_entities(Battery(coordinator, device_info))
+
+
+class PollingCoordinator(DataUpdateCoordinator):
+    """Polling coordinator."""
+
+    def __init__(self, hass):
+        """Initialize coordinator."""
+        super().__init__(
+            hass,
+            _LOGGER,
+            name="Bluetti polling coordinator",
+            update_interval=timedelta(seconds=10),
+        )
+
+    async def _async_update_data(self):
+        """Fetch data from API endpoint.
+
+        This is the place to pre-process the data to lookup tables
+        so entities can quickly look up their data.
+        """
+        self.logger.error("Polling data")
+
+
+class Battery(CoordinatorEntity, SensorEntity):
+    """Bluetti battery."""
+
+    def __init__(self, coordinator: PollingCoordinator, device_info: DeviceInfo):
+        """Init battery entity."""
+        super().__init__(coordinator)
+
+        self._attr_device_info = device_info
+        self._attr_name = f"{device_info.get('name')} Battery level"
+        self._attr_unique_id = get_unique_id(f"{device_info.get('name')} Battery level")
+        self._attr_unit_of_measurement = "%"
+        self._attr_device_class = "battery"
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        _LOGGER.error("Updating state of %s", self._attr_unique_id)
+        self.async_write_ha_state()