ESPHome sensor use total_increasing state class (#55208)

homeassistant/components/esphome/sensor.py

@@ -1,8 +1,6 @@
 """Support for esphome sensors."""
 from __future__ import annotations
 
-from contextlib import suppress
-from datetime import datetime
 import math
 from typing import cast
 
@@ -20,13 +18,13 @@ from homeassistant.components.sensor import (
     DEVICE_CLASS_TIMESTAMP,
     DEVICE_CLASSES,
     STATE_CLASS_MEASUREMENT,
+    STATE_CLASS_TOTAL_INCREASING,
     SensorEntity,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.core import HomeAssistant, callback
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.util import dt
 
 from . import (
@@ -71,83 +69,14 @@ _STATE_CLASSES: EsphomeEnumMapper[SensorStateClass, str | None] = EsphomeEnumMap
     {
         SensorStateClass.NONE: None,
         SensorStateClass.MEASUREMENT: STATE_CLASS_MEASUREMENT,
+        SensorStateClass.TOTAL_INCREASING: STATE_CLASS_TOTAL_INCREASING,
     }
 )
 
 
-class EsphomeSensor(
-    EsphomeEntity[SensorInfo, SensorState], SensorEntity, RestoreEntity
-):
+class EsphomeSensor(EsphomeEntity[SensorInfo, SensorState], SensorEntity):
     """A sensor implementation for esphome."""
 
-    _old_state: float | None = None
-
-    async def async_added_to_hass(self) -> None:
-        """Register callbacks."""
-        await super().async_added_to_hass()
-
-        if self._static_info.last_reset_type != LastResetType.AUTO:
-            return
-
-        # Logic to restore old state for last_reset_type AUTO:
-        last_state = await self.async_get_last_state()
-        if last_state is None:
-            return
-
-        if "last_reset" in last_state.attributes:
-            self._attr_last_reset = dt.as_utc(
-                datetime.fromisoformat(last_state.attributes["last_reset"])
-            )
-
-        with suppress(ValueError):
-            self._old_state = float(last_state.state)
-
-    @callback
-    def _on_state_update(self) -> None:
-        """Check last_reset when new state arrives."""
-        if self._static_info.last_reset_type == LastResetType.NEVER:
-            self._attr_last_reset = dt.utc_from_timestamp(0)
-
-        if self._static_info.last_reset_type != LastResetType.AUTO:
-            super()._on_state_update()
-            return
-
-        # Last reset type AUTO logic for the last_reset property
-        # In this mode we automatically determine if an accumulator reset
-        # has taken place.
-        # We compare the last valid value (_old_state) with the new one.
-        # If the value has reset to 0 or has significantly reduced we say
-        # it has reset.
-        new_state: float | None = None
-        state = cast("str | None", self.state)
-        if state is not None:
-            with suppress(ValueError):
-                new_state = float(state)
-
-        did_reset = False
-        if new_state is None:
-            # New state is not a float - we'll detect the reset once we get valid data again
-            did_reset = False
-        elif self._old_state is None:
-            # First measurement we ever got for this sensor, always a reset
-            did_reset = True
-        elif new_state == 0:
-            # don't set reset if both old and new are 0
-            # we would already have detected the reset on the last state
-            did_reset = self._old_state != 0
-        elif new_state < self._old_state:
-            did_reset = True
-
-        # Set last_reset to now if we detected a reset
-        if did_reset:
-            self._attr_last_reset = dt.utcnow()
-
-        if new_state is not None:
-            # Only write to old_state if the new one contains actual data
-            self._old_state = new_state
-
-        super()._on_state_update()
-
     @property
     def icon(self) -> str | None:
         """Return the icon."""
@@ -190,6 +119,14 @@ class EsphomeSensor(
         """Return the state class of this entity."""
         if not self._static_info.state_class:
             return None
+        state_class = self._static_info.state_class
+        reset_type = self._static_info.last_reset_type
+        if (
+            state_class == SensorStateClass.MEASUREMENT
+            and reset_type == LastResetType.AUTO
+        ):
+            # Legacy, last_reset_type auto was the equivalent to the TOTAL_INCREASING state class
+            return STATE_CLASS_TOTAL_INCREASING
         return _STATE_CLASSES.from_esphome(self._static_info.state_class)