Use last state attribute

custom_components/sensus_analytics/manifest.json

@@ -1,7 +1,7 @@
 {
   "domain": "sensus_analytics",
   "name": "Sensus Analytics Integration",
-  "version": "1.6.11",
+  "version": "1.6.12",
   "documentation": "https://github.com/zestysoft/sensus_analytics_integration",
   "dependencies": [],
   "codeowners": ["@zestysoft"],

custom_components/sensus_analytics/sensor.py

@@ -1,6 +1,6 @@
 """Sensor platform for the Sensus Analytics Integration."""
 
-from datetime import datetime
+from datetime import datetime, timedelta
 
 from homeassistant.components.sensor import SensorDeviceClass, SensorEntity, SensorStateClass
 from homeassistant.config_entries import ConfigEntry
@@ -118,6 +118,11 @@ def __init__(self, coordinator, entry):
         self._attr_device_class = SensorDeviceClass.WATER
         self._attr_state_class = SensorStateClass.TOTAL
 
+    @property
+    def last_reset(self):
+        """Return the last reset time for the daily usage sensor."""
+        return dt_util.start_of_local_day()
+
     @property
     def native_value(self):
         """Return the state of the sensor."""
@@ -244,6 +249,11 @@ def __init__(self, coordinator, entry):
         self._attr_device_class = SensorDeviceClass.WATER
         self._attr_state_class = SensorStateClass.TOTAL_INCREASING
 
+    @property
+    def last_reset(self):
+        """Return the last reset time for the meter odometer sensor."""
+        return None  # Odometer typically does not reset
+
     @property
     def native_value(self):
         """Return the state of the sensor."""
@@ -263,6 +273,13 @@ def __init__(self, coordinator, entry):
         self._attr_device_class = SensorDeviceClass.WATER
         self._attr_state_class = SensorStateClass.TOTAL
 
+    @property
+    def last_reset(self):
+        """Return the last reset time for the billing usage sensor."""
+        local_tz = dt_util.get_time_zone(self.hass.config.time_zone)
+        now = datetime.now(local_tz)
+        return now.replace(day=1, hour=0, minute=0, second=0, microsecond=0)
+
     @property
     def native_value(self):
         """Return the state of the sensor."""
@@ -391,6 +408,13 @@ def __init__(self, coordinator, entry):
         self._attr_device_class = SensorDeviceClass.WATER
         self._attr_state_class = SensorStateClass.TOTAL
 
+    @property
+    def last_reset(self):
+        """Return the last reset time for the last hour usage sensor."""
+        local_tz = dt_util.get_time_zone(self.hass.config.time_zone)
+        now = datetime.now(local_tz)
+        return now.replace(minute=0, second=0, microsecond=0) - timedelta(hours=1)
+
     @property
     def native_value(self):
         """Return the usage for the current hour from the previous day."""