Add min_elevation (#21)

README.md

@@ -65,6 +65,7 @@ type | description
 type | description
 -|-
 `elevation` | The sun's elevation (degrees).
+`min_elevation` | The sun's elevation at solar midnight (degrees).
 `max_elevation` | The sun's elevation at solar noon (degrees).
 
 ## Binary Sensors
@@ -117,6 +118,7 @@ sensor:
       - nautical_night
       - astronomical_night
       - elevation
+      - min_elevation
       - max_elevation
 binary_sensor:
   - platform: sun2

custom_components/sun2/sensor.py

@@ -193,24 +193,45 @@ def _update(self):
             self._state = round(self._state, 3)
 
 
-class Sun2MaxElevationSensor(Sun2Sensor):
-    """Sun2 Max Elevation Sensor."""
+class Sun2MinMaxElevationSensor(Sun2Sensor):
+    """Sun2 Min/Max Elevation Sensor."""
+
+    def __init__(self, hass, sensor_type, icon, is_min):
+        """Initialize sensor."""
+        super().__init__(hass, sensor_type, icon)
+        self._event = 'solar_midnight' if is_min else 'solar_noon'
 
     @property
     def unit_of_measurement(self):
         """Return the unit of measurement."""
         return '°'
 
     def _get_data(self, date_or_dt):
-        solar_noon = self._get_astral_event('solar_noon', date_or_dt)
-        return self._get_astral_event('solar_elevation', solar_noon)
+        event_time = self._get_astral_event(self._event, date_or_dt)
+        return self._get_astral_event('solar_elevation', event_time)
 
     def _update(self):
         super()._update()
         if self._state is not None:
             self._state = round(self._state, 3)
 
 
+class Sun2MinElevationSensor(Sun2MinMaxElevationSensor):
+    """Sun2 Min Elevation Sensor."""
+
+    def __init__(self, hass, sensor_type, icon):
+        """Initialize sensor."""
+        super().__init__(hass, sensor_type, icon, is_min=True)
+
+
+class Sun2MaxElevationSensor(Sun2MinMaxElevationSensor):
+    """Sun2 Max Elevation Sensor."""
+
+    def __init__(self, hass, sensor_type, icon):
+        """Initialize sensor."""
+        super().__init__(hass, sensor_type, icon, is_min=False)
+
+
 def _nearest_multiple(value, multiple):
     return int(round(value / multiple)) * multiple
 
@@ -376,7 +397,8 @@ def async_update(now):
     'civil_night': (Sun2PeriodOfTimeSensor, 'mdi:weather-night'),
     'nautical_night': (Sun2PeriodOfTimeSensor, 'mdi:weather-night'),
     'astronomical_night': (Sun2PeriodOfTimeSensor, 'mdi:weather-night'),
-    # Max elevation
+    # Min/Max elevation
+    'min_elevation': (Sun2MinElevationSensor, 'mdi:weather-night'),
     'max_elevation': (Sun2MaxElevationSensor, 'mdi:weather-sunny'),
     # Elevation
     'elevation': (Sun2ElevationSensor, 'mdi:weather-sunny'),