Add water consumption sensor

[slovdahl]

Related to #58.

[slovdahl]

Tested locally that HA starts and adds a sensor that shows 0 l consumed. Will check back once the washing machine or dishwasher has been used the next time.

[slovdahl]

Doesn't seem like my washing machine provides any water consumption 🤔 The dishwasher seems to do though. I'll need to follow this up in the coming days when the washing machine and dishwasher has been running more times.

[slovdahl]

Doesn't seem like my washing machine provides any water consumption 🤔 The dishwasher seems to do though. I'll need to follow this up in the coming days when the washing machine and dishwasher has been running more times.

Yeah, I suspect my refactoring broke it a little bit (see also #59 (comment)). This hopefully fixes it, I'll submit a PR:

diff --git custom_components/miele/sensor.py custom_components/miele/sensor.py
index a971a59..5e1f0d2 100644
--- custom_components/miele/sensor.py
+++ custom_components/miele/sensor.py
@@ -457,6 +457,12 @@ class MieleSensorEntity(SensorEntity):
         else:
             return result + " " + _map_key(self._key)

+    async def async_update(self):
+        if not self.device_id in self._hass.data[MIELE_DOMAIN][DATA_DEVICES]:
+            _LOGGER.debug("Miele device disappeared: {}".format(self.device_id))
+        else:
+            self._device = self._hass.data[MIELE_DOMAIN][DATA_DEVICES][self.device_id]
+

 class MieleStatusSensor(MieleRawSensor):
     def __init(self, client, device, key):