Reintroduce unique_id for Netatmo sensor (#18774)

* netatmo: make module type identification more consistent

For the interpretation of voltage values the different types of netatmo
modules need to be distinguished. This is currently done by selecting
the second character of the modules '_id'. The _id-field actually
contains a mac address. This is an undocumented way of identifying the
module_type.

The netatmo API also delivers a field called 'type' which provides a
more consistent way to differentiate the fields. This commit introduces
a differentiation which uses this provided type. This should improve
readability.

Also the field module_id is renamed to module_type which should better
resemble what it actually represents.

* netatmo: reintroduce unique_id using actual module mac address

Each netatmo module features a unique MAC-Address. The base station uses
an actual assigned MAC Address it also uses on the Wifi it connects to.
All other modules have unique MAC Addresses which are only assigned and
used by Netatmo on the internal Wireless-Network. All theses Addresses
are exposed via the API. So we could use the combination
MAC-Address-Sensor_type as unique_id.

In a previous commit this had already been tried but there was a
misunderstanding in what the 'module_id' represented. It was actually
only a module_type representation so it clashed when two modules of the
same type where used.

* Netatmo: fixed line length

homeassistant/components/sensor/netatmo.py

@@ -63,6 +63,11 @@
     vol.Optional(CONF_MODULES): MODULE_SCHEMA,
 })
 
+MODULE_TYPE_OUTDOOR = 'NAModule1'
+MODULE_TYPE_WIND = 'NAModule2'
+MODULE_TYPE_RAIN = 'NAModule3'
+MODULE_TYPE_INDOOR = 'NAModule4'
+
 
 def setup_platform(hass, config, add_entities, discovery_info=None):
     """Set up the available Netatmo weather sensors."""
@@ -74,7 +79,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
     try:
         if CONF_MODULES in config:
             # Iterate each module
-            for module_name, monitored_conditions in\
+            for module_name, monitored_conditions in \
                     config[CONF_MODULES].items():
                 # Test if module exists
                 if module_name not in data.get_module_names():
@@ -85,7 +90,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
                     dev.append(NetAtmoSensor(data, module_name, variable))
         else:
             for module_name in data.get_module_names():
-                for variable in\
+                for variable in \
                         data.station_data.monitoredConditions(module_name):
                     if variable in SENSOR_TYPES.keys():
                         dev.append(NetAtmoSensor(data, module_name, variable))
@@ -112,9 +117,11 @@ def __init__(self, netatmo_data, module_name, sensor_type):
         self._device_class = SENSOR_TYPES[self.type][3]
         self._icon = SENSOR_TYPES[self.type][2]
         self._unit_of_measurement = SENSOR_TYPES[self.type][1]
-        module_id = self.netatmo_data.\
+        self._module_type = self.netatmo_data. \
+            station_data.moduleByName(module=module_name)['type']
+        module_id = self.netatmo_data. \
             station_data.moduleByName(module=module_name)['_id']
-        self.module_id = module_id[1]
+        self._unique_id = '{}-{}'.format(module_id, self.type)
 
     @property
     def name(self):
@@ -141,6 +148,11 @@ def unit_of_measurement(self):
         """Return the unit of measurement of this entity, if any."""
         return self._unit_of_measurement
 
+    @property
+    def unique_id(self):
+        """Return the unique ID for this sensor."""
+        return self._unique_id
+
     def update(self):
         """Get the latest data from NetAtmo API and updates the states."""
         self.netatmo_data.update()
@@ -169,7 +181,8 @@ def update(self):
             self._state = round(data['Pressure'], 1)
         elif self.type == 'battery_lvl':
             self._state = data['battery_vp']
-        elif self.type == 'battery_vp' and self.module_id == '6':
+        elif (self.type == 'battery_vp' and
+              self._module_type == MODULE_TYPE_WIND):
             if data['battery_vp'] >= 5590:
                 self._state = "Full"
             elif data['battery_vp'] >= 5180:
@@ -180,7 +193,8 @@ def update(self):
                 self._state = "Low"
             elif data['battery_vp'] < 4360:
                 self._state = "Very Low"
-        elif self.type == 'battery_vp' and self.module_id == '5':
+        elif (self.type == 'battery_vp' and
+              self._module_type == MODULE_TYPE_RAIN):
             if data['battery_vp'] >= 5500:
                 self._state = "Full"
             elif data['battery_vp'] >= 5000:
@@ -191,7 +205,8 @@ def update(self):
                 self._state = "Low"
             elif data['battery_vp'] < 4000:
                 self._state = "Very Low"
-        elif self.type == 'battery_vp' and self.module_id == '3':
+        elif (self.type == 'battery_vp' and
+              self._module_type == MODULE_TYPE_INDOOR):
             if data['battery_vp'] >= 5640:
                 self._state = "Full"
             elif data['battery_vp'] >= 5280:
@@ -202,7 +217,8 @@ def update(self):
                 self._state = "Low"
             elif data['battery_vp'] < 4560:
                 self._state = "Very Low"
-        elif self.type == 'battery_vp' and self.module_id == '2':
+        elif (self.type == 'battery_vp' and
+              self._module_type == MODULE_TYPE_OUTDOOR):
             if data['battery_vp'] >= 5500:
                 self._state = "Full"
             elif data['battery_vp'] >= 5000: