Add sensor platform to iaqualink component (#26544)

* Add sensor platform to iaqualink component

* Remove unnecessary icon, fix case where value is 0

.coveragerc

@@ -290,6 +290,7 @@ omit =
     homeassistant/components/ialarm/alarm_control_panel.py
     homeassistant/components/iaqualink/climate.py
     homeassistant/components/iaqualink/light.py
+    homeassistant/components/iaqualink/sensor.py
     homeassistant/components/icloud/device_tracker.py
     homeassistant/components/idteck_prox/*
     homeassistant/components/ifttt/*

homeassistant/components/iaqualink/__init__.py

@@ -10,12 +10,14 @@ from iaqualink import (
     AqualinkClient,
     AqualinkLight,
     AqualinkLoginException,
+    AqualinkSensor,
     AqualinkThermostat,
 )
 
 from homeassistant import config_entries
 from homeassistant.components.climate import DOMAIN as CLIMATE_DOMAIN
 from homeassistant.components.light import DOMAIN as LIGHT_DOMAIN
+from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
 from homeassistant.core import callback
@@ -74,6 +76,7 @@ async def async_setup_entry(hass: HomeAssistantType, entry: ConfigEntry) -> None
     # These will contain the initialized devices
     climates = hass.data[DOMAIN][CLIMATE_DOMAIN] = []
     lights = hass.data[DOMAIN][LIGHT_DOMAIN] = []
+    sensors = hass.data[DOMAIN][SENSOR_DOMAIN] = []
 
     session = async_create_clientsession(hass, cookie_jar=CookieJar(unsafe=True))
     aqualink = AqualinkClient(username, password, session)
@@ -97,6 +100,8 @@ async def async_setup_entry(hass: HomeAssistantType, entry: ConfigEntry) -> None
             climates += [dev]
         elif isinstance(dev, AqualinkLight):
             lights += [dev]
+        elif isinstance(dev, AqualinkSensor):
+            sensors += [dev]
 
     forward_setup = hass.config_entries.async_forward_entry_setup
     if climates:
@@ -105,6 +110,9 @@ async def async_setup_entry(hass: HomeAssistantType, entry: ConfigEntry) -> None
     if lights:
         _LOGGER.debug("Got %s lights: %s", len(lights), lights)
         hass.async_create_task(forward_setup(entry, LIGHT_DOMAIN))
+    if sensors:
+        _LOGGER.debug("Got %s sensors: %s", len(sensors), sensors)
+        hass.async_create_task(forward_setup(entry, SENSOR_DOMAIN))
 
     async def _async_systems_update(now):
         """Refresh internal state for all systems."""
@@ -126,6 +134,8 @@ async def async_unload_entry(hass: HomeAssistantType, entry: ConfigEntry) -> boo
         tasks += [forward_unload(entry, CLIMATE_DOMAIN)]
     if hass.data[DOMAIN][LIGHT_DOMAIN]:
         tasks += [forward_unload(entry, LIGHT_DOMAIN)]
+    if hass.data[DOMAIN][SENSOR_DOMAIN]:
+        tasks += [forward_unload(entry, SENSOR_DOMAIN)]
 
     hass.data[DOMAIN].clear()
 

homeassistant/components/iaqualink/sensor.py

@@ -0,0 +1,59 @@
+"""Support for Aqualink temperature sensors."""
+import logging
+from typing import Optional
+
+from iaqualink import AqualinkSensor
+
+from homeassistant.components.sensor import DOMAIN
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import DEVICE_CLASS_TEMPERATURE, TEMP_CELSIUS, TEMP_FAHRENHEIT
+from homeassistant.helpers.typing import HomeAssistantType
+
+from . import AqualinkEntity
+from .const import DOMAIN as AQUALINK_DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+PARALLEL_UPDATES = 0
+
+
+async def async_setup_entry(
+    hass: HomeAssistantType, config_entry: ConfigEntry, async_add_entities
+) -> None:
+    """Set up discovered sensors."""
+    devs = []
+    for dev in hass.data[AQUALINK_DOMAIN][DOMAIN]:
+        devs.append(HassAqualinkSensor(dev))
+    async_add_entities(devs, True)
+
+
+class HassAqualinkSensor(AqualinkEntity):
+    """Representation of a sensor."""
+
+    def __init__(self, dev: AqualinkSensor):
+        """Initialize the sensor."""
+        self.dev = dev
+
+    @property
+    def name(self) -> str:
+        """Return the name of the sensor."""
+        return self.dev.label
+
+    @property
+    def unit_of_measurement(self) -> str:
+        """Return the measurement unit for the sensor."""
+        if self.dev.system.temp_unit == "F":
+            return TEMP_FAHRENHEIT
+        return TEMP_CELSIUS
+
+    @property
+    def state(self) -> str:
+        """Return the state of the sensor."""
+        return int(self.dev.state) if self.dev.state != "" else None
+
+    @property
+    def device_class(self) -> Optional[str]:
+        """Return the class of the sensor."""
+        if self.dev.name.endswith("_temp"):
+            return DEVICE_CLASS_TEMPERATURE
+        return None