Add support for Elexa Guardian water valve controllers (#34627)

* Add support for Elexa Guardian water valve controllers

* Zeroconf + cleanup

* Sensors and services

* API registration

* Service bug fixes

* Fix bug in cleanup

* Tests and coverage

* Fix incorrect service description

* Bump aioguardian

* Bump aioguardian to 0.2.2

* Bump aioguardian to 0.2.3

* Proper entity inheritance

* Give device a proper name

* Code review

homeassistant/components/guardian/binary_sensor.py

@@ -0,0 +1,62 @@
+"""Binary sensors for the Elexa Guardian integration."""
+from homeassistant.components.binary_sensor import BinarySensorEntity
+from homeassistant.core import callback
+
+from . import GuardianEntity
+from .const import (
+    DATA_CLIENT,
+    DATA_SENSOR_STATUS,
+    DATA_WIFI_STATUS,
+    DOMAIN,
+    SENSOR_KIND_AP_INFO,
+    SENSOR_KIND_LEAK_DETECTED,
+)
+
+ATTR_CONNECTED_CLIENTS = "connected_clients"
+
+SENSORS = [
+    (SENSOR_KIND_AP_INFO, "Onboard AP Enabled", "connectivity"),
+    (SENSOR_KIND_LEAK_DETECTED, "Leak Detected", "moisture"),
+]
+
+
+async def async_setup_entry(hass, entry, async_add_entities):
+    """Set up Guardian switches based on a config entry."""
+    guardian = hass.data[DOMAIN][DATA_CLIENT][entry.entry_id]
+    async_add_entities(
+        [
+            GuardianBinarySensor(guardian, kind, name, device_class)
+            for kind, name, device_class in SENSORS
+        ],
+        True,
+    )
+
+
+class GuardianBinarySensor(GuardianEntity, BinarySensorEntity):
+    """Define a generic Guardian sensor."""
+
+    def __init__(self, guardian, kind, name, device_class):
+        """Initialize."""
+        super().__init__(guardian, kind, name, device_class, None)
+
+        self._is_on = True
+
+    @property
+    def is_on(self):
+        """Return True if the binary sensor is on."""
+        return self._is_on
+
+    @callback
+    def _update_from_latest_data(self):
+        """Update the entity."""
+        if self._kind == SENSOR_KIND_AP_INFO:
+            self._is_on = self._guardian.data[DATA_WIFI_STATUS]["ap_enabled"]
+            self._attrs.update(
+                {
+                    ATTR_CONNECTED_CLIENTS: self._guardian.data[DATA_WIFI_STATUS][
+                        "ap_clients"
+                    ]
+                }
+            )
+        elif self._kind == SENSOR_KIND_LEAK_DETECTED:
+            self._is_on = self._guardian.data[DATA_SENSOR_STATUS]["wet"]