vicare: Don't create unsupportedd button entites (#79425)

Button entities should only be offered when the datapoint exists on
the API.

homeassistant/components/vicare/__init__.py

@@ -34,6 +34,14 @@ class ViCareRequiredKeysMixin:
     value_getter: Callable[[Device], bool]
 
 
+@dataclass()
+class ViCareRequiredKeysMixinWithSet:
+    """Mixin for required keys with setter."""
+
+    value_getter: Callable[[Device], bool]
+    value_setter: Callable[[Device], bool]
+
+
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up from config entry."""
     _LOGGER.debug("Setting up ViCare component")

homeassistant/components/vicare/button.py

@@ -18,7 +18,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity import DeviceInfo, EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
-from . import ViCareRequiredKeysMixin
+from . import ViCareRequiredKeysMixinWithSet
 from .const import DOMAIN, VICARE_API, VICARE_DEVICE_CONFIG, VICARE_NAME
 
 _LOGGER = logging.getLogger(__name__)
@@ -27,7 +27,9 @@ BUTTON_DHW_ACTIVATE_ONETIME_CHARGE = "activate_onetimecharge"
 
 
 @dataclass
-class ViCareButtonEntityDescription(ButtonEntityDescription, ViCareRequiredKeysMixin):
+class ViCareButtonEntityDescription(
+    ButtonEntityDescription, ViCareRequiredKeysMixinWithSet
+):
     """Describes ViCare button sensor entity."""
 
 
@@ -37,7 +39,8 @@ BUTTON_DESCRIPTIONS: tuple[ViCareButtonEntityDescription, ...] = (
         name="Activate one-time charge",
         icon="mdi:shower-head",
         entity_category=EntityCategory.CONFIG,
-        value_getter=lambda api: api.activateOneTimeCharge(),
+        value_getter=lambda api: api.getOneTimeCharge(),
+        value_setter=lambda api: api.activateOneTimeCharge(),
     ),
 )
 
@@ -54,6 +57,15 @@ async def async_setup_entry(
     entities = []
 
     for description in BUTTON_DESCRIPTIONS:
+        try:
+            description.value_getter(api)
+            _LOGGER.debug("Found entity %s", description.name)
+        except PyViCareNotSupportedFeatureError:
+            _LOGGER.info("Feature not supported %s", description.name)
+            continue
+        except AttributeError:
+            _LOGGER.debug("Attribute Error %s", name)
+            continue
         entity = ViCareButton(
             f"{name} {description.name}",
             api,
@@ -83,7 +95,7 @@ class ViCareButton(ButtonEntity):
         """Handle the button press."""
         try:
             with suppress(PyViCareNotSupportedFeatureError):
-                self.entity_description.value_getter(self._api)
+                self.entity_description.value_setter(self._api)
         except requests.exceptions.ConnectionError:
             _LOGGER.error("Unable to retrieve data from ViCare server")
         except ValueError: