Don't add Roborock switches if it is not supported (#94069)

* don't add switches if it is not supported

* don't create entity unless if it is valid

* Raise on other exceptions

* rework valid_enties

homeassistant/components/roborock/switch.py

@@ -1,9 +1,11 @@
 """Support for Roborock switch."""
+import asyncio
 from collections.abc import Callable, Coroutine
 from dataclasses import dataclass
 import logging
 from typing import Any
 
+from roborock.exceptions import RoborockException
 from roborock.roborock_typing import RoborockCommand
 
 from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
@@ -30,6 +32,8 @@ class RoborockSwitchDescriptionMixin:
     evaluate_value: Callable[[dict], bool]
     # Sets the status of the switch
     set_command: Callable[[RoborockEntity, bool], Coroutine[Any, Any, dict]]
+    # Check support of this feature
+    check_support: Callable[[RoborockDataUpdateCoordinator], Coroutine[Any, Any, dict]]
 
 
 @dataclass
@@ -45,6 +49,9 @@ SWITCH_DESCRIPTIONS: list[RoborockSwitchDescription] = [
             RoborockCommand.SET_CHILD_LOCK_STATUS, {"lock_status": 1 if value else 0}
         ),
         get_value=lambda data: data.send(RoborockCommand.GET_CHILD_LOCK_STATUS),
+        check_support=lambda data: data.api.send_command(
+            RoborockCommand.GET_CHILD_LOCK_STATUS
+        ),
         evaluate_value=lambda data: data["lock_status"] == 1,
         key="child_lock",
         translation_key="child_lock",
@@ -56,6 +63,9 @@ SWITCH_DESCRIPTIONS: list[RoborockSwitchDescription] = [
             RoborockCommand.SET_FLOW_LED_STATUS, {"status": 1 if value else 0}
         ),
         get_value=lambda data: data.send(RoborockCommand.GET_FLOW_LED_STATUS),
+        check_support=lambda data: data.api.send_command(
+            RoborockCommand.GET_FLOW_LED_STATUS
+        ),
         evaluate_value=lambda data: data["status"] == 1,
         key="status_indicator",
         translation_key="status_indicator",
@@ -75,16 +85,38 @@ async def async_setup_entry(
     coordinators: dict[str, RoborockDataUpdateCoordinator] = hass.data[DOMAIN][
         config_entry.entry_id
     ]
-    async_add_entities(
-        (
-            RoborockSwitchEntity(
-                f"{description.key}_{slugify(device_id)}",
-                coordinator,
-                description,
-            )
-            for device_id, coordinator in coordinators.items()
-            for description in SWITCH_DESCRIPTIONS
+    possible_entities: list[
+        tuple[str, RoborockDataUpdateCoordinator, RoborockSwitchDescription]
+    ] = [
+        (device_id, coordinator, description)
+        for device_id, coordinator in coordinators.items()
+        for description in SWITCH_DESCRIPTIONS
+    ]
+    # We need to check if this function is supported by the device.
+    results = await asyncio.gather(
+        *(
+            description.check_support(coordinator)
+            for _, coordinator, description in possible_entities
         ),
+        return_exceptions=True,
+    )
+    valid_entities: list[RoborockSwitchEntity] = []
+    for posible_entity, result in zip(possible_entities, results):
+        if isinstance(result, Exception):
+            if not isinstance(result, RoborockException):
+                raise result
+            _LOGGER.debug("Not adding entity because of %s", result)
+        else:
+            valid_entities.append(
+                RoborockSwitchEntity(
+                    f"{posible_entity[2].key}_{slugify(posible_entity[0])}",
+                    posible_entity[1],
+                    posible_entity[2],
+                    result,
+                )
+            )
+    async_add_entities(
+        valid_entities,
         True,
     )
 
@@ -99,10 +131,12 @@ class RoborockSwitchEntity(RoborockEntity, SwitchEntity):
         unique_id: str,
         coordinator: RoborockDataUpdateCoordinator,
         entity_description: RoborockSwitchDescription,
+        initial_value: bool,
     ) -> None:
         """Create a switch entity."""
         self.entity_description = entity_description
         super().__init__(unique_id, coordinator.device_info, coordinator.api)
+        self._attr_is_on = initial_value
 
     async def async_turn_off(self, **kwargs: Any) -> None:
         """Turn off the switch."""