Add a new validate config WS command

homeassistant/components/websocket_api/commands.py

@@ -63,6 +63,7 @@ def async_register_commands(
     async_reg(hass, handle_subscribe_trigger)
     async_reg(hass, handle_test_condition)
     async_reg(hass, handle_unsubscribe_events)
+    async_reg(hass, handle_validate_config)
 
 
 def pong_message(iden: int) -> dict[str, Any]:
@@ -116,7 +117,7 @@ def forward_events(event: Event) -> None:
         event_type, forward_events
     )
 
-    connection.send_message(messages.result_message(msg["id"]))
+    connection.send_result(msg["id"])
 
 
 @callback
@@ -139,7 +140,7 @@ def forward_bootstrap_integrations(message: dict[str, Any]) -> None:
         hass, SIGNAL_BOOTSTRAP_INTEGRATONS, forward_bootstrap_integrations
     )
 
-    connection.send_message(messages.result_message(msg["id"]))
+    connection.send_result(msg["id"])
 
 
 @callback
@@ -157,13 +158,9 @@ def handle_unsubscribe_events(
 
     if subscription in connection.subscriptions:
         connection.subscriptions.pop(subscription)()
-        connection.send_message(messages.result_message(msg["id"]))
+        connection.send_result(msg["id"])
     else:
-        connection.send_message(
-            messages.error_message(
-                msg["id"], const.ERR_NOT_FOUND, "Subscription not found."
-            )
-        )
+        connection.send_error(msg["id"], const.ERR_NOT_FOUND, "Subscription not found.")
 
 
 @decorators.websocket_command(
@@ -196,36 +193,20 @@ async def handle_call_service(
             context,
             target=target,
         )
-        connection.send_message(
-            messages.result_message(msg["id"], {"context": context})
-        )
+        connection.send_result(msg["id"], {"context": context})
     except ServiceNotFound as err:
         if err.domain == msg["domain"] and err.service == msg["service"]:
-            connection.send_message(
-                messages.error_message(
-                    msg["id"], const.ERR_NOT_FOUND, "Service not found."
-                )
-            )
+            connection.send_error(msg["id"], const.ERR_NOT_FOUND, "Service not found.")
         else:
-            connection.send_message(
-                messages.error_message(
-                    msg["id"], const.ERR_HOME_ASSISTANT_ERROR, str(err)
-                )
-            )
+            connection.send_error(msg["id"], const.ERR_HOME_ASSISTANT_ERROR, str(err))
     except vol.Invalid as err:
-        connection.send_message(
-            messages.error_message(msg["id"], const.ERR_INVALID_FORMAT, str(err))
-        )
+        connection.send_error(msg["id"], const.ERR_INVALID_FORMAT, str(err))
     except HomeAssistantError as err:
         connection.logger.exception(err)
-        connection.send_message(
-            messages.error_message(msg["id"], const.ERR_HOME_ASSISTANT_ERROR, str(err))
-        )
+        connection.send_error(msg["id"], const.ERR_HOME_ASSISTANT_ERROR, str(err))
     except Exception as err:  # pylint: disable=broad-except
         connection.logger.exception(err)
-        connection.send_message(
-            messages.error_message(msg["id"], const.ERR_UNKNOWN_ERROR, str(err))
-        )
+        connection.send_error(msg["id"], const.ERR_UNKNOWN_ERROR, str(err))
 
 
 @callback
@@ -244,7 +225,7 @@ def handle_get_states(
             if entity_perm(state.entity_id, "read")
         ]
 
-    connection.send_message(messages.result_message(msg["id"], states))
+    connection.send_result(msg["id"], states)
 
 
 @decorators.websocket_command({vol.Required("type"): "get_services"})
@@ -254,7 +235,7 @@ async def handle_get_services(
 ) -> None:
     """Handle get services command."""
     descriptions = await async_get_all_descriptions(hass)
-    connection.send_message(messages.result_message(msg["id"], descriptions))
+    connection.send_result(msg["id"], descriptions)
 
 
 @callback
@@ -263,7 +244,7 @@ def handle_get_config(
     hass: HomeAssistant, connection: ActiveConnection, msg: dict[str, Any]
 ) -> None:
     """Handle get config command."""
-    connection.send_message(messages.result_message(msg["id"], hass.config.as_dict()))
+    connection.send_result(msg["id"], hass.config.as_dict())
 
 
 @decorators.websocket_command({vol.Required("type"): "manifest/list"})
@@ -417,7 +398,7 @@ def handle_entity_source(
                 if entity_perm(entity_id, "read")
             }
 
-        connection.send_message(messages.result_message(msg["id"], sources))
+        connection.send_result(msg["id"], sources)
         return
 
     sources = {}
@@ -535,7 +516,7 @@ async def handle_execute_script(
     context = connection.context(msg)
     script_obj = Script(hass, msg["sequence"], f"{const.DOMAIN} script", const.DOMAIN)
     await script_obj.async_run(msg.get("variables"), context=context)
-    connection.send_message(messages.result_message(msg["id"], {"context": context}))
+    connection.send_result(msg["id"], {"context": context})
 
 
 @decorators.websocket_command(
@@ -555,3 +536,40 @@ async def handle_fire_event(
 
     hass.bus.async_fire(msg["event_type"], msg.get("event_data"), context=context)
     connection.send_result(msg["id"], {"context": context})
+
+
+@decorators.websocket_command(
+    {
+        vol.Required("type"): "validate_config",
+        vol.Optional("trigger"): cv.match_all,
+        vol.Optional("condition"): cv.match_all,
+        vol.Optional("action"): cv.match_all,
+    }
+)
+@decorators.async_response
+async def handle_validate_config(
+    hass: HomeAssistant, connection: ActiveConnection, msg: dict[str, Any]
+) -> None:
+    """Handle validate config command."""
+    # Circular dep
+    # pylint: disable=import-outside-toplevel
+    from homeassistant.helpers import condition, script, trigger
+
+    result = {}
+
+    for key, schema, validator in (
+        ("trigger", cv.TRIGGER_SCHEMA, trigger.async_validate_trigger_config),
+        ("condition", cv.CONDITION_SCHEMA, condition.async_validate_condition_config),
+        ("action", cv.SCRIPT_SCHEMA, script.async_validate_actions_config),
+    ):
+        if key not in msg:
+            continue
+
+        try:
+            await validator(hass, schema(msg[key]))  # type: ignore
+        except vol.Invalid as err:
+            result[key] = {"valid": False, "error": str(err)}
+        else:
+            result[key] = {"valid": True, "error": None}
+
+    connection.send_result(msg["id"], result)

homeassistant/helpers/config_validation.py

@@ -1033,7 +1033,12 @@ def script_action(value: Any) -> dict:
     if not isinstance(value, dict):
         raise vol.Invalid("expected dictionary")
 
-    return ACTION_TYPE_SCHEMAS[determine_script_action(value)](value)
+    try:
+        action = determine_script_action(value)
+    except ValueError as err:
+        raise vol.Invalid(str(err))
+
+    return ACTION_TYPE_SCHEMAS[action](value)
 
 
 SCRIPT_SCHEMA = vol.All(ensure_list, [script_action])
@@ -1444,7 +1449,10 @@ def determine_script_action(action: dict[str, Any]) -> str:
     if CONF_VARIABLES in action:
         return SCRIPT_ACTION_VARIABLES
 
-    return SCRIPT_ACTION_CALL_SERVICE
+    if CONF_SERVICE in action or CONF_SERVICE_TEMPLATE in action:
+        return SCRIPT_ACTION_CALL_SERVICE
+
+    raise ValueError("Unable to determine action")
 
 
 ACTION_TYPE_SCHEMAS: dict[str, Callable[[Any], dict]] = {

tests/components/websocket_api/test_commands.py

@@ -1286,3 +1286,60 @@ async def test_integration_setup_info(hass, websocket_client, hass_admin_user):
         {"domain": "august", "seconds": 12.5},
         {"domain": "isy994", "seconds": 12.8},
     ]
+
+
+@pytest.mark.parametrize(
+    "key,config",
+    (
+        ("trigger", {"platform": "event", "event_type": "hello"}),
+        (
+            "condition",
+            {"condition": "state", "entity_id": "hello.world", "state": "paulus"},
+        ),
+        ("action", {"service": "domain_test.test_service"}),
+    ),
+)
+async def test_validate_config_works(websocket_client, key, config):
+    """Test config validation."""
+    await websocket_client.send_json({"id": 7, "type": "validate_config", key: config})
+
+    msg = await websocket_client.receive_json()
+    assert msg["id"] == 7
+    assert msg["type"] == const.TYPE_RESULT
+    assert msg["success"]
+    assert msg["result"] == {key: {"valid": True, "error": None}}
+
+
+@pytest.mark.parametrize(
+    "key,config,error",
+    (
+        (
+            "trigger",
+            {"platform": "non_existing", "event_type": "hello"},
+            "Invalid platform 'non_existing' specified",
+        ),
+        (
+            "condition",
+            {
+                "condition": "non_existing",
+                "entity_id": "hello.world",
+                "state": "paulus",
+            },
+            "Unexpected value for condition: 'non_existing'. Expected and, device, not, numeric_state, or, state, sun, template, time, trigger, zone",
+        ),
+        (
+            "action",
+            {"non_existing": "domain_test.test_service"},
+            "Unable to determine action @ data[0]",
+        ),
+    ),
+)
+async def test_validate_config_invalid(websocket_client, key, config, error):
+    """Test config validation."""
+    await websocket_client.send_json({"id": 7, "type": "validate_config", key: config})
+
+    msg = await websocket_client.receive_json()
+    assert msg["id"] == 7
+    assert msg["type"] == const.TYPE_RESULT
+    assert msg["success"]
+    assert msg["result"] == {key: {"valid": False, "error": error}}