Make sure zwave nodes/entities enter the registry is proper state. (#14251)

* When zwave node's info is parsed remove it and re-add back.

* Delay value entity if not ready

* If node is ready consider it parsed even if manufacturer/product are missing.

* Add annotations

homeassistant/components/zwave/util.py

@@ -1,6 +1,9 @@
 """Zwave util methods."""
+import asyncio
 import logging
 
+import homeassistant.util.dt as dt_util
+
 from . import const
 
 _LOGGER = logging.getLogger(__name__)
@@ -67,3 +70,23 @@ def node_name(node):
     """Return the name of the node."""
     return node.name or '{} {}'.format(
         node.manufacturer_name, node.product_name)
+
+
+async def check_has_unique_id(entity, ready_callback, timeout_callback, loop):
+    """Wait for entity to have unique_id."""
+    start_time = dt_util.utcnow()
+    while True:
+        waited = int((dt_util.utcnow()-start_time).total_seconds())
+        if entity.unique_id:
+            ready_callback(waited)
+            return
+        elif waited >= const.NODE_READY_WAIT_SECS:
+            # Wait up to NODE_READY_WAIT_SECS seconds for unique_id to appear.
+            timeout_callback(waited)
+            return
+        await asyncio.sleep(1, loop=loop)
+
+
+def is_node_parsed(node):
+    """Check whether the node has been parsed or still waiting to be parsed."""
+    return node.manufacturer_name and node.product_name