Fix bad access to UniFi runtime_data when not assigned (#121725)

* Fix bad access to runtime_data when not assigned

* Fix review comment

* Clean up if statements

homeassistant/components/unifi/config_flow.py

@@ -164,13 +164,12 @@ class UnifiFlowHandler(ConfigFlow, domain=UNIFI_DOMAIN):
                 config_entry = self.reauth_config_entry
                 abort_reason = "reauth_successful"
 
-            if (
-                config_entry is not None
-                and config_entry.state is not ConfigEntryState.NOT_LOADED
-            ):
-                hub = config_entry.runtime_data
-
-                if hub and hub.available:
+            if config_entry:
+                if (
+                    config_entry.state is ConfigEntryState.LOADED
+                    and (hub := config_entry.runtime_data)
+                    and hub.available
+                ):
                     return self.async_abort(reason="already_configured")
 
                 return self.async_update_reload_and_abort(

tests/components/unifi/test_config_flow.py

@@ -1,5 +1,6 @@
 """Test UniFi Network config flow."""
 
+from collections.abc import Callable
 import socket
 from unittest.mock import PropertyMock, patch
 
@@ -338,6 +339,44 @@ async def test_reauth_flow_update_configuration(
     assert config_entry.data[CONF_PASSWORD] == "new_pass"
 
 
+async def test_reauth_flow_update_configuration_on_not_loaded_entry(
+    hass: HomeAssistant, config_entry_factory: Callable[[], ConfigEntry]
+) -> None:
+    """Verify reauth flow can update hub configuration on a not loaded entry."""
+    with patch("aiounifi.Controller.login", side_effect=aiounifi.errors.RequestError):
+        config_entry = await config_entry_factory()
+
+    result = await hass.config_entries.flow.async_init(
+        UNIFI_DOMAIN,
+        context={
+            "source": SOURCE_REAUTH,
+            "unique_id": config_entry.unique_id,
+            "entry_id": config_entry.entry_id,
+        },
+        data=config_entry.data,
+    )
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "user"
+
+    result = await hass.config_entries.flow.async_configure(
+        result["flow_id"],
+        user_input={
+            CONF_HOST: "1.2.3.4",
+            CONF_USERNAME: "new_name",
+            CONF_PASSWORD: "new_pass",
+            CONF_PORT: 1234,
+            CONF_VERIFY_SSL: True,
+        },
+    )
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reauth_successful"
+    assert config_entry.data[CONF_HOST] == "1.2.3.4"
+    assert config_entry.data[CONF_USERNAME] == "new_name"
+    assert config_entry.data[CONF_PASSWORD] == "new_pass"
+
+
 @pytest.mark.parametrize("client_payload", [CLIENTS])
 @pytest.mark.parametrize("device_payload", [DEVICES])
 @pytest.mark.parametrize("wlan_payload", [WLANS])