Add Z-Wave USB migration confirm step (home-assistant#149243)

Author: MartinHjelmare

homeassistant/components/zwave_js/config_flow.py

@@ -495,10 +495,23 @@ async def async_step_usb(self, discovery_info: UsbServiceInfo) -> ConfigFlowResu
 
         self._usb_discovery = True
         if current_config_entries:
-            return await self.async_step_intent_migrate()
+            return await self.async_step_confirm_usb_migration()
 
         return await self.async_step_installation_type()
 
+    async def async_step_confirm_usb_migration(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Confirm USB migration."""
+        if user_input is not None:
+            return await self.async_step_intent_migrate()
+        return self.async_show_form(
+            step_id="confirm_usb_migration",
+            description_placeholders={
+                "usb_title": self.context["title_placeholders"][CONF_NAME],
+            },
+        )
+
     async def async_step_manual(
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:

homeassistant/components/zwave_js/strings.json

@@ -108,6 +108,10 @@
       "start_addon": {
         "title": "Configuring add-on"
       },
+      "confirm_usb_migration": {
+        "description": "You are about to migrate your Z-Wave network from the old adapter to the new adapter {usb_title}. This will take a backup of the network from the old adapter and restore the network to the new adapter.\n\nPress Submit to continue with the migration.",
+        "title": "Migrate to a new adapter"
+      },
       "zeroconf_confirm": {
         "description": "Do you want to add the Z-Wave Server with home ID {home_id} found at {url} to Home Assistant?",
         "title": "Discovered Z-Wave Server"

tests/components/zwave_js/test_config_flow.py

@@ -932,6 +932,11 @@ async def mock_restore_nvm(data: bytes, options: dict[str, bool] | None = None):
 
     assert mock_usb_serial_by_id.call_count == 2
 
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "confirm_usb_migration"
+
+    result = await hass.config_entries.flow.async_configure(result["flow_id"], {})
+
     assert result["type"] is FlowResultType.SHOW_PROGRESS
     assert result["step_id"] == "backup_nvm"
 
@@ -1049,6 +1054,11 @@ async def mock_restore_nvm(data: bytes, options: dict[str, bool] | None = None):
 
     assert mock_usb_serial_by_id.call_count == 2
 
+    assert result["type"] is FlowResultType.FORM
+    assert result["step_id"] == "confirm_usb_migration"
+
+    result = await hass.config_entries.flow.async_configure(result["flow_id"], {})
+
     assert result["type"] is FlowResultType.SHOW_PROGRESS
     assert result["step_id"] == "backup_nvm"