Add Tado reconfigure step (#115970)

Co-authored-by: Matthias Alphart <farmio@alphart.net>

homeassistant/components/tado/config_flow.py

@@ -74,6 +74,7 @@ class TadoConfigFlow(ConfigFlow, domain=DOMAIN):
     """Handle a config flow for Tado."""
 
     VERSION = 1
+    config_entry: ConfigEntry | None
 
     async def async_step_user(
         self, user_input: dict[str, Any] | None = None
@@ -159,6 +160,56 @@ class TadoConfigFlow(ConfigFlow, domain=DOMAIN):
             },
         )
 
+    async def async_step_reconfigure(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle a reconfiguration flow initialized by the user."""
+        self.config_entry = self.hass.config_entries.async_get_entry(
+            self.context["entry_id"]
+        )
+        return await self.async_step_reconfigure_confirm()
+
+    async def async_step_reconfigure_confirm(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle a reconfiguration flow initialized by the user."""
+        errors: dict[str, str] = {}
+        assert self.config_entry
+
+        if user_input is not None:
+            user_input[CONF_USERNAME] = self.config_entry.data[CONF_USERNAME]
+            try:
+                await validate_input(self.hass, user_input)
+            except CannotConnect:
+                errors["base"] = "cannot_connect"
+            except PyTado.exceptions.TadoWrongCredentialsException:
+                errors["base"] = "invalid_auth"
+            except NoHomes:
+                errors["base"] = "no_homes"
+            except Exception:  # pylint: disable=broad-except
+                _LOGGER.exception("Unexpected exception")
+                errors["base"] = "unknown"
+
+            if not errors:
+                return self.async_update_reload_and_abort(
+                    self.config_entry,
+                    data={**self.config_entry.data, **user_input},
+                    reason="reconfigure_successful",
+                )
+
+        return self.async_show_form(
+            step_id="reconfigure_confirm",
+            data_schema=vol.Schema(
+                {
+                    vol.Required(CONF_PASSWORD): str,
+                }
+            ),
+            errors=errors,
+            description_placeholders={
+                CONF_USERNAME: self.config_entry.data[CONF_USERNAME]
+            },
+        )
+
     @staticmethod
     @callback
     def async_get_options_flow(

homeassistant/components/tado/strings.json

@@ -1,7 +1,8 @@
 {
   "config": {
     "abort": {
-      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]",
+      "reconfigure_successful": "[%key:common::config_flow::abort::reconfigure_successful%]"
     },
     "step": {
       "user": {
@@ -10,6 +11,16 @@
           "username": "[%key:common::config_flow::data::username%]"
         },
         "title": "Connect to your Tado account"
+      },
+      "reconfigure_confirm": {
+        "title": "Reconfigure your Tado",
+        "description": "Reconfigure the entry, for your account: `{username}`.",
+        "data": {
+          "password": "[%key:common::config_flow::data::password%]"
+        },
+        "data_description": {
+          "password": "Enter the (new) password for Tado."
+        }
       }
     },
     "error": {

tests/components/tado/test_config_flow.py

@@ -10,6 +10,7 @@ import requests
 
 from homeassistant import config_entries
 from homeassistant.components import zeroconf
+from homeassistant.components.tado.config_flow import NoHomes
 from homeassistant.components.tado.const import (
     CONF_FALLBACK,
     CONST_OVERLAY_TADO_DEFAULT,
@@ -409,3 +410,83 @@ async def test_import_step_unique_id_configured(hass: HomeAssistant) -> None:
     assert result["type"] is FlowResultType.ABORT
     assert result["reason"] == "already_configured"
     assert mock_setup_entry.call_count == 0
+
+
+@pytest.mark.parametrize(
+    ("exception", "error"),
+    [
+        (PyTado.exceptions.TadoWrongCredentialsException, "invalid_auth"),
+        (RuntimeError, "cannot_connect"),
+        (NoHomes, "no_homes"),
+        (ValueError, "unknown"),
+    ],
+)
+async def test_reconfigure_flow(
+    hass: HomeAssistant, exception: Exception, error: str
+) -> None:
+    """Test re-configuration flow."""
+    entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            "username": "test-username",
+            "password": "test-password",
+            "home_id": 1,
+        },
+        unique_id="unique_id",
+    )
+    entry.add_to_hass(hass)
+
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN,
+        context={
+            "source": config_entries.SOURCE_RECONFIGURE,
+            "entry_id": entry.entry_id,
+        },
+    )
+
+    assert result["type"] is FlowResultType.FORM
+
+    with patch(
+        "homeassistant.components.tado.config_flow.Tado",
+        side_effect=exception,
+    ):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                CONF_PASSWORD: "test-password",
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result["type"] is FlowResultType.FORM
+    assert result["errors"] == {"base": error}
+
+    mock_tado_api = _get_mock_tado_api(getMe={"homes": [{"id": 1, "name": "myhome"}]})
+    with (
+        patch(
+            "homeassistant.components.tado.config_flow.Tado",
+            return_value=mock_tado_api,
+        ),
+        patch(
+            "homeassistant.components.tado.async_setup_entry",
+            return_value=True,
+        ),
+    ):
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {
+                CONF_PASSWORD: "test-password",
+            },
+        )
+        await hass.async_block_till_done()
+
+    assert result["type"] is FlowResultType.ABORT
+    assert result["reason"] == "reconfigure_successful"
+    entry = hass.config_entries.async_get_entry(entry.entry_id)
+    assert entry
+    assert entry.title == "Mock Title"
+    assert entry.data == {
+        "username": "test-username",
+        "password": "test-password",
+        "home_id": 1,
+    }