Add honeywell config flow (#50731)

* Upgrade honeywell from platform to integration

* Add codeowner and run code formatter

* Add sensors for current indoor temp and humidity

* Fix tests and away temp

* Spring cleaning of honeywell tests

* Add config flow to honeywell integration

* Add config flow test

* Tie in honeywell service update

* Simplify config flow and add import

* Remove unnecessary platform schema

* Clean up based on PR comments

* Use new helper method

* Force single device and fix linter errors

* Address PR feedback

* Update translations

* Change string key and remove logger message

* Always add first device

* Fix test assertion

* Put PLATFORM_SCHEMA back

* Skip code coverage check on honeywell init

* add some tests for honeywell

* Make retry async

* Make device private

* Use _attr_ instead of properties

* Code cleanup from PR feedback

* Fix test and cleanup code

* Make description better

Co-authored-by: Matt Zimmerman <mdz@alcor.net>

homeassistant/components/honeywell/config_flow.py

@@ -0,0 +1,55 @@
+"""Config flow to configure the honeywell integration."""
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.components.honeywell import get_somecomfort_client
+from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
+
+from .const import CONF_COOL_AWAY_TEMPERATURE, CONF_HEAT_AWAY_TEMPERATURE, DOMAIN
+
+
+class HoneywellConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a honeywell config flow."""
+
+    VERSION = 1
+
+    async def async_step_user(self, user_input=None):
+        """Create config entry. Show the setup form to the user."""
+        errors = {}
+
+        if user_input is not None:
+            valid = await self.is_valid(**user_input)
+            if valid:
+                return self.async_create_entry(
+                    title=DOMAIN,
+                    data=user_input,
+                )
+
+            errors["base"] = "invalid_auth"
+
+        data_schema = {
+            vol.Required(CONF_USERNAME): str,
+            vol.Required(CONF_PASSWORD): str,
+        }
+        return self.async_show_form(
+            step_id="user", data_schema=vol.Schema(data_schema), errors=errors
+        )
+
+    async def is_valid(self, **kwargs) -> bool:
+        """Check if login credentials are valid."""
+        client = await self.hass.async_add_executor_job(
+            get_somecomfort_client, kwargs[CONF_USERNAME], kwargs[CONF_PASSWORD]
+        )
+
+        return client is not None
+
+    async def async_step_import(self, import_data):
+        """Import entry from configuration.yaml."""
+        return await self.async_step_user(
+            {
+                CONF_USERNAME: import_data[CONF_USERNAME],
+                CONF_PASSWORD: import_data[CONF_PASSWORD],
+                CONF_COOL_AWAY_TEMPERATURE: import_data[CONF_COOL_AWAY_TEMPERATURE],
+                CONF_HEAT_AWAY_TEMPERATURE: import_data[CONF_HEAT_AWAY_TEMPERATURE],
+            }
+        )