casait-has/custom_components/smart_home/config_flow.py

"""Config flow for Smart Home integration."""
from __future__ import annotations

import logging
from typing import Any

import voluptuous as vol
import aiohttp

from homeassistant import config_entries
from homeassistant.const import CONF_HOST, CONF_PORT, CONF_NAME
from homeassistant.data_entry_flow import FlowResult
import homeassistant.helpers.config_validation as cv

from .const import DOMAIN, DEFAULT_PORT, STEP_USER

_LOGGER = logging.getLogger(__name__)

class SmartHomeConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
    """Handle a config flow for Smart Home."""

    VERSION = 1

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        """Handle the initial step."""
        errors = {}

        if user_input is not None:
            try:
                # Test connection to API
                async with aiohttp.ClientSession() as session:
                    url = f"http://{user_input[CONF_HOST]}:{user_input[CONF_PORT]}"
                    async with session.get(f"{url}/") as response:
                        if response.status == 200:
                            return self.async_create_entry(
                                title=user_input[CONF_NAME],
                                data=user_input,
                            )
                        else:
                            errors["base"] = "cannot_connect"
            except aiohttp.ClientError:
                errors["base"] = "cannot_connect"
            except Exception:  # pylint: disable=broad-except
                _LOGGER.exception("Unexpected exception")
                errors["base"] = "unknown"

        return self.async_show_form(
            step_id=STEP_USER,
            data_schema=vol.Schema(
                {
                    vol.Required(CONF_NAME): str,
                    vol.Required(CONF_HOST): str,
                    vol.Required(CONF_PORT, default=DEFAULT_PORT): int,
                }
            ),
            errors=errors,
        )