config_flow.py

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"""Config flow for kmtronic integration."""
 
from __future__ import annotations
 
import logging
from typing import Any
 
import aiohttp
from pykmtronic.auth import Auth
from pykmtronic.hub import KMTronicHubAPI
import voluptuous as vol
 
from homeassistant.config_entries import (
    ConfigEntry,
    ConfigFlow,
    ConfigFlowResult,
    OptionsFlow,
)
from homeassistant.const import CONF_HOST, CONF_PASSWORD, CONF_USERNAME
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers import aiohttp_client
 
from .const import CONF_REVERSE, DOMAIN
 
_LOGGER = logging.getLogger(__name__)
 
DATA_SCHEMA = vol.Schema(
    {
        vol.Required(CONF_HOST): str,
        vol.Required(CONF_USERNAME): str,
        vol.Required(CONF_PASSWORD): str,
    }
)
 
 
async def validate_input(hass: HomeAssistant, data):
    """Validate the user input allows us to connect."""
    session = aiohttp_client.async_get_clientsession(hass)
    auth = Auth(
        session,
        f"http://{data[CONF_HOST]}",
        data[CONF_USERNAME],
        data[CONF_PASSWORD],
    )
    hub = KMTronicHubAPI(auth)
 
    try:
        await hub.async_get_status()
    except aiohttp.client_exceptions.ClientResponseError as err:
        raise InvalidAuth from err
    except aiohttp.client_exceptions.ClientConnectorError as err:
        raise CannotConnect from err
 
    return data
 
 
class KmtronicConfigFlow(ConfigFlow, domain=DOMAIN):
    """Handle a config flow for kmtronic."""
 
    VERSION = 1
 
    @staticmethod
    @callback
    def async_get_options_flow(
        config_entry: ConfigEntry,
    ) -> KMTronicOptionsFlow:
        """Get the options flow for this handler."""
        return KMTronicOptionsFlow()
 
    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Handle the initial step."""
        errors = {}
        if user_input is not None:
            try:
                info = await validate_input(self.hass, user_input)
 
                return self.async_create_entryasync_create_entryasync_create_entry(title=info["host"], data=user_input)
            except CannotConnect:
                errors["base"] = "cannot_connect"
            except InvalidAuth:
                errors["base"] = "invalid_auth"
            except Exception:
                _LOGGER.exception("Unexpected exception")
                errors["base"] = "unknown"
 
        return self.async_show_formasync_show_formasync_show_form(
            step_id="user", data_schema=DATA_SCHEMA, errors=errors
        )
 
 
class CannotConnect(HomeAssistantError):
    """Error to indicate we cannot connect."""
 
 
class InvalidAuth(HomeAssistantError):
    """Error to indicate there is invalid auth."""
 
 
class KMTronicOptionsFlow(OptionsFlow):
    """Handle options."""
 
    async def async_step_init(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Manage the options."""
        if user_input is not None:
            return self.async_create_entryasync_create_entry(title="", data=user_input)
 
        return self.async_show_formasync_show_form(
            step_id="init",
            data_schema=vol.Schema(
                {
                    vol.Optional(
                        CONF_REVERSE,
                        default=self.config_entryconfig_entryconfig_entry.options.get(CONF_REVERSE),
                    ): bool,
                }
            ),
        )