config_flow.py

Go to the documentation of this file.

"""Config flow for Nightscout integration."""
 
import logging
from typing import Any
 
from aiohttp import ClientError, ClientResponseError
from py_nightscout import Api as NightscoutAPI
import voluptuous as vol
 
from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
from homeassistant.const import CONF_API_KEY, CONF_URL
from homeassistant.exceptions import HomeAssistantError
 
from .const import DOMAIN
from .utils import hash_from_url
 
_LOGGER = logging.getLogger(__name__)
 
DATA_SCHEMA = vol.Schema({vol.Required(CONF_URL): str, vol.Optional(CONF_API_KEY): str})
 
 
async def _validate_input(data: dict[str, Any]) -> dict[str, str]:
    """Validate the user input allows us to connect."""
    url: str = data[CONF_URL]
    api_key: str | None = data.get(CONF_API_KEY)
    try:
        api = NightscoutAPI(url, api_secret=api_key)
        status = await api.get_server_status()
        if status.settings.get("authDefaultRoles") == "status-only":
            await api.get_sgvs()
    except ClientResponseError as error:
        raise InputValidationError("invalid_auth") from error
    except (ClientError, TimeoutError, OSError) as error:
        raise InputValidationError("cannot_connect") from error
 
    # Return info to be stored in the config entry.
    return {"title": status.name}
 
 
class NightscoutConfigFlow(ConfigFlow, domain=DOMAIN):
    """Handle a config flow for Nightscout."""
 
    VERSION = 1
 
    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Handle the initial step."""
        errors: dict[str, str] = {}
 
        if user_input is not None:
            unique_id = hash_from_url(user_input[CONF_URL])
            await self.async_set_unique_idasync_set_unique_id(unique_id)
            self._abort_if_unique_id_configured_abort_if_unique_id_configured()
            try:
                info = await _validate_input(user_input)
            except InputValidationError as error:
                errors["base"] = error.base
            except Exception:
                _LOGGER.exception("Unexpected exception")
                errors["base"] = "unknown"
            else:
                return self.async_create_entryasync_create_entryasync_create_entry(title=info["title"], data=user_input)
 
        return self.async_show_formasync_show_formasync_show_form(
            step_id="user", data_schema=DATA_SCHEMA, errors=errors
        )
 
 
class InputValidationError(HomeAssistantError):
    """Error to indicate we cannot proceed due to invalid input."""
 
    def __init__(self, base: str) -> None:
        """Initialize with error base."""
        super().__init__()
        self.basebase = base