"""Config flow for Adax integration."""
from __future__ import annotations

import logging
from typing import Any

import adax
import voluptuous as vol

from homeassistant import config_entries
from homeassistant.const import CONF_PASSWORD
from homeassistant.core import HomeAssistant
from homeassistant.data_entry_flow import FlowResult
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers.aiohttp_client import async_get_clientsession

from .const import ACCOUNT_ID, DOMAIN

_LOGGER = logging.getLogger(__name__)

STEP_USER_DATA_SCHEMA = vol.Schema(
    {vol.Required(ACCOUNT_ID): int, vol.Required(CONF_PASSWORD): str}
)


async def validate_input(hass: HomeAssistant, data: dict[str, Any]) -> None:
    """Validate the user input allows us to connect."""
    account_id = data[ACCOUNT_ID]
    password = data[CONF_PASSWORD].replace(" ", "")

    token = await adax.get_adax_token(
        async_get_clientsession(hass), account_id, password
    )
    if token is None:
        _LOGGER.info("Adax: Failed to login to retrieve token")
        raise CannotConnect


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

    VERSION = 1

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        """Handle the initial step."""
        if user_input is None:
            return self.async_show_form(
                step_id="user", data_schema=STEP_USER_DATA_SCHEMA
            )

        errors = {}

        await self.async_set_unique_id(user_input[ACCOUNT_ID])
        self._abort_if_unique_id_configured()

        try:
            await validate_input(self.hass, user_input)
        except CannotConnect:
            errors["base"] = "cannot_connect"
        else:
            return self.async_create_entry(
                title=user_input[ACCOUNT_ID], data=user_input
            )

        return self.async_show_form(
            step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
        )


class CannotConnect(HomeAssistantError):
    """Error to indicate we cannot connect."""