"""Adds config flow for AccuWeather."""

from __future__ import annotations

from asyncio import timeout
from collections.abc import Mapping
from typing import Any

from accuweather import AccuWeather, ApiError, InvalidApiKeyError, RequestsExceededError
from aiohttp import ClientError
from aiohttp.client_exceptions import ClientConnectorError
import voluptuous as vol

from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
from homeassistant.const import CONF_API_KEY, CONF_LATITUDE, CONF_LONGITUDE, CONF_NAME
from homeassistant.helpers import config_validation as cv
from homeassistant.helpers.aiohttp_client import async_get_clientsession

from .const import DOMAIN


class AccuWeatherFlowHandler(ConfigFlow, domain=DOMAIN):
    """Config flow for AccuWeather."""

    VERSION = 1
    _latitude: float | None = None
    _longitude: float | None = None

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Handle a flow initialized by the user."""
        errors = {}

        if user_input is not None:
            websession = async_get_clientsession(self.hass)
            try:
                async with timeout(10):
                    accuweather = AccuWeather(
                        user_input[CONF_API_KEY],
                        websession,
                        latitude=user_input[CONF_LATITUDE],
                        longitude=user_input[CONF_LONGITUDE],
                    )
                    await accuweather.async_get_location()
            except (ApiError, ClientConnectorError, TimeoutError, ClientError):
                errors["base"] = "cannot_connect"
            except InvalidApiKeyError:
                errors[CONF_API_KEY] = "invalid_api_key"
            except RequestsExceededError:
                errors[CONF_API_KEY] = "requests_exceeded"
            else:
                await self.async_set_unique_id(
                    accuweather.location_key, raise_on_progress=False
                )
                self._abort_if_unique_id_configured()

                return self.async_create_entry(
                    title=user_input[CONF_NAME], data=user_input
                )

        return self.async_show_form(
            step_id="user",
            data_schema=vol.Schema(
                {
                    vol.Required(CONF_API_KEY): str,
                    vol.Optional(
                        CONF_LATITUDE, default=self.hass.config.latitude
                    ): cv.latitude,
                    vol.Optional(
                        CONF_LONGITUDE, default=self.hass.config.longitude
                    ): cv.longitude,
                    vol.Optional(
                        CONF_NAME, default=self.hass.config.location_name
                    ): str,
                }
            ),
            errors=errors,
        )

    async def async_step_reauth(
        self, entry_data: Mapping[str, Any]
    ) -> ConfigFlowResult:
        """Handle configuration by re-auth."""
        self._latitude = entry_data[CONF_LATITUDE]
        self._longitude = entry_data[CONF_LONGITUDE]

        return await self.async_step_reauth_confirm()

    async def async_step_reauth_confirm(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Dialog that informs the user that reauth is required."""
        errors: dict[str, str] = {}

        if user_input is not None:
            websession = async_get_clientsession(self.hass)
            try:
                async with timeout(10):
                    accuweather = AccuWeather(
                        user_input[CONF_API_KEY],
                        websession,
                        latitude=self._latitude,
                        longitude=self._longitude,
                    )
                    await accuweather.async_get_location()
            except (ApiError, ClientConnectorError, TimeoutError, ClientError):
                errors["base"] = "cannot_connect"
            except InvalidApiKeyError:
                errors["base"] = "invalid_api_key"
            except RequestsExceededError:
                errors["base"] = "requests_exceeded"
            else:
                return self.async_update_reload_and_abort(
                    self._get_reauth_entry(), data_updates=user_input
                )

        return self.async_show_form(
            step_id="reauth_confirm",
            data_schema=vol.Schema({vol.Required(CONF_API_KEY): str}),
            errors=errors,
        )