"""Config flow for Electric Kiwi."""
from __future__ import annotations

from collections.abc import Mapping
import logging
from typing import Any

from homeassistant.config_entries import ConfigEntry
from homeassistant.data_entry_flow import FlowResult
from homeassistant.helpers import config_entry_oauth2_flow

from .const import DOMAIN, SCOPE_VALUES


class ElectricKiwiOauth2FlowHandler(
    config_entry_oauth2_flow.AbstractOAuth2FlowHandler, domain=DOMAIN
):
    """Config flow to handle Electric Kiwi OAuth2 authentication."""

    DOMAIN = DOMAIN

    def __init__(self) -> None:
        """Set up instance."""
        super().__init__()
        self._reauth_entry: ConfigEntry | None = None

    @property
    def logger(self) -> logging.Logger:
        """Return logger."""
        return logging.getLogger(__name__)

    @property
    def extra_authorize_data(self) -> dict[str, Any]:
        """Extra data that needs to be appended to the authorize url."""
        return {"scope": SCOPE_VALUES}

    async def async_step_reauth(self, entry_data: Mapping[str, Any]) -> FlowResult:
        """Perform reauth upon an API authentication error."""
        self._reauth_entry = self.hass.config_entries.async_get_entry(
            self.context["entry_id"]
        )
        return await self.async_step_reauth_confirm()

    async def async_step_reauth_confirm(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        """Dialog that informs the user that reauth is required."""
        if user_input is None:
            return self.async_show_form(step_id="reauth_confirm")
        return await self.async_step_user()

    async def async_oauth_create_entry(self, data: dict) -> FlowResult:
        """Create an entry for Electric Kiwi."""
        existing_entry = await self.async_set_unique_id(DOMAIN)
        if existing_entry:
            self.hass.config_entries.async_update_entry(existing_entry, data=data)
            await self.hass.config_entries.async_reload(existing_entry.entry_id)
            return self.async_abort(reason="reauth_successful")
        return await super().async_oauth_create_entry(data)
