"""UI configuration flow for GREE Controller."""

from __future__ import annotations

from typing import Any

import voluptuous as vol

from homeassistant import config_entries
from homeassistant.helpers.aiohttp_client import async_get_clientsession

from .api import GreeControllerApiError, GreeControllerClient
from .const import CONF_TOKEN, CONF_URL, DOMAIN


class GreeControllerConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
    """Configure a standalone GREE Controller instance."""

    VERSION = 1

    async def async_step_user(self, user_input: dict[str, Any] | None = None):
        """Handle the initial connection form."""
        errors: dict[str, str] = {}
        if user_input is not None:
            url = str(user_input[CONF_URL]).strip().rstrip("/")
            token = str(user_input[CONF_TOKEN]).strip()
            client = GreeControllerClient(async_get_clientsession(self.hass), url, token)
            try:
                await client.devices()
            except GreeControllerApiError as err:
                errors["base"] = "invalid_auth" if "authentication" in str(err).lower() else "cannot_connect"
            else:
                await self.async_set_unique_id("gree-controller")
                self._abort_if_unique_id_configured()
                return self.async_create_entry(
                    title="GREE Controller",
                    data={CONF_URL: url, CONF_TOKEN: token},
                )

        schema = vol.Schema(
            {
                vol.Required(CONF_URL, default="http://gree-controller:8787"): str,
                vol.Required(CONF_TOKEN): str,
            }
        )
        return self.async_show_form(step_id="user", data_schema=schema, errors=errors)