"""Config flow for Rachio integration."""

from __future__ import annotations

from http import HTTPStatus
import logging
from typing import Any

from rachiopy import Rachio
from requests.exceptions import ConnectTimeout
import voluptuous as vol

from homeassistant.components import zeroconf
from homeassistant.config_entries import (
    ConfigEntry,
    ConfigFlow,
    ConfigFlowResult,
    OptionsFlow,
)
from homeassistant.const import CONF_API_KEY
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import HomeAssistantError

from .const import (
    CONF_MANUAL_RUN_MINS,
    DEFAULT_MANUAL_RUN_MINS,
    DOMAIN,
    KEY_ID,
    KEY_STATUS,
    KEY_USERNAME,
)

_LOGGER = logging.getLogger(__name__)

DATA_SCHEMA = vol.Schema({vol.Required(CONF_API_KEY): str}, extra=vol.ALLOW_EXTRA)


async def validate_input(hass: HomeAssistant, data):
    """Validate the user input allows us to connect.

    Data has the keys from DATA_SCHEMA with values provided by the user.
    """
    rachio = Rachio(data[CONF_API_KEY])
    username = None
    try:
        data = await hass.async_add_executor_job(rachio.person.info)
        _LOGGER.debug("rachio.person.getInfo: %s", data)
        if int(data[0][KEY_STATUS]) != HTTPStatus.OK:
            raise InvalidAuth

        rachio_id = data[1][KEY_ID]
        data = await hass.async_add_executor_job(rachio.person.get, rachio_id)
        _LOGGER.debug("rachio.person.get: %s", data)
        if int(data[0][KEY_STATUS]) != HTTPStatus.OK:
            raise CannotConnect

        username = data[1][KEY_USERNAME]
    except ConnectTimeout as error:
        _LOGGER.error("Could not reach the Rachio API: %s", error)
        raise CannotConnect from error

    # Return info that you want to store in the config entry.
    return {"title": username}


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

    VERSION = 1

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Handle the initial step."""
        errors = {}
        if user_input is not None:
            await self.async_set_unique_id(user_input[CONF_API_KEY])
            self._abort_if_unique_id_configured()
            try:
                info = await validate_input(self.hass, user_input)
                return self.async_create_entry(title=info["title"], data=user_input)
            except CannotConnect:
                errors["base"] = "cannot_connect"
            except InvalidAuth:
                errors["base"] = "invalid_auth"
            except Exception:
                _LOGGER.exception("Unexpected exception")
                errors["base"] = "unknown"

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

    async def async_step_homekit(
        self, discovery_info: zeroconf.ZeroconfServiceInfo
    ) -> ConfigFlowResult:
        """Handle HomeKit discovery."""
        self._async_abort_entries_match()
        await self.async_set_unique_id(
            discovery_info.properties[zeroconf.ATTR_PROPERTIES_ID]
        )
        self._abort_if_unique_id_configured()
        return await self.async_step_user()

    @staticmethod
    @callback
    def async_get_options_flow(
        config_entry: ConfigEntry,
    ) -> OptionsFlowHandler:
        """Get the options flow for this handler."""
        return OptionsFlowHandler()


class OptionsFlowHandler(OptionsFlow):
    """Handle a option flow for Rachio."""

    async def async_step_init(
        self, user_input: dict[str, int] | None = None
    ) -> ConfigFlowResult:
        """Handle options flow."""
        if user_input is not None:
            return self.async_create_entry(title="", data=user_input)

        data_schema = vol.Schema(
            {
                vol.Optional(
                    CONF_MANUAL_RUN_MINS,
                    default=self.config_entry.options.get(
                        CONF_MANUAL_RUN_MINS, DEFAULT_MANUAL_RUN_MINS
                    ),
                ): int
            }
        )
        return self.async_show_form(step_id="init", data_schema=data_schema)


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


class InvalidAuth(HomeAssistantError):
    """Error to indicate there is invalid auth."""