"""Config flow for Gogogate2."""

from __future__ import annotations

import dataclasses
import logging
import re
from typing import Any, Self

from ismartgate.common import AbstractInfoResponse, ApiError
from ismartgate.const import GogoGate2ApiErrorCode, ISmartGateApiErrorCode
import voluptuous as vol

from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
from homeassistant.const import (
    CONF_DEVICE,
    CONF_IP_ADDRESS,
    CONF_PASSWORD,
    CONF_USERNAME,
)
from homeassistant.data_entry_flow import AbortFlow
from homeassistant.helpers.service_info.dhcp import DhcpServiceInfo
from homeassistant.helpers.service_info.zeroconf import (
    ATTR_PROPERTIES_ID,
    ZeroconfServiceInfo,
)

from .common import get_api
from .const import DEVICE_TYPE_GOGOGATE2, DEVICE_TYPE_ISMARTGATE, DOMAIN

_LOGGER = logging.getLogger(__name__)

DEVICE_NAMES = {
    DEVICE_TYPE_GOGOGATE2: "Gogogate2",
    DEVICE_TYPE_ISMARTGATE: "ismartgate",
}


class Gogogate2FlowHandler(ConfigFlow, domain=DOMAIN):
    """Gogogate2 config flow."""

    VERSION = 1

    def __init__(self) -> None:
        """Initialize the config flow."""
        self._ip_address: str | None = None
        self._device_type: str | None = None

    async def async_step_homekit(
        self, discovery_info: ZeroconfServiceInfo
    ) -> ConfigFlowResult:
        """Handle homekit discovery."""
        await self.async_set_unique_id(discovery_info.properties[ATTR_PROPERTIES_ID])
        return await self._async_discovery_handler(discovery_info.host)

    async def async_step_dhcp(
        self, discovery_info: DhcpServiceInfo
    ) -> ConfigFlowResult:
        """Handle dhcp discovery."""
        await self.async_set_unique_id(discovery_info.macaddress)
        return await self._async_discovery_handler(discovery_info.ip)

    async def _async_discovery_handler(self, ip_address: str) -> ConfigFlowResult:
        """Start the user flow from any discovery."""
        self._abort_if_unique_id_configured({CONF_IP_ADDRESS: ip_address})

        self._async_abort_entries_match({CONF_IP_ADDRESS: ip_address})

        self._ip_address = ip_address
        if self.hass.config_entries.flow.async_has_matching_flow(self):
            raise AbortFlow("already_in_progress")

        self._device_type = DEVICE_TYPE_ISMARTGATE
        return await self.async_step_user()

    def is_matching(self, other_flow: Self) -> bool:
        """Return True if other_flow is matching this flow."""
        return other_flow._ip_address == self._ip_address  # noqa: SLF001

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

        if user_input:
            api = get_api(self.hass, user_input)
            try:
                data: AbstractInfoResponse = await api.async_info()
                data_dict = dataclasses.asdict(data)
                title = data_dict.get(
                    "gogogatename", data_dict.get("ismartgatename", "Cover")
                )
                await self.async_set_unique_id(re.sub("\\..*$", "", data.remoteaccess))
                return self.async_create_entry(title=title, data=user_input)

            except ApiError as api_error:
                device_type = user_input[CONF_DEVICE]
                is_invalid_auth = (
                    device_type == DEVICE_TYPE_GOGOGATE2
                    and api_error.code
                    in (
                        GogoGate2ApiErrorCode.CREDENTIALS_NOT_SET,
                        GogoGate2ApiErrorCode.CREDENTIALS_INCORRECT,
                    )
                ) or (
                    device_type == DEVICE_TYPE_ISMARTGATE
                    and api_error.code
                    in (
                        ISmartGateApiErrorCode.CREDENTIALS_NOT_SET,
                        ISmartGateApiErrorCode.CREDENTIALS_INCORRECT,
                    )
                )

                if is_invalid_auth:
                    errors["base"] = "invalid_auth"
                else:
                    errors["base"] = "cannot_connect"

            except Exception:
                _LOGGER.exception("Unexpected exception")
                errors["base"] = "cannot_connect"

        if self._ip_address and self._device_type:
            self.context["title_placeholders"] = {
                CONF_DEVICE: DEVICE_NAMES[self._device_type],
                CONF_IP_ADDRESS: self._ip_address,
            }
        return self.async_show_form(
            step_id="user",
            data_schema=vol.Schema(
                {
                    vol.Required(
                        CONF_DEVICE,
                        default=self._device_type
                        or user_input.get(CONF_DEVICE, DEVICE_TYPE_GOGOGATE2),
                    ): vol.In((DEVICE_TYPE_GOGOGATE2, DEVICE_TYPE_ISMARTGATE)),
                    vol.Required(
                        CONF_IP_ADDRESS,
                        default=user_input.get(CONF_IP_ADDRESS, self._ip_address),
                    ): str,
                    vol.Required(
                        CONF_USERNAME, default=user_input.get(CONF_USERNAME, "")
                    ): str,
                    vol.Required(
                        CONF_PASSWORD, default=user_input.get(CONF_PASSWORD, "")
                    ): str,
                }
            ),
            errors=errors,
        )