"""Bluetti Bluetooth Config Flow"""

from __future__ import annotations

import logging

import voluptuous as vol

from homeassistant import config_entries
from homeassistant.components.bluetooth import (
    BluetoothServiceInfoBleak,
    async_discovered_service_info,
)
from homeassistant.const import CONF_ADDRESS
from homeassistant.data_entry_flow import FlowResult

from .const import DOMAIN

_LOGGER = logging.getLogger(__name__)


class BluettiConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
    """Handle config flow for Bluetti BT devices."""

    def __init__(self) -> None:
        _LOGGER.info("Initialize config flow")
        self._discovery_info: BluetoothServiceInfoBleak | None = None
        self._discovered_devices: dict[str, BluetoothServiceInfoBleak] = {}

    async def async_step_bluetooth(
        self, discovery_info: BluetoothServiceInfoBleak
    ) -> FlowResult:
        """Handle bluetooth discovery."""
        await self.async_set_unique_id(discovery_info.address)
        self._abort_if_unique_id_configured()
        self._discovery_info = discovery_info
        self.context["title_placeholders"] = {"name": discovery_info.name}
        return await self.async_step_user()

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        """Handle user input."""

        if user_input is not None:
            address = user_input[CONF_ADDRESS]
            discovery_info = self._discovered_devices[address]
            await self.async_set_unique_id(address, raise_on_progress=False)
            self._abort_if_unique_id_configured()
            return self.async_create_entry(
                title=discovery_info.name,
                data={
                    CONF_ADDRESS: discovery_info.address,
                },
            )

        if discovery := self._discovery_info:
            self._discovered_devices[discovery.address] = discovery
        else:
            current_addresses = self._async_current_ids()
            for discovery in async_discovered_service_info(self.hass):
                address = discovery.address
                if address in current_addresses or address in self._discovered_devices:
                    continue
                self._discovered_devices[discovery.address] = discovery

        if not self._discovered_devices:
            return self.async_abort(reason="no_unconfigured_devices")

        data_schema = vol.Schema(
            {
                vol.Required(CONF_ADDRESS): vol.In(
                    {
                        service_info.address: service_info.name
                        for service_info in self._discovered_devices.values()
                    }
                ),
            }
        )
        return self.async_show_form(
            step_id="user",
            data_schema=data_schema,
        )