"""Config flow for the Carefree Connects BT12 awning integration."""
from __future__ import annotations

from typing import Any

import voluptuous as vol

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

from .const import DOMAIN


class Bt12ConfigFlow(ConfigFlow, domain=DOMAIN):
    """Handle a config flow for a Carefree BT12 awning controller."""

    VERSION = 1

    def __init__(self) -> None:
        self._discovery_info: BluetoothServiceInfoBleak | None = None
        self._discovered: dict[str, str] = {}

    async def async_step_bluetooth(
        self, discovery_info: BluetoothServiceInfoBleak
    ) -> FlowResult:
        """Handle a discovered BT12 advertisement (from any Bluetooth source)."""
        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_bluetooth_confirm()

    async def async_step_bluetooth_confirm(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        assert self._discovery_info is not None
        if user_input is not None:
            return self.async_create_entry(
                title=self._discovery_info.name,
                data={
                    "address": self._discovery_info.address,
                    "name": self._discovery_info.name,
                },
            )
        return self.async_show_form(
            step_id="bluetooth_confirm",
            description_placeholders={"name": self._discovery_info.name},
        )

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> FlowResult:
        """Manual entry, plus a dropdown of any BT12 already seen advertising."""
        errors: dict[str, str] = {}
        if user_input is not None:
            address = user_input["address"]
            await self.async_set_unique_id(address, raise_on_progress=False)
            self._abort_if_unique_id_configured()
            name = self._discovered.get(address, "BT12 Awning")
            return self.async_create_entry(title=name, data={"address": address, "name": name})

        current_addresses = self._async_current_ids()
        for info in async_discovered_service_info(self.hass, connectable=True):
            if info.address in current_addresses:
                continue
            if info.name == "BT12":
                self._discovered[info.address] = info.name

        if not self._discovered:
            return self.async_show_form(
                step_id="user",
                data_schema=vol.Schema({vol.Required("address"): str}),
                errors=errors,
            )

        return self.async_show_form(
            step_id="user",
            data_schema=vol.Schema({vol.Required("address"): vol.In(self._discovered)}),
            errors=errors,
        )