"""Config flow for Mikrotik."""

from __future__ import annotations

from collections.abc import Mapping
from typing import Any

import voluptuous as vol

from homeassistant.config_entries import (
    ConfigEntry,
    ConfigFlow,
    ConfigFlowResult,
    OptionsFlow,
)
from homeassistant.const import (
    CONF_HOST,
    CONF_PASSWORD,
    CONF_PORT,
    CONF_USERNAME,
    CONF_VERIFY_SSL,
)
from homeassistant.core import callback

from .const import (
    CONF_ARP_PING,
    CONF_DETECTION_TIME,
    CONF_FORCE_DHCP,
    DEFAULT_API_PORT,
    DEFAULT_DETECTION_TIME,
    DEFAULT_NAME,
    DOMAIN,
)
from .coordinator import get_api
from .errors import CannotConnect, LoginError


class MikrotikFlowHandler(ConfigFlow, domain=DOMAIN):
    """Handle a Mikrotik config flow."""

    VERSION = 1

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

    async def async_step_user(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Handle a flow initialized by the user."""
        errors = {}
        if user_input is not None:
            self._async_abort_entries_match({CONF_HOST: user_input[CONF_HOST]})

            try:
                await self.hass.async_add_executor_job(get_api, user_input)
            except CannotConnect:
                errors["base"] = "cannot_connect"
            except LoginError:
                errors[CONF_USERNAME] = "invalid_auth"
                errors[CONF_PASSWORD] = "invalid_auth"

            if not errors:
                return self.async_create_entry(
                    title=f"{DEFAULT_NAME} ({user_input[CONF_HOST]})", data=user_input
                )
        return self.async_show_form(
            step_id="user",
            data_schema=vol.Schema(
                {
                    vol.Required(CONF_HOST): str,
                    vol.Required(CONF_USERNAME): str,
                    vol.Required(CONF_PASSWORD): str,
                    vol.Optional(CONF_PORT, default=DEFAULT_API_PORT): int,
                    vol.Optional(CONF_VERIFY_SSL, default=False): bool,
                }
            ),
            errors=errors,
        )

    async def async_step_reauth(
        self, entry_data: Mapping[str, Any]
    ) -> ConfigFlowResult:
        """Perform reauth upon an API authentication error."""
        return await self.async_step_reauth_confirm()

    async def async_step_reauth_confirm(
        self, user_input: dict[str, str] | None = None
    ) -> ConfigFlowResult:
        """Confirm reauth dialog."""
        errors = {}

        reauth_entry = self._get_reauth_entry()
        if user_input is not None:
            user_input = {**reauth_entry.data, **user_input}
            try:
                await self.hass.async_add_executor_job(get_api, user_input)
            except CannotConnect:
                errors["base"] = "cannot_connect"
            except LoginError:
                errors[CONF_PASSWORD] = "invalid_auth"

            if not errors:
                return self.async_update_reload_and_abort(reauth_entry, data=user_input)

        return self.async_show_form(
            description_placeholders={CONF_USERNAME: reauth_entry.data[CONF_USERNAME]},
            step_id="reauth_confirm",
            data_schema=vol.Schema(
                {
                    vol.Required(CONF_PASSWORD): str,
                }
            ),
            errors=errors,
        )


class MikrotikOptionsFlowHandler(OptionsFlow):
    """Handle Mikrotik options."""

    async def async_step_init(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Manage the Mikrotik options."""
        return await self.async_step_device_tracker()

    async def async_step_device_tracker(
        self, user_input: dict[str, Any] | None = None
    ) -> ConfigFlowResult:
        """Manage the device tracker options."""
        if user_input is not None:
            return self.async_create_entry(title="", data=user_input)

        options = {
            vol.Optional(
                CONF_FORCE_DHCP,
                default=self.config_entry.options.get(CONF_FORCE_DHCP, False),
            ): bool,
            vol.Optional(
                CONF_ARP_PING,
                default=self.config_entry.options.get(CONF_ARP_PING, False),
            ): bool,
            vol.Optional(
                CONF_DETECTION_TIME,
                default=self.config_entry.options.get(
                    CONF_DETECTION_TIME, DEFAULT_DETECTION_TIME
                ),
            ): int,
        }

        return self.async_show_form(
            step_id="device_tracker", data_schema=vol.Schema(options)
        )