"""Support for Neato botvac connected vacuum cleaners."""
import asyncio
import logging
from datetime import timedelta

from pybotvac.exceptions import NeatoException, NeatoLoginException, NeatoRobotException
import voluptuous as vol

from homeassistant.config_entries import SOURCE_IMPORT
from homeassistant.const import CONF_PASSWORD, CONF_USERNAME
from homeassistant.helpers import config_validation as cv
from homeassistant.util import Throttle

from .config_flow import NeatoConfigFlow
from .const import (
    CONF_VENDOR,
    NEATO_CONFIG,
    NEATO_DOMAIN,
    NEATO_LOGIN,
    NEATO_ROBOTS,
    NEATO_PERSISTENT_MAPS,
    NEATO_MAP_DATA,
    SCAN_INTERVAL_MINUTES,
    VALID_VENDORS,
)

_LOGGER = logging.getLogger(__name__)


CONFIG_SCHEMA = vol.Schema(
    {
        NEATO_DOMAIN: vol.Schema(
            {
                vol.Required(CONF_USERNAME): cv.string,
                vol.Required(CONF_PASSWORD): cv.string,
                vol.Optional(CONF_VENDOR, default="neato"): vol.In(VALID_VENDORS),
            }
        )
    },
    extra=vol.ALLOW_EXTRA,
)


async def async_setup(hass, config):
    """Set up the Neato component."""

    if NEATO_DOMAIN not in config:
        # There is an entry and nothing in configuration.yaml
        return True

    entries = hass.config_entries.async_entries(NEATO_DOMAIN)
    hass.data[NEATO_CONFIG] = config[NEATO_DOMAIN]

    if entries:
        # There is an entry and something in the configuration.yaml
        entry = entries[0]
        conf = config[NEATO_DOMAIN]
        if (
            entry.data[CONF_USERNAME] == conf[CONF_USERNAME]
            and entry.data[CONF_PASSWORD] == conf[CONF_PASSWORD]
            and entry.data[CONF_VENDOR] == conf[CONF_VENDOR]
        ):
            # The entry is not outdated
            return True

        # The entry is outdated
        error = await hass.async_add_executor_job(
            NeatoConfigFlow.try_login,
            conf[CONF_USERNAME],
            conf[CONF_PASSWORD],
            conf[CONF_VENDOR],
        )
        if error is not None:
            _LOGGER.error(error)
            return False

        # Update the entry
        hass.config_entries.async_update_entry(entry, data=config[NEATO_DOMAIN])
    else:
        # Create the new entry
        hass.async_create_task(
            hass.config_entries.flow.async_init(
                NEATO_DOMAIN,
                context={"source": SOURCE_IMPORT},
                data=config[NEATO_DOMAIN],
            )
        )

    return True


async def async_setup_entry(hass, entry):
    """Set up config entry."""
    from pybotvac import Account, Neato, Vorwerk

    if entry.data[CONF_VENDOR] == "neato":
        hass.data[NEATO_LOGIN] = NeatoHub(hass, entry.data, Account, Neato)
    elif entry.data[CONF_VENDOR] == "vorwerk":
        hass.data[NEATO_LOGIN] = NeatoHub(hass, entry.data, Account, Vorwerk)

    hub = hass.data[NEATO_LOGIN]
    await hass.async_add_executor_job(hub.login)
    if not hub.logged_in:
        _LOGGER.debug("Failed to login to Neato API")
        return False

    try:
        await hass.async_add_executor_job(hub.update_robots)
    except NeatoRobotException:
        _LOGGER.debug("Failed to connect to Neato API")
        return False

    for component in ("camera", "vacuum", "switch", "sensor"):
        hass.async_create_task(
            hass.config_entries.async_forward_entry_setup(entry, component)
        )

    return True


async def async_unload_entry(hass, entry):
    """Unload config entry."""
    hass.data.pop(NEATO_LOGIN)
    await asyncio.gather(
        hass.config_entries.async_forward_entry_unload(entry, "camera"),
        hass.config_entries.async_forward_entry_unload(entry, "vacuum"),
        hass.config_entries.async_forward_entry_unload(entry, "switch"),
        hass.config_entries.async_forward_entry_unload(entry, "sensor"),
    )
    return True


class NeatoHub:
    """A My Neato hub wrapper class."""

    def __init__(self, hass, domain_config, neato, vendor):
        """Initialize the Neato hub."""
        self.config = domain_config
        self._neato = neato
        self._hass = hass
        self._vendor = vendor

        self.my_neato = None
        self.logged_in = False

    def login(self):
        """Login to My Neato."""
        _LOGGER.debug("Trying to connect to Neato API")
        try:
            self.my_neato = self._neato(
                self.config[CONF_USERNAME], self.config[CONF_PASSWORD], self._vendor
            )
        except NeatoException as ex:
            if isinstance(ex, NeatoLoginException):
                _LOGGER.error("Invalid credentials")
            else:
                _LOGGER.error("Unable to connect to Neato API")
            self.logged_in = False
            return

        self.logged_in = True
        _LOGGER.debug("Successfully connected to Neato API")

    @Throttle(timedelta(minutes=SCAN_INTERVAL_MINUTES))
    def update_robots(self):
        """Update the robot states."""
        _LOGGER.debug("Running HUB.update_robots %s", self._hass.data.get(NEATO_ROBOTS))
        self._hass.data[NEATO_ROBOTS] = self.my_neato.robots
        self._hass.data[NEATO_PERSISTENT_MAPS] = self.my_neato.persistent_maps
        self._hass.data[NEATO_MAP_DATA] = self.my_neato.maps

    def download_map(self, url):
        """Download a new map image."""
        map_image_data = self.my_neato.get_map_image(url)
        return map_image_data