"""Component to embed TP-Link smart home devices."""
import logging

import voluptuous as vol

from homeassistant.const import CONF_HOST
from homeassistant import config_entries
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.typing import ConfigType, HomeAssistantType

from .common import (
    async_discover_devices,
    get_static_devices,
    ATTR_CONFIG,
    CONF_DIMMER,
    CONF_DISCOVERY,
    CONF_LIGHT,
    CONF_SWITCH,
    SmartDevices
)

_LOGGER = logging.getLogger(__name__)

DOMAIN = 'tplink'

TPLINK_HOST_SCHEMA = vol.Schema({
    vol.Required(CONF_HOST): cv.string
})


CONFIG_SCHEMA = vol.Schema({
    DOMAIN: vol.Schema({
        vol.Optional(CONF_LIGHT, default=[]): vol.All(
            cv.ensure_list,
            [TPLINK_HOST_SCHEMA]
        ),
        vol.Optional(CONF_SWITCH, default=[]): vol.All(
            cv.ensure_list,
            [TPLINK_HOST_SCHEMA]
        ),
        vol.Optional(CONF_DIMMER, default=[]): vol.All(
            cv.ensure_list,
            [TPLINK_HOST_SCHEMA]
        ),
        vol.Optional(CONF_DISCOVERY, default=True): cv.boolean,
    }),
}, extra=vol.ALLOW_EXTRA)


async def async_setup(hass, config):
    """Set up the TP-Link component."""
    conf = config.get(DOMAIN)

    hass.data[DOMAIN] = {}
    hass.data[DOMAIN][ATTR_CONFIG] = conf

    if conf is not None:
        hass.async_create_task(hass.config_entries.flow.async_init(
            DOMAIN, context={'source': config_entries.SOURCE_IMPORT}))

    return True


async def async_setup_entry(hass: HomeAssistantType, config_entry: ConfigType):
    """Set up TPLink from a config entry."""
    config_data = hass.data[DOMAIN].get(ATTR_CONFIG)

    # These will contain the initialized devices
    lights = hass.data[DOMAIN][CONF_LIGHT] = []
    switches = hass.data[DOMAIN][CONF_SWITCH] = []

    # Add static devices
    static_devices = SmartDevices()
    if config_data is not None:
        static_devices = get_static_devices(
            config_data,
        )

        lights.extend(static_devices.lights)
        switches.extend(static_devices.switches)

    # Add discovered devices
    if config_data is None or config_data[CONF_DISCOVERY]:
        discovered_devices = await async_discover_devices(hass, static_devices)

        lights.extend(discovered_devices.lights)
        switches.extend(discovered_devices.switches)

    forward_setup = hass.config_entries.async_forward_entry_setup
    if lights:
        _LOGGER.debug(
            "Got %s lights: %s",
            len(lights),
            ", ".join([d.host for d in lights])
        )
        hass.async_create_task(forward_setup(config_entry, 'light'))
    if switches:
        _LOGGER.debug(
            "Got %s switches: %s",
            len(switches),
            ", ".join([d.host for d in switches])
        )
        hass.async_create_task(forward_setup(config_entry, 'switch'))

    return True


async def async_unload_entry(hass, entry):
    """Unload a config entry."""
    forward_unload = hass.config_entries.async_forward_entry_unload
    remove_lights = remove_switches = False
    if hass.data[DOMAIN][CONF_LIGHT]:
        remove_lights = await forward_unload(entry, 'light')
    if hass.data[DOMAIN][CONF_SWITCH]:
        remove_switches = await forward_unload(entry, 'switch')

    if remove_lights or remove_switches:
        hass.data[DOMAIN].clear()
        return True

    # We were not able to unload the platforms, either because there
    # were none or one of the forward_unloads failed.
    return False