"""Support for UV data from openuv.io."""
import logging

import voluptuous as vol

from homeassistant.config_entries import SOURCE_IMPORT
from homeassistant.const import (
    ATTR_ATTRIBUTION,
    CONF_API_KEY,
    CONF_BINARY_SENSORS,
    CONF_ELEVATION,
    CONF_LATITUDE,
    CONF_LONGITUDE,
    CONF_MONITORED_CONDITIONS,
    CONF_SENSORS,
)
from homeassistant.exceptions import ConfigEntryNotReady
from homeassistant.helpers import aiohttp_client, config_validation as cv
from homeassistant.helpers.dispatcher import async_dispatcher_send
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.service import verify_domain_control

from .config_flow import configured_instances
from .const import DOMAIN

_LOGGER = logging.getLogger(__name__)

DATA_OPENUV_CLIENT = "data_client"
DATA_OPENUV_LISTENER = "data_listener"
DATA_PROTECTION_WINDOW = "protection_window"
DATA_UV = "uv"

DEFAULT_ATTRIBUTION = "Data provided by OpenUV"

NOTIFICATION_ID = "openuv_notification"
NOTIFICATION_TITLE = "OpenUV Component Setup"

TOPIC_UPDATE = "{0}_data_update".format(DOMAIN)

TYPE_CURRENT_OZONE_LEVEL = "current_ozone_level"
TYPE_CURRENT_UV_INDEX = "current_uv_index"
TYPE_CURRENT_UV_LEVEL = "current_uv_level"
TYPE_MAX_UV_INDEX = "max_uv_index"
TYPE_PROTECTION_WINDOW = "uv_protection_window"
TYPE_SAFE_EXPOSURE_TIME_1 = "safe_exposure_time_type_1"
TYPE_SAFE_EXPOSURE_TIME_2 = "safe_exposure_time_type_2"
TYPE_SAFE_EXPOSURE_TIME_3 = "safe_exposure_time_type_3"
TYPE_SAFE_EXPOSURE_TIME_4 = "safe_exposure_time_type_4"
TYPE_SAFE_EXPOSURE_TIME_5 = "safe_exposure_time_type_5"
TYPE_SAFE_EXPOSURE_TIME_6 = "safe_exposure_time_type_6"

BINARY_SENSORS = {TYPE_PROTECTION_WINDOW: ("Protection Window", "mdi:sunglasses")}

BINARY_SENSOR_SCHEMA = vol.Schema(
    {
        vol.Optional(CONF_MONITORED_CONDITIONS, default=list(BINARY_SENSORS)): vol.All(
            cv.ensure_list, [vol.In(BINARY_SENSORS)]
        )
    }
)

SENSORS = {
    TYPE_CURRENT_OZONE_LEVEL: ("Current Ozone Level", "mdi:vector-triangle", "du"),
    TYPE_CURRENT_UV_INDEX: ("Current UV Index", "mdi:weather-sunny", "index"),
    TYPE_CURRENT_UV_LEVEL: ("Current UV Level", "mdi:weather-sunny", None),
    TYPE_MAX_UV_INDEX: ("Max UV Index", "mdi:weather-sunny", "index"),
    TYPE_SAFE_EXPOSURE_TIME_1: (
        "Skin Type 1 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
    TYPE_SAFE_EXPOSURE_TIME_2: (
        "Skin Type 2 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
    TYPE_SAFE_EXPOSURE_TIME_3: (
        "Skin Type 3 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
    TYPE_SAFE_EXPOSURE_TIME_4: (
        "Skin Type 4 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
    TYPE_SAFE_EXPOSURE_TIME_5: (
        "Skin Type 5 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
    TYPE_SAFE_EXPOSURE_TIME_6: (
        "Skin Type 6 Safe Exposure Time",
        "mdi:timer",
        "minutes",
    ),
}

SENSOR_SCHEMA = vol.Schema(
    {
        vol.Optional(CONF_MONITORED_CONDITIONS, default=list(SENSORS)): vol.All(
            cv.ensure_list, [vol.In(SENSORS)]
        )
    }
)

CONFIG_SCHEMA = vol.Schema(
    {
        DOMAIN: vol.Schema(
            {
                vol.Required(CONF_API_KEY): cv.string,
                vol.Optional(CONF_ELEVATION): float,
                vol.Optional(CONF_LATITUDE): cv.latitude,
                vol.Optional(CONF_LONGITUDE): cv.longitude,
                vol.Optional(CONF_BINARY_SENSORS, default={}): BINARY_SENSOR_SCHEMA,
                vol.Optional(CONF_SENSORS, default={}): SENSOR_SCHEMA,
            }
        )
    },
    extra=vol.ALLOW_EXTRA,
)


async def async_setup(hass, config):
    """Set up the OpenUV component."""
    hass.data[DOMAIN] = {}
    hass.data[DOMAIN][DATA_OPENUV_CLIENT] = {}
    hass.data[DOMAIN][DATA_OPENUV_LISTENER] = {}

    if DOMAIN not in config:
        return True

    conf = config[DOMAIN]

    identifier = "{0}, {1}".format(
        conf.get(CONF_LATITUDE, hass.config.latitude),
        conf.get(CONF_LONGITUDE, hass.config.longitude),
    )
    if identifier in configured_instances(hass):
        return True

    data = {
        CONF_API_KEY: conf[CONF_API_KEY],
        CONF_BINARY_SENSORS: conf[CONF_BINARY_SENSORS],
        CONF_SENSORS: conf[CONF_SENSORS],
    }

    if CONF_LATITUDE in conf:
        data[CONF_LATITUDE] = conf[CONF_LATITUDE]
    if CONF_LONGITUDE in conf:
        data[CONF_LONGITUDE] = conf[CONF_LONGITUDE]
    if CONF_ELEVATION in conf:
        data[CONF_ELEVATION] = conf[CONF_ELEVATION]

    hass.async_create_task(
        hass.config_entries.flow.async_init(
            DOMAIN, context={"source": SOURCE_IMPORT}, data=data
        )
    )

    return True


async def async_setup_entry(hass, config_entry):
    """Set up OpenUV as config entry."""
    from pyopenuv import Client
    from pyopenuv.errors import OpenUvError

    _verify_domain_control = verify_domain_control(hass, DOMAIN)

    try:
        websession = aiohttp_client.async_get_clientsession(hass)
        openuv = OpenUV(
            Client(
                config_entry.data[CONF_API_KEY],
                config_entry.data.get(CONF_LATITUDE, hass.config.latitude),
                config_entry.data.get(CONF_LONGITUDE, hass.config.longitude),
                websession,
                altitude=config_entry.data.get(CONF_ELEVATION, hass.config.elevation),
            ),
            config_entry.data.get(CONF_BINARY_SENSORS, {}).get(
                CONF_MONITORED_CONDITIONS, list(BINARY_SENSORS)
            ),
            config_entry.data.get(CONF_SENSORS, {}).get(
                CONF_MONITORED_CONDITIONS, list(SENSORS)
            ),
        )
        await openuv.async_update()
        hass.data[DOMAIN][DATA_OPENUV_CLIENT][config_entry.entry_id] = openuv
    except OpenUvError as err:
        _LOGGER.error("Config entry failed: %s", err)
        raise ConfigEntryNotReady

    for component in ("binary_sensor", "sensor"):
        hass.async_create_task(
            hass.config_entries.async_forward_entry_setup(config_entry, component)
        )

    @_verify_domain_control
    async def update_data(service):
        """Refresh OpenUV data."""
        _LOGGER.debug("Refreshing OpenUV data")

        try:
            await openuv.async_update()
        except OpenUvError as err:
            _LOGGER.error("Error during data update: %s", err)
            return

        async_dispatcher_send(hass, TOPIC_UPDATE)

    hass.services.async_register(DOMAIN, "update_data", update_data)

    return True


async def async_unload_entry(hass, config_entry):
    """Unload an OpenUV config entry."""
    hass.data[DOMAIN][DATA_OPENUV_CLIENT].pop(config_entry.entry_id)

    for component in ("binary_sensor", "sensor"):
        await hass.config_entries.async_forward_entry_unload(config_entry, component)

    return True


class OpenUV:
    """Define a generic OpenUV object."""

    def __init__(self, client, binary_sensor_conditions, sensor_conditions):
        """Initialize."""
        self.binary_sensor_conditions = binary_sensor_conditions
        self.client = client
        self.data = {}
        self.sensor_conditions = sensor_conditions

    async def async_update(self):
        """Update sensor/binary sensor data."""
        if TYPE_PROTECTION_WINDOW in self.binary_sensor_conditions:
            resp = await self.client.uv_protection_window()
            data = resp["result"]

            if data.get("from_time") and data.get("to_time"):
                self.data[DATA_PROTECTION_WINDOW] = data
            else:
                _LOGGER.debug("No valid protection window data for this location")
                self.data[DATA_PROTECTION_WINDOW] = {}

        if any(c in self.sensor_conditions for c in SENSORS):
            data = await self.client.uv_index()
            self.data[DATA_UV] = data


class OpenUvEntity(Entity):
    """Define a generic OpenUV entity."""

    def __init__(self, openuv):
        """Initialize."""
        self._attrs = {ATTR_ATTRIBUTION: DEFAULT_ATTRIBUTION}
        self._name = None
        self.openuv = openuv

    @property
    def device_state_attributes(self):
        """Return the state attributes."""
        return self._attrs

    @property
    def name(self):
        """Return the name of the entity."""
        return self._name