"""Support for Hydrawise cloud."""
from datetime import timedelta
import logging

from hydrawiser.core import Hydrawiser
from requests.exceptions import ConnectTimeout, HTTPError
import voluptuous as vol

from homeassistant.const import ATTR_ATTRIBUTION, CONF_ACCESS_TOKEN, CONF_SCAN_INTERVAL
from homeassistant.core import callback
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.dispatcher import async_dispatcher_connect, dispatcher_send
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.event import track_time_interval

_LOGGER = logging.getLogger(__name__)

ALLOWED_WATERING_TIME = [5, 10, 15, 30, 45, 60]

ATTRIBUTION = "Data provided by hydrawise.com"

CONF_WATERING_TIME = "watering_minutes"

NOTIFICATION_ID = "hydrawise_notification"
NOTIFICATION_TITLE = "Hydrawise Setup"

DATA_HYDRAWISE = "hydrawise"
DOMAIN = "hydrawise"
DEFAULT_WATERING_TIME = 15

DEVICE_MAP_INDEX = [
    "KEY_INDEX",
    "ICON_INDEX",
    "DEVICE_CLASS_INDEX",
    "UNIT_OF_MEASURE_INDEX",
]
DEVICE_MAP = {
    "auto_watering": ["Automatic Watering", "mdi:autorenew", "", ""],
    "is_watering": ["Watering", "", "moisture", ""],
    "manual_watering": ["Manual Watering", "mdi:water-pump", "", ""],
    "next_cycle": ["Next Cycle", "mdi:calendar-clock", "", ""],
    "status": ["Status", "", "connectivity", ""],
    "watering_time": ["Watering Time", "mdi:water-pump", "", "min"],
    "rain_sensor": ["Rain Sensor", "", "moisture", ""],
}

BINARY_SENSORS = ["is_watering", "status", "rain_sensor"]

SENSORS = ["next_cycle", "watering_time"]

SWITCHES = ["auto_watering", "manual_watering"]

SCAN_INTERVAL = timedelta(seconds=30)

SIGNAL_UPDATE_HYDRAWISE = "hydrawise_update"

CONFIG_SCHEMA = vol.Schema(
    {
        DOMAIN: vol.Schema(
            {
                vol.Required(CONF_ACCESS_TOKEN): cv.string,
                vol.Optional(CONF_SCAN_INTERVAL, default=SCAN_INTERVAL): cv.time_period,
            }
        )
    },
    extra=vol.ALLOW_EXTRA,
)


def setup(hass, config):
    """Set up the Hunter Hydrawise component."""
    conf = config[DOMAIN]
    access_token = conf[CONF_ACCESS_TOKEN]
    scan_interval = conf.get(CONF_SCAN_INTERVAL)

    try:
        hydrawise = Hydrawiser(user_token=access_token)
        hass.data[DATA_HYDRAWISE] = HydrawiseHub(hydrawise)
    except (ConnectTimeout, HTTPError) as ex:
        _LOGGER.error("Unable to connect to Hydrawise cloud service: %s", str(ex))
        hass.components.persistent_notification.create(
            "Error: {}<br />"
            "You will need to restart hass after fixing."
            "".format(ex),
            title=NOTIFICATION_TITLE,
            notification_id=NOTIFICATION_ID,
        )
        return False

    def hub_refresh(event_time):
        """Call Hydrawise hub to refresh information."""
        _LOGGER.debug("Updating Hydrawise Hub component")
        hass.data[DATA_HYDRAWISE].data.update_controller_info()
        dispatcher_send(hass, SIGNAL_UPDATE_HYDRAWISE)

    # Call the Hydrawise API to refresh updates
    track_time_interval(hass, hub_refresh, scan_interval)

    return True


class HydrawiseHub:
    """Representation of a base Hydrawise device."""

    def __init__(self, data):
        """Initialize the entity."""
        self.data = data


class HydrawiseEntity(Entity):
    """Entity class for Hydrawise devices."""

    def __init__(self, data, sensor_type):
        """Initialize the Hydrawise entity."""
        self.data = data
        self._sensor_type = sensor_type
        self._name = "{0} {1}".format(
            self.data["name"],
            DEVICE_MAP[self._sensor_type][DEVICE_MAP_INDEX.index("KEY_INDEX")],
        )
        self._state = None

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

    async def async_added_to_hass(self):
        """Register callbacks."""
        async_dispatcher_connect(
            self.hass, SIGNAL_UPDATE_HYDRAWISE, self._update_callback
        )

    @callback
    def _update_callback(self):
        """Call update method."""
        self.async_schedule_update_ha_state(True)

    @property
    def unit_of_measurement(self):
        """Return the units of measurement."""
        return DEVICE_MAP[self._sensor_type][
            DEVICE_MAP_INDEX.index("UNIT_OF_MEASURE_INDEX")
        ]

    @property
    def device_state_attributes(self):
        """Return the state attributes."""
        return {ATTR_ATTRIBUTION: ATTRIBUTION, "identifier": self.data.get("relay")}
