"""
Support for Hydrawise cloud.

For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/switch.hydrawise/
"""
import logging

import voluptuous as vol

import homeassistant.helpers.config_validation as cv
from homeassistant.components.hydrawise import (
    ALLOWED_WATERING_TIME, CONF_WATERING_TIME,
    DATA_HYDRAWISE, DEFAULT_WATERING_TIME, HydrawiseEntity, SWITCHES,
    DEVICE_MAP, DEVICE_MAP_INDEX)
from homeassistant.components.switch import PLATFORM_SCHEMA, SwitchDevice
from homeassistant.const import CONF_MONITORED_CONDITIONS

DEPENDENCIES = ['hydrawise']

_LOGGER = logging.getLogger(__name__)

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
    vol.Optional(CONF_MONITORED_CONDITIONS, default=SWITCHES):
        vol.All(cv.ensure_list, [vol.In(SWITCHES)]),
    vol.Optional(CONF_WATERING_TIME, default=DEFAULT_WATERING_TIME):
        vol.All(vol.In(ALLOWED_WATERING_TIME)),
})


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Set up a sensor for a Hydrawise device."""
    hydrawise = hass.data[DATA_HYDRAWISE].data

    default_watering_timer = config.get(CONF_WATERING_TIME)

    sensors = []
    for sensor_type in config.get(CONF_MONITORED_CONDITIONS):
        # create a switch for each zone
        for zone in hydrawise.relays:
            sensors.append(
                HydrawiseSwitch(default_watering_timer,
                                zone,
                                sensor_type))

    add_devices(sensors, True)


class HydrawiseSwitch(HydrawiseEntity, SwitchDevice):
    """A switch implementation for Hydrawise device."""

    def __init__(self, default_watering_timer, *args):
        """Initialize a switch for Hydrawise device."""
        super().__init__(*args)
        self._default_watering_timer = default_watering_timer

    @property
    def is_on(self):
        """Return true if device is on."""
        return self._state

    def turn_on(self, **kwargs):
        """Turn the device on."""
        if self._sensor_type == 'manual_watering':
            self.hass.data[DATA_HYDRAWISE].data.run_zone(
                self._default_watering_timer, (self.data['relay']-1))
        elif self._sensor_type == 'auto_watering':
            self.hass.data[DATA_HYDRAWISE].data.suspend_zone(
                0, (self.data['relay']-1))

    def turn_off(self, **kwargs):
        """Turn the device off."""
        if self._sensor_type == 'manual_watering':
            self.hass.data[DATA_HYDRAWISE].data.run_zone(
                0, (self.data['relay']-1))
        elif self._sensor_type == 'auto_watering':
            self.hass.data[DATA_HYDRAWISE].data.suspend_zone(
                365, (self.data['relay']-1))

    def update(self):
        """Update device state."""
        mydata = self.hass.data[DATA_HYDRAWISE].data
        _LOGGER.debug("Updating Hydrawise switch: %s", self._name)
        if self._sensor_type == 'manual_watering':
            if not mydata.running:
                self._state = False
            else:
                self._state = int(
                    mydata.running[0]['relay']) == self.data['relay']
        elif self._sensor_type == 'auto_watering':
            for relay in mydata.relays:
                if relay['relay'] == self.data['relay']:
                    if relay.get('suspended') is not None:
                        self._state = False
                    else:
                        self._state = True
                    break

    @property
    def icon(self):
        """Return the icon to use in the frontend, if any."""
        return DEVICE_MAP[self._sensor_type][
            DEVICE_MAP_INDEX.index('ICON_INDEX')]