"""
Support for Wink sensors.

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

from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components.sensor.wink import WinkDevice
from homeassistant.const import CONF_ACCESS_TOKEN
from homeassistant.helpers.entity import Entity
from homeassistant.loader import get_component

REQUIREMENTS = ['python-wink==0.7.10', 'pubnub==3.8.2']

# These are the available sensors mapped to binary_sensor class
SENSOR_TYPES = {
    "opened": "opening",
    "brightness": "light",
    "vibration": "vibration",
    "loudness": "sound"
}


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Setup the Wink binary sensor platform."""
    import pywink

    if discovery_info is None:
        token = config.get(CONF_ACCESS_TOKEN)

        if token is None:
            logging.getLogger(__name__).error(
                "Missing wink access_token. "
                "Get one at https://winkbearertoken.appspot.com/")
            return

        pywink.set_bearer_token(token)

    for sensor in pywink.get_sensors():
        if sensor.capability() in SENSOR_TYPES:
            add_devices([WinkBinarySensorDevice(sensor)])

    for key in pywink.get_keys():
        add_devices([WinkBinarySensorDevice(key)])


class WinkBinarySensorDevice(WinkDevice, BinarySensorDevice, Entity):
    """Representation of a Wink binary sensor."""

    def __init__(self, wink):
        """Initialize the Wink binary sensor."""
        super().__init__(wink)
        wink = get_component('wink')
        self._unit_of_measurement = self.wink.UNIT
        self.capability = self.wink.capability()

    def _pubnub_update(self, message, channel):
        if 'data' in message:
            json_data = json.dumps(message.get('data'))
        else:
            json_data = message
        self.wink.pubnub_update(json.loads(json_data))
        self.update_ha_state()

    @property
    def is_on(self):
        """Return true if the binary sensor is on."""
        if self.capability == "loudness":
            return self.wink.loudness_boolean()
        elif self.capability == "vibration":
            return self.wink.vibration_boolean()
        elif self.capability == "brightness":
            return self.wink.brightness_boolean()
        else:
            return self.wink.state()

    @property
    def sensor_class(self):
        """Return the class of this sensor, from SENSOR_CLASSES."""
        return SENSOR_TYPES.get(self.capability)
