"""
Support for MAX! Window Shutter via MAX! Cube.

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

from homeassistant.components.binary_sensor import BinarySensorDevice
from homeassistant.components.maxcube import MAXCUBE_HANDLE
from homeassistant.const import STATE_UNKNOWN

_LOGGER = logging.getLogger(__name__)


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Iterate through all MAX! Devices and add window shutters."""
    cube = hass.data[MAXCUBE_HANDLE].cube
    devices = []

    for device in cube.devices:
        name = "{} {}".format(
            cube.room_by_id(device.room_id).name, device.name)

        # Only add Window Shutters
        if cube.is_windowshutter(device):
            devices.append(MaxCubeShutter(hass, name, device.rf_address))

    if devices:
        add_devices(devices)


class MaxCubeShutter(BinarySensorDevice):
    """Representation of a MAX! Cube Binary Sensor device."""

    def __init__(self, hass, name, rf_address):
        """Initialize MAX! Cube BinarySensorDevice."""
        self._name = name
        self._sensor_type = 'opening'
        self._rf_address = rf_address
        self._cubehandle = hass.data[MAXCUBE_HANDLE]
        self._state = STATE_UNKNOWN

    @property
    def should_poll(self):
        """Return the polling state."""
        return True

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

    @property
    def device_class(self):
        """Return the class of this sensor."""
        return self._sensor_type

    @property
    def is_on(self):
        """Return true if the binary sensor is on/open."""
        return self._state

    def update(self):
        """Get latest data from MAX! Cube."""
        self._cubehandle.update()
        device = self._cubehandle.cube.device_by_rf(self._rf_address)
        self._state = device.is_open
