"""
Support for Wink Covers.

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

from homeassistant.components.cover import CoverDevice
from homeassistant.components.wink import WinkDevice, DOMAIN

DEPENDENCIES = ['wink']


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Set up the Wink cover platform."""
    import pywink

    for shade in pywink.get_shades():
        _id = shade.object_id() + shade.name()
        if _id not in hass.data[DOMAIN]['unique_ids']:
            add_devices([WinkCoverDevice(shade, hass)])
    for door in pywink.get_garage_doors():
        _id = door.object_id() + door.name()
        if _id not in hass.data[DOMAIN]['unique_ids']:
            add_devices([WinkCoverDevice(door, hass)])


class WinkCoverDevice(WinkDevice, CoverDevice):
    """Representation of a Wink cover device."""

    def __init__(self, wink, hass):
        """Initialize the cover."""
        super().__init__(wink, hass)

    @asyncio.coroutine
    def async_added_to_hass(self):
        """Callback when entity is added to hass."""
        self.hass.data[DOMAIN]['entities']['cover'].append(self)

    def close_cover(self):
        """Close the shade."""
        self.wink.set_state(0)

    def open_cover(self):
        """Open the shade."""
        self.wink.set_state(1)

    def set_cover_position(self, position, **kwargs):
        """Move the roller shutter to a specific position."""
        self.wink.set_state(float(position)/100)

    @property
    def current_cover_position(self):
        """Return the current position of roller shutter."""
        return int(self.wink.state()*100)

    @property
    def is_closed(self):
        """Return if the cover is closed."""
        state = self.wink.state()
        return bool(state == 0)