"""Support for EnOcean binary sensors."""
import logging

import voluptuous as vol

from homeassistant.components import enocean
from homeassistant.components.binary_sensor import (
    DEVICE_CLASSES_SCHEMA, PLATFORM_SCHEMA, BinarySensorDevice)
from homeassistant.const import CONF_DEVICE_CLASS, CONF_ID, CONF_NAME
import homeassistant.helpers.config_validation as cv

_LOGGER = logging.getLogger(__name__)

DEFAULT_NAME = 'EnOcean binary sensor'
DEPENDENCIES = ['enocean']
EVENT_BUTTON_PRESSED = 'button_pressed'

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
    vol.Required(CONF_ID): vol.All(cv.ensure_list, [vol.Coerce(int)]),
    vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
    vol.Optional(CONF_DEVICE_CLASS): DEVICE_CLASSES_SCHEMA,
})


def setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up the Binary Sensor platform for EnOcean."""
    dev_id = config.get(CONF_ID)
    dev_name = config.get(CONF_NAME)
    device_class = config.get(CONF_DEVICE_CLASS)

    add_entities([EnOceanBinarySensor(dev_id, dev_name, device_class)])


class EnOceanBinarySensor(enocean.EnOceanDevice, BinarySensorDevice):
    """Representation of EnOcean binary sensors such as wall switches.

    Supported EEPs (EnOcean Equipment Profiles):
    - F6-02-01 (Light and Blind Control - Application Style 2)
    - F6-02-02 (Light and Blind Control - Application Style 1)
    """

    def __init__(self, dev_id, dev_name, device_class):
        """Initialize the EnOcean binary sensor."""
        super().__init__(dev_id, dev_name)
        self._device_class = device_class
        self.which = -1
        self.onoff = -1

    @property
    def name(self):
        """Return the default name for the binary sensor."""
        return self.dev_name

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

    def value_changed(self, packet):
        """Fire an event with the data that have changed.

        This method is called when there is an incoming packet associated
        with this platform.

        Example packet data:
        - 2nd button pressed
            ['0xf6', '0x10', '0x00', '0x2d', '0xcf', '0x45', '0x30']
        - button released
            ['0xf6', '0x00', '0x00', '0x2d', '0xcf', '0x45', '0x20']
        """
        # Energy Bow
        pushed = None

        if packet.data[6] == 0x30:
            pushed = 1
        elif packet.data[6] == 0x20:
            pushed = 0

        self.schedule_update_ha_state()

        action = packet.data[1]
        if action == 0x70:
            self.which = 0
            self.onoff = 0
        elif action == 0x50:
            self.which = 0
            self.onoff = 1
        elif action == 0x30:
            self.which = 1
            self.onoff = 0
        elif action == 0x10:
            self.which = 1
            self.onoff = 1
        elif action == 0x37:
            self.which = 10
            self.onoff = 0
        elif action == 0x15:
            self.which = 10
            self.onoff = 1
        self.hass.bus.fire(EVENT_BUTTON_PRESSED,
                           {'id': self.dev_id,
                            'pushed': pushed,
                            'which': self.which,
                            'onoff': self.onoff})