"""
Support for the Hive devices.

For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/switch.hive/
"""
from homeassistant.components.switch import SwitchDevice
from homeassistant.components.hive import DATA_HIVE

DEPENDENCIES = ['hive']


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Set up Hive switches."""
    if discovery_info is None:
        return
    session = hass.data.get(DATA_HIVE)

    add_devices([HiveDevicePlug(session, discovery_info)])


class HiveDevicePlug(SwitchDevice):
    """Hive Active Plug."""

    def __init__(self, hivesession, hivedevice):
        """Initialize the Switch device."""
        self.node_id = hivedevice["Hive_NodeID"]
        self.node_name = hivedevice["Hive_NodeName"]
        self.device_type = hivedevice["HA_DeviceType"]
        self.session = hivesession
        self.data_updatesource = '{}.{}'.format(self.device_type,
                                                self.node_id)
        self.session.entities.append(self)

    def handle_update(self, updatesource):
        """Handle the new update request."""
        if '{}.{}'.format(self.device_type, self.node_id) not in updatesource:
            self.schedule_update_ha_state()

    @property
    def name(self):
        """Return the name of this Switch device if any."""
        return self.node_name

    @property
    def current_power_w(self):
        """Return the current power usage in W."""
        return self.session.switch.get_power_usage(self.node_id)

    @property
    def is_on(self):
        """Return true if switch is on."""
        return self.session.switch.get_state(self.node_id)

    def turn_on(self, **kwargs):
        """Turn the switch on."""
        self.session.switch.turn_on(self.node_id)
        for entity in self.session.entities:
            entity.handle_update(self.data_updatesource)

    def turn_off(self, **kwargs):
        """Turn the device off."""
        self.session.switch.turn_off(self.node_id)
        for entity in self.session.entities:
            entity.handle_update(self.data_updatesource)

    def update(self):
        """Update all Node data from Hive."""
        self.session.core.update_data(self.node_id)