tuya.py

"""
Simple platform to control **SOME** Tuya switch devices.

For more details about this platform, please refer to the documentation at
https://home-assistant.io/components/switch.tuya/
"""
import voluptuous as vol
from homeassistant.components.switch import SwitchDevice, PLATFORM_SCHEMA
from homeassistant.const import (CONF_NAME, CONF_HOST, CONF_ID)
import homeassistant.helpers.config_validation as cv

REQUIREMENTS = ['pytuya==2.0']

CONF_DEVICE_ID = 'device_id'
CONF_LOCAL_KEY = 'local_key'

DEFAULT_ID = 1

PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
    vol.Required(CONF_NAME): cv.string,
    vol.Required(CONF_HOST): cv.string,
    vol.Required(CONF_DEVICE_ID): cv.string,
    vol.Required(CONF_LOCAL_KEY): cv.string,
    vol.Optional(CONF_ID, default=DEFAULT_ID): cv.string,
})


def setup_platform(hass, config, add_devices, discovery_info=None):
    """Set up of the Tuya switch."""
    import pytuya

    add_devices([TuyaDevice(
        pytuya.OutletDevice(
            config.get(CONF_DEVICE_ID),
            config.get(CONF_HOST),
            config.get(CONF_LOCAL_KEY),
        ),
        config.get(CONF_NAME),
        config.get(CONF_ID)
    )])


class TuyaDevice(SwitchDevice):
    """Representation of a Tuya switch."""

    def __init__(self, device, name, switchid):
        """Initialize the Tuya switch."""
        self._device = device
        self._name = name
        self._state = False
        self._switchid = switchid

    @property
    def name(self):
        """Get name of Tuya switch."""
        return self._name

    @property
    def is_on(self):
        """Check if Tuya switch is on."""
        return self._state

    def turn_on(self, **kwargs):
        """Turn Tuya switch on."""
        self._device.set_status(True, self._switchid)

    def turn_off(self, **kwargs):
        """Turn Tuya switch off."""
        self._device.set_status(False, self._switchid)

    def update(self):
        """Get state of Tuya switch."""
        success = False
        for i in range(3):
            if success is False:
                try:
                    status = self._device.status()
                    self._state = status['dps'][self._switchid]
                    success = True
                except ConnectionError:
                    if i+1 == 3:
                        success = False
                        raise ConnectionError("Failed to update status.")