core/homeassistant/components/switch/__init__.py

138 lines
4.2 KiB
Python

"""
Component to interface with various switches that can be controlled remotely.
For more details about this component, please refer to the documentation
at https://home-assistant.io/components/switch/
"""
from datetime import timedelta
import logging
import os
import voluptuous as vol
from homeassistant.config import load_yaml_config_file
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.entity import ToggleEntity
from homeassistant.helpers.config_validation import PLATFORM_SCHEMA # noqa
import homeassistant.helpers.config_validation as cv
from homeassistant.const import (
STATE_ON, SERVICE_TURN_ON, SERVICE_TURN_OFF, SERVICE_TOGGLE,
ATTR_ENTITY_ID)
from homeassistant.components import group
DOMAIN = 'switch'
SCAN_INTERVAL = 30
GROUP_NAME_ALL_SWITCHES = 'all switches'
ENTITY_ID_ALL_SWITCHES = group.ENTITY_ID_FORMAT.format('all_switches')
ENTITY_ID_FORMAT = DOMAIN + '.{}'
ATTR_TODAY_MWH = "today_mwh"
ATTR_CURRENT_POWER_MWH = "current_power_mwh"
MIN_TIME_BETWEEN_SCANS = timedelta(seconds=10)
PROP_TO_ATTR = {
'current_power_mwh': ATTR_CURRENT_POWER_MWH,
'today_power_mw': ATTR_TODAY_MWH,
}
SWITCH_SERVICE_SCHEMA = vol.Schema({
vol.Optional(ATTR_ENTITY_ID): cv.entity_ids,
})
_LOGGER = logging.getLogger(__name__)
def is_on(hass, entity_id=None):
"""Return if the switch is on based on the statemachine."""
entity_id = entity_id or ENTITY_ID_ALL_SWITCHES
return hass.states.is_state(entity_id, STATE_ON)
def turn_on(hass, entity_id=None):
"""Turn all or specified switch on."""
data = {ATTR_ENTITY_ID: entity_id} if entity_id else None
hass.services.call(DOMAIN, SERVICE_TURN_ON, data)
def turn_off(hass, entity_id=None):
"""Turn all or specified switch off."""
data = {ATTR_ENTITY_ID: entity_id} if entity_id else None
hass.services.call(DOMAIN, SERVICE_TURN_OFF, data)
def toggle(hass, entity_id=None):
"""Toggle all or specified switch."""
data = {ATTR_ENTITY_ID: entity_id} if entity_id else None
hass.services.call(DOMAIN, SERVICE_TOGGLE, data)
def setup(hass, config):
"""Track states and offer events for switches."""
component = EntityComponent(
_LOGGER, DOMAIN, hass, SCAN_INTERVAL, GROUP_NAME_ALL_SWITCHES)
component.setup(config)
def handle_switch_service(service):
"""Handle calls to the switch services."""
target_switches = component.extract_from_service(service)
for switch in target_switches:
if service.service == SERVICE_TURN_ON:
switch.turn_on()
elif service.service == SERVICE_TOGGLE:
switch.toggle()
else:
switch.turn_off()
if switch.should_poll:
switch.update_ha_state(True)
descriptions = load_yaml_config_file(
os.path.join(os.path.dirname(__file__), 'services.yaml'))
hass.services.register(DOMAIN, SERVICE_TURN_OFF, handle_switch_service,
descriptions.get(SERVICE_TURN_OFF),
schema=SWITCH_SERVICE_SCHEMA)
hass.services.register(DOMAIN, SERVICE_TURN_ON, handle_switch_service,
descriptions.get(SERVICE_TURN_ON),
schema=SWITCH_SERVICE_SCHEMA)
hass.services.register(DOMAIN, SERVICE_TOGGLE, handle_switch_service,
descriptions.get(SERVICE_TOGGLE),
schema=SWITCH_SERVICE_SCHEMA)
return True
class SwitchDevice(ToggleEntity):
"""Representation of a switch."""
# pylint: disable=no-self-use, abstract-method
@property
def current_power_mwh(self):
"""Return the current power usage in mWh."""
return None
@property
def today_power_mw(self):
"""Return the today total power usage in mW."""
return None
@property
def is_standby(self):
"""Return true if device is in standby."""
return None
@property
def state_attributes(self):
"""Return the optional state attributes."""
data = {}
for prop, attr in PROP_TO_ATTR.items():
value = getattr(self, prop)
if value:
data[attr] = value
return data