94 lines
2.3 KiB
Python
94 lines
2.3 KiB
Python
"""Sensor for checking the status of London Underground tube lines."""
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from datetime import timedelta
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import logging
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import voluptuous as vol
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from homeassistant.components.sensor import PLATFORM_SCHEMA
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from homeassistant.const import ATTR_ATTRIBUTION
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import homeassistant.helpers.config_validation as cv
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from homeassistant.helpers.entity import Entity
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_LOGGER = logging.getLogger(__name__)
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ATTRIBUTION = "Powered by TfL Open Data"
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CONF_LINE = 'line'
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ICON = 'mdi:subway'
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SCAN_INTERVAL = timedelta(seconds=30)
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TUBE_LINES = [
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'Bakerloo',
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'Central',
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'Circle',
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'District',
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'DLR',
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'Hammersmith & City',
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'Jubilee',
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'London Overground',
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'Metropolitan',
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'Northern',
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'Piccadilly',
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'TfL Rail',
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'Victoria',
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'Waterloo & City',
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]
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_LINE):
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vol.All(cv.ensure_list, [vol.In(list(TUBE_LINES))]),
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})
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def setup_platform(hass, config, add_entities, discovery_info=None):
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"""Set up the Tube sensor."""
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from london_tube_status import TubeData
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data = TubeData()
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data.update()
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sensors = []
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for line in config.get(CONF_LINE):
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sensors.append(LondonTubeSensor(line, data))
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add_entities(sensors, True)
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class LondonTubeSensor(Entity):
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"""Sensor that reads the status of a line from Tube Data."""
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def __init__(self, name, data):
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"""Initialize the London Underground sensor."""
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self._data = data
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self._description = None
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self._name = name
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self._state = None
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self.attrs = {ATTR_ATTRIBUTION: ATTRIBUTION}
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@property
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def name(self):
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"""Return the name of the sensor."""
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return self._name
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@property
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def state(self):
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"""Return the state of the sensor."""
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return self._state
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@property
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def icon(self):
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"""Icon to use in the frontend, if any."""
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return ICON
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@property
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def device_state_attributes(self):
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"""Return other details about the sensor state."""
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self.attrs['Description'] = self._description
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return self.attrs
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def update(self):
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"""Update the sensor."""
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self._data.update()
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self._state = self._data.data[self.name]['State']
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self._description = self._data.data[self.name]['Description']
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