280 lines
10 KiB
Python
280 lines
10 KiB
Python
"""
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Support for GTFS (Google/General Transport Format Schema).
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For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/sensor.gtfs/
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"""
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import os
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import logging
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import datetime
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import threading
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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 CONF_NAME
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from homeassistant.helpers.entity import Entity
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import homeassistant.helpers.config_validation as cv
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REQUIREMENTS = ["https://github.com/robbiet480/pygtfs/archive/"
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"00546724e4bbcb3053110d844ca44e2246267dd8.zip#"
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"pygtfs==0.1.3"]
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_LOGGER = logging.getLogger(__name__)
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CONF_DATA = 'data'
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CONF_DESTINATION = 'destination'
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CONF_ORIGIN = 'origin'
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DEFAULT_NAME = 'GTFS Sensor'
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DEFAULT_PATH = 'gtfs'
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ICON = 'mdi:train'
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TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
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PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend({
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vol.Required(CONF_ORIGIN): cv.string,
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vol.Required(CONF_DESTINATION): cv.string,
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vol.Required(CONF_DATA): cv.string,
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vol.Optional(CONF_NAME): cv.string,
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})
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def get_next_departure(sched, start_station_id, end_station_id):
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"""Get the next departure for the given schedule."""
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origin_station = sched.stops_by_id(start_station_id)[0]
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destination_station = sched.stops_by_id(end_station_id)[0]
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now = datetime.datetime.now()
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day_name = now.strftime('%A').lower()
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now_str = now.strftime('%H:%M:%S')
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from sqlalchemy.sql import text
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sql_query = text("""
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SELECT trip.trip_id, trip.route_id,
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time(origin_stop_time.departure_time),
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time(destination_stop_time.arrival_time),
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time(origin_stop_time.arrival_time),
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time(origin_stop_time.departure_time),
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origin_stop_time.drop_off_type,
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origin_stop_time.pickup_type,
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origin_stop_time.shape_dist_traveled,
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origin_stop_time.stop_headsign,
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origin_stop_time.stop_sequence,
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time(destination_stop_time.arrival_time),
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time(destination_stop_time.departure_time),
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destination_stop_time.drop_off_type,
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destination_stop_time.pickup_type,
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destination_stop_time.shape_dist_traveled,
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destination_stop_time.stop_headsign,
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destination_stop_time.stop_sequence
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FROM trips trip
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INNER JOIN calendar calendar
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ON trip.service_id = calendar.service_id
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INNER JOIN stop_times origin_stop_time
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ON trip.trip_id = origin_stop_time.trip_id
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INNER JOIN stops start_station
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ON origin_stop_time.stop_id = start_station.stop_id
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INNER JOIN stop_times destination_stop_time
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ON trip.trip_id = destination_stop_time.trip_id
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INNER JOIN stops end_station
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ON destination_stop_time.stop_id = end_station.stop_id
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WHERE calendar.{day_name} = 1
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AND time(origin_stop_time.departure_time) > time(:now_str)
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AND start_station.stop_id = :origin_station_id
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AND end_station.stop_id = :end_station_id
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AND origin_stop_time.stop_sequence < destination_stop_time.stop_sequence
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ORDER BY origin_stop_time.departure_time LIMIT 1;
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""".format(day_name=day_name))
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result = sched.engine.execute(sql_query, now_str=now_str,
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origin_station_id=origin_station.id,
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end_station_id=destination_station.id)
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item = {}
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for row in result:
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item = row
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if item == {}:
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return None
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today = datetime.datetime.today().strftime('%Y-%m-%d')
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departure_time_string = '{} {}'.format(today, item[2])
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arrival_time_string = '{} {}'.format(today, item[3])
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departure_time = datetime.datetime.strptime(departure_time_string,
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TIME_FORMAT)
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arrival_time = datetime.datetime.strptime(arrival_time_string,
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TIME_FORMAT)
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seconds_until = (departure_time-datetime.datetime.now()).total_seconds()
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minutes_until = int(seconds_until / 60)
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route = sched.routes_by_id(item[1])[0]
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origin_stoptime_arrival_time = '{} {}'.format(today, item[4])
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origin_stoptime_departure_time = '{} {}'.format(today, item[5])
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dest_stoptime_arrival_time = '{} {}'.format(today, item[11])
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dest_stoptime_depart_time = '{} {}'.format(today, item[12])
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origin_stop_time_dict = {
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'Arrival Time': origin_stoptime_arrival_time,
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'Departure Time': origin_stoptime_departure_time,
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'Drop Off Type': item[6], 'Pickup Type': item[7],
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'Shape Dist Traveled': item[8], 'Headsign': item[9],
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'Sequence': item[10]
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}
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destination_stop_time_dict = {
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'Arrival Time': dest_stoptime_arrival_time,
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'Departure Time': dest_stoptime_depart_time,
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'Drop Off Type': item[13], 'Pickup Type': item[14],
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'Shape Dist Traveled': item[15], 'Headsign': item[16],
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'Sequence': item[17]
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}
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return {
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'trip_id': item[0],
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'trip': sched.trips_by_id(item[0])[0],
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'route': route,
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'agency': sched.agencies_by_id(route.agency_id)[0],
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'origin_station': origin_station,
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'departure_time': departure_time,
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'destination_station': destination_station,
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'arrival_time': arrival_time,
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'seconds_until_departure': seconds_until,
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'minutes_until_departure': minutes_until,
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'origin_stop_time': origin_stop_time_dict,
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'destination_stop_time': destination_stop_time_dict
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}
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def setup_platform(hass, config, add_devices, discovery_info=None):
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"""Set up the GTFS sensor."""
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gtfs_dir = hass.config.path(DEFAULT_PATH)
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data = config.get(CONF_DATA)
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origin = config.get(CONF_ORIGIN)
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destination = config.get(CONF_DESTINATION)
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name = config.get(CONF_NAME)
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if not os.path.exists(gtfs_dir):
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os.makedirs(gtfs_dir)
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if not os.path.exists(os.path.join(gtfs_dir, data)):
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_LOGGER.error("The given GTFS data file/folder was not found")
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return False
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import pygtfs
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split_file_name = os.path.splitext(data)
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sqlite_file = "{}.sqlite".format(split_file_name[0])
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joined_path = os.path.join(gtfs_dir, sqlite_file)
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gtfs = pygtfs.Schedule(joined_path)
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# pylint: disable=no-member
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if len(gtfs.feeds) < 1:
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pygtfs.append_feed(gtfs, os.path.join(gtfs_dir, data))
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add_devices([GTFSDepartureSensor(gtfs, name, origin, destination)])
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class GTFSDepartureSensor(Entity):
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"""Implementation of an GTFS departures sensor."""
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def __init__(self, pygtfs, name, origin, destination):
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"""Initialize the sensor."""
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self._pygtfs = pygtfs
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self.origin = origin
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self.destination = destination
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self._custom_name = name
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self._name = ''
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self._unit_of_measurement = 'min'
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self._state = 0
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self._attributes = {}
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self.lock = threading.Lock()
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self.update()
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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 unit_of_measurement(self):
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"""Return the unit of measurement of this entity, if any."""
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return self._unit_of_measurement
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@property
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def device_state_attributes(self):
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"""Return the state attributes."""
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return self._attributes
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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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def update(self):
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"""Get the latest data from GTFS and update the states."""
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with self.lock:
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self._departure = get_next_departure(
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self._pygtfs, self.origin, self.destination)
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if not self._departure:
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self._state = 0
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self._attributes = {'Info': 'No more departures today'}
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if self._name == '':
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self._name = (self._custom_name or DEFAULT_NAME)
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return
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self._state = self._departure['minutes_until_departure']
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origin_station = self._departure['origin_station']
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destination_station = self._departure['destination_station']
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origin_stop_time = self._departure['origin_stop_time']
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destination_stop_time = self._departure['destination_stop_time']
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agency = self._departure['agency']
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route = self._departure['route']
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trip = self._departure['trip']
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name = '{} {} to {} next departure'
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self._name = (self._custom_name or
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name.format(agency.agency_name,
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origin_station.stop_id,
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destination_station.stop_id))
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# Build attributes
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self._attributes = {}
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def dict_for_table(resource):
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"""Return a dict for the SQLAlchemy resource given."""
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return dict((col, getattr(resource, col))
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for col in resource.__table__.columns.keys())
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def append_keys(resource, prefix=None):
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"""Properly format key val pairs to append to attributes."""
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for key, val in resource.items():
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if val == "" or val is None or key == 'feed_id':
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continue
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pretty_key = key.replace('_', ' ')
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pretty_key = pretty_key.title()
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pretty_key = pretty_key.replace('Id', 'ID')
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pretty_key = pretty_key.replace('Url', 'URL')
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if prefix is not None and \
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pretty_key.startswith(prefix) is False:
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pretty_key = '{} {}'.format(prefix, pretty_key)
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self._attributes[pretty_key] = val
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append_keys(dict_for_table(agency), 'Agency')
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append_keys(dict_for_table(route), 'Route')
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append_keys(dict_for_table(trip), 'Trip')
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append_keys(dict_for_table(origin_station), 'Origin Station')
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append_keys(dict_for_table(destination_station),
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'Destination Station')
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append_keys(origin_stop_time, 'Origin Stop')
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append_keys(destination_stop_time, 'Destination Stop')
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