def trainPosition():
to_airport = {}
from_airport = {}
current_sec = int(time.time())
for i in getWSJsonResponse(OSE_WS_URL):
# get values from record
id = i["id"]
trip_id = i["tripId"]
start = i["tripStartEn"]
end = i["tripEndEn"]
end2 = i["endStationNameEn"]
station = i["closestStationId"]
speed = i["speed"]
lat = float(i["lat"])
lon = float(i["lon"])
distance = distance_from_station(lat, lon, station)
# create record
rc = {'start': start, 'end': end, 'end2': end2, 'station': getStation(station), 'speed': speed, 'id': id, 'trip_id': trip_id, 'distance': distance}
# default direction from airport
direction = "d"
session_id = id + "_" + direction
# airport to liosia, kiato
if (start in ['AIRPORT'] and (end in ['A. LIOSSIA', 'KIATO'] or end2 in ['A. LIOSSIA', 'KIATO'])) or (start in ['A. LIOSSIA'] and (end in ['KIATO'] or end2 in ['KIATO'])):
rc['next_station'] = getNextStation(station, speed, 1)
rc['prev_station'] = getNextStation(station, speed, 2)
from_airport[id] = rc
from_airport[id].update(checkPrev(session_id, current_sec))
# kiato,liosia to airport
elif start in ['A. LIOSSIA', 'KIATO'] and end in ['AIRPORT'] or end2 in ['AIRPORT']:
rc['next_station'] = getNextStation(station, speed, 2)
rc['prev_station'] = getNextStation(station, speed, 1)
to_airport[id] = rc
# update direction
direction = "r"
session_id = id + "_" + direction
to_airport[id].update(checkPrev(session_id, current_sec))
# update session if has changed
if (not session.has_key(session_id)) or session.get(session_id)[0] != st.get(station, [station, '', ''])[0] or distance != session.get(session_id)[2]:
session[session_id] = [st.get(station, [station, '', ''])[0], current_sec, distance]
# sort dictionaries based on id
return {'stations':stationsToDisplay(),
'stationsFrom':trainsToDisplay(from_airport.items()),
'stationsTo':trainsToDisplay(to_airport.items()),
'from_airport':OrderedDict(sorted(from_airport.items(), key=lambda t: t[0])),
'to_airport':OrderedDict(sorted(to_airport.items(), key=lambda t: t[0]))}
def getStation(station):
return st.get(station, [station, '', ''])[0]
