trainvel/sncf/api/views.py

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from datetime import datetime, timedelta, date
from django.db.models import F, Q, Value
from django_filters.rest_framework import DjangoFilterBackend
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from rest_framework import viewsets
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from rest_framework.filters import OrderingFilter
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from sncf.api.serializers import AgencySerializer, StopSerializer, RouteSerializer, TripSerializer, \
StopTimeSerializer, CalendarSerializer, CalendarDateSerializer, TransferSerializer, \
FeedInfoSerializer
from sncfgtfs.models import Agency, Stop, Route, Trip, StopTime, Calendar, CalendarDate, \
Transfer, FeedInfo
class AgencyViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Agency.objects.all()
serializer_class = AgencySerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class StopViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Stop.objects.all()
serializer_class = StopSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class RouteViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Route.objects.all()
serializer_class = RouteSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class TripViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Trip.objects.all()
serializer_class = TripSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class StopTimeViewSet(viewsets.ReadOnlyModelViewSet):
queryset = StopTime.objects.order_by('id').all()
serializer_class = StopTimeSerializer
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filter_backends = [DjangoFilterBackend, OrderingFilter]
filterset_fields = '__all__'
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ordering_fields = ['arrival_time', 'departure_time', 'stop_sequence', ]
ordering = ['stop_sequence', ]
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class CalendarViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Calendar.objects.all()
serializer_class = CalendarSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class CalendarDateViewSet(viewsets.ReadOnlyModelViewSet):
queryset = CalendarDate.objects.all()
serializer_class = CalendarDateSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
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class TransferViewSet(viewsets.ReadOnlyModelViewSet):
queryset = Transfer.objects.all()
serializer_class = TransferSerializer
filter_backends = [DjangoFilterBackend]
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class FeedInfoViewSet(viewsets.ReadOnlyModelViewSet):
queryset = FeedInfo.objects.all()
serializer_class = FeedInfoSerializer
filter_backends = [DjangoFilterBackend]
filterset_fields = '__all__'
class NextDeparturesViewSet(viewsets.ReadOnlyModelViewSet):
queryset = StopTime.objects.none()
serializer_class = StopTimeSerializer
filter_backends = [DjangoFilterBackend]
def get_queryset(self):
now = datetime.now()
stop_id = self.request.query_params.get('stop_id', None)
stop_name = self.request.query_params.get('stop_name', None)
query_date = date.fromisoformat(self.request.query_params.get('date', now.date().isoformat()))
query_time = self.request.query_params.get('time', now.time().isoformat(timespec='seconds'))
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query_time = timedelta(seconds=int(query_time[:2]) * 3600
+ int(query_time[3:5]) * 60
+ (int(query_time[6:]) if len(query_time) > 6 else 0))
yesterday = query_date - timedelta(days=1)
time_yesterday = query_time + timedelta(days=1)
tomorrow = query_date + timedelta(days=1)
stop_filter = Q(stop__location_type=0)
if stop_id:
stop = Stop.objects.get(id=stop_id)
stops = Stop.objects.filter(Q(id=stop_id)
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| Q(parent_station=stop_id))
if stop.location_type == 0:
stops |= Stop.objects.filter(parent_station=stop.parent_station_id)
stop_filter = Q(stop__in=stops.values_list('id', flat=True))
elif stop_name:
stops = Stop.objects.filter(name__iexact=stop_name).values_list('id', flat=True)
stop_filter = Q(stop__in=stops)
def calendar_filter(d: date):
return Q(trip__service_id__in=CalendarDate.objects.filter(date=d, exception_type=1)
.values_list('service_id')) \
| Q(trip__service_id__in=Calendar.objects.filter(
start_date__lte=d,
end_date__gte=d,
**{f"{d:%A}".lower(): True})
.filter(~Q(id__in=CalendarDate.objects.filter(date=d, exception_type=2)
.values_list('service_id', flat=True)))
.values_list('id'))
qs_today = StopTime.objects.filter(stop_filter) \
.filter(Q(departure_time__gte=query_time, pickup_type=0), calendar_filter(query_date)) \
.annotate(departure_date=Value(query_date)) \
.annotate(departure_time_24h=F('departure_time'))
qs_yesterday = StopTime.objects.filter(stop_filter) \
.filter(Q(departure_time__gte=time_yesterday, pickup_type=0), calendar_filter(yesterday)) \
.annotate(departure_date=Value(yesterday)) \
.annotate(departure_time_24h=F('departure_time') - timedelta(days=1))
qs_tomorrow = StopTime.objects.filter(stop_filter) \
.filter(Q(departure_time__gte=timedelta(0), pickup_type=0), calendar_filter(tomorrow)) \
.annotate(departure_date=Value(tomorrow)) \
.annotate(departure_time_24h=F('departure_time') + timedelta(days=1))
return qs_today.union(qs_yesterday).union(qs_tomorrow).order_by("departure_time_24h").all()
class NextArrivalsViewSet(viewsets.ReadOnlyModelViewSet):
queryset = StopTime.objects.none()
serializer_class = StopTimeSerializer
filter_backends = [DjangoFilterBackend]
def get_queryset(self):
now = datetime.now()
stop_id = self.request.query_params.get('stop_id', None)
stop_name = self.request.query_params.get('stop_name', None)
query_date = date.fromisoformat(self.request.query_params.get('date', now.date().isoformat()))
query_time = self.request.query_params.get('time', now.time().isoformat(timespec='seconds'))
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query_time = timedelta(seconds=int(query_time[:2]) * 3600
+ int(query_time[3:5]) * 60
+ (int(query_time[6:]) if len(query_time) > 6 else 0))
yesterday = query_date - timedelta(days=1)
time_yesterday = query_time + timedelta(days=1)
tomorrow = query_date + timedelta(days=1)
stop_filter = Q(stop__location_type=0)
if stop_id:
stop = Stop.objects.get(id=stop_id)
stops = Stop.objects.filter(Q(id=stop_id)
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| Q(parent_station=stop_id))
if stop.location_type == 0:
stops |= Stop.objects.filter(parent_station=stop.parent_station_id)
stop_filter = Q(stop__in=stops.values_list('id', flat=True))
elif stop_name:
stops = Stop.objects.filter(name__iexact=stop_name).values_list('id', flat=True)
stop_filter = Q(stop__in=stops)
def calendar_filter(d: date):
return Q(trip__service_id__in=CalendarDate.objects.filter(date=d, exception_type=1)
.values_list('service_id')) \
| Q(trip__service_id__in=Calendar.objects.filter(
start_date__lte=d,
end_date__gte=d,
**{f"{d:%A}".lower(): True})
.filter(~Q(id__in=CalendarDate.objects.filter(date=d, exception_type=2)
.values_list('service_id', flat=True)))
.values_list('id'))
qs_today = StopTime.objects.filter(stop_filter) \
.filter(Q(arrival_time__gte=query_time, drop_off_type=0), calendar_filter(query_date)) \
.annotate(arrival_date=Value(query_date)) \
.annotate(arrival_time_24h=F('arrival_time'))
qs_yesterday = StopTime.objects.filter(stop_filter) \
.filter(Q(arrival_time__gte=time_yesterday, drop_off_type=0), calendar_filter(yesterday)) \
.annotate(arrival_date=Value(yesterday)) \
.annotate(arrival_time_24h=F('arrival_time') - timedelta(days=1))
qs_tomorrow = StopTime.objects.filter(stop_filter) \
.filter(Q(arrival_time__gte=timedelta(0), drop_off_type=0), calendar_filter(tomorrow)) \
.annotate(arrival_date=Value(tomorrow)) \
.annotate(arrival_time_24h=F('arrival_time') + timedelta(days=1))
return qs_today.union(qs_yesterday).union(qs_tomorrow).order_by("arrival_time_24h").all()