703 lines
28 KiB
Python
703 lines
28 KiB
Python
# chrono - agendas system
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# Copyright (C) 2016 Entr'ouvert
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Affero General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from collections import defaultdict
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import datetime
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from django.core.urlresolvers import reverse
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from django.db import transaction
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from django.http import Http404, HttpResponse
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from django.shortcuts import get_object_or_404
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from django.utils.dateparse import parse_date
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from django.utils.encoding import force_text
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from django.utils.timezone import now, make_aware, localtime
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from django.utils.translation import gettext_noop
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from django.utils.translation import ugettext_lazy as _
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from rest_framework import permissions, serializers, status
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from rest_framework.views import APIView
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from chrono.api.utils import Response
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from ..agendas.models import (Agenda, Event, Booking, MeetingType,
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TimePeriod, Desk)
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from ..interval import Intervals
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def format_response_datetime(dt):
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return localtime(dt).strftime('%Y-%m-%d %H:%M:%S')
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def get_exceptions_by_desk(agenda):
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exceptions_by_desk = {}
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for desk in Desk.objects.filter(agenda=agenda).prefetch_related('timeperiodexception_set'):
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exceptions_by_desk[desk.id] = [(exc.start_datetime, exc.end_datetime) for exc in desk.timeperiodexception_set.all()]
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return exceptions_by_desk
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def get_all_slots(agenda, meeting_type):
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min_datetime = now() + datetime.timedelta(days=agenda.minimal_booking_delay)
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max_datetime = now() + datetime.timedelta(days=agenda.maximal_booking_delay)
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min_datetime = min_datetime.replace(hour=0, minute=0, second=0, microsecond=0)
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max_datetime = max_datetime.replace(hour=0, minute=0, second=0, microsecond=0)
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max_datetime = max_datetime + datetime.timedelta(days=1)
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time_period_filters = {
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'min_datetime': min_datetime,
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'max_datetime': max_datetime,
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'meeting_type': meeting_type
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}
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base_date = now().date()
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open_slots_by_desk = defaultdict(lambda: Intervals())
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for time_period in TimePeriod.objects.filter(desk__agenda=agenda):
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duration = (datetime.datetime.combine(base_date, time_period.end_time) -
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datetime.datetime.combine(base_date, time_period.start_time)).seconds / 60
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if duration < meeting_type.duration:
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# skip time period that can't even hold a single meeting
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continue
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for slot in time_period.get_time_slots(**time_period_filters):
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slot.full = False
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open_slots_by_desk[time_period.desk_id].add(slot.start_datetime, slot.end_datetime, slot)
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# remove excluded slot
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excluded_slot_by_desk = get_exceptions_by_desk(agenda)
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for desk, excluded_interval in excluded_slot_by_desk.items():
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for interval in excluded_interval:
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begin, end = interval
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open_slots_by_desk[desk].remove_overlap(localtime(begin), localtime(end))
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for event in agenda.event_set.filter(
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agenda=agenda, start_datetime__gte=min_datetime,
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start_datetime__lte=max_datetime + datetime.timedelta(meeting_type.duration)).select_related(
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'meeting_type').exclude(
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booking__cancellation_datetime__isnull=False):
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for slot in open_slots_by_desk[event.desk_id].search_data(event.start_datetime, event.end_datetime):
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slot.full = True
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slots = []
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for desk in open_slots_by_desk:
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slots.extend(open_slots_by_desk[desk].iter_data())
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slots.sort(key=lambda slot: slot.start_datetime)
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return slots
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def get_agenda_detail(request, agenda):
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agenda_detail = {
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'id': agenda.slug,
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'slug': agenda.slug, # kept for compatibility
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'text': agenda.label,
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'kind': agenda.kind,
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'minimal_booking_delay': agenda.minimal_booking_delay,
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'maximal_booking_delay': agenda.maximal_booking_delay,
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}
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if agenda.kind == 'events':
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agenda_detail['api'] = {
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'datetimes_url': request.build_absolute_uri(
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reverse('api-agenda-datetimes',
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kwargs={'agenda_identifier': agenda.slug}))
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}
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elif agenda.kind == 'meetings':
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agenda_detail['api'] = {
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'meetings_url': request.build_absolute_uri(
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reverse('api-agenda-meetings',
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kwargs={'agenda_identifier': agenda.slug})),
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'desks_url': request.build_absolute_uri(
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reverse('api-agenda-desks',
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kwargs={'agenda_identifier': agenda.slug}))
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}
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agenda_detail['api']['fillslots_url'] = request.build_absolute_uri(
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reverse('api-agenda-fillslots',
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kwargs={'agenda_identifier': agenda.slug}))
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return agenda_detail
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def get_event_places(event):
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places = {
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'total': event.places,
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'reserved': event.booked_places,
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'available': event.places - event.booked_places,
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}
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if event.waiting_list_places:
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places['waiting_list_total'] = event.waiting_list_places
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places['waiting_list_reserved'] = event.waiting_list
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places['waiting_list_available'] = (event.waiting_list_places - event.waiting_list)
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return places
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class Agendas(APIView):
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permission_classes = ()
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def get(self, request, format=None):
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agendas = [get_agenda_detail(request, agenda)
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for agenda in Agenda.objects.all().order_by('label')]
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return Response({'data': agendas})
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agendas = Agendas.as_view()
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class AgendaDetail(APIView):
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'''
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Retrieve an agenda instance.
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'''
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permission_classes = ()
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def get(self, request, agenda_identifier):
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agenda = get_object_or_404(Agenda, slug=agenda_identifier)
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return Response({'data': get_agenda_detail(request, agenda)})
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agenda_detail = AgendaDetail.as_view()
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class Datetimes(APIView):
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permission_classes = ()
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def get(self, request, agenda_identifier=None, format=None):
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try:
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agenda = Agenda.objects.get(slug=agenda_identifier)
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except Agenda.DoesNotExist:
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try:
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# legacy access by agenda id
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agenda = Agenda.objects.get(id=int(agenda_identifier))
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except (ValueError, Agenda.DoesNotExist):
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raise Http404()
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if agenda.kind != 'events':
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raise Http404('agenda found, but it was not an events agenda')
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entries = Event.objects.filter(agenda=agenda)
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# we never want to allow booking for past events.
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entries = entries.filter(start_datetime__gte=localtime(now()))
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if agenda.minimal_booking_delay:
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entries = entries.filter(
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start_datetime__gte=localtime(now() + datetime.timedelta(days=agenda.minimal_booking_delay)).replace(hour=0, minute=0))
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if agenda.maximal_booking_delay:
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entries = entries.filter(
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start_datetime__lt=localtime(now() + datetime.timedelta(days=agenda.maximal_booking_delay)).replace(hour=0, minute=0))
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if 'date_start' in request.GET:
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entries = entries.filter(start_datetime__gte=make_aware(
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datetime.datetime.combine(parse_date(request.GET['date_start']), datetime.time(0, 0))))
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if 'date_end' in request.GET:
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entries = entries.filter(start_datetime__lt=make_aware(
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datetime.datetime.combine(parse_date(request.GET['date_end']), datetime.time(0, 0))))
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response = {'data': [{'id': x.id,
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'slug': x.slug,
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'text': force_text(x),
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'datetime': format_response_datetime(x.start_datetime),
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'description': x.description,
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'disabled': bool(x.full),
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'api': {
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'fillslot_url': request.build_absolute_uri(
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reverse('api-fillslot',
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kwargs={
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'agenda_identifier': agenda.slug,
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'event_identifier': x.slug or x.id,
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})),
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'status_url': request.build_absolute_uri(
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reverse('api-event-status',
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kwargs={
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'agenda_identifier': agenda.slug,
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'event_identifier': x.slug or x.id,
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}))
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},
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} for x in entries]}
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return Response(response)
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datetimes = Datetimes.as_view()
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class MeetingDatetimes(APIView):
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permission_classes = ()
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def get(self, request, agenda_identifier=None, meeting_identifier=None, format=None):
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try:
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if agenda_identifier is None:
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# legacy access by meeting id
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meeting_type = MeetingType.objects.get(id=meeting_identifier)
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else:
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meeting_type = MeetingType.objects.get(slug=meeting_identifier,
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agenda__slug=agenda_identifier)
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except (ValueError, MeetingType.DoesNotExist):
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raise Http404()
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agenda = meeting_type.agenda
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now_datetime = now()
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slots = get_all_slots(agenda, meeting_type)
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entries = {}
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for slot in slots:
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if slot.start_datetime < now_datetime:
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continue
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key = (slot.start_datetime, slot.end_datetime)
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if key in entries and slot.full:
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continue
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entries[key] = slot
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slots = sorted(entries.values(), key=lambda x: x.start_datetime)
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# create fillslot API URL as a template, to avoid expensive calls
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# to request.build_absolute_uri()
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fake_event_identifier = '__event_identifier__'
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fillslot_url = request.build_absolute_uri(
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reverse('api-fillslot',
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kwargs={
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'agenda_identifier': agenda.slug,
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'event_identifier': fake_event_identifier,
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}))
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response = {'data': [{'id': x.id,
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'datetime': format_response_datetime(x.start_datetime),
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'text': force_text(x),
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'disabled': bool(x.full),
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'api': {
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'fillslot_url': fillslot_url.replace(fake_event_identifier, str(x.id)),
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},
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} for x in slots]}
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return Response(response)
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meeting_datetimes = MeetingDatetimes.as_view()
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class MeetingList(APIView):
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permission_classes = ()
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def get(self, request, agenda_identifier=None, format=None):
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try:
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agenda = Agenda.objects.get(slug=agenda_identifier)
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except Agenda.DoesNotExist:
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raise Http404()
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if agenda.kind != 'meetings':
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raise Http404('agenda found, but it was not a meetings agenda')
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meeting_types = []
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for meeting_type in agenda.meetingtype_set.all():
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meeting_types.append({
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'text': meeting_type.label,
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'id': meeting_type.slug,
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'duration': meeting_type.duration,
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'api': {
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'datetimes_url': request.build_absolute_uri(
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reverse('api-agenda-meeting-datetimes',
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kwargs={'agenda_identifier': agenda.slug,
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'meeting_identifier': meeting_type.slug})),
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}
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})
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return Response({'data': meeting_types})
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meeting_list = MeetingList.as_view()
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class AgendaDeskList(APIView):
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permission_classes = ()
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def get(self, request, agenda_identifier=None, format=None):
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try:
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agenda = Agenda.objects.get(slug=agenda_identifier)
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except Agenda.DoesNotExist:
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raise Http404()
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if agenda.kind != 'meetings':
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raise Http404('agenda found, but it was not a meetings agenda')
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desks = [{'id': x.slug, 'text': x.label} for x in agenda.desk_set.all()]
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return Response({'data': desks})
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agenda_desk_list = AgendaDeskList.as_view()
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class SlotSerializer(serializers.Serializer):
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'''
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payload to fill one slot. The slot (event id) is in the URL.
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'''
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label = serializers.CharField(max_length=250, allow_blank=True)
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user_name = serializers.CharField(max_length=250, allow_blank=True)
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user_display_label = serializers.CharField(max_length=250, allow_blank=True)
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backoffice_url = serializers.URLField(allow_blank=True)
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count = serializers.IntegerField(min_value=1)
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cancel_booking_id = serializers.CharField(max_length=250, allow_blank=True, allow_null=True)
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class SlotsSerializer(SlotSerializer):
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'''
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payload to fill multiple slots: same as SlotSerializer, but the
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slots list is in the payload.
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'''
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slots = serializers.ListField(required=True,
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child=serializers.CharField(max_length=64, allow_blank=False))
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class Fillslots(APIView):
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permission_classes = (permissions.IsAuthenticated,)
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serializer_class = SlotsSerializer
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def post(self, request, agenda_identifier=None, event_identifier=None, format=None):
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return self.fillslot(request=request, agenda_identifier=agenda_identifier,
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format=format)
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def fillslot(self, request, agenda_identifier=None, slots=[], format=None):
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multiple_booking = bool(not slots)
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try:
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agenda = Agenda.objects.get(slug=agenda_identifier)
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except Agenda.DoesNotExist:
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try:
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# legacy access by agenda id
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agenda = Agenda.objects.get(id=int(agenda_identifier))
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except (ValueError, Agenda.DoesNotExist):
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raise Http404()
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serializer = self.serializer_class(data=request.data, partial=True)
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if not serializer.is_valid():
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return Response({
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'err': 1,
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'err_class': 'invalid payload',
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'err_desc': _('invalid payload'),
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'errors': serializer.errors
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}, status=status.HTTP_400_BAD_REQUEST)
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payload = serializer.validated_data
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if 'slots' in payload:
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slots = payload['slots']
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if not slots:
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return Response({
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'err': 1,
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'err_class': 'slots list cannot be empty',
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'err_desc': _('slots list cannot be empty'),
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}, status=status.HTTP_400_BAD_REQUEST)
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if 'count' in payload:
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places_count = payload['count']
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elif 'count' in request.query_params:
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# legacy: count in the query string
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try:
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places_count = int(request.query_params['count'])
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except ValueError:
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return Response({
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'err': 1,
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'err_class': 'invalid value for count (%s)' % request.query_params['count'],
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'err_desc': _('invalid value for count (%s)') % request.query_params['count'],
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}, status=status.HTTP_400_BAD_REQUEST)
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else:
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places_count = 1
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if places_count <= 0:
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return Response({
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'err': 1,
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'err_class': 'count cannot be less than or equal to zero',
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'err_desc': _('count cannot be less than or equal to zero'),
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}, status=status.HTTP_400_BAD_REQUEST)
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to_cancel_booking = None
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cancel_booking_id = None
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if payload.get('cancel_booking_id'):
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try:
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cancel_booking_id = int(payload.get('cancel_booking_id'))
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except (ValueError, TypeError):
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return Response({
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'err': 1,
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'err_class': 'cancel_booking_id is not an integer',
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'err_desc': _('cancel_booking_id is not an integer'),
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}, status=status.HTTP_400_BAD_REQUEST)
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if cancel_booking_id is not None:
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cancel_error = None
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try:
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to_cancel_booking = Booking.objects.get(pk=cancel_booking_id)
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if to_cancel_booking.cancellation_datetime:
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cancel_error = gettext_noop('cancel booking: booking already cancelled')
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else:
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to_cancel_places_count = to_cancel_booking.secondary_booking_set.count() + 1
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if places_count != to_cancel_places_count:
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cancel_error = gettext_noop('cancel booking: count is different')
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except Booking.DoesNotExist:
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cancel_error = gettext_noop('cancel booking: booking does no exist')
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if cancel_error:
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return Response({
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'err': 1,
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'err_class': cancel_error,
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'err_desc': _(cancel_error),
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})
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extra_data = {}
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for k, v in request.data.items():
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if k not in serializer.validated_data:
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extra_data[k] = v
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available_desk = None
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if agenda.kind == 'meetings':
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# slots are actually timeslot ids (meeting_type:start_datetime), not events ids.
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# split them back to get both parts
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meeting_type_id = slots[0].split(':')[0]
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datetimes = set()
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for slot in slots:
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try:
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meeting_type_id_, datetime_str = slot.split(':')
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except ValueError:
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return Response({
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'err': 1,
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'err_class': 'invalid slot: %s' % slot,
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'err_desc': _('invalid slot: %s') % slot,
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}, status=status.HTTP_400_BAD_REQUEST)
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if meeting_type_id_ != meeting_type_id:
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return Response({
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'err': 1,
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'err_class': 'all slots must have the same meeting type id (%s)' % meeting_type_id,
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'err_desc': _('all slots must have the same meeting type id (%s)') % meeting_type_id,
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}, status=status.HTTP_400_BAD_REQUEST)
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datetimes.add(make_aware(datetime.datetime.strptime(datetime_str, '%Y-%m-%d-%H%M')))
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# get all free slots and separate them by desk
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all_slots = get_all_slots(agenda, MeetingType.objects.get(id=meeting_type_id))
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all_slots = [slot for slot in all_slots if not slot.full]
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datetimes_by_desk = defaultdict(set)
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for slot in all_slots:
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datetimes_by_desk[slot.desk.id].add(slot.start_datetime)
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# search first desk where all requested slots are free
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for available_desk_id in sorted(datetimes_by_desk.keys()):
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if datetimes.issubset(datetimes_by_desk[available_desk_id]):
|
|
available_desk = Desk.objects.get(id=available_desk_id)
|
|
break
|
|
else:
|
|
return Response({
|
|
'err': 1,
|
|
'err_class': 'no more desk available',
|
|
'err_desc': _('no more desk available'),
|
|
})
|
|
|
|
# all datetimes are free, book them in order
|
|
datetimes = list(datetimes)
|
|
datetimes.sort()
|
|
|
|
# booking requires real Event objects (not lazy Timeslots);
|
|
# create them now, with data from the slots and the desk we found.
|
|
events = []
|
|
for start_datetime in datetimes:
|
|
events.append(Event.objects.create(agenda=agenda,
|
|
meeting_type_id=meeting_type_id,
|
|
start_datetime=start_datetime,
|
|
full=False, places=1,
|
|
desk=available_desk))
|
|
else:
|
|
try:
|
|
events = Event.objects.filter(id__in=[int(s) for s in slots]).order_by('start_datetime')
|
|
except ValueError:
|
|
events = Event.objects.filter(slug__in=slots).order_by('start_datetime')
|
|
|
|
# search free places. Switch to waiting list if necessary.
|
|
in_waiting_list = False
|
|
for event in events:
|
|
if event.waiting_list_places:
|
|
if (event.booked_places + places_count) > event.places or event.waiting_list:
|
|
# if this is full or there are people waiting, put new bookings
|
|
# in the waiting list.
|
|
in_waiting_list = True
|
|
if (event.waiting_list + places_count) > event.waiting_list_places:
|
|
return Response({
|
|
'err': 1,
|
|
'err_class': 'sold out',
|
|
'err_desc': _('sold out'),
|
|
})
|
|
else:
|
|
if (event.booked_places + places_count) > event.places:
|
|
return Response({
|
|
'err': 1,
|
|
'err_class': 'sold out',
|
|
'err_desc': _('sold out')
|
|
})
|
|
|
|
with transaction.atomic():
|
|
if to_cancel_booking:
|
|
cancelled_booking_id = to_cancel_booking.pk
|
|
to_cancel_booking.cancel()
|
|
|
|
# now we have a list of events, book them.
|
|
primary_booking = None
|
|
for event in events:
|
|
for i in range(places_count):
|
|
new_booking = Booking(event_id=event.id,
|
|
in_waiting_list=in_waiting_list,
|
|
label=payload.get('label', ''),
|
|
user_name=payload.get('user_name', ''),
|
|
backoffice_url=payload.get('backoffice_url', ''),
|
|
user_display_label=payload.get('user_display_label', ''),
|
|
extra_data=extra_data)
|
|
if primary_booking is not None:
|
|
new_booking.primary_booking = primary_booking
|
|
new_booking.save()
|
|
if primary_booking is None:
|
|
primary_booking = new_booking
|
|
|
|
response = {
|
|
'err': 0,
|
|
'in_waiting_list': in_waiting_list,
|
|
'booking_id': primary_booking.id,
|
|
'datetime': format_response_datetime(events[0].start_datetime),
|
|
'api': {
|
|
'cancel_url': request.build_absolute_uri(
|
|
reverse('api-cancel-booking', kwargs={'booking_pk': primary_booking.id})),
|
|
'ics_url': request.build_absolute_uri(
|
|
reverse('api-booking-ics', kwargs={'booking_pk': primary_booking.id})),
|
|
}
|
|
}
|
|
if in_waiting_list:
|
|
response['api']['accept_url'] = request.build_absolute_uri(
|
|
reverse('api-accept-booking', kwargs={'booking_pk': primary_booking.id}))
|
|
if agenda.kind == 'meetings':
|
|
response['end_datetime'] = format_response_datetime(events[-1].end_datetime)
|
|
response['duration'] = (events[-1].end_datetime - events[-1].start_datetime).seconds // 60
|
|
if available_desk:
|
|
response['desk'] = {
|
|
'label': available_desk.label,
|
|
'slug': available_desk.slug}
|
|
if to_cancel_booking:
|
|
response['cancelled_booking_id'] = cancelled_booking_id
|
|
if agenda.kind == 'events' and not multiple_booking:
|
|
event = events[0]
|
|
response['places'] = get_event_places(event)
|
|
|
|
return Response(response)
|
|
|
|
fillslots = Fillslots.as_view()
|
|
|
|
|
|
class Fillslot(Fillslots):
|
|
serializer_class = SlotSerializer
|
|
|
|
def post(self, request, agenda_identifier=None, event_identifier=None, format=None):
|
|
return self.fillslot(request=request,
|
|
agenda_identifier=agenda_identifier,
|
|
slots=[event_identifier], # fill a "list on one slot"
|
|
format=format)
|
|
|
|
fillslot = Fillslot.as_view()
|
|
|
|
|
|
class BookingAPI(APIView):
|
|
permission_classes = (permissions.IsAuthenticated,)
|
|
|
|
def initial(self, request, *args, **kwargs):
|
|
super(BookingAPI, self).initial(request, *args, **kwargs)
|
|
self.booking = Booking.objects.get(id=kwargs.get('booking_pk'),
|
|
cancellation_datetime__isnull=True)
|
|
|
|
def delete(self, request, *args, **kwargs):
|
|
self.booking.cancel()
|
|
response = {'err': 0, 'booking_id': self.booking.id}
|
|
return Response(response)
|
|
|
|
booking = BookingAPI.as_view()
|
|
|
|
|
|
class CancelBooking(APIView):
|
|
'''
|
|
Cancel a booking.
|
|
|
|
It will return an error (code 1) if the booking was already cancelled.
|
|
'''
|
|
permission_classes = (permissions.IsAuthenticated,)
|
|
|
|
def post(self, request, booking_pk=None, format=None):
|
|
booking = get_object_or_404(Booking, id=booking_pk)
|
|
if booking.cancellation_datetime:
|
|
response = {
|
|
'err': 1,
|
|
'err_class': 'already cancelled',
|
|
'err_desc': _('already cancelled'),
|
|
}
|
|
return Response(response)
|
|
booking.cancel()
|
|
response = {'err': 0, 'booking_id': booking.id}
|
|
return Response(response)
|
|
|
|
cancel_booking = CancelBooking.as_view()
|
|
|
|
|
|
class AcceptBooking(APIView):
|
|
'''
|
|
Accept a booking currently in the waiting list.
|
|
|
|
It will return error codes if the booking was cancelled before (code 1) and
|
|
if the booking was not in waiting list (code 2).
|
|
'''
|
|
permission_classes = (permissions.IsAuthenticated,)
|
|
|
|
def post(self, request, booking_pk=None, format=None):
|
|
booking = get_object_or_404(Booking, id=booking_pk)
|
|
if booking.cancellation_datetime:
|
|
response = {
|
|
'err': 1,
|
|
'err_class': 'booking is cancelled',
|
|
'err_desc': _('booking is cancelled'),
|
|
}
|
|
return Response(response)
|
|
if not booking.in_waiting_list:
|
|
response = {
|
|
'err': 2,
|
|
'err_class': 'booking is not in waiting list',
|
|
'err_desc': _('booking is not in waiting list'),
|
|
}
|
|
return Response(response)
|
|
booking.accept()
|
|
response = {'err': 0, 'booking_id': booking.id}
|
|
return Response(response)
|
|
|
|
accept_booking = AcceptBooking.as_view()
|
|
|
|
|
|
class SlotStatus(APIView):
|
|
permission_classes = (permissions.IsAuthenticated,)
|
|
|
|
def get_object(self, event_identifier):
|
|
try:
|
|
return Event.objects.get(slug=event_identifier)
|
|
except Event.DoesNotExist:
|
|
try:
|
|
# legacy access by event id
|
|
return Event.objects.get(pk=int(event_identifier))
|
|
except (ValueError, Event.DoesNotExist):
|
|
raise Http404()
|
|
|
|
def get(self, request, agenda_identifier=None, event_identifier=None, format=None):
|
|
event = self.get_object(event_identifier)
|
|
response = {
|
|
'err': 0,
|
|
'places': get_event_places(event),
|
|
}
|
|
return Response(response)
|
|
|
|
|
|
slot_status = SlotStatus.as_view()
|
|
|
|
|
|
class BookingICS(APIView):
|
|
permission_classes = (permissions.IsAuthenticated,)
|
|
|
|
def get(self, request, booking_pk=None, format=None):
|
|
booking = get_object_or_404(Booking, id=booking_pk)
|
|
response = HttpResponse(booking.get_ics(request), content_type='text/calendar')
|
|
return response
|
|
|
|
booking_ics = BookingICS.as_view()
|