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from datetime import datetime, timedelta, date, time
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from interval import IntervalSet
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from django.db.models import Q
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from model_utils.managers import InheritanceManager, PassThroughManager, InheritanceQuerySet
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from calebasse.agenda.conf import default
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from calebasse.utils import weeks_since_epoch, weekday_ranks
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from calebasse import agenda
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__all__ = (
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'EventManager',
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)
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class EventQuerySet(InheritanceQuerySet):
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def for_today(self, today=None):
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today = today or date.today()
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excluded = self.filter(exceptions__exception_date=today).values_list('id', flat=True)
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weeks = weeks_since_epoch(today)
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filters = [Q(start_datetime__gte=datetime.combine(today, time()),
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start_datetime__lte=datetime.combine(today, time(23,59,59)),
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recurrence_periodicity__isnull=True,
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canceled=False) ]
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base_q = Q(start_datetime__lte=datetime.combine(today, time(23,59,59)),
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canceled=False,
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recurrence_week_day=today.weekday(),
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recurrence_periodicity__isnull=False) & \
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(Q(recurrence_end_date__gte=today) |
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Q(recurrence_end_date__isnull=True)) & \
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~ Q(id__in=excluded)
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# week periods
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for period in range(1, 6):
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filters.append(base_q & Q(recurrence_week_offset=weeks % period,
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recurrence_week_period=period))
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# week parity
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parity = today.isocalendar()[1] % 2
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filters.append(base_q & Q(recurrence_week_parity=parity))
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# week ranks
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filters.append(base_q & Q(recurrence_week_rank__in=weekday_ranks(today)))
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qs = self.filter(reduce(Q.__or__, filters))
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qs = qs.distinct()
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return qs
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def today_occurrences(self, today=None):
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today = today or date.today()
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self = self.for_today(today)
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occurences = ( e.today_occurrence(today) for e in self )
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return sorted(occurences, key=lambda e: e.start_datetime)
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def daily_disponibilities(self, date, events, participants, time_tables,
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holidays):
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'''Slice the day into quarters between 8:00 and 19:00, and returns the
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list of particpants with their status amon free, busy and away for each
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hour and quarters.
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date - the date of day we slice
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occurences - a dictionnary of iterable of events indexed by participants
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participants - an iterable of participants
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time_tables - a dictionnaty of timetable applying for this day indexed by participants
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holidays - a dictionnary of holidays applying for this day indexed by participants
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'''
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result = dict()
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quarter = 0
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events_set = {}
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timetables_set = {}
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holidays_set = {}
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for participant in participants:
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events_set[participant.id] = IntervalSet((o.to_interval() for o in events[participant.id] if not o.is_event_absence()))
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timetables_set[participant.id] = IntervalSet((t.to_interval(date) for t in time_tables[participant.id]))
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holidays_set[participant.id] = IntervalSet((h.to_interval(date) for h in holidays[participant.id]))
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start_datetime = datetime(date.year, date.month, date.day, 8, 0)
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end_datetime = datetime(date.year, date.month, date.day, 8, 15)
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while (start_datetime.hour <= 19):
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for participant in participants:
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if not result.has_key(start_datetime.hour):
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result[start_datetime.hour] = [[], [], [], []]
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quarter = 0
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interval = IntervalSet.between(start_datetime, end_datetime, False)
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if interval.intersection(events_set[participant.id]):
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result[start_datetime.hour][quarter].append({'id': participant.id, 'dispo': 'busy'})
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elif interval.intersection(holidays_set[participant.id]):
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result[start_datetime.hour][quarter].append({'id': participant.id, 'dispo': 'busy'})
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elif not interval.intersection(timetables_set[participant.id]):
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result[start_datetime.hour][quarter].append({'id': participant.id, 'dispo': 'away'})
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else:
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result[start_datetime.hour][quarter].append({'id': participant.id, 'dispo': 'free'})
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quarter += 1
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start_datetime += timedelta(minutes=15)
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end_datetime += timedelta(minutes=15)
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return result
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class EventManager(PassThroughManager.for_queryset_class(EventQuerySet),
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InheritanceManager):
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""" This class allows you to manage events, appointment, ...
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"""
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def create_event(self, creator, title, event_type, participants=[], description='',
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services=[], start_datetime=None, end_datetime=None, room=None, note=None, periodicity=1, until=False, **kwargs):
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"""
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Convenience function to create an ``Event``, optionally create an
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``EventType``.
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Args:
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event_type: can be either an ``EventType`` object or the label
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is either created or retrieved.
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participants: List of CalebasseUser
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start_datetime: will default to the current hour if ``None``
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end_datetime: will default to ``start_datetime`` plus
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default.DEFAULT_EVENT_DURATION hour if ``None``
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Returns:
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Event object
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"""
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if isinstance(event_type, str):
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event_type, created = agenda.models.EventType.objects.get_or_create(
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label=event_type
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)
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if not start_datetime:
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now = datetime.now()
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start_datetime = datetime.combine(now.date, time(now.hour))
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if not end_datetime:
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end_datetime = start_datetime + default.DEFAULT_EVENT_DURATION
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if until is False:
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until = start_datetime.date()
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event = self.create(creator=creator,
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title=title, start_datetime=start_datetime,
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end_datetime=end_datetime, event_type=event_type,
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room=room, recurrence_periodicity=periodicity,
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recurrence_end_date=until, **kwargs)
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event.services = services
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event.participants = participants
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return event
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def next_appointment(self, patient_record):
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qs = self.next_appointments(patient_record)
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if qs:
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return qs[0]
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else:
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return None
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def next_appointments(self, patient_record, today=None):
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from calebasse.actes.models import Act
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acts = Act.objects.next_acts(patient_record, today=today) \
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.filter(parent_event__isnull=False) \
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.select_related()
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return [ a.parent_event.today_occurrence(a.date) for a in acts ]
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def last_appointment(self, patient_record):
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qs = self.last_appointments(patient_record)
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if qs:
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return qs[0]
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else:
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return None
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def last_appointments(self, patient_record, today=None):
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from calebasse.actes.models import Act
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acts = Act.objects.last_acts(patient_record, today=today) \
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.filter(parent_event__isnull=False) \
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.select_related()
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return [ a.parent_event.today_occurrence(a.date) for a in acts ]
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