Produits Entr'ouvert » Calebasse

from datetime import datetime, timedelta

from interval import IntervalSet

from django.db import models

from model_utils.managers import InheritanceManager

from calebasse.agenda.conf import default

from calebasse import agenda

__all__ = (

    'EventManager',

    'OccurrenceManager',

)

class EventManager(InheritanceManager):

    """ This class allows you to manage events, appointment, ...

    """

    def _set_event(self, event, participants=[], description='', services=[],

            start_datetime=None, end_datetime=None, note=None, room=None, **rrule_params):

        """ Private method to configure an Event or an EventAct

        """

        event.description = description

        event.participants = participants

        event.services = services

        event.room = room

        if note is not None:

            event.notes.create(note=note)

        start_datetime = start_datetime or datetime.now().replace(

            minute=0, second=0, microsecond=0

        )

        occurence_duration = default.DEFAULT_OCCURRENCE_DURATION

        end_datetime = end_datetime or start_datetime + occurence_duration

        event.add_occurrences(start_datetime, end_datetime, **rrule_params)

        event.save()

        return event

    def create_event(self, title, event_type, participants=[], description='',

        services=[], start_datetime=None, end_datetime=None, room=None, note=None,

        **rrule_params):

        """

        Convenience function to create an ``Event``, optionally create an 

        ``EventType``, and associated ``Occurrence``s. ``Occurrence`` creation

        rules match those for ``Event.add_occurrences``.

        Args:

            event_type: can be either an ``EventType`` object or the label

            is either created or retrieved.

            participants: List of CalebasseUser

            start_datetime: will default to the current hour if ``None``

            end_datetime: will default to ``start_datetime`` plus

            default.DEFAULT_OCCURRENCE_DURATION hour if ``None``

            freq, count, rrule_params:

            follow the ``dateutils`` API (see http://labix.org/python-dateutil)

        Returns:

            Event object

        """

        if isinstance(event_type, str):

            event_type, created = agenda.models.EventType.objects.get_or_create(

                label=event_type

            )

        event = self.create(title=title, event_type=event_type)

        return self._set_event(event, participants, services = services,

                start_datetime = start_datetime, end_datetime = end_datetime,

                room=room, **rrule_params)

    def create_holiday(self, start_date, end_date, peoples=[], services=[], motive=''):

        event_type, created = agenda.models.EventType.objects.get_or_create(

                label=u"Vacances"

                )

        event = self.create(title="Conge", event_type=event_type)

        start_datetime = datetime(start_date.year, start_date.month, start_date.day)

        end_datetime = datetime(end_date.year, end_date.month, end_date.day, 23, 59)

        return self._set_event(event, peoples, motive, services, start_datetime, end_datetime)

class OccurrenceManager(models.Manager):

    def daily_occurrences(self, date=None, participants=None, services=None,

            event_type=None):

        '''

        Returns a queryset of for instances that have any overlap with a 

        particular day.

        Args:

            date: may be either a datetime.datetime, datetime.date object, or

            ``None``. If ``None``, default to the current day.

            participants: a list of CalebasseUser

        '''

        date = date or datetime.now()

        start = datetime(date.year, date.month, date.day)

        end = start.replace(hour=23, minute=59, second=59)

        qs = self.select_related('event').filter(

            models.Q(

                start_time__gte=start,

                start_time__lte=end,

            ) |

            models.Q(

                end_time__gte=start,

                end_time__lte=end,

            ) |

            models.Q(

                start_time__lt=start,

                end_time__gt=end,

            )

        )

        if participants:

            qs = qs.filter(event__participants__in=participants)

        if services:

            qs = qs.filter(event__services__in=services)

        if event_type:

            qs = qs.filter(event__event_type=event_type)

        return qs

    def daily_disponiblity(self, date, occurrences, participants, time_tables):

        result = dict()

        quater = 0

        occurrences_set = {}

        timetables_set = {}

        for participant in participants:

            occurrences_set[participant.id] = IntervalSet((o.to_interval() for o in occurrences[participant.id]))

            timetables_set[participant.id] = IntervalSet((t.to_interval(date) for t in time_tables[participant.id]))

        start_datetime = datetime(date.year, date.month, date.day, 8, 0)

        end_datetime = datetime(date.year, date.month, date.day, 8, 15)

        while (start_datetime.hour <= 19):

            for participant in participants:

                if not result.has_key(start_datetime.hour):

                    result[start_datetime.hour] = [0, 1, 2, 3]

                    result[start_datetime.hour][0] = []

                    result[start_datetime.hour][1] = []

                    result[start_datetime.hour][2] = []

                    result[start_datetime.hour][3] = []

                    quater = 0

                interval = IntervalSet.between(start_datetime, end_datetime, False)

                if interval.intersection(occurrences_set[participant.id]):

                    result[start_datetime.hour][quater].append({'id': participant.id, 'dispo': 'busy'})

                elif not interval.intersection(timetables_set[participant.id]):

                    result[start_datetime.hour][quater].append({'id': participant.id, 'dispo': 'away'})

                else:

                    result[start_datetime.hour][quater].append({'id': participant.id, 'dispo': 'free'})

            quater += 1

            start_datetime += timedelta(minutes=15)

            end_datetime += timedelta(minutes=15)

        return result

    def next_appoinment(self, patient_record):

        qs = self.filter(start_time__gt=datetime.now()).\

                filter(event__event_type__id=1).\

                filter(event__eventact__patient=patient_record).\

                prefetch_related('event__eventact').\

                order_by('start_time')

        if qs:

            return qs[0]

        else:

            return None

    def last_appoinment(self, patient_record):

        qs = self.filter(start_time__lt=datetime.now()).\

                filter(event__event_type__id=1).\

                filter(event__eventact__patient=patient_record).\

                prefetch_related('event__eventact').\

                order_by('-start_time')

        if qs:

            return qs[0]

        else:

            return None