src/team/models.py

   1 from datetime import timedelta
   2 from django.conf import settings
   3 from django.db import models
   4 from django.utils.timezone import now
   5
   6
   7 class Profile(models.Model):
   8     user = models.OneToOneField(settings.AUTH_USER_MODEL, models.CASCADE)
   9     presence = models.BooleanField()
  10     approve_by_default = models.BooleanField()
  11
  12     class Meta:
  13         verbose_name = verbose_name_plural = 'profil'
  14
  15     def __str__(self):
  16         return self.user.username
  17
  18
  19 class Presence(models.Model):
  20     GAP_THRESHOLD = 10
  21
  22     user = models.ForeignKey(settings.AUTH_USER_MODEL, models.CASCADE, null=True, blank=True)
  23     session_key = models.CharField(max_length=255)
  24     chunk = models.ForeignKey('documents.Chunk', models.SET_NULL, blank=True, null=True)
  25     since = models.DateTimeField(auto_now_add=True, db_index=True)
  26     until = models.DateTimeField(db_index=True)
  27     active = models.BooleanField()
  28
  29     @classmethod
  30     def report(cls, user, session_key, chunk, active):
  31         user = user if not user.is_anonymous else None
  32         report = cls.objects.filter(
  33             user=user,
  34             session_key=session_key,
  35             chunk=chunk,
  36             until__gt=now() - timedelta(seconds=cls.GAP_THRESHOLD)
  37         ).order_by('-until').first()
  38         if report is None or report.active != active:
  39             report = cls.objects.create(
  40                 user=user,
  41                 session_key=session_key,
  42                 chunk=chunk,
  43                 active=active,
  44                 until=now(),
  45             )
  46         else:
  47             report.until = now()
  48             report.save()
  49
  50     @classmethod
  51     def get_current(cls, session_key, chunk):
  52         sessions = set()
  53         presences = []
  54         for p in cls.objects.filter(
  55             chunk=chunk,
  56             until__gt=now() - timedelta(seconds=cls.GAP_THRESHOLD)
  57         ).exclude(session_key=session_key).order_by('-since'):
  58             if p.session_key not in sessions:
  59                 sessions.add(p.session_key)
  60                 presences.append(p)
  61         presences.reverse()
  62         return presences