Add option to automatically check out all attendees at night (#1819)

src/pretix/base/migrations/0167_checkinlist_exit_all_at.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.0.10 on 2020-10-20 06:24
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0166_auto_20201015_2029'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='checkinlist',
+            name='exit_all_at',
+            field=models.DateTimeField(blank=True, null=True),
+        ),
+    ]

src/pretix/base/models/checkin.py

@@ -30,7 +30,10 @@ class CheckinList(LoggedModel):
         help_text=_('Use this option to turn off warnings if a ticket is scanned a second time.'),
         default=False
     )
-
+    exit_all_at = models.DateTimeField(
+        verbose_name=_('Automatically check out everyone at'),
+        null=True, blank=True
+    )
     auto_checkin_sales_channels = MultiStringField(
         default=[],
         blank=True,
@@ -62,7 +65,7 @@ class CheckinList(LoggedModel):
         return qs
 
     @property
-    def inside_count(self):
+    def positions_inside(self):
         return self.positions.annotate(
             last_entry=Subquery(
                 Checkin.objects.filter(
@@ -87,7 +90,11 @@ class CheckinList(LoggedModel):
             & Q(
                 Q(last_exit__isnull=True) | Q(last_exit__lt=F('last_entry'))
             )
-        ).count()
+        )
+
+    @property
+    def inside_count(self):
+        return self.positions_inside.count()
 
     @property
     @scopes_disabled()

src/pretix/base/services/checkin.py

@@ -7,11 +7,12 @@ from django.dispatch import receiver
 from django.utils.functional import cached_property
 from django.utils.timezone import now, override
 from django.utils.translation import gettext as _
+from django_scopes import scope, scopes_disabled
 
 from pretix.base.models import (
     Checkin, CheckinList, Device, Order, OrderPosition, QuestionOption,
 )
-from pretix.base.signals import checkin_created, order_placed
+from pretix.base.signals import checkin_created, order_placed, periodic_task
 from pretix.helpers.jsonlogic import Logic
 
 
@@ -262,5 +263,23 @@ def order_placed(sender, **kwargs):
         for cl in cls:
             if cl.all_products or op.item_id in {i.pk for i in cl.limit_products.all()}:
                 if not cl.subevent_id or cl.subevent_id == op.subevent_id:
-                    ci = Checkin.objects.create(position=op, list=cl, auto_checked_in=True)
+                    ci = Checkin.objects.create(position=op, list=cl, auto_checked_in=True, type=Checkin.TYPE_ENTRY)
                     checkin_created.send(event, checkin=ci)
+
+
+@receiver(periodic_task, dispatch_uid="autocheckin_exit_all")
+@scopes_disabled()
+def process_exit_all(sender, **kwargs):
+    qs = CheckinList.objects.filter(
+        exit_all_at__lte=now(),
+        exit_all_at__isnull=False
+    ).select_related('event', 'event__organizer')
+    for cl in qs:
+        for p in cl.positions_inside:
+            with scope(organizer=cl.event.organizer):
+                ci = Checkin.objects.create(
+                    position=p, list=cl, auto_checked_in=True, type=Checkin.TYPE_EXIT, datetime=cl.exit_all_at
+                )
+                checkin_created.send(cl.event, checkin=ci)
+        cl.exit_all_at = cl.exit_all_at + timedelta(days=1)
+        cl.save(update_fields=['exit_all_at'])