Auto-check-in for specific sales channels (#1409)

* Autocheckin data model/cosmetics

* Expose automatically checked-in OrderPositions

* Expose automatically checked-in OrderPositions in CSV/PDF Exports

* Fix some tests, try to fix MultiStringField/CheckboxSelectMultiple

* Actually fix MultiStringField/CheckboxSelectMultiple.
(Not pretty, but it works)

* Fix more tests

* Squash migration

* Also fix CSV/nameparts-test

* Changes for Autocheckin code-review

* Perform Auto-Checkins through new core plugin

* Update config-doc to reflect also checkinlists

* Explicitly output AutoCheckin Yes/No for CSV-Export (+ fix test)

* Move autocheckin from plugin to service

* API-doc

* Fix API-doc spelling

* Checkinlist-API and autocheckin order tests

* Performance improvement when reading checkinlists for autocheckin

Co-Authored-By: Raphael Michel <michel@rami.io>

* Autocheckin test for order created through API

* Resolve migration conflict

src/pretix/base/__init__.py

@@ -13,7 +13,7 @@ class PretixBaseConfig(AppConfig):
         from . import invoice  # NOQA
         from . import notifications  # NOQA
         from . import email  # NOQA
-        from .services import auth, export, mail, tickets, cart, orders, invoices, cleanup, update_check, quotas, notifications  # NOQA
+        from .services import auth, checkin, export, mail, tickets, cart, orders, invoices, cleanup, update_check, quotas, notifications  # NOQA
 
         try:
             from .celery_app import app as celery_app  # NOQA

src/pretix/base/migrations/0136_auto_20190918_1742.py

@@ -0,0 +1,25 @@
+# Generated by Django 2.2 on 2019-09-18 17:42
+
+from django.db import migrations, models
+
+import pretix.base.models.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('pretixbase', '0135_auto_20191007_0803'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='checkin',
+            name='auto_checked_in',
+            field=models.BooleanField(default=False),
+        ),
+        migrations.AddField(
+            model_name='checkinlist',
+            name='auto_checkin_sales_channels',
+            field=pretix.base.models.fields.MultiStringField(default=[]),
+        )
+    ]

src/pretix/base/models/checkin.py

@@ -5,6 +5,7 @@ from django.utils.translation import pgettext_lazy, ugettext_lazy as _
 from django_scopes import ScopedManager
 
 from pretix.base.models import LoggedModel
+from pretix.base.models.fields import MultiStringField
 
 
 class CheckinList(LoggedModel):
@@ -20,6 +21,15 @@ class CheckinList(LoggedModel):
                                                       'order have not been paid. This only works with pretixdesk '
                                                       '0.3.0 or newer or pretixdroid 1.9 or newer.'))
 
+    auto_checkin_sales_channels = MultiStringField(
+        default=[],
+        blank=True,
+        verbose_name=_('Sales channels to automatically check in'),
+        help_text=_('All items on this check-in list will be automatically marked as checked-in when purchased through '
+                    'any of the selected sales channels. This option can be useful when tickets sold at the box office '
+                    'are not checked again before entry and should be considered validated directly upon purchase.')
+    )
+
     objects = ScopedManager(organizer='event__organizer')
 
     class Meta:
@@ -87,6 +97,7 @@ class Checkin(models.Model):
     list = models.ForeignKey(
         'pretixbase.CheckinList', related_name='checkins', on_delete=models.PROTECT,
     )
+    auto_checked_in = models.BooleanField(default=False)
 
     objects = ScopedManager(organizer='position__order__event__organizer')
 

src/pretix/base/services/checkin.py

@@ -1,11 +1,13 @@
 from django.db import transaction
 from django.db.models import Prefetch
+from django.dispatch import receiver
 from django.utils.timezone import now
 from django.utils.translation import ugettext as _
 
 from pretix.base.models import (
     Checkin, CheckinList, Order, OrderPosition, Question, QuestionOption,
 )
+from pretix.base.signals import order_placed
 
 
 class CheckInError(Exception):
@@ -155,3 +157,18 @@ def perform_checkin(op: OrderPosition, clist: CheckinList, given_answers: dict,
             'datetime': dt,
             'list': clist.pk
         }, user=user, auth=auth)
+
+
+@receiver(order_placed, dispatch_uid="autocheckin_order_placed")
+def order_placed(sender, **kwargs):
+    order = kwargs['order']
+    event = sender
+
+    cls = list(event.checkin_lists.filter(auto_checkin_sales_channels__contains=order.sales_channel).prefetch_related(
+        'limit_products'))
+    if not cls:
+        return
+    for op in order.positions.all():
+        for cl in cls:
+            if cl.all_products or op.item_id in {i.pk for i in cl.limit_products.all()}:
+                Checkin.objects.create(position=op, list=cl, auto_checked_in=True)