Fixes to the download reminder

src/pretix/base/services/orders.py

@@ -530,27 +530,21 @@ def send_expiry_warnings(sender, **kwargs):
 
 @receiver(signal=periodic_task)
 def send_download_reminders(sender, **kwargs):
-    eventcache = {}
-    today = now().replace(hour=0, minute=0, second=0)
+    today = now().replace(hour=0, minute=0, second=0, microsecond=0)
 
     for e in Event.objects.filter(date_from__gte=today):
-        eventsettings = eventcache.get(e.pk, None)
-        if eventsettings is None:
-            eventsettings = e.settings
-            eventcache[e.pk] = eventsettings
-
-        days = eventsettings.get('mail_days_download_reminder', as_type=int)
-        if days is not None:
+        days = e.settings.get('mail_days_download_reminder', as_type=int)
+        if days is None:
             continue
 
-        reminder_date = (e.date_from - timedelta(days=days)).replace(hour=0, minute=0, second=0)
+        reminder_date = (e.date_from - timedelta(days=days)).replace(hour=0, minute=0, second=0, microsecond=0)
 
-        if (today > reminder_date):
+        if now() < reminder_date:
             continue
-        for o in e.orders.filter(status="paid", download_reminder_sent=False):
+        for o in e.orders.filter(status=Order.STATUS_PAID, download_reminder_sent=False):
             o.download_reminder_sent = True
             o.save()
-            email_template = eventsettings.mail_text_download_reminder
+            email_template = e.settings.mail_text_download_reminder
             email_context = {
                 'event': o.event.name,
                 'url': build_absolute_uri(o.event, 'presale:event.order', kwargs={

src/pretix/base/settings.py

@@ -373,7 +373,8 @@ Your {event} team"""))
 
 you bought a ticket for {event}.
 
-This is to remind you that your ticket is ready for downloading!
+If you did not do so already, you can download your ticket here:
+{url}
 
 Best regards,
 Your {event} team"""))

src/pretix/control/forms/event.py

@@ -638,6 +638,13 @@ class MailSettingsForm(SettingsForm):
         help_text=_("Available placeholders: {event}, {url}"),
         validators=[PlaceholderValidator(['{event}', '{url}'])]
     )
+    mail_days_download_reminder = forms.IntegerField(
+        label=_("Number of days"),
+        required=False,
+        min_value=0,
+        help_text=_("This email will be sent out this many days before the order event starts. If the "
+                    "field is empty, the mail will never be sent.")
+    )
     smtp_use_custom = forms.BooleanField(
         label=_("Use custom SMTP server"),
         help_text=_("All mail related to your event will be sent over the smtp server specified by you."),

src/pretix/control/templates/pretixcontrol/event/mail.html

@@ -43,7 +43,7 @@
                 {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="custom_mail" title=title_order_custom_mail items="mail_text_order_custom_mail" %}
 
                 {% blocktrans asvar title_download_tickets_reminder %}Reminder to download tickets{% endblocktrans %}
-                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="ticket_reminder" title=title_download_tickets_reminder items="mail_text_download_reminder" %}
+                {% include "pretixcontrol/event/mail_settings_fragment.html" with pid="ticket_reminder" title=title_download_tickets_reminder items="mail_days_download_reminder,mail_text_download_reminder" exclude="mail_days_download_reminder" %}
             </div>
         </fieldset>
         <fieldset>

src/tests/base/test_orders.py

@@ -3,6 +3,7 @@ from decimal import Decimal
 
 import pytest
 import pytz
+from django.core import mail as djmail
 from django.test import TestCase
 from django.utils.timezone import make_aware, now
 
@@ -16,6 +17,7 @@ from pretix.base.reldate import RelativeDate, RelativeDateWrapper
 from pretix.base.services.invoices import generate_invoice
 from pretix.base.services.orders import (
     OrderChangeManager, OrderError, _create_order, expire_orders,
+    send_download_reminders,
 )
 
 
@@ -178,6 +180,55 @@ def test_expiring_auto_disabled(event):
     assert o2.status == Order.STATUS_PENDING
 
 
+class DownloadReminderTests(TestCase):
+    def setUp(self):
+        super().setUp()
+        o = Organizer.objects.create(name='Dummy', slug='dummy')
+        self.event = Event.objects.create(
+            organizer=o, name='Dummy', slug='dummy',
+            date_from=now() + timedelta(days=2),
+            plugins='pretix.plugins.banktransfer'
+        )
+        self.order = Order.objects.create(
+            code='FOO', event=self.event, email='dummy@dummy.test',
+            status=Order.STATUS_PAID, locale='en',
+            datetime=now(),
+            expires=now() + timedelta(days=10),
+            total=Decimal('46.00'), payment_provider='banktransfer'
+        )
+        self.ticket = Item.objects.create(event=self.event, name='Early-bird ticket', tax_rate=Decimal('7.00'),
+                                          default_price=Decimal('23.00'), admission=True)
+        self.op1 = OrderPosition.objects.create(
+            order=self.order, item=self.ticket, variation=None,
+            price=Decimal("23.00"), attendee_name="Peter", positionid=1
+        )
+        djmail.outbox = []
+
+    def test_disabled(self):
+        send_download_reminders(sender=self.event)
+        assert len(djmail.outbox) == 0
+
+    def test_sent_once(self):
+        self.event.settings.mail_days_download_reminder = 2
+        send_download_reminders(sender=self.event)
+        assert len(djmail.outbox) == 1
+        assert djmail.outbox[0].to == ['dummy@dummy.test']
+        send_download_reminders(sender=self.event)
+        assert len(djmail.outbox) == 1
+
+    def test_sent_paid_only(self):
+        self.event.settings.mail_days_download_reminder = 2
+        self.order.status = Order.STATUS_PENDING
+        self.order.save()
+        send_download_reminders(sender=self.event)
+        assert len(djmail.outbox) == 0
+
+    def test_not_sent_too_early(self):
+        self.event.settings.mail_days_download_reminder = 1
+        send_download_reminders(sender=self.event)
+        assert len(djmail.outbox) == 0
+
+
 class OrderChangeManagerTests(TestCase):
     def setUp(self):
         super().setUp()