add time machine form to live.html

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

@@ -124,6 +124,28 @@
             <div class="clear"></div>
         </div>
     </div>
+    <div class="panel {% if request.session.timemachine_now_dt %}panel-success{% else %}panel-default{% endif %}">
+        <div class="panel-heading">
+            {% trans "Time machine" %}
+        </div>
+        <div class="panel-body">
+            <form action="" method="post" class="">
+                {% csrf_token %}
+                {% bootstrap_form_errors timemachine_form %}
+
+                <p>{% trans "Test your shop as if it were a different date and time." %}</p>
+
+                {% bootstrap_field timemachine_form.now_dt layout="control" show_label=False field_class="col-md-6" %}
+                <div class="text-right">
+                    <button type="submit" class="btn btn-default btn-lg btn-save">
+                        {% trans "Enable time machine" %}
+                    </button>
+                </div>
+            </form>
+
+            <div class="clear"></div>
+        </div>
+    </div>
     <div class="text-right">
         <a href="{% url "control:event.dangerzone" organizer=request.organizer.slug event=request.event.slug %}"
                 class="btn btn-default btn-lg">

src/pretix/control/views/event.py

@@ -46,6 +46,8 @@ from zoneinfo import ZoneInfo
 import bleach
 import qrcode
 import qrcode.image.svg
+from dateutil import parser
+from django import forms
 from django.apps import apps
 from django.conf import settings
 from django.contrib import messages
@@ -63,7 +65,7 @@ from django.shortcuts import get_object_or_404, redirect
 from django.urls import reverse
 from django.utils.functional import cached_property
 from django.utils.http import url_has_allowed_host_and_scheme
-from django.utils.timezone import now
+from django.utils.timezone import now, get_current_timezone
 from django.utils.translation import gettext, gettext_lazy as _, gettext_noop
 from django.views.generic import FormView, ListView
 from django.views.generic.base import TemplateView, View
@@ -91,9 +93,10 @@ from pretix.control.permissions import EventPermissionRequiredMixin
 from pretix.control.views.mailsetup import MailSettingsSetupView
 from pretix.control.views.user import RecentAuthenticationRequiredMixin
 from pretix.helpers.database import rolledback_transaction
-from pretix.multidomain.urlreverse import build_absolute_uri, get_event_domain
+from pretix.multidomain.urlreverse import build_absolute_uri, get_event_domain, eventreverse
 from pretix.plugins.stripe.payment import StripeSettingsHolder
 from pretix.presale.style import regenerate_css
+from ...base.forms.widgets import SplitDateTimePickerWidget
 
 from ...base.i18n import language
 from ...base.models.items import (
@@ -950,18 +953,40 @@ class EventPermissions(EventSettingsViewMixin, EventPermissionRequiredMixin, Tem
     template_name = 'pretixcontrol/event/permissions.html'
 
 
+class TimemachineForm(forms.Form):
+    now_dt = forms.SplitDateTimeField(
+        label=_('Fake date time'),
+        widget=SplitDateTimePickerWidget(),
+        initial=lambda: now().astimezone(get_current_timezone())
+    )
+
+
 class EventLive(EventPermissionRequiredMixin, TemplateView):
     permission = 'can_change_event_settings'
     template_name = 'pretixcontrol/event/live.html'
 
+    def setup(self, request, *args, **kwargs):
+        super().setup(request, *args, **kwargs)
+        self.timemachine_form = TimemachineForm(
+            data=request.method == 'POST' and request.POST or None,
+            initial={'now_dt':parser.parse(request.session.get('timemachine_now_dt', None))} if request.session.get('timemachine_now_dt', None) else {}
+        )
+
     def get_context_data(self, **kwargs):
         ctx = super().get_context_data(**kwargs)
         ctx['issues'] = self.request.event.live_issues
         ctx['actual_orders'] = self.request.event.orders.filter(testmode=False).exists()
+        ctx['timemachine_form'] = self.timemachine_form
         return ctx
 
     def post(self, request, *args, **kwargs):
-        if request.POST.get("live") == "true" and not self.request.event.live_issues:
+        if self.timemachine_form.is_valid():
+            request.session['timemachine_now_dt'] = str(self.timemachine_form.cleaned_data['now_dt'])
+            return redirect(eventreverse(request.event, "presale:event.index"))
+        elif request.POST.get("timemachine_disable"):
+            request.session['timemachine_now_dt'] = None
+            messages.success(self.request, _('Time machine disabled!'))
+        elif request.POST.get("live") == "true" and not self.request.event.live_issues:
             with transaction.atomic():
                 request.event.live = True
                 request.event.save()

src/pretix/presale/templates/pretixpresale/event/base.html

@@ -36,11 +36,15 @@
     {% if request.now_dt_is_fake %}
         <div class="offline-banner">
             <div class="container">
-                <span class="fa fa-user-secret" aria-hidden="true"></span>
+                <span class="fa fa-clock-o" aria-hidden="true"></span>
                 {% trans "You are currently using the time machine. The ticket shop is rendered as if it were" %} {{ request.now_dt }}
-                <a href="#">
-                    {% trans "Go back to current time" %}
+                <a href="{{ site_url }}{% url "control:event.live" event=event.slug organizer=event.organizer.slug %}">
+                    {% trans "Change" %}
                 </a>
+                <form action="{{ site_url }}{% url "control:event.live" event=event.slug organizer=event.organizer.slug %}" method="post" class="download-btn-form">
+                    {% csrf_token %}
+                    <input type="submit" class="btn btn-link" value="{% trans "Go back to current time" %}" name="timemachine_disable">
+                </form>
             </div>
         </div>
     {% endif %}

src/pretix/presale/timemachine.py

@@ -46,16 +46,16 @@ class TimeMachineMiddleware:
 
     def __call__(self, request):
         if hasattr(request, 'event') and hasattr(request, '_namespace') and request._namespace == 'presale' and \
-                'time_machine' in request.COOKIES and \
+                'timemachine_now_dt' in request.session and \
                 request.user.has_event_permission(request.organizer, request.event, 'can_change_event_settings', request):
             print("setting now_dt from cookie")
-            request.now_dt = parse(request.COOKIES['time_machine'])
+            request.now_dt = parse(request.session['timemachine_now_dt'])
             request.now_dt_is_fake = True
         else:
             print("setting now_dt to now",
                   "hasevent?",hasattr(request, 'event') ,
                   "namespace?",hasattr(request, '_namespace') and request._namespace,
-                  "cookies?",request.COOKIES)
+                  "cookies?",request.session)
             request.now_dt = now()
             request.now_dt_is_fake = False