Added a plugin for the coming pretixdroid application

src/pretix/plugins/pretixdroid/views.py

@@ -0,0 +1,68 @@
+import json
+import logging
+import random
+import string
+
+from django.http import (
+    HttpResponseForbidden, HttpResponseNotFound, JsonResponse,
+)
+from django.views.generic import TemplateView, View
+
+from pretix.base.models import Event, Order, OrderPosition
+from pretix.control.permissions import EventPermissionRequiredMixin
+from pretix.helpers.urls import build_absolute_uri
+
+logger = logging.getLogger('pretix.plugins.pretixdroid')
+
+
+class ConfigView(EventPermissionRequiredMixin, TemplateView):
+    template_name = 'pretixplugins/pretixdroid/configuration.html'
+    permission = 'can_change_orders'
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data()
+        key = self.request.event.settings.get('pretixdroid_key')
+        if not key or 'flush_key' in self.request.GET:
+            key = ''.join(
+                random.SystemRandom().choice(string.ascii_uppercase + string.ascii_lowercase + string.digits) for _ in
+                range(32))
+            self.request.event.settings.set('pretixdroid_key', key)
+
+        ctx['qrdata'] = json.dumps({
+            'version': 1,
+            'url': build_absolute_uri('plugins:pretixdroid:api', kwargs={
+                'organizer': self.request.event.organizer.slug,
+                'event': self.request.event.slug
+            }),
+            'key': key
+        })
+        return ctx
+
+
+class ApiView(View):
+    def get(self, request, **kwargs):
+        try:
+            event = Event.objects.current.get(
+                slug=self.kwargs['event'],
+                organizer__slug=self.kwargs['organizer']
+            )
+        except Event.DoesNotExist:
+            return HttpResponseNotFound('Unknown event')
+
+        if (not event.settings.get('pretixdroid_key')
+                or event.settings.get('pretixdroid_key') != request.GET.get('key', '')):
+            return HttpResponseForbidden('Invalid key')
+
+        ops = OrderPosition.objects.current.filter(
+            order__event=event, order__status=Order.STATUS_PAID,
+        ).select_related('item', 'variation')
+        data = [
+            {
+                'id': op.identity,
+                'item': str(op.item),
+                'variation': str(op.variation) if op.variation else None,
+                'attendee_name': op.attendee_name
+            }
+            for op in ops
+        ]
+        return JsonResponse({'data': data, 'version': 1})