add setting to supress room change messages

shiftregister/app/dynamic_preferences_registry.py

@@ -94,3 +94,11 @@ class EventEndAt(types.DatePreference):
     name = "event_end_at"
     default = datetime.date(2025, 5, 28)
     help_text = "The end date and time of the event. Date navigation will only show days between start and end time."
+
+
+@global_preferences_registry.register
+class SupressRoomChangeNotifications(types.BooleanPreference):
+    section = helper
+    name = "supress_room_change_notifications"
+    default = False
+    help_text = "If true, notifications about room changes will be suppressed."

shiftregister/app/signals.py

@@ -2,11 +2,14 @@ from django.db.models.signals import pre_save
 from django.dispatch import receiver
 from django.shortcuts import reverse
 from django.template import Context, Template
+from dynamic_preferences.registries import global_preferences_registry
 
 from shiftregister.core.signals import populate_nav
 
 from .models import Message, Shift
 
+global_preferences = global_preferences_registry.manager()
+
 
 @receiver(pre_save, dispatch_uid="notify_shift_changed")
 def notify_shift_changed(sender, **kwargs):
@@ -16,9 +19,11 @@ def notify_shift_changed(sender, **kwargs):
             prev = Shift.all_objects.get(pk=instance.id)
         except Shift.DoesNotExist:
             return
-
+        room_unchanged = (prev.room == instance.room) or global_preferences[
+            "helper__supress_room_change_notifications"
+        ]
         if (
-            prev.room == instance.room
+            room_unchanged
             and prev.start_at == instance.start_at
             and prev.duration == instance.duration
             and prev.deleted == instance.deleted

shiftregister/app/tests.py

@@ -2,8 +2,9 @@ from datetime import timedelta
 
 from django.test import TestCase
 from django.utils import timezone
+from dynamic_preferences.registries import global_preferences_registry
 
-from .models import Helper, Room, Shift, ShiftRegistration
+from .models import Helper, Message, Room, Shift, ShiftRegistration
 
 
 class ShiftOverlapTests(TestCase):
@@ -162,3 +163,79 @@ class ShiftOverlapTests(TestCase):
             required_helpers=1,
         )
         self.assertIsNone(self.helper.has_overlapping_shift(shift_same_time))
+
+
+class ShiftSignalTests(TestCase):
+    def setUp(self):
+        # Create rooms
+        self.room1 = Room.objects.create(
+            name="Test Room 1", required_helpers=1, meeting_location="Test Location 1"
+        )
+        self.room2 = Room.objects.create(
+            name="Test Room 2", required_helpers=1, meeting_location="Test Location 2"
+        )
+
+        # Create a helper
+        self.helper = Helper.objects.create(
+            phone="+491234567890", name="Test Helper", number_validated=True
+        )
+
+        # Create a shift
+        self.shift = Shift.objects.create(
+            room=self.room1,
+            start_at=timezone.now() + timedelta(hours=1),
+            duration=timedelta(hours=2),
+            required_helpers=1,
+        )
+
+        # Register the helper for the shift
+        self.registration = ShiftRegistration.objects.create(
+            shift=self.shift,
+            helper=self.helper,
+            state=ShiftRegistration.RegState.REGISTERED,
+        )
+
+        # Get global preferences manager
+        self.global_preferences = global_preferences_registry.manager()
+
+    def test_room_change_notification_default(self):
+        """Test that room changes create notifications by default"""
+        # Ensure the preference is False (default)
+        self.global_preferences["helper__supress_room_change_notifications"] = False
+
+        # Change the room
+        self.shift.room = self.room2
+        self.shift.save()
+
+        # Check that a notification was created
+        self.assertEqual(Message.objects.count(), 1)
+        message = Message.objects.first()
+        self.assertEqual(message.to, self.helper)
+        self.assertTrue("geändert" in message.text)
+
+    def test_room_change_notification_suppressed(self):
+        """Test that room changes don't create notifications when suppressed"""
+        # Enable notification suppression
+        self.global_preferences["helper__supress_room_change_notifications"] = True
+
+        # Change the room
+        self.shift.room = self.room2
+        self.shift.save()
+
+        # Check that no notification was created
+        self.assertEqual(Message.objects.count(), 0)
+
+    def test_other_changes_still_notify_when_suppressed(self):
+        """Test that other changes still create notifications when room notifications are suppressed"""
+        # Enable notification suppression
+        self.global_preferences["helper__supress_room_change_notifications"] = True
+
+        # Change something other than the room
+        self.shift.start_at = timezone.now() + timedelta(hours=2)
+        self.shift.save()
+
+        # Check that a notification was created
+        self.assertEqual(Message.objects.count(), 1)
+        message = Message.objects.first()
+        self.assertEqual(message.to, self.helper)
+        self.assertTrue("geändert" in message.text)