remove add_stack_slug_to_message_title utility from push notification titles (#5258)

# What this PR does

We noticed that the backend was adding the stack name to the
notification title only on Android.
We thought it makes sense to add the stack name only if the user has
more than 1 stack connected, but that's not doable right now since the
backend doesn't know how many stacks are connected in the app.
Also we took a look at the analytics for the app and basically 95% of
the users have only 1 stack connected.

This pr removes the stack name from the notifications title.
If in the future we think it makes sense to add it conditionally based
on the number of stacks we can open another pr, but given the very
little amount of users with more than 1 stack I think this is not
needed.

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [x] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

engine/apps/mobile_app/demo_push.py

@@ -8,7 +8,7 @@ from firebase_admin.messaging import APNSPayload, Aps, ApsAlert, CriticalSound,
 
 from apps.mobile_app.exceptions import DeviceNotSet
 from apps.mobile_app.types import FCMMessageData, MessageType, Platform
-from apps.mobile_app.utils import add_stack_slug_to_message_title, construct_fcm_message, send_push_notification
+from apps.mobile_app.utils import construct_fcm_message, send_push_notification
 from apps.user_management.models import User
 
 if typing.TYPE_CHECKING:
@@ -47,7 +47,7 @@ def _get_test_escalation_fcm_message(user: User, device_to_notify: "FCMDevice",
     apns_sound_name = mobile_app_user_settings.get_notification_sound_name(message_type, Platform.IOS)
 
     fcm_message_data: FCMMessageData = {
-        "title": add_stack_slug_to_message_title(get_test_push_title(critical), user.organization),
+        "title": get_test_push_title(critical),
         "orgName": user.organization.stack_slug,
         # Pass user settings, so the Android app can use them to play the correct sound and volume
         "default_notification_sound_name": mobile_app_user_settings.get_notification_sound_name(

engine/apps/mobile_app/tasks/going_oncall_notification.py

@@ -12,12 +12,7 @@ from django.utils import timezone
 from firebase_admin.messaging import APNSPayload, Aps, ApsAlert, CriticalSound, Message
 
 from apps.mobile_app.types import FCMMessageData, MessageType, Platform
-from apps.mobile_app.utils import (
-    MAX_RETRIES,
-    add_stack_slug_to_message_title,
-    construct_fcm_message,
-    send_push_notification,
-)
+from apps.mobile_app.utils import MAX_RETRIES, construct_fcm_message, send_push_notification
 from apps.schedules.models.on_call_schedule import OnCallSchedule, ScheduleEvent
 from apps.user_management.models import User
 from common.cache import ensure_cache_key_allocates_to_the_same_hash_slot
@@ -82,7 +77,7 @@ def _get_fcm_message(
     notification_subtitle = _get_notification_subtitle(schedule, schedule_event, mobile_app_user_settings)
 
     data: FCMMessageData = {
-        "title": add_stack_slug_to_message_title(notification_title, user.organization),
+        "title": notification_title,
         "subtitle": notification_subtitle,
         "orgName": user.organization.stack_slug,
         "info_notification_sound_name": mobile_app_user_settings.get_notification_sound_name(

engine/apps/mobile_app/tasks/new_alert_group.py

@@ -8,12 +8,7 @@ from firebase_admin.messaging import APNSPayload, Aps, ApsAlert, CriticalSound,
 from apps.alerts.models import AlertGroup
 from apps.mobile_app.alert_rendering import get_push_notification_subtitle, get_push_notification_title
 from apps.mobile_app.types import FCMMessageData, MessageType, Platform
-from apps.mobile_app.utils import (
-    MAX_RETRIES,
-    add_stack_slug_to_message_title,
-    construct_fcm_message,
-    send_push_notification,
-)
+from apps.mobile_app.utils import MAX_RETRIES, construct_fcm_message, send_push_notification
 from apps.user_management.models import User
 from common.custom_celery_tasks import shared_dedicated_queue_retry_task
 
@@ -46,7 +41,7 @@ def _get_fcm_message(alert_group: AlertGroup, user: User, device_to_notify: "FCM
     apns_sound_name = mobile_app_user_settings.get_notification_sound_name(message_type, Platform.IOS)
 
     fcm_message_data: FCMMessageData = {
-        "title": add_stack_slug_to_message_title(alert_title, alert_group.channel.organization),
+        "title": alert_title,
         "subtitle": alert_subtitle,
         "orgId": alert_group.channel.organization.public_primary_key,
         "orgName": alert_group.channel.organization.stack_slug,

engine/apps/mobile_app/tasks/new_shift_swap_request.py

@@ -10,12 +10,7 @@ from django.utils import timezone
 from firebase_admin.messaging import APNSPayload, Aps, ApsAlert, CriticalSound, Message
 
 from apps.mobile_app.types import FCMMessageData, MessageType, Platform
-from apps.mobile_app.utils import (
-    MAX_RETRIES,
-    add_stack_slug_to_message_title,
-    construct_fcm_message,
-    send_push_notification,
-)
+from apps.mobile_app.utils import MAX_RETRIES, construct_fcm_message, send_push_notification
 from apps.schedules.models import ShiftSwapRequest
 from apps.user_management.models import User
 from common.custom_celery_tasks import shared_dedicated_queue_retry_task
@@ -121,7 +116,7 @@ def _get_fcm_message(
     route = f"/schedules/{shift_swap_request.schedule.public_primary_key}/ssrs/{shift_swap_request.public_primary_key}"
 
     data: FCMMessageData = {
-        "title": add_stack_slug_to_message_title(notification_title, user.organization),
+        "title": notification_title,
         "subtitle": notification_subtitle,
         "orgName": user.organization.stack_slug,
         "route": route,

engine/apps/mobile_app/tests/tasks/test_going_oncall_notification.py

@@ -18,7 +18,6 @@ from apps.mobile_app.tasks.going_oncall_notification import (
     conditionally_send_going_oncall_push_notifications_for_schedule,
 )
 from apps.mobile_app.types import MessageType, Platform
-from apps.mobile_app.utils import add_stack_slug_to_message_title
 from apps.schedules.models import OnCallScheduleCalendar, OnCallScheduleICal, OnCallScheduleWeb
 from apps.schedules.models.on_call_schedule import ScheduleEvent
 
@@ -228,7 +227,7 @@ def test_get_fcm_message(
     maus = MobileAppUserSettings.objects.create(user=user, time_zone=user_tz)
 
     data = {
-        "title": add_stack_slug_to_message_title(mock_notification_title, organization),
+        "title": mock_notification_title,
         "subtitle": mock_notification_subtitle,
         "orgName": organization.stack_slug,
         "info_notification_sound_name": maus.get_notification_sound_name(MessageType.INFO, Platform.ANDROID),

engine/apps/mobile_app/tests/tasks/test_new_shift_swap_request.py

@@ -19,7 +19,6 @@ from apps.mobile_app.tasks.new_shift_swap_request import (
     notify_shift_swap_requests,
     notify_user_about_shift_swap_request,
 )
-from apps.mobile_app.utils import add_stack_slug_to_message_title
 from apps.schedules.models import CustomOnCallShift, OnCallScheduleWeb, ShiftSwapRequest
 from apps.user_management.models import User
 from apps.user_management.models.user import default_working_hours
@@ -288,7 +287,7 @@ def test_notify_user_about_shift_swap_request(
 
     message: Message = mock_send_push_notification.call_args.args[1]
     assert message.data["type"] == "oncall.info"
-    assert message.data["title"] == add_stack_slug_to_message_title("New shift swap request", organization)
+    assert message.data["title"] == "New shift swap request"
     assert message.data["subtitle"] == "John Doe, Test Schedule"
     assert (
         message.data["route"]
@@ -487,9 +486,7 @@ def test_notify_beneficiary_about_taken_shift_swap_request(
 
     message: Message = mock_send_push_notification.call_args.args[1]
     assert message.data["type"] == "oncall.info"
-    assert message.data["title"] == add_stack_slug_to_message_title(
-        "Your shift swap request has been taken", organization
-    )
+    assert message.data["title"] == "Your shift swap request has been taken"
     assert message.data["subtitle"] == schedule_name
     assert (
         message.data["route"]

engine/apps/mobile_app/tests/test_demo_push.py

@@ -2,7 +2,6 @@ import pytest
 
 from apps.mobile_app.demo_push import _get_test_escalation_fcm_message, get_test_push_title
 from apps.mobile_app.models import FCMDevice, MobileAppUserSettings
-from apps.mobile_app.utils import add_stack_slug_to_message_title
 
 
 @pytest.mark.django_db
@@ -34,7 +33,7 @@ def test_test_escalation_fcm_message_user_settings(
     # Check expected test push content
     assert message.apns.payload.aps.badge is None
     assert message.apns.payload.aps.alert.title == get_test_push_title(critical=False)
-    assert message.data["title"] == add_stack_slug_to_message_title(get_test_push_title(critical=False), organization)
+    assert message.data["title"] == get_test_push_title(critical=False)
     assert message.data["type"] == "oncall.message"
 
 
@@ -68,7 +67,7 @@ def test_escalation_fcm_message_user_settings_critical(
     # Check expected test push content
     assert message.apns.payload.aps.badge is None
     assert message.apns.payload.aps.alert.title == get_test_push_title(critical=True)
-    assert message.data["title"] == add_stack_slug_to_message_title(get_test_push_title(critical=True), organization)
+    assert message.data["title"] == get_test_push_title(critical=True)
     assert message.data["type"] == "oncall.critical_message"
 
 
@@ -94,4 +93,4 @@ def test_escalation_fcm_message_user_settings_critical_override_dnd_disabled(
     # Check expected test push content
     assert message.apns.payload.aps.badge is None
     assert message.apns.payload.aps.alert.title == get_test_push_title(critical=True)
-    assert message.data["title"] == add_stack_slug_to_message_title(get_test_push_title(critical=True), organization)
+    assert message.data["title"] == get_test_push_title(critical=True)