fix duplicate teams showing up in teams dropdown for /escalate slack command (#3590)

# Which issue(s) this PR fixes
- Closes https://github.com/grafana/support-escalations/issues/8763
- Closes https://github.com/grafana/oncall/issues/3388

## Checklist

- [x] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [x] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)

CHANGELOG.md

@@ -22,6 +22,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix alert group table columns validation @Ferril ([#3577](https://github.com/grafana/oncall/pull/3577))
 - Fix posting message about rate limit to Slack @Ferril ([#3582](https://github.com/grafana/oncall/pull/3582))
 - Fix issue with parsing sender email address from email message for inbound email integration endpoint @Ferril ([#3586](https://github.com/grafana/oncall/pull/3586))
+- Fix PUT /api/v1/escalation_policies/id issue when updating `from_time` and `to_time` by @joeyorlando ([#3581](https://github.com/grafana/oncall/pull/3581))
+- Fix issue where duplicate team options would show up in the teams dropdown for the `/escalate` Slack command
+  by @joeyorlando ([#3590](https://github.com/grafana/oncall/pull/3590))
 
 ## v1.3.80 (2023-12-14)
 
@@ -35,10 +38,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Add backend for multi-stack support for mobile-app @Ferril ([#3500](https://github.com/grafana/oncall/pull/3500))
 
-### Fixed
-
-- Fix PUT /api/v1/escalation_policies/id issue when updating `from_time` and `to_time` by @joeyorlando ([#3581](https://github.com/grafana/oncall/pull/3581))
-
 ## v1.3.78 (2023-12-12)
 
 ### Changed

engine/apps/slack/tests/test_scenario_steps/test_paging.py

@@ -284,6 +284,9 @@ def test_get_team_select_blocks(
 
     input_id_prefix = "nmxcnvmnxv"
 
+    def _contstruct_team_option(team):
+        return {"text": {"emoji": True, "text": team.name, "type": "plain_text"}, "value": str(team.pk)}
+
     # no team selected - no team direct paging integrations available
     organization, _, _, slack_user_identity = make_organization_and_user_with_slack_identities()
     blocks = _get_team_select_blocks(slack_user_identity, organization, False, None, input_id_prefix)
@@ -309,11 +312,9 @@ def test_get_team_select_blocks(
     assert len(blocks) == 2
     input_block, context_block = blocks
 
-    team_option = {"text": {"emoji": True, "text": team.name, "type": "plain_text"}, "value": str(team.pk)}
-
     assert input_block["type"] == "input"
     assert len(input_block["element"]["options"]) == 1
-    assert input_block["element"]["options"] == [team_option]
+    assert input_block["element"]["options"] == [_contstruct_team_option(team)]
     assert context_block["elements"][0]["text"] == info_msg
 
     # team selected
@@ -337,9 +338,6 @@ def test_get_team_select_blocks(
     assert len(blocks) == 2
     input_block, context_block = blocks
 
-    def _contstruct_team_option(team):
-        return {"text": {"emoji": True, "text": team.name, "type": "plain_text"}, "value": str(team.pk)}
-
     team1_option = _contstruct_team_option(team1)
     team2_option = _contstruct_team_option(team2)
 
@@ -355,3 +353,23 @@ def test_get_team_select_blocks(
         context_block["elements"][0]["text"]
         == f"Integration <{team2_direct_paging_arc.web_link}|{team2_direct_paging_arc.verbal_name}> will be used for notification."
     )
+
+    # team's direct paging integration has two routes associated with it
+    # the team should only be displayed once
+    organization, _, _, slack_user_identity = make_organization_and_user_with_slack_identities()
+    team = make_team(organization)
+
+    arc = make_alert_receive_channel(organization, team=team, integration=AlertReceiveChannel.INTEGRATION_DIRECT_PAGING)
+    escalation_chain = make_escalation_chain(organization)
+    make_channel_filter(arc, is_default=True, escalation_chain=escalation_chain)
+    make_channel_filter(arc, escalation_chain=escalation_chain)
+
+    blocks = _get_team_select_blocks(slack_user_identity, organization, False, None, input_id_prefix)
+
+    assert len(blocks) == 2
+    input_block, context_block = blocks
+
+    assert input_block["type"] == "input"
+    assert len(input_block["element"]["options"]) == 1
+    assert input_block["element"]["options"] == [_contstruct_team_option(team)]
+    assert context_block["elements"][0]["text"] == info_msg

engine/apps/user_management/models/organization.py

@@ -323,16 +323,20 @@ class Organization(MaintainableObject):
         """
         from apps.alerts.models import AlertReceiveChannel
 
-        return self.alert_receive_channels.annotate(
-            num_channel_filters=Count("channel_filters"),
-            # used to determine if the organization has telegram configured
-            num_org_telegram_channels=Count("organization__telegram_channel"),
-        ).filter(
-            Q(num_channel_filters__gt=1)
-            | (Q(organization__slack_team_identity__isnull=False) | Q(num_org_telegram_channels__gt=0))
-            | Q(channel_filters__is_default=True, channel_filters__escalation_chain__isnull=False)
-            | Q(channel_filters__is_default=True, channel_filters__notification_backends__isnull=False),
-            integration=AlertReceiveChannel.INTEGRATION_DIRECT_PAGING,
+        return (
+            self.alert_receive_channels.annotate(
+                num_channel_filters=Count("channel_filters"),
+                # used to determine if the organization has telegram configured
+                num_org_telegram_channels=Count("organization__telegram_channel"),
+            )
+            .filter(
+                Q(num_channel_filters__gt=1)
+                | (Q(organization__slack_team_identity__isnull=False) | Q(num_org_telegram_channels__gt=0))
+                | Q(channel_filters__is_default=True, channel_filters__escalation_chain__isnull=False)
+                | Q(channel_filters__is_default=True, channel_filters__notification_backends__isnull=False),
+                integration=AlertReceiveChannel.INTEGRATION_DIRECT_PAGING,
+            )
+            .distinct()
         )
 
     @property

engine/apps/user_management/tests/test_organization.py

@@ -217,6 +217,7 @@ def test_get_notifiable_direct_paging_integrations(
             assert arc in notifiable_direct_paging_integrations
         else:
             assert arc not in notifiable_direct_paging_integrations
+        return notifiable_direct_paging_integrations
 
     # integration has no default channel filter
     org, arc = _make_org_and_arc()
@@ -269,3 +270,11 @@ def test_get_notifiable_direct_paging_integrations(
     escalation_chain = make_escalation_chain(org)
     make_channel_filter(arc, is_default=True, notify_in_slack=False, escalation_chain=escalation_chain)
     _assert(org, arc)
+
+    # integration has more than one channel filter associated with it, nevertheless the integration should only
+    # be returned once
+    org, arc = _make_org_and_arc()
+    make_channel_filter(arc, is_default=True)
+    make_channel_filter(arc, is_default=False)
+    notifiable_direct_paging_integrations = _assert(org, arc)
+    assert notifiable_direct_paging_integrations.count() == 1