Handle telegram message to reply to not found on send log task (#3587)

Similar to https://github.com/grafana/oncall/pull/404

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Changed
+
+- Handle message to reply to not found in Telegram send log ([#3587](https://github.com/grafana/oncall/pull/3587))
+
 ## v1.3.81 (2023-12-28)
 
 ### Added

engine/apps/telegram/tasks.py

@@ -170,6 +170,12 @@ def send_log_and_actions_message(self, channel_chat_id, group_chat_id, channel_m
                         f"due to 'Chat not found'. alert_group {alert_group.pk}"
                     )
                     return
+                elif e.message == "Message to reply not found":
+                    logger.warning(
+                        f"Could not send log and actions messages to Telegram group with id {group_chat_id} "
+                        f"due to 'Message to reply not found'. alert_group {alert_group.pk}"
+                    )
+                    return
                 else:
                     raise
 

engine/apps/telegram/tests/test_tasks.py

@@ -0,0 +1,47 @@
+from unittest.mock import patch
+
+import pytest
+from telegram import error
+
+from apps.telegram.client import TelegramClient
+from apps.telegram.models import TelegramMessage
+from apps.telegram.tasks import send_log_and_actions_message
+
+
+@patch.object(TelegramClient, "send_raw_message", side_effect=error.BadRequest("Message to reply not found"))
+@pytest.mark.django_db
+def test_send_log_and_actions_replied_message_not_found(
+    mock_send_message,
+    make_organization_and_user,
+    make_telegram_user_connector,
+    make_alert_receive_channel,
+    make_alert_group,
+    make_alert,
+    make_telegram_message,
+    caplog,
+):
+    # set up a user with Telegram account connected
+    organization, user = make_organization_and_user()
+    make_telegram_user_connector(user)
+
+    # create an alert group with an existing Telegram message in user's DM
+    alert_receive_channel = make_alert_receive_channel(organization)
+    alert_group = make_alert_group(alert_receive_channel)
+    make_alert(alert_group=alert_group, raw_request_data=alert_receive_channel.config.example_payload)
+    telegram_message = make_telegram_message(
+        alert_group=alert_group,
+        message_type=TelegramMessage.PERSONAL_MESSAGE,
+        chat_id=str(user.telegram_connection.telegram_chat_id),
+        message_id=123,
+    )
+
+    reply_to_message_id = 321
+    send_log_and_actions_message(
+        telegram_message.chat_id, "group_chat_id", telegram_message.message_id, reply_to_message_id
+    )
+
+    expected_msg = (
+        f"Could not send log and actions messages to Telegram group with id group_chat_id "
+        f"due to 'Message to reply not found'. alert_group {alert_group.pk}"
+    )
+    assert expected_msg in caplog.text