Enhance Incident Notification Messages

src/firefighter/incidents/forms/create_incident.py

@@ -79,6 +79,7 @@ def trigger_incident_workflow(
         self,
         creator: User,
         impacts_data: dict[str, ImpactLevel],
+        source_channel: Any,
         *args: Any,
         **kwargs: Any,
     ) -> None:
@@ -89,4 +90,5 @@ def trigger_incident_workflow(
         create_incident_conversation.send(
             "create_incident_form",
             incident=incident,
+            source_channel=source_channel
         )

src/firefighter/slack/messages/slack_messages.py

@@ -838,12 +838,23 @@ def get_text(self) -> str:
         return f"Incident #{self.incident.id} might not need an incident channel, as it is {self.incident.priority.name}."
 
 
-class SlackMessageIncidentCreationWarning(SlackMessageSurface):
-    id = "ff_incident_creation_warning"
+class SlackMessageIncidentOpeningWarning(SlackMessageSurface):
+    id = "ff_incident_opening_warning"
 
     def __init__(self, channel: Any):
         self.channel = channel
         super().__init__()
 
     def get_text(self) -> str:
         return f"<@{self.channel["user_id"]}> is opening an incident at the moment. Please wait before creating one. :ballot_box_with_ballot:"
+
+
+class SlackMessageIncidentCreationRedirection(SlackMessageSurface):
+    id = "ff_incident_creation_redirection"
+
+    def __init__(self, channel: Any):
+        self.channel = channel
+        super().__init__()
+
+    def get_text(self) -> str:
+        return f"A new incident has just been created in #{self.channel.name}. You can go there to follow the incident."

src/firefighter/slack/signals/create_incident_conversation.py

@@ -15,6 +15,7 @@
 from firefighter.incidents.signals import create_incident_conversation
 from firefighter.slack.messages.slack_messages import (
     SlackMessageDeployWarning,
+    SlackMessageIncidentCreationRedirection,
     SlackMessageIncidentDeclaredAnnouncement,
     SlackMessageIncidentDeclaredAnnouncementGeneral,
 )
@@ -37,13 +38,15 @@
 @receiver(signal=create_incident_conversation)
 def create_incident_slack_conversation(
     incident: Incident,
+    source_channel: IncidentChannel,
     *_args: Any,
     **_kwargs: Any,
 ) -> None | int:
     """Main process to open an incident channel, set it up and invite responders. It MUST be called when an incident is created.
 
     Args:
         incident (Incident): The incident to open. It should be saved before calling this function, and have its first incident update created.
+        source_channel (IncidentChannel): The channel from which the incident was opened, used for sending notifications and updates.
 
     """
     channel: IncidentChannel | None = IncidentChannel.objects.create_incident_channel(
@@ -132,4 +135,14 @@ def create_incident_slack_conversation(
         incident=incident,
         channel=channel,
     )
+
+    notify_incident_created(channel=channel, source_channel=source_channel)
+
     return None
+
+
+def notify_incident_created(channel: IncidentChannel, source_channel: IncidentChannel) -> None:
+    """Notify the Slack channel that the incident has been created."""
+    message = SlackMessageIncidentCreationRedirection(channel)
+
+    source_channel.send_message_and_save(message)

src/firefighter/slack/views/modals/open.py

@@ -68,10 +68,10 @@ class OpenModal(SlackModal):
     def open_modal_aio(self, ack: Ack, body: dict[str, Any], **kwargs: Any) -> None:
         super().open_modal_aio(ack, body, **kwargs)
         from firefighter.slack.messages.slack_messages import (  # noqa: PLC0415
-            SlackMessageIncidentCreationWarning,
+            SlackMessageIncidentOpeningWarning,
         )
 
-        warning_message = SlackMessageIncidentCreationWarning(channel=body)
+        warning_message = SlackMessageIncidentOpeningWarning(channel=body)
 
         channel, _ = Conversation.objects.get_or_create(
             channel_id=body["channel_id"],
@@ -80,6 +80,8 @@ def open_modal_aio(self, ack: Ack, body: dict[str, Any], **kwargs: Any) -> None:
                 },
         )
 
+        self.source_channel = channel
+
         channel.send_message_and_save(warning_message)
 
     def build_modal_fn(
@@ -157,6 +159,7 @@ def build_modal_fn(
             *set_details_blocks,
             *done_review_blocks,
         ]
+
         return View(
             type="modal",
             title="Create an incident"[:24],
@@ -516,6 +519,7 @@ def handle_modal_fn(  # type: ignore
                         details_form.trigger_incident_workflow(
                             creator=user,
                             impacts_data=data.get("impact_form_data") or {},
+                            source_channel=self.source_channel
                         )
                 except:  # noqa: E722
                     logger.exception("Error triggering incident workflow")