Changeset 0.28.3 (#187)

server/handlers/workflow_instances.go

@@ -338,18 +338,36 @@ func (h *WorkflowInstanceHandler) readWorkflowState(ctx context.Context, channel
 	return
 }
 
-// emitWorkflowEvent pushes a workflow event to all connected clients in the channel's room.
+// emitWorkflowEvent pushes a workflow event to all user participants in the channel.
+// Uses SendToUser (not room-scoped Bus.Publish) because room subscriptions are
+// not yet wired on the client side. See websocket.md § Room Model.
 func (h *WorkflowInstanceHandler) emitWorkflowEvent(label, channelID string, data map[string]any) {
 	if h.hub == nil {
 		return
 	}
 	payload, _ := json.Marshal(data)
-	h.hub.GetBus().Publish(events.Event{
+	evt := events.Event{
 		Label:   label,
-		Room:    channelID,
 		Payload: payload,
 		Ts:      time.Now().UnixMilli(),
-	})
+	}
+
+	// Send to all user participants in the channel
+	rows, err := database.DB.Query(database.Q(`
+		SELECT participant_id FROM channel_participants
+		WHERE channel_id = $1 AND participant_type = 'user'
+	`), channelID)
+	if err != nil {
+		log.Printf("[ws] %s: failed to query participants for channel %s: %v", label, channelID[:min(8, len(channelID))], err)
+		return
+	}
+	defer rows.Close()
+	for rows.Next() {
+		var uid string
+		if rows.Scan(&uid) == nil {
+			h.hub.SendToUser(uid, evt)
+		}
+	}
 }
 
 // triggerOnComplete checks if the workflow has an on_complete chain config