UPDATE

notifications/services.py

@@ -0,0 +1,33 @@
+import json
+import uuid
+from datetime import datetime, timezone
+
+from django.conf import settings
+from redis import Redis
+
+
+def get_notifications_redis_client():
+    redis_url = getattr(settings, "NOTIFICATION_REDIS_URL", None) or _default_redis_url()
+    return Redis.from_url(redis_url, decode_responses=True)
+
+
+def publish_notification(channel, title, message, *, level="info", metadata=None, event="notification"):
+    payload = {
+        "id": str(uuid.uuid4()),
+        "event": event,
+        "title": title,
+        "message": message,
+        "level": level,
+        "metadata": metadata or {},
+        "created_at": datetime.now(timezone.utc).isoformat(),
+    }
+    redis_client = get_notifications_redis_client()
+    redis_client.publish(channel, json.dumps(payload))
+    return payload
+
+
+def _default_redis_url():
+    broker_url = getattr(settings, "CELERY_BROKER_URL", "")
+    if isinstance(broker_url, str) and broker_url.startswith("redis://"):
+        return broker_url
+    return "redis://127.0.0.1:6379/1"