levesessions for webhooks

apps/course/views/live_session.py

@@ -46,6 +46,13 @@ def get_live_session_subject(course):
     return f"{title} Live Session"
 
 
+def get_plugnmeet_webhook_url() -> str:
+    base = getattr(settings, 'SITE_DOMAIN', '').rstrip('/')
+    if not base:
+        raise ImproperlyConfigured('SITE_DOMAIN must be configured for PlugNMeet webhook delivery.')
+    return f"{base}/api/courses/plugnmeet/webhook/"
+
+
 class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
     permission_classes = [IsAuthenticated]
     authentication_classes = [TokenAuthentication]
@@ -244,6 +251,7 @@ class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
         # Build secured, centralized metadata. Client overrides are NOT allowed.
         return {
             'room_title': subject,
+            'webhook_url': get_plugnmeet_webhook_url(),
             'default_lock_settings': {
                 'lock_microphone': True,
                 'lock_webcam': True,