Refactor CourseLiveSessionRoomCreateAPIView to streamline live session creation

- Updated permission logic for course management.
- Simplified room ID setup and metadata handling.
- Enhanced PlugNMeetClient integration for room creation and token generation.
- Improved error handling and logging for API interactions.
- Adjusted response structure to include the generated access token for frontend use.

apps/course/views/live_session.py

@@ -17,7 +17,7 @@ from apps.course.models import Course, CourseLiveSession, Participant, LiveSessi
 from apps.course.serializers import LiveSessionRoomCreateSerializer, LiveSessionTokenSerializer, LiveSessionRecordedFileSerializer, LiveSessionRecordingSerializer
 from apps.course.services.plugnmeet import PlugNMeetClient, PlugNMeetError
 from utils.exceptions import AppAPIException
-
+from django.conf import settings
 logger = logging.getLogger(__name__)
 
 
@@ -45,69 +45,70 @@ class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
     )
 
     def post(self, request, slug, *args, **kwargs):
-        # 1. Validation and Permission Logic
+        # 1. Standard Permissions Logic
         course = get_object_or_404(Course, slug=slug)
         if not request.user.can_manage_course(course):
-            raise AppAPIException({'message': 'Permission denied'}, status_code=status.HTTP_403_FORBIDDEN)
+             raise AppAPIException({'message': 'Permission denied'}, status_code=403)
 
-        # 2. Build Safe Room ID (Prefix with 'room-' to satisfy NATS rules)
-        # OLD: f"{course.id}-imamjavad" -> "9-imamjavad" (Risk of NATS errors)
-        # NEW: f"room-{course.id}-imamjavad" -> "room-9-imamjavad" (Safe)
-        room_id = f"room-{course.id}-imamjavad" 
-        
+        # 2. Setup ID and Metadata
+        room_id = f"room-{course.id}-imamjavad"
         subject = f"{course.title} Live Session"
         metadata = self._build_metadata(subject)
 
-        # 3. Create Room via PlugNMeet API
+        # 3. Use your CLEAN PlugNMeetClient
         try:
-            client = PlugNMeetClient()
+            client = PlugNMeetClient() # Loads keys from settings automatically
             
-            # Note: client.create_room only CREATES the room. 
-            # It does not give you a token to join it.
+            # This uses the keys internally to talk to the server
             plugnmeet_response = client.create_room({
                 'room_id': room_id,
                 'metadata': metadata,
             })
+            
+            # 4. Generate the JOIN TOKEN (The Entry Ticket)
+            # Users CANNOT enter without this.
+            token_payload = {
+                "room_id": room_id,
+                "user_info": {
+                    "name": f"{request.user.first_name} {request.user.last_name}",
+                    "user_id": str(request.user.id),
+                    "is_admin": True,
+                    "is_hidden": False
+                }
+            }
+            
+            # Check if your client has a method for this, otherwise use manual:
+            # access_token = client.get_join_token(token_payload)
+            # If not, we do it manually here using the SAME secret from settings:
+            
+            pnm_token = jwt.encode(
+                {
+                    "iss": settings.PLUGNMEET_API_KEY,
+                    "exp": int(time.time()) + 3600,
+                    "sub": str(request.user.id),
+                    **token_payload
+                },
+                settings.PLUGNMEET_API_SECRET,
+                algorithm="HS256"
+            )
+
         except Exception as exc:
             logger.error(f"PlugNMeet Error: {exc}")
             raise AppAPIException({'message': str(exc)}, status_code=500)
 
-        # 4. Save to Database
+        # 5. Database Logic
         session, created = CourseLiveSession.objects.get_or_create(
-            course=course,
-            room_id=room_id,
-            defaults={'subject': subject, 'started_at': timezone.now()},
+            course=course, room_id=room_id,
+            defaults={'subject': subject, 'started_at': timezone.now()}
         )
 
-        # 5. GENERATE JOIN TOKEN (Critical for User Access)
-        # You must fetch these exactly as they are in your config.yaml
-        PNM_API_KEY = "habibmeet_api_key_2024" 
-        PNM_SECRET = "habibmeet_secret_zumyyYWqv7KR2kUqvYdq4z4sXg7XTBD2ljT6_2024"
-
-        token_payload = {
-            "iss": PNM_API_KEY, # Issuer must be the API Key
-            "exp": int(time.time()) + 3600, # 1 hour expiry
-            "sub": str(request.user.id),
-            "room_id": room_id,
-            "name": f"{request.user.first_name} {request.user.last_name}",
-            "is_admin": True, # Gives moderator privileges
-            "user_id": str(request.user.id),
-        }
-
-        # SIGN with the SECRET, not the key
-        token = jwt.encode(token_payload, PNM_SECRET, algorithm="HS256")
-
         return Response({
             'success': True,
-            'session': {
-                'id': session.id,
-                'room_id': session.room_id,
-                'started_at': session.started_at,
-            },
-            # Frontend uses this to connect: 
-            # https://meet.newhorizonco.uk/?access_token={access_token}
-            'access_token': token 
-        }, status=status.HTTP_201_CREATED)
+            'session': {'id': session.id, 'room_id': session.room_id},
+            'access_token': pnm_token  # <--- REQUIRED for frontend
+        }, status=201)
+
+        
     # def post(self, request, slug, *args, **kwargs):
     #     logger.info(f"[LiveSession Create] Request from user_id={request.user.id} for course={slug}")