feat(course): enhance professor serializer and logging in PlugNMeet

- Add avatar field to ProfessorListSerializer using FileFieldSerializer for better avatar handling.
- Update room ID generation in CourseLiveSessionRoomCreateAPIView to use a consistent format.
- Introduce debug logging in PlugNMeetClient for room creation payload to aid in troubleshooting.

apps/course/serializers/professor.py

@@ -2,6 +2,7 @@ from django.contrib.auth import get_user_model
 from rest_framework import serializers
 
 from apps.account.serializers import UserProfileSerializer
+from utils import FileFieldSerializer, absolute_url
 
 
 User = get_user_model()
@@ -10,10 +11,11 @@ User = get_user_model()
 class ProfessorListSerializer(serializers.ModelSerializer):
     course_count = serializers.IntegerField(read_only=True)
     lesson_count = serializers.IntegerField(read_only=True)
+    avatar = FileFieldSerializer(required=False)
 
     class Meta:
         model = User
-        fields = ['id', 'slug', 'fullname', 'experience_years', 'course_count', 'lesson_count']
+        fields = ['id', 'slug', 'fullname', 'avatar','experience_years', 'course_count', 'lesson_count']
 
 
 class ProfessorDetailSerializer(UserProfileSerializer):

apps/course/services/plugnmeet.py

@@ -28,6 +28,7 @@ class PlugNMeetClient:
 
     def create_room(self, payload: Dict[str, Any]) -> Dict[str, Any]:
         # Convert entire payload keys to camelCase as required by PlugNMeet protocol
+        print(f"[PlugNMeet] Creating room with payload: {payload}")
         prepared = self._camelize_dict(payload)
         return self._post("/auth/room/create", prepared)
 

apps/course/views/live_session.py

@@ -41,7 +41,7 @@ class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
         logger.info(f"[LiveSession Create] Permission granted for user_id={request.user.id} course={slug}")
 
         subject = serializer.validated_data.get('subject') or f"{course.title} Live Session"
-        room_id = serializer.validated_data.get('room_id') or self._build_room_id(course)
+        room_id = self._build_room_id(course)
         metadata = self._build_metadata(subject)
 
         payload = {
@@ -105,7 +105,7 @@ class CourseLiveSessionRoomCreateAPIView(GenericAPIView):
 
     @staticmethod
     def _build_room_id(course: Course) -> str:
-        return f"{course.id}:imamjavad"
+        return f"{course.id}-imamjavad"
 
     def _build_metadata(self, subject: str) -> dict:
         # Build secured, centralized metadata. Client overrides are NOT allowed.