import logging from datetime import timedelta from django.core.exceptions import ImproperlyConfigured from django.shortcuts import get_object_or_404 from django.utils import timezone from rest_framework import status from rest_framework.generics import GenericAPIView from rest_framework.permissions import IsAuthenticated, AllowAny from rest_framework.authentication import TokenAuthentication from rest_framework.response import Response from drf_yasg.utils import swagger_auto_schema from drf_yasg import openapi import time import jwt from apps.course.models import Course, CourseLiveSession, Participant, LiveSessionRecording, LiveSessionUser from apps.course.models.lesson import Lesson, CourseLesson from apps.course.serializers import LiveSessionRoomCreateSerializer, LiveSessionTokenSerializer, LiveSessionRecordedFileSerializer, LiveSessionRecordingSerializer, LiveSessionRecordingControlSerializer from apps.course.services.plugnmeet import PlugNMeetClient, PlugNMeetError from apps.course.services.web_egress import WebEgressClient, WebEgressError, stop_session_web_egress_if_active from utils.exceptions import AppAPIException from django.conf import settings logger = logging.getLogger(__name__) def get_live_session_subject(course): next_session_number = course.live_sessions.count() + 1 return f"Live Session {next_session_number}" 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/" def get_online_class_frontend_base() -> str: base = getattr( settings, "ONLINE_CLASS_FRONTEND_DOMAIN", getattr(settings, "SITE_DOMAIN", ""), ).rstrip("/") if base and not base.startswith(("http://", "https://")): base = f"https://{base}" return base def get_web_egress_callback_url() -> str: base = getattr(settings, "SITE_DOMAIN", "").rstrip("/") if not base: raise ImproperlyConfigured( "SITE_DOMAIN must be configured for WebEgress callback delivery." ) return f"{base}/api/courses/online/room/recording/web-egress/callback/" def decode_plugnmeet_access_token(raw_token: str) -> dict: try: return jwt.decode( raw_token, settings.PLUGNMEET_API_SECRET, algorithms=["HS256"], ) except jwt.PyJWTError as exc: raise AppAPIException( {"message": "Invalid or expired meeting access token."}, status_code=status.HTTP_401_UNAUTHORIZED, ) from exc def extract_meeting_token_from_request(request) -> str: auth_header = request.headers.get("Authorization", "").strip() if auth_header.lower().startswith("bearer "): return auth_header[7:].strip() if auth_header.lower().startswith("token "): return auth_header[6:].strip() if auth_header: return auth_header token = request.data.get("access_token") or request.query_params.get("access_token") if token: return token raise AppAPIException( {"message": "Meeting access token is required."}, status_code=status.HTTP_401_UNAUTHORIZED, ) def get_session_from_meeting_token(request, *, require_admin: bool = False): meeting_token = extract_meeting_token_from_request(request) claims = decode_plugnmeet_access_token(meeting_token) room_id = claims.get("room_id") if not room_id: raise AppAPIException( {"message": "Meeting token is missing room information."}, status_code=status.HTTP_400_BAD_REQUEST, ) session = get_object_or_404(CourseLiveSession, room_id=room_id) if require_admin and not claims.get("is_admin"): raise AppAPIException( {"message": "Only moderators can control recording."}, status_code=status.HTTP_403_FORBIDDEN, ) return session, claims def is_web_egress_recording_status(status_value: str) -> bool: return status_value in { CourseLiveSession.WEB_EGRESS_STATUS_STARTING, CourseLiveSession.WEB_EGRESS_STATUS_RECORDING, } def build_web_egress_title(session: CourseLiveSession) -> str: return session.recording_title or f"{session.subject} - Recording" def sync_session_recording_titles(session: CourseLiveSession) -> None: base_title = session.recording_title or session.subject recordings = list( LiveSessionRecording.objects.filter(session=session).order_by( "created_at", "id", ) ) total = len(recordings) if not total: return for index, recording in enumerate(recordings, start=1): title = base_title if total == 1 else f"{base_title} part {index}" if recording.title != title: recording.title = title recording.save(update_fields=["title", "updated_at"]) if not recording.file: continue lesson = Lesson.objects.filter(content_file=recording.file.name).first() if lesson and lesson.title != title: lesson.title = title lesson.save(update_fields=["title", "updated_at"]) CourseLesson.objects.filter(lesson=lesson).update( title=title, updated_at=timezone.now(), ) class CourseLiveSessionRoomCreateAPIView(GenericAPIView): permission_classes = [IsAuthenticated] authentication_classes = [TokenAuthentication] serializer_class = LiveSessionRoomCreateSerializer @swagger_auto_schema( operation_description="Create a live session room for a course", tags=["Imam-Javad - Course"], manual_parameters=[ openapi.Parameter( 'slug', openapi.IN_PATH, description="Course slug", type=openapi.TYPE_STRING, required=True ) ], responses={ 201: openapi.Response( description="Live session room created successfully" ) } ) def post(self, request, slug, *args, **kwargs): # 1. Standard Permissions Logic course = get_object_or_404(Course, slug__contains=[{"title": slug}]) if not request.user.can_manage_course(course): raise AppAPIException({'message': 'Permission denied'}, status_code=403) # 2. Setup ID and Metadata subject = get_live_session_subject(course) # 3. Database Logic - Check FIRST before calling PlugNMeet session = CourseLiveSession.objects.filter( course=course, ended_at__isnull=True ).first() needs_room_creation = False if session: room_id = session.room_id logger.info(f"[LiveSession Create] Found active session - session_id={session.id} room_id={room_id}") else: # No active session, always create a new one with a dynamic room_id timestamp = int(time.time()) room_id = f"room-{course.id}-{timestamp}" session = CourseLiveSession.objects.create( course=course, room_id=room_id, subject=subject, started_at=timezone.now() ) needs_room_creation = True logger.info(f"[LiveSession Create] Created new session - session_id={session.id} room_id={room_id}") # 4. Create room in PlugNMeet ONLY if needed if needs_room_creation: metadata = self._build_metadata(subject) try: client = PlugNMeetClient() plugnmeet_response = client.create_room({ 'room_id': room_id, 'empty_timeout': 90, 'metadata': metadata, }) logger.info(f"[LiveSession Create] Room created in PlugNMeet - room_id={room_id}") except Exception as exc: logger.error(f"[LiveSession Create] PlugNMeet Error: {exc}") # If room creation fails, revert the session changes if session.ended_at is None: session.ended_at = timezone.now() session.save(update_fields=['ended_at', 'updated_at']) raise AppAPIException({'message': f'Failed to create room: {str(exc)}'}, status_code=500) else: logger.info(f"[LiveSession Create] Skipping room creation - room already exists - room_id={room_id}") # 5. Generate the JOIN TOKEN (The Entry Ticket) 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 } } 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" ) logger.info(f"[LiveSession Create] Success - session_id={session.id} room_id={room_id} user_id={request.user.id}") return Response({ 'success': True, 'session': {'id': session.id, 'room_id': session.room_id}, 'access_token': pnm_token }, status=201) # def post(self, request, slug, *args, **kwargs): # logger.info(f"[LiveSession Create] Request from user_id={request.user.id} for course={slug}") # data = dict(request.data or {}) # if 'metadata' in data: # logger.warning("[LiveSession Create] 'metadata' provided by client will be ignored for security reasons.") # data.pop('metadata', None) # serializer = self.get_serializer(data=data) # serializer.is_valid(raise_exception=True) # course = get_object_or_404(Course, slug=slug) # if not request.user.can_manage_course(course): # logger.warning(f"[LiveSession Create] Permission denied - user_id={request.user.id} course={slug}") # raise AppAPIException({'message': 'You do not have permission to create a live session for this course.'}, status_code=status.HTTP_403_FORBIDDEN) # 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 = self._build_room_id(course) # metadata = self._build_metadata(subject) # payload = { # 'room_id': room_id, # 'metadata': metadata, # } # logger.info(f"[LiveSession Create] Calling PlugNMeet API - room_id={room_id} course={slug}") # try: # client = PlugNMeetClient() # plugnmeet_response = client.create_room(payload) # logger.info(f"[LiveSession Create] PlugNMeet room created successfully - room_id={room_id}") # except ImproperlyConfigured as exc: # logger.error(f"[LiveSession Create] Configuration error - {str(exc)}") # raise AppAPIException({'message': str(exc)}, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR) # except PlugNMeetError as exc: # logger.error(f"[LiveSession Create] PlugNMeet API error - room_id={room_id} error={str(exc)}") # detail = exc.response_data or {'message': str(exc)} # status_code = exc.status_code or status.HTTP_502_BAD_GATEWAY # raise AppAPIException(detail, status_code=status_code) # session, created = CourseLiveSession.objects.get_or_create( # course=course, # room_id=room_id, # defaults={ # 'subject': subject, # 'started_at': timezone.now(), # }, # ) # if created: # logger.info(f"[LiveSession Create] New session created - session_id={session.id} room_id={room_id} course={slug}") # else: # logger.info(f"[LiveSession Create] Existing session reactivated - session_id={session.id} room_id={room_id} course={slug}") # updates = {} # if session.subject != subject: # session.subject = subject # updates['subject'] = subject # if session.room_id != room_id: # session.room_id = room_id # updates['room_id'] = room_id # if session.started_at is None: # session.started_at = timezone.now() # updates['started_at'] = session.started_at # if updates: # session.save(update_fields=list(updates.keys())) # logger.info(f"[LiveSession Create] Session updated - session_id={session.id} fields={list(updates.keys())}") # logger.info(f"[LiveSession Create] Success - session_id={session.id} room_id={room_id} course={slug} user_id={request.user.id}") # return Response({ # 'session': { # 'id': session.id, # 'room_id': session.room_id, # 'subject': session.subject, # 'started_at': session.started_at, # }, # 'plugnmeet': plugnmeet_response, # }, status=status.HTTP_201_CREATED if created else status.HTTP_200_OK) @staticmethod def _build_room_id(course: Course) -> str: return f"room-{course.id}-imamjavad" def _build_metadata(self, subject: str) -> dict: # 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, 'lock_screen_sharing': True, 'lock_whiteboard': True, 'lock_shared_notepad': False, 'lock_chat': False, 'lock_chat_send_message': False, 'lock_chat_file_share': False, 'lock_private_chat': False, }, 'room_features': { 'allow_webcams': True, 'mute_on_start': True, 'allow_screen_sharing': True, 'allow_recording': True, 'allow_rtmp': False, 'allow_view_other_webcams': True, 'allow_view_other_participants_list': True, 'admin_only_webcams': False, 'allow_polls': True, 'room_duration': 0, 'chat_features': { 'allow_chat': True, 'allow_file_upload': True, }, 'shared_note_pad_features': { 'allowed_shared_note_pad': True, }, 'whiteboard_features': { 'allowed_whiteboard': True, }, 'breakout_room_features': { 'is_allow': True, 'allowed_number_rooms': 6, }, 'waiting_room_features': { 'is_active': False, }, 'recording_features': { 'is_allow': True, 'is_allow_cloud': True, 'is_allow_local': False, 'enable_auto_cloud_recording': False, 'only_record_admin_webcams': False, }, }, } def _deep_update(self, base: dict, overrides: dict) -> dict: for key, value in overrides.items(): if isinstance(value, dict) and isinstance(base.get(key), dict): base[key] = self._deep_update(base.get(key, {}), value) else: base[key] = value return base class CourseLiveSessionTokenAPIView(GenericAPIView): permission_classes = [IsAuthenticated] authentication_classes = [TokenAuthentication] serializer_class = LiveSessionTokenSerializer @swagger_auto_schema( operation_description="Generate access token for live session", tags=["Imam-Javad - Course"], responses={ 200: openapi.Response( description="Live session token generated successfully" ) } ) def post(self, request, *args, **kwargs): serializer = self.get_serializer(data=request.data) serializer.is_valid(raise_exception=True) course_slug = serializer.validated_data['course_slug'] user = request.user logger.info(f"[LiveSession Token] Request from user_id={user.id} for course={course_slug}") try: course = Course.objects.filter(slug__contains=[{"title": course_slug}]).first() if not course: raise Course.DoesNotExist except Course.DoesNotExist: logger.warning(f"[LiveSession Token] Course not found - course={course_slug} user_id={user.id}") raise AppAPIException({'message': 'Course not found.'}, status_code=status.HTTP_404_NOT_FOUND) if not course.is_online: logger.warning(f"[LiveSession Token] Course not configured for online - course={course_slug} user_id={user.id}") raise AppAPIException({'message': 'Course is not configured for online sessions.'}, status_code=status.HTTP_400_BAD_REQUEST) try: session = CourseLiveSession.objects.select_related('course').get( course=course, ended_at__isnull=True ) logger.info(f"[LiveSession Token] Active session found in DB - session_id={session.id} room_id={session.room_id} course={course_slug}") except CourseLiveSession.DoesNotExist: logger.warning(f"[LiveSession Token] No active session found - course={course_slug} user_id={user.id}") raise AppAPIException({'message': 'No active live session found for this course.'}, status_code=status.HTTP_404_NOT_FOUND) # Check user role first to determine permissions is_admin = user.can_manage_course(course) user_role = "professor" if is_admin else "student" logger.info(f"[LiveSession Token] User role determined - user_id={user.id} role={user_role} course={course_slug}") # CRITICAL: Verify the room is actually active in PlugNMeet before issuing token # This prevents issuing tokens for rooms that have crashed or ended without webhook notification room_id = session.room_id room_is_active = self._verify_room_is_active(session) if not room_is_active: # Room is not active in PlugNMeet but we have a session record if is_admin: # For professors: Auto-recreate the room in PlugNMeet logger.info(f"[LiveSession Token] Room inactive but professor requesting - recreating room - room_id={room_id} session_id={session.id}") try: self._recreate_room_in_plugnmeet(course, session) logger.info(f"[LiveSession Token] Room recreated successfully - room_id={room_id}") except Exception as e: logger.error(f"[LiveSession Token] Failed to recreate room - room_id={room_id} error={str(e)}") raise AppAPIException({ 'status': 'False', 'message': f'Failed to recreate room: {str(e)}', 'msg': f'Failed to recreate room: {str(e)}' }, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR) else: # For students: Refuse token - they cannot create rooms logger.error(f"[LiveSession Token] Room not active and user is student - refusing token - room_id={room_id} user_id={user.id}") raise AppAPIException({ 'status': 'False', 'message': 'room is not active. Please wait for the professor to start the class.', 'msg': 'room is not active. Please wait for the professor to start the class.' }, status_code=status.HTTP_400_BAD_REQUEST) if not is_admin and not Participant.objects.filter(course=course, student_id=user.id, is_active=True).exists(): logger.warning(f"[LiveSession Token] Access denied - user_id={user.id} not enrolled in course={course_slug}") raise AppAPIException({'message': 'You do not have access to this live session.'}, status_code=status.HTTP_403_FORBIDDEN) user_info = { 'user_id': str(user.id), 'name': user.get_full_name() or user.email or user.username or f"user-{user.id}", 'is_admin': is_admin, } user_metadata = {} profile_pic = self._build_profile_url(request, user) logger.info(f"[LiveSession Token] Profile pic URL - user_id={user.id} url={profile_pic}") if profile_pic: user_metadata['profilePic'] = profile_pic if not is_admin: user_metadata['lock_settings'] = { 'lock_microphone': True, 'lock_screen_sharing': True, 'lock_webcam': True, 'lock_whiteboard': True, 'lock_shared_notepad': False, 'lock_chat': False, 'lock_chat_send_message': False, 'lock_chat_file_share': False, 'lock_private_chat': False, } else: user_metadata['is_hidden'] = False if user_metadata: user_info['user_metadata'] = user_metadata payload = { 'room_id': room_id, 'user_info': user_info, } logger.info(f"[LiveSession Token] Requesting token from PlugNMeet - room_id={room_id} user_id={user.id} role={user_role}") try: client = PlugNMeetClient() plugnmeet_response = client.get_join_token(payload) logger.info(f"[LiveSession Token] Token generated successfully - room_id={room_id} user_id={user.id}") # Fail-safe participant registration in database try: role = 'moderator' if is_admin else 'participant' LiveSessionUser.objects.update_or_create( session=session, user=user, defaults={ 'role': role, 'is_online': True, 'exited_at': None, 'entered_at': timezone.now() } ) logger.info(f"[LiveSession Token] Fail-safe registered user entry - session_id={session.id} user_id={user.id}") except Exception as e: logger.error(f"[LiveSession Token] Failed to register fail-safe user entry: {e}") except ImproperlyConfigured as exc: logger.error(f"[LiveSession Token] Configuration error - {str(exc)}") raise AppAPIException({'message': str(exc)}, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR) except PlugNMeetError as exc: logger.error(f"[LiveSession Token] PlugNMeet API error - room_id={room_id} user_id={user.id} error={str(exc)}") detail = exc.response_data or {'message': str(exc)} status_code = exc.status_code or status.HTTP_502_BAD_GATEWAY raise AppAPIException(detail, status_code=status_code) logger.info(f"[LiveSession Token] Success - room_id={room_id} user_id={user.id} role={user_role} course={course_slug}") return Response({ 'room_id': room_id, 'token': plugnmeet_response.get('token'), 'plugnmeet': plugnmeet_response, }) def _build_metadata(self, subject: str) -> dict: # Build secured, centralized metadata. Client overrides are NOT allowed. return { 'room_title': subject, 'default_lock_settings': { 'lock_microphone': True, 'lock_webcam': True, 'lock_screen_sharing': True, 'lock_whiteboard': True, 'lock_shared_notepad': False, 'lock_chat': False, 'lock_chat_send_message': False, 'lock_chat_file_share': False, 'lock_private_chat': False, }, 'room_features': { 'allow_webcams': True, 'mute_on_start': True, 'allow_screen_sharing': True, 'allow_recording': True, 'allow_rtmp': False, 'allow_view_other_webcams': True, 'allow_view_other_participants_list': True, 'admin_only_webcams': False, 'allow_polls': True, 'room_duration': 0, 'chat_features': { 'allow_chat': True, 'allow_file_upload': True, }, 'shared_note_pad_features': { 'allowed_shared_note_pad': True, }, 'whiteboard_features': { 'allowed_whiteboard': True, }, 'breakout_room_features': { 'is_allow': True, 'allowed_number_rooms': 6, }, 'waiting_room_features': { 'is_active': False, }, 'recording_features': { 'is_allow': True, 'is_allow_cloud': True, 'is_allow_local': False, 'enable_auto_cloud_recording': False, 'only_record_admin_webcams': False, }, }, } @staticmethod def _verify_room_is_active(session: CourseLiveSession) -> bool: """ Verify that the room is actually active in PlugNMeet. Args: session: The CourseLiveSession to verify Returns: bool: True if room is active in PlugNMeet, False otherwise Side effects: - Closes session in database if PlugNMeet reports room is inactive """ if not session.room_id: logger.warning(f"[Room Verify] Session has no room_id - session_id={session.id}") return False try: client = PlugNMeetClient() response = client.is_room_active(session.room_id) # Debug: Log full response logger.debug(f"[Room Verify] PlugNMeet response - room_id={session.room_id} response={response}") # Handle isActive as boolean or string is_active_raw = response.get('isActive', False) is_active = is_active_raw if isinstance(is_active_raw, bool) else str(is_active_raw).lower() == 'true' response_msg = response.get('msg', 'unknown') response_status = response.get('status', False) # Trust status and msg if they indicate active room if response_status and 'active' in response_msg.lower() and 'not' not in response_msg.lower(): is_active = True if is_active: logger.debug(f"[Room Verify] ✓ Room is active - room_id={session.room_id} session_id={session.id}") return True else: logger.warning(f"[Room Verify] ✗ Room is NOT active - room_id={session.room_id} session_id={session.id} msg={response_msg}") # Auto-close the session since room is not active stop_session_web_egress_if_active(session) now = timezone.now() session.ended_at = now session.save(update_fields=['ended_at', 'updated_at']) # Also set all users offline try: updated_count = LiveSessionUser.objects.filter( session=session, is_online=True ).update(is_online=False, exited_at=now, updated_at=now) logger.info(f"[Room Verify] Set {updated_count} users offline for session {session.id}") except Exception as e: logger.error(f"[Room Verify] Failed to set users offline: {e}") logger.info(f"[Room Verify] Session auto-closed - session_id={session.id} room_id={session.room_id}") return False except PlugNMeetError as e: error_msg = str(e) logger.error(f"[Room Verify] PlugNMeet API error - room_id={session.room_id} error={error_msg}") # If room not found, close the session if 'not found' in error_msg.lower() or 'does not exist' in error_msg.lower(): stop_session_web_egress_if_active(session) now = timezone.now() session.ended_at = now session.save(update_fields=['ended_at', 'updated_at']) # Also set all users offline try: updated_count = LiveSessionUser.objects.filter( session=session, is_online=True ).update(is_online=False, exited_at=now, updated_at=now) logger.info(f"[Room Verify] Set {updated_count} users offline (room not found) for session {session.id}") except Exception as ex: logger.error(f"[Room Verify] Failed to set users offline: {ex}") logger.warning(f"[Room Verify] Room not found - session closed - session_id={session.id}") return False except Exception as e: logger.error(f"[Room Verify] Unexpected error - room_id={session.room_id} error={type(e).__name__}: {str(e)}") return False def _recreate_room_in_plugnmeet(self, course: Course, session: CourseLiveSession) -> None: """ Recreate a room in PlugNMeet when session exists but room is inactive. This happens when: - Webhook failed to notify us of room closure - PlugNMeet server restarted - Room was manually ended Args: course: The course for which to recreate the room session: The existing session to reactivate Raises: PlugNMeetError: If room creation fails """ subject = session.subject or get_live_session_subject(course) room_id = session.room_id metadata = self._build_metadata(subject) payload = { 'room_id': room_id, 'metadata': metadata, } logger.info(f"[Room Recreate] Recreating room in PlugNMeet - room_id={room_id} session_id={session.id}") try: client = PlugNMeetClient() plugnmeet_response = client.create_room(payload) logger.info(f"[Room Recreate] Room recreated successfully - room_id={room_id} response={plugnmeet_response}") # Reset session ended_at to mark it as active again session.ended_at = None session.save(update_fields=['ended_at', 'updated_at']) logger.info(f"[Room Recreate] Session reactivated - session_id={session.id}") except PlugNMeetError as exc: logger.error(f"[Room Recreate] Failed to recreate room - room_id={room_id} error={str(exc)}") raise @staticmethod def _build_profile_url(request, user): avatar = getattr(user, 'avatar', None) if avatar and getattr(avatar, 'url', None): return request.build_absolute_uri(avatar.url) return None class CourseLiveSessionRecordingAPIView(GenericAPIView): permission_classes = [AllowAny] authentication_classes = [] serializer_class = LiveSessionRecordingControlSerializer @swagger_auto_schema( operation_description="Get or control WebEgress recording state for the current room.", tags=["Imam-Javad - Course"], responses={200: openapi.Response(description="Recording state returned successfully")}, ) def get(self, request, *args, **kwargs): session, _ = get_session_from_meeting_token(request, require_admin=False) self._refresh_status_from_service(session) return Response(self._build_status_payload(session), status=status.HTTP_200_OK) @swagger_auto_schema( operation_description="Start or stop WebEgress recording for the current room.", tags=["Imam-Javad - Course"], request_body=openapi.Schema( type=openapi.TYPE_OBJECT, required=["action"], properties={ "action": openapi.Schema( type=openapi.TYPE_STRING, enum=["start", "stop"], description="Recording control action.", ), }, ), responses={200: openapi.Response(description="Recording action completed successfully")}, ) def post(self, request, *args, **kwargs): if not getattr(settings, "ONLINE_CLASS_WEB_EGRESS_ENABLED", False): raise AppAPIException( {"message": "WebEgress recording is not enabled."}, status_code=status.HTTP_503_SERVICE_UNAVAILABLE, ) session, claims = get_session_from_meeting_token(request, require_admin=True) action = str(request.data.get("action") or "").strip().lower() if action not in {"start", "stop"}: raise AppAPIException( {"message": "Invalid recording action."}, status_code=status.HTTP_400_BAD_REQUEST, ) if action == "start": payload = self._start_recording(session, claims) else: payload = self._stop_recording(session) return Response(payload, status=status.HTTP_200_OK) def _start_recording(self, session: CourseLiveSession, claims: dict) -> dict: if is_web_egress_recording_status(session.web_egress_status): return self._build_status_payload( session, message="Recording is already active or being processed.", ) client = WebEgressClient() now = timezone.now() session.web_egress_status = CourseLiveSession.WEB_EGRESS_STATUS_STARTING session.web_egress_started_at = now session.web_egress_stopped_at = None session.web_egress_error = None session.save( update_fields=[ "web_egress_status", "web_egress_started_at", "web_egress_stopped_at", "web_egress_error", "updated_at", ] ) try: service_response = client.start_recording( { "session_id": session.id, "course_id": session.course_id, "room_id": session.room_id, "room_title": session.subject, "recording_title": build_web_egress_title(session), "join_url": self._build_web_egress_join_url(session), "callback_url": get_web_egress_callback_url(), "callback_token": getattr( settings, "ONLINE_CLASS_WEB_EGRESS_CALLBACK_TOKEN", "", ), "requested_by": { "user_id": str(claims.get("user_id") or claims.get("sub") or ""), "name": claims.get("name") or "", }, } ) except (ImproperlyConfigured, WebEgressError) as exc: session.web_egress_status = CourseLiveSession.WEB_EGRESS_STATUS_FAILED session.web_egress_error = str(exc) session.save( update_fields=[ "web_egress_status", "web_egress_error", "updated_at", ] ) raise AppAPIException( {"message": str(exc)}, status_code=status.HTTP_502_BAD_GATEWAY, ) session.web_egress_id = service_response.get("egress_id") or session.web_egress_id session.web_egress_status = CourseLiveSession.WEB_EGRESS_STATUS_RECORDING session.web_egress_error = None session.save( update_fields=[ "web_egress_id", "web_egress_status", "web_egress_error", "updated_at", ] ) return self._build_status_payload( session, message=service_response.get("message") or "Recording started successfully.", ) def _stop_recording(self, session: CourseLiveSession) -> dict: if not is_web_egress_recording_status(session.web_egress_status): return self._build_status_payload( session, message="Recording is not active.", ) client = WebEgressClient() try: service_response = client.stop_recording( { "session_id": session.id, "room_id": session.room_id, "egress_id": session.web_egress_id, } ) except (ImproperlyConfigured, WebEgressError) as exc: session.web_egress_status = CourseLiveSession.WEB_EGRESS_STATUS_FAILED session.web_egress_error = str(exc) session.save( update_fields=[ "web_egress_status", "web_egress_error", "updated_at", ] ) raise AppAPIException( {"message": str(exc)}, status_code=status.HTTP_502_BAD_GATEWAY, ) session.web_egress_status = CourseLiveSession.WEB_EGRESS_STATUS_STOPPING session.web_egress_stopped_at = timezone.now() session.web_egress_error = None session.save( update_fields=[ "web_egress_status", "web_egress_stopped_at", "web_egress_error", "updated_at", ] ) return self._build_status_payload( session, message=service_response.get("message") or "Recording stop requested successfully.", ) def _refresh_status_from_service(self, session: CourseLiveSession) -> None: if not getattr(settings, "ONLINE_CLASS_WEB_EGRESS_ENABLED", False): return if not session.web_egress_id and session.web_egress_status in { CourseLiveSession.WEB_EGRESS_STATUS_IDLE, CourseLiveSession.WEB_EGRESS_STATUS_COMPLETED, CourseLiveSession.WEB_EGRESS_STATUS_FAILED, }: return try: client = WebEgressClient() service_response = client.get_status( room_id=session.room_id, session_id=session.id, ) except (ImproperlyConfigured, WebEgressError) as exc: logger.warning( "[WebEgress] Failed to refresh status for session=%s room_id=%s error=%s", session.id, session.room_id, str(exc), ) return normalized_status = self._normalize_service_status(service_response) update_fields = ["updated_at"] if service_response.get("egress_id") is not None and session.web_egress_id != service_response.get("egress_id"): session.web_egress_id = service_response.get("egress_id") update_fields.append("web_egress_id") if normalized_status and session.web_egress_status != normalized_status: session.web_egress_status = normalized_status update_fields.append("web_egress_status") error_message = service_response.get("error") or service_response.get("message") if normalized_status == CourseLiveSession.WEB_EGRESS_STATUS_FAILED: session.web_egress_error = error_message or session.web_egress_error update_fields.append("web_egress_error") if normalized_status == CourseLiveSession.WEB_EGRESS_STATUS_RECORDING and not session.web_egress_started_at: session.web_egress_started_at = timezone.now() update_fields.append("web_egress_started_at") if normalized_status in { CourseLiveSession.WEB_EGRESS_STATUS_STOPPING, CourseLiveSession.WEB_EGRESS_STATUS_PROCESSING, CourseLiveSession.WEB_EGRESS_STATUS_COMPLETED, CourseLiveSession.WEB_EGRESS_STATUS_FAILED, } and not session.web_egress_stopped_at: session.web_egress_stopped_at = timezone.now() update_fields.append("web_egress_stopped_at") if len(update_fields) > 1: session.save(update_fields=update_fields) def _normalize_service_status(self, payload: dict) -> str: raw = str(payload.get("state") or payload.get("status") or "").strip().lower() if raw in {"recording", "active", "started"}: return CourseLiveSession.WEB_EGRESS_STATUS_RECORDING if raw in {"starting", "pending"}: return CourseLiveSession.WEB_EGRESS_STATUS_STARTING if raw in {"stopping"}: return CourseLiveSession.WEB_EGRESS_STATUS_STOPPING if raw in {"processing", "finalizing", "uploading"}: return CourseLiveSession.WEB_EGRESS_STATUS_PROCESSING if raw in {"completed", "done", "finished"}: return CourseLiveSession.WEB_EGRESS_STATUS_COMPLETED if raw in {"failed", "error"}: return CourseLiveSession.WEB_EGRESS_STATUS_FAILED if payload.get("is_recording") is True: return CourseLiveSession.WEB_EGRESS_STATUS_RECORDING if payload.get("is_recording") is False: return CourseLiveSession.WEB_EGRESS_STATUS_IDLE return "" def _build_web_egress_join_url(self, session: CourseLiveSession) -> str: client = PlugNMeetClient() join_response = client.get_join_token( { "room_id": session.room_id, "user_info": { "user_id": f"web-egress-{session.id}", "name": "Session Recorder", "is_admin": True, "is_hidden": True, }, } ) access_token = join_response.get("token") if not access_token: raise WebEgressError("PlugNMeet did not return a recorder access token.") frontend_base = get_online_class_frontend_base() return ( f"{frontend_base}/?access_token={access_token}" f"&web_egress=1&skip_landing=1&room_id={session.room_id}" ) def _build_status_payload(self, session: CourseLiveSession, message: str | None = None) -> dict: return { "success": True, "room_id": session.room_id, "session_id": session.id, "status": session.web_egress_status, "is_recording": is_web_egress_recording_status(session.web_egress_status), "egress_id": session.web_egress_id, "started_at": session.web_egress_started_at.isoformat() if session.web_egress_started_at else None, "stopped_at": session.web_egress_stopped_at.isoformat() if session.web_egress_stopped_at else None, "error": session.web_egress_error, "message": message, } class CourseLiveSessionWebEgressCallbackAPIView(GenericAPIView): permission_classes = [AllowAny] authentication_classes = [] @swagger_auto_schema( operation_description="Receive final WebEgress recording callback and save the final file.", tags=["Imam-Javad - Course"], responses={201: openapi.Response(description="Recording callback processed successfully")}, ) def post(self, request, *args, **kwargs): self._verify_callback_token(request) room_id = request.data.get("room_id") session_id = request.data.get("session_id") status_value = str(request.data.get("status") or "completed").strip().lower() egress_id = request.data.get("egress_id") error_message = request.data.get("error") or "" if not room_id and not session_id: raise AppAPIException( {"message": "room_id or session_id is required."}, status_code=status.HTTP_400_BAD_REQUEST, ) session = self._get_target_session(room_id=room_id, session_id=session_id) uploaded_file = request.FILES.get("file") duration_seconds = request.data.get("file_time_seconds") recording = None if uploaded_file: file_duration = None if duration_seconds not in (None, ""): try: file_duration = timedelta(seconds=float(duration_seconds)) except (TypeError, ValueError): file_duration = None recording = LiveSessionRecording.objects.create( session=session, file=uploaded_file, title=request.data.get("title") or build_web_egress_title(session), recording_type=request.data.get("recording_type") or "video", file_time=file_duration, ) session.web_egress_id = egress_id or session.web_egress_id session.web_egress_stopped_at = session.web_egress_stopped_at or timezone.now() session.web_egress_error = error_message or None session.web_egress_status = self._normalize_callback_status( status_value=status_value, has_file=bool(uploaded_file), ) session.save( update_fields=[ "web_egress_id", "web_egress_stopped_at", "web_egress_error", "web_egress_status", "updated_at", ] ) response_status = status.HTTP_201_CREATED if recording else status.HTTP_200_OK return Response( { "success": True, "session_id": session.id, "room_id": session.room_id, "recording_id": recording.id if recording else None, "status": session.web_egress_status, }, status=response_status, ) def _verify_callback_token(self, request) -> None: expected = getattr(settings, "ONLINE_CLASS_WEB_EGRESS_CALLBACK_TOKEN", "") if not expected: raise AppAPIException( {"message": "WebEgress callback token is not configured."}, status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, ) received = ( request.headers.get("X-Web-Egress-Token") or request.data.get("callback_token") or "" ) if received != expected: raise AppAPIException( {"message": "Invalid WebEgress callback token."}, status_code=status.HTTP_403_FORBIDDEN, ) def _get_target_session(self, *, room_id=None, session_id=None) -> CourseLiveSession: queryset = CourseLiveSession.objects.order_by("-started_at", "-id") if session_id: try: return queryset.get(id=int(session_id)) except (ValueError, CourseLiveSession.DoesNotExist): pass if room_id: return get_object_or_404(queryset, room_id=room_id) raise AppAPIException( {"message": "Unable to resolve target live session."}, status_code=status.HTTP_404_NOT_FOUND, ) @staticmethod def _normalize_callback_status(*, status_value: str, has_file: bool) -> str: if has_file: return CourseLiveSession.WEB_EGRESS_STATUS_COMPLETED if status_value in {"failed", "error"}: return CourseLiveSession.WEB_EGRESS_STATUS_FAILED if status_value in {"processing", "uploading", "stopping"}: return CourseLiveSession.WEB_EGRESS_STATUS_PROCESSING return CourseLiveSession.WEB_EGRESS_STATUS_COMPLETED class CourseLiveSessionRecordedFileAPIView(GenericAPIView): permission_classes = [AllowAny] authentication_classes = [TokenAuthentication] serializer_class = LiveSessionRecordingSerializer @swagger_auto_schema( operation_description="Update recorded file for live session", tags=["Imam-Javad - Course"], manual_parameters=[ openapi.Parameter( 'room_slug', openapi.IN_PATH, description="Room Slug (e.g. room-16)", type=openapi.TYPE_STRING, required=True ) ], responses={ 200: openapi.Response( description="Recorded file updated successfully" ) } ) def patch(self, request, room_slug, *args, **kwargs): logger.info(f"[LiveSession Recorded File] Request headers: {dict(request.headers)}") user_id = request.user.id if request.user else None logger.info(f"[LiveSession Recorded File] Request from user_id={user_id} for room_slug={room_slug}") import re match = re.search(r'\d+', room_slug) if not match: logger.error(f"[LiveSession Recorded File] Invalid room_slug: {room_slug}") raise AppAPIException({'message': f'Invalid room slug: {room_slug}'}, status_code=status.HTTP_400_BAD_REQUEST) course_id = int(match.group()) logger.info(f"[LiveSession Recorded File] Extracted course_id={course_id} from room_slug={room_slug}") course = get_object_or_404(Course, id=course_id) # If user is authenticated, enforce permissions. # Otherwise, allow the background recording service to proceed. if request.user and request.user.is_authenticated: if not request.user.can_manage_course(course): logger.warning(f"[LiveSession Recorded File] Permission denied - user_id={request.user.id} course_id={course_id}") raise AppAPIException({'message': 'You do not have permission to update this course.'}, status_code=status.HTTP_403_FORBIDDEN) else: logger.info(f"[LiveSession Recorded File] Allowing unauthenticated recording registration for room_slug={room_slug}") try: session = course.live_sessions.latest('-started_at') except CourseLiveSession.DoesNotExist: logger.warning(f"[LiveSession Recorded File] No active session found - course_id={course_id}") raise AppAPIException({'message': 'No live session found for this course.'}, status_code=status.HTTP_404_NOT_FOUND) logger.info(f"[LiveSession Recorded File] Latest session found - session_id={session.id} course_id={course_id}") logger.info(f"[LiveSession Recorded File] Request data: {request.data}") serializer = self.get_serializer(data=request.data) if not serializer.is_valid(): logger.error(f"[LiveSession Recorded File] Validation errors: {serializer.errors}") raise AppAPIException(serializer.errors, status_code=status.HTTP_400_BAD_REQUEST) recording = LiveSessionRecording.objects.create( session=session, file=serializer.validated_data['file'], title=serializer.validated_data.get('title') or f"{session.subject} Recording", recording_type=serializer.validated_data.get('recording_type', 'video'), file_time=serializer.validated_data.get('file_time'), ) logger.info(f"[LiveSession Recorded File] Recording created successfully - recording_id={recording.id} session_id={session.id}") return Response({ 'id': recording.id, 'session_id': session.id, 'title': recording.title, 'file': request.build_absolute_uri(recording.file.url), 'recording_type': recording.recording_type, 'file_time': recording.file_time, 'is_active': recording.is_active, }, status=status.HTTP_201_CREATED) class CourseLiveSessionSetRecordingTitleAPIView(GenericAPIView): permission_classes = [AllowAny] authentication_classes = [] @swagger_auto_schema( operation_description="Set the recording title for the active live session", tags=["Imam-Javad - Course"], request_body=openapi.Schema( type=openapi.TYPE_OBJECT, required=['room_id', 'title'], properties={ 'room_id': openapi.Schema(type=openapi.TYPE_STRING, description='Room ID'), 'title': openapi.Schema(type=openapi.TYPE_STRING, description='Custom Recording Title'), } ), responses={ 200: openapi.Response( description="Recording title updated successfully" ) } ) def post(self, request, *args, **kwargs): room_id = request.data.get('room_id') title = request.data.get('title') if not room_id or not title: raise AppAPIException({'message': 'room_id and title are required.'}, status_code=status.HTTP_400_BAD_REQUEST) title = title.strip() if not title: raise AppAPIException({'message': 'title cannot be empty.'}, status_code=status.HTTP_400_BAD_REQUEST) try: session = CourseLiveSession.objects.get(room_id=room_id, ended_at__isnull=True) except CourseLiveSession.DoesNotExist: raise AppAPIException({'message': 'Active session not found.'}, status_code=status.HTTP_404_NOT_FOUND) session.recording_title = title session.subject = title session.save(update_fields=['recording_title', 'subject', 'updated_at']) sync_session_recording_titles(session) logger.info(f"[LiveSession Title] Set recording title for room_id={room_id} to '{title}'") return Response({'success': True, 'message': 'Recording title updated successfully.'}, status=status.HTTP_200_OK)