Update modules/database/discourse_mongo_db.py

modules/database/discourse_mongo_db.py

@@ -70,22 +70,26 @@ def get_student_discourse_analysis(username, limit=10):
         logger.info(f"Recuperando análisis de discurso para {username}")
         
         collection = get_collection(COLLECTION_NAME)
-        if collection is not None:  # CORRECTO
+        if collection is None:
             logger.error("No se pudo obtener la colección")
             return []
             
         query = {"username": username}
         documents = list(collection.find(query).sort("timestamp", -1).limit(limit))
-        logger.info(f"Recuperados {len(documents)} documentos")
+        logger.info(f"Recuperados {len(documents)} documentos de análisis de discurso")
         
         # Decodificar gráficos para uso en la aplicación
         for doc in documents:
             for graph_key in ['graph1', 'graph2', 'combined_graph']:
                 if graph_key in doc and doc[graph_key]:
                     try:
-                        logger.info(f"Decodificando {graph_key} de base64 a bytes")
-                        doc[graph_key] = base64.b64decode(doc[graph_key])
-                        logger.info(f"{graph_key} decodificado correctamente")
+                        # Verificar si es string (base64) y decodificar
+                        if isinstance(doc[graph_key], str):
+                            logger.info(f"Decodificando {graph_key} de base64 a bytes")
+                            doc[graph_key] = base64.b64decode(doc[graph_key])
+                            logger.info(f"{graph_key} decodificado correctamente, tamaño: {len(doc[graph_key])} bytes")
+                        elif not isinstance(doc[graph_key], bytes):
+                            logger.warning(f"{graph_key} no es ni string ni bytes: {type(doc[graph_key])}")
                     except Exception as decode_error:
                         logger.error(f"Error decodificando {graph_key}: {str(decode_error)}")
                         doc[graph_key] = None