last_message_time metadata fix

code/app.py

@@ -245,6 +245,8 @@ async def post_signin(request: Request):
         user_details.metadata["tokens_left"] = (
             TOKENS_LEFT  # set the number of tokens left for the new user
         )
+    if "last_message_time" not in user_details.metadata:
+        user_details.metadata["last_message_time"] = current_datetime
     if "all_time_tokens_allocated" not in user_details.metadata:
         user_details.metadata["all_time_tokens_allocated"] = ALL_TIME_TOKENS_ALLOCATED
     if "in_cooldown" not in user_details.metadata:

code/modules/config/config.yml

@@ -8,7 +8,7 @@ vectorstore:
   data_path: '../storage/data' # str
   url_file_path: '../storage/data/urls.txt' # str
   expand_urls: True # bool
-  db_option : 'FAISS' # str [FAISS, Chroma, RAGatouille, RAPTOR]
+  db_option : 'RAGatouille' # str [FAISS, Chroma, RAGatouille, RAPTOR]
   db_path : '../vectorstores' # str
   model : 'sentence-transformers/all-MiniLM-L6-v2' # str [sentence-transformers/all-MiniLM-L6-v2, text-embedding-ada-002']
   search_top_k : 3 # int