Update app.py

app.py

@@ -107,8 +107,9 @@ def set_DRlink(dr_link: str):
     print("DR Link set")    
     #chat_history = []
     #history = []
-    
-    dr_link_url = 'https://repository.lib.cuhk.edu.hk/en/islandora/object/cuhk%3A'+ dr_link + '/datastream/PDF/'   
+        
+    #dr_link_url = 'https://repository.lib.cuhk.edu.hk/en/islandora/object/cuhk%3A'+ dr_link + '/datastream/PDF/'   
+    dr_link_url = dr_link_url1 + dr_link + dr_link_url2
     #app.DR_LINK = dr_link        
     hdr = { 'User-Agent' : user_agent }        
 
@@ -250,7 +251,7 @@ def build_qa_chain(collection_name, vector_db, file: str):
     # vincent fix InvalidCollectionException 20250212
     #collection_name = create_collection_name(list_file_path[0])
     #collection_name = file.name 
-    collection_name = "pdf_docs"
+    collection_name = "pdf_docs_"+file.name[-10:]
     
     vector_db = Chroma.from_documents(
             documents=chunked_documents,
@@ -363,7 +364,7 @@ def render_file(file):
 
 def purge_chat_and_render_first(file):
     print("purge_chat_and_render_first")
-    print("file class= "+ str(type(file)))
+    #print("file class= "+ str(type(file)))
     # Purges the previous chat session so that the bot has no concept of previous documents
     chat_history = []
     history = []