Upload app.py

app.py

@@ -110,6 +110,9 @@ def load_pdf(files):
     global vector_store
     documents = []    
 
+    if not files:
+        return """Choose at least one PDF file, then click the "Load and Index Documents" button."""
+
     # Load the PDFs
     for file in files:
         loader = PyPDFLoader(file.name)
@@ -134,13 +137,9 @@ def load_pdf(files):
     if hasattr(vector_store, 'index') and hasattr(vector_store.index, 'ntotal'):
         num_indexed_vectors = vector_store.index.ntotal
     
-    num_documents_in_docstore = 0
-    if hasattr(vector_store, 'docstore') and hasattr(vector_store.docstore, 'lc_kwargs'):
-        num_documents_in_docstore = len(vector_store.docstore._dict)
-
     status_message = (
         f"PDF(s) indexed successfully!\n"
-        f"Total chunks processed: {len(texts)}, Vectors indexed: {num_indexed_vectors}, Documents: {num_documents_in_docstore}\n"
+        f"Total chunks processed: {len(texts)}, Vectors indexed: {num_indexed_vectors}.\n"
        )
 
     return status_message