Update app.py

app.py

@@ -86,14 +86,9 @@ def load_environment():
     genai.configure(api_key=os.getenv("GOOGLE_API_KEY"))
 
 def preload_modtran_document():
-    with open("MODTRAN 6 User's Manual.pdf", "rb") as f:
-        file_obj = io.BytesIO(f.read())
-        file_obj.name = "MODTRAN 6 User's Manual.pdf"
-        uploaded_files = [file_obj]
-
-    raw_text = get_uploaded_text(uploaded_files)
-    text_chunks = get_text_chunks(raw_text)
-    vectorstore = get_vectorstore(text_chunks)
+    global vectorstore_global
+    embeddings = GeminiEmbeddings()
+    vectorstore = FAISS.load_local("modtran_vectorstore", embeddings)
     set_global_vectorstore(vectorstore)
     st.session_state.chat_ready = True
 
@@ -268,6 +263,10 @@ def main():
     if not st.session_state.chat_ready:
         with st.spinner("Loading MODTRAN document..."):
             preload_modtran_document()
+            raw_text = get_uploaded_text(uploaded_files)
+            text_chunks = get_text_chunks(raw_text)
+            st.session_state.vectorstore = get_vectorstore(text_chunks)  
+            set_global_vectorstore(st.session_state.vectorstore)         
             st.session_state.chat_ready = True
             st.success("MODTRAN User Manual loaded successfully!")