Update app.py

app.py

@@ -1,5 +1,5 @@
 import streamlit as st
-
+from langchain_core import AIMessage, HumanMessage
 
 
 def get_response(user_input):
@@ -14,6 +14,10 @@ def get_response(user_input):
 st.set_page_config(page_title= "Chat with Websites", page_icon="🤖")
 
 st.title("Chat with Websites")
+chat_history = [ 
+    AIMessage(content = "Hello, I am a bot. How can I help you"),
+    
+]
 
 
 #sidebar
@@ -23,14 +27,15 @@ with st.sidebar:
     openai_apikey = st.text_input("Enter your OpenAI API key")
 
 user_query = st.chat_input("Type your message here...")
-    if user_query is not None and user_query !="":
-        response = get_response(user_query)
+if user_query is not None and user_query !="":
+    response = get_response(user_query)
+    chat_history.append(HumanMessage(content=user_query))
             
-        with st.chat_message("Human"):
-            st.write(user_query)
+     with st.chat_message("Human"):
+        st.write(user_query)
     
-        with st.chat_message("AI"):
-            st.write(response)
+    with st.chat_message("AI"):
+        st.write(response)