simple gui chat, add base files

pages/chat.py

@@ -1,16 +1,44 @@
 import streamlit as st
+import random
+import time
 
-st.title("Chat")
 
-# Create a placeholder for the chat history
-chat_history = st.empty()
+# Streamed response emulator
+def response_generator():
+    response = random.choice(
+        [
+            "Hello there! How can I assist you today?",
+            "Hi, human! Is there anything I can help you with?",
+            "Do you need help?",
+        ]
+    )
+    for word in response.split():
+        yield word + " "
+        time.sleep(0.05)
 
-# Create a text input for the user's message
-user_message = st.text_input("Type your message here", "")
 
-# Simulate a response from the chatbot (replace this with your RAG model later)
-if user_message:
-    response = f"Response: {user_message.upper()}"
+st.title("FAQ chat")
+st.write('chat with our FAQ bot')
 
-    # Update the chat history placeholder
-    chat_history.markdown(f"**User:** {user_message}\n\n**Bot:** {response}")
+# Initialize chat history
+if "messages" not in st.session_state:
+    st.session_state.messages = []
+
+# Display chat messages from history on app rerun
+for message in st.session_state.messages:
+    with st.chat_message(message["role"]):
+        st.markdown(message["content"])
+
+# Accept user input
+if prompt := st.chat_input("What is up?"):
+    # Add user message to chat history
+    st.session_state.messages.append({"role": "user", "content": prompt})
+    # Display user message in chat message container
+    with st.chat_message("user"):
+        st.markdown(prompt)
+
+    # Display assistant response in chat message container
+    with st.chat_message("assistant"):
+        response = st.write_stream(response_generator())
+    # Add assistant response to chat history
+    st.session_state.messages.append({"role": "assistant", "content": response})