feat: add message suggestion

app.py

@@ -77,6 +77,12 @@ def on_click_callback():
             # insert_chat_history_articles(conn, history_id, llm_response["source_documents"])
 
 
+def exemple_message_callback_button(args):
+    st.session_state.human_prompt = args
+    send_message_callback()
+    st.session_state.human_prompt = ""
+
+
 def clear_history():
     st.session_state.history.clear()
     st.session_state.token_count = 0
@@ -86,6 +92,12 @@ def clear_history():
 load_css()
 initialize_session_state()
 
+exemples = [
+    "Who has published influential research on quantum computing?",
+    "List any prominent authors in the field of artificial intelligence ethics?",
+    "Who are the leading experts on climate change mitigation strategies?",
+]
+
 with chat_column:
     chat_placeholder = st.container()
     prompt_placeholder = st.form("chat-form", clear_on_submit=True)
@@ -125,6 +137,16 @@ with chat_column:
             on_click=on_click_callback,
         )
 
+    if st.session_state.token_count == 0:
+        information_placeholder.markdown("### Test me !")
+        for idx_exemple, exemple in enumerate(exemples):
+            information_placeholder.button(
+                exemple,
+                key=f"{idx_exemple}_button",
+                on_click=exemple_message_callback_button,
+                args=(exemple,)
+            )
+
     st.button(":new: Start a new conversation", on_click=clear_history, type="secondary")
 
     information_placeholder.caption(