added sample questions

app.py

@@ -1,13 +1,16 @@
 
-from omegaconf import OmegaConf
-import streamlit as st
 import os
 from PIL import Image
 import sys
+
+from omegaconf import OmegaConf
 import requests
 from typing import Tuple
 from bs4 import BeautifulSoup
 
+import streamlit as st
+from streamlit_pills import pills
+
 from dotenv import load_dotenv
 load_dotenv(override=True)
 
@@ -149,6 +152,7 @@ def initialize_agent(_cfg):
     - Never discuss politics, and always respond politely.
     - This is important: when you include links to Hacker News stories, use the actual title of the story as the link's displayed text.
       Don't use text like "Source" which doesn't tell the user what the link is about.
+    - Don't include external links in your responses unless the user asks for them.
     - Give slight preference to newer stories when answering questions.
     """
 
@@ -169,12 +173,22 @@ def initialize_agent(_cfg):
 def toggle_logs():
     st.session_state.show_logs = not st.session_state.show_logs
 
+def show_example_questions():        
+    if len(st.session_state.example_messages) > 0 and st.session_state.first_turn:
+        selected_example = pills("Queries to Try:", st.session_state.example_messages, index=None)
+        if selected_example:
+            st.session_state.ex_prompt = selected_example
+            st.session_state.first_turn = False
+            return True
+    return False
+
 def launch_bot():
     def reset():
         st.session_state.messages = [{"role": "assistant", "content": initial_prompt, "avatar": "🦖"}]
         st.session_state.thinking_message = "Agent at work..."
         st.session_state.log_messages = []
         st.session_state.prompt = None
+        st.session_state.first_turn = True
         st.session_state.show_logs = False
 
     st.set_page_config(page_title="Hacker News Bot", layout="wide")
@@ -183,8 +197,12 @@ def launch_bot():
             'customer_id': str(os.environ['VECTARA_CUSTOMER_ID']),
             'corpus_id': str(os.environ['VECTARA_CORPUS_ID']),
             'api_key': str(os.environ['VECTARA_API_KEY']),
+            'examples': os.environ.get('QUERY_EXAMPLES', None)
         })
         st.session_state.cfg = cfg
+        st.session_state.ex_prompt = None
+        example_messages = [example.strip() for example in cfg.examples.split(",")] if cfg.examples else []
+        st.session_state.example_messages = [em for em in example_messages if len(em)>0]
         reset()
 
     cfg = st.session_state.cfg
@@ -219,8 +237,18 @@ def launch_bot():
         with st.chat_message(message["role"], avatar=message["avatar"]):
             st.write(message["content"])
 
+    example_container = st.empty()
+    with example_container:
+        if show_example_questions():
+            example_container.empty()
+            st.rerun()
+
     # User-provided prompt
-    if prompt := st.chat_input():
+    if st.session_state.ex_prompt:
+        prompt = st.session_state.ex_prompt
+    else:
+        prompt = st.chat_input()
+    if prompt:
         st.session_state.messages.append({"role": "user", "content": prompt, "avatar": '🧑‍💻'})
         st.session_state.prompt = prompt  # Save the prompt in session state
         st.session_state.log_messages = []
@@ -228,7 +256,8 @@ def launch_bot():
         with st.chat_message("user", avatar='🧑‍💻'):
             print(f"Starting new question: {prompt}\n")
             st.write(prompt)
-        
+        st.session_state.ex_prompt = None
+    
     # Generate a new response if last message is not from assistant
     if st.session_state.prompt:
         with st.chat_message("assistant", avatar='🤖'):
@@ -238,7 +267,9 @@ def launch_bot():
             message = {"role": "assistant", "content": res, "avatar": '🤖'}
             st.session_state.messages.append(message)
             st.markdown(res)
-            st.session_state.prompt = None
+        st.session_state.ex_prompt = None
+        st.session_state.prompt = None
+        st.rerun()
 
     log_placeholder = st.empty()
     with log_placeholder.container():

requirements.txt

@@ -1,5 +1,6 @@
 omegaconf==2.3.0
-streamlit==1.32.2
 pydantic==1.10.15
 python-dotenv==1.0.1
+streamlit==1.32.2
+streamlit_pills==0.3.0
 git+https://{GITHUB_TOKEN}@github.com/vectara/vectara-agent.git