app.py

import streamlit as st
import os
from groq import Groq

# Load API key from environment variable
api_key = os.getenv("GROQ_API_KEY")

# Initialize Groq client with the secret API key
client = Groq(api_key=api_key)

# Streamlit page config
st.set_page_config(page_title="Groq Chatbot", page_icon="🤖")
st.title("🤖 Groq Chatbot (LLaMA3-70B)")

# Initialize chat history in session state
if "messages" not in st.session_state:
    st.session_state.messages = []

# Display previous chat messages
for msg in st.session_state.messages:
    st.chat_message(msg["role"]).markdown(msg["content"])

# User input
prompt = st.chat_input("Type your message...")

if prompt:
    # Append user message
    st.session_state.messages.append({"role": "user", "content": prompt})
    st.chat_message("user").markdown(prompt)

    # Get response from Groq API
    with st.spinner("Thinking..."):
        try:
            response = client.chat.completions.create(
                model="llama3-70b-8192",
                messages=[{"role": m["role"], "content": m["content"]} for m in st.session_state.messages],
            )
            reply = response.choices[0].message.content
        except Exception as e:
            reply = f"⚠️ Error: {str(e)}"

    # Append and display assistant reply
    st.session_state.messages.append({"role": "assistant", "content": reply})
    st.chat_message("assistant").markdown(reply)