app.py

import streamlit as st
from dotenv import load_dotenv
from langchain_openai import ChatOpenAI
import os
load_dotenv("apiroute.env")
api_key=os.getenv("OPENAI_API_KEY")
api_base=os.getenv("OPENAI_API_BASE")

llm=ChatOpenAI(model_name="google/gemma-3n-e2b-it:free",temperature=0.7)
# Streamlit UI
st.set_page_config(page_title="Chatbot", layout="centered")
st.title("💬 Chat with me")

# Chat history session state
if "history" not in st.session_state:
    st.session_state.history = []


#Then place the prompt box at the bottom
user_input = st.text_input("Ask me anything:", key="input")

# Handle input
if user_input:
    # Add user message to history
    st.session_state.history.append(("You", user_input))

    # Get response from the model
    response = llm.invoke(user_input)

    # Add bot response to history
    st.session_state.history.append(("Bot", response.content))

    # Clear the input box after submission
    st.experimental_rerun()