app.py

import streamlit as st
import os
from dotenv import load_dotenv
from langchain_google_genai import ChatGoogleGenerativeAI
from langchain.agents import load_tools, initialize_agent, AgentType

# Load environment variables
load_dotenv()

# Retrieve API keys from environment variables
GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
SERPAPI_API_KEY = os.getenv("SERPAPI_API_KEY")

# Initialize the language model
llm = ChatGoogleGenerativeAI(model="gemini-2.0-flash", google_api_key=GOOGLE_API_KEY)

# Load the SerpAPI tool
tools = load_tools(["serpapi"], llm=llm, serpapi_api_key=SERPAPI_API_KEY)

# Initialize the agent
agent = initialize_agent(
    tools,
    llm,
    agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION,
    verbose=False
)

# Streamlit UI
st.title("Stream line AI 💬")

# User input
user_question = st.text_input("Enter your question:")

if st.button("Submit") and user_question:
    with st.spinner("Processing your question..."):
        try:
            response = agent.run(user_question)
            st.success(response)
        except Exception as e:
            st.error(f"An error occurred: {e}")