app.py

import chainlit as cl
import os
import google.generativeai as genai
from dotenv import load_dotenv

# Load environment variables
load_dotenv()

# Configure Gemini
GOOGLE_API_KEY = os.getenv("GOOGLE_API_KEY")
if not GOOGLE_API_KEY:
    raise ValueError("GOOGLE_API_KEY not found in .env file")

genai.configure(api_key=GOOGLE_API_KEY)

# Initialize the Gemini Flash model
model = genai.GenerativeModel('gemini-2.0-flash')

@cl.on_chat_start
async def start_chat():
    await cl.Message(
        content="Hello! I'm a chatbot powered by Gemini Flash. How can I help you today?"
    ).send()

@cl.on_message
async def main(message: cl.Message):
    # Generate response using Gemini
    response = model.generate_content(message.content)
    
    # Send response
    await cl.Message(
        content=response.text
    ).send()