app.py

import gradio as gr
import google.generativeai as genai
import os

# Configure Gemini API
API_KEY = os.getenv("GOOGLE_API_KEY")  # Retrieved from Hugging Face Spaces Secrets
genai.configure(api_key=API_KEY)
model = genai.GenerativeModel("gemini-2.0-flash")
chat = model.start_chat()

# Send initial instruction to the model
initial_message = (
    "Hey, I'm using you as a therapist to help people who are feeling sad feel better. "
    "I want you to improve the user's mental health and make them feel good about themselves, "
    "sort of like a supportive friend. Keep your responses short, concise, and make them feel like they matter. "
    "Do not directly guide them to a suicide prevention hotline, as it will be mentioned on my website already. "
    "Just be there to listen. Start the conversation by saying 'Hi, how are you doing today?'"
)
chat.send_message(initial_message)

# Chat function for Gradio
def chat_function(message, history):
    # Transform Gradio history to Gemini format
    if history:
        for msg in history:
            chat.send_message(msg["content"])  # Send user and assistant messages from history
    
    # Send user message and get response
    response = chat.send_message(message)
    return response.text

# Create Gradio interface
with gr.Blocks() as demo:
    gr.Markdown("# VoiceAI: Your Supportive Chatbot")
    gr.Markdown("I'm here to listen and help you feel better. You matter! If you're having suicidal thoughts or feelings please call: 988")
    chatbot = gr.ChatInterface(
        fn=chat_function,
        chatbot=gr.Chatbot(height=500, show_copy_button=True, type="messages"),
        title="Chat with VoiceAI",
        description="A supportive chatbot to lift your spirits. Type 'exit' to close the chat.",
        submit_btn="Send"
    )

# Launch the app
if __name__ == "__main__":
    demo.launch(share=True)