app.py

import gradio as gr
from openai import OpenAI

system_prompt = """
    You are a voice bot representing Krishnavamshi Thumma. When responding to questions, answer as if you are:

    - A Generative AI and Data Engineering enthusiast with 1.5+ years of experience in data pipelines, automation, and scalable solutions
    - Currently working as a Data Engineer at Wishkarma in Hyderabad, where you've optimized ETL pipelines processing 10K+ records daily and developed an image-based product similarity search engine using CLIP-ViT-L/14
    - Previously worked as a Data Engineer Intern at DeepThought Growth Management System, where you processed 700+ data records and mentored 400+ students
    - Skilled in Python, SQL, JavaScript (Node.js), OpenAI GPT-4o, LangChain, MongoDB Vector Search, FAISS, Apache Airflow, AWS Lambda, and FastAPI
    - Experienced in building GenAI products including conversational AI chatbots, RAG pipelines, and AI-powered tools
    - A Computer Science graduate from Neil Gogte Institute of Technology with a CGPA of 7.5/10
    - Passionate about solving real-world problems at the intersection of AI and software engineering

    Answer questions about your background, experience, projects, and skills based on this resume. Keep responses professional but engaging (2-3 sentences max for most questions).
    """

def chat_with_openai(user_input, history, api_key):
    if not api_key:
        return history, "❌ Please enter your OpenAI API key."
    
    try:
        client = OpenAI(api_key=api_key)
        
        # Build messages from history
        messages = [{"role": "system", "content": system_prompt}]
        for entry in history:
            messages.append({"role": "user", "content": entry[0]})
            messages.append({"role": "assistant", "content": entry[1]})
        messages.append({"role": "user", "content": user_input})

        # Get response from OpenAI
        response = client.chat.completions.create(
            model="gpt-4o",
            messages=messages,
            temperature=0.7
        )
        
        bot_reply = response.choices[0].message.content
        history.append((user_input, bot_reply))
        return history, history
        
    except Exception as e:
        return history, f"❌ Error: {str(e)}"

with gr.Blocks(title="Voice Bot: Krishnavamshi Thumma", js="./custom.js") as demo:
    gr.Markdown("## 🎙️ Krishnavamshi Thumma - Voice Assistant")
    
    # Add custom CSS
    gr.HTML("""
    <style>
        #chatBox {
            height: 60vh;
            overflow-y: auto;
            padding: 20px;
            border-radius: 10px;
            background: #f9f9f9;
        }
        .message {
            margin: 10px 0;
            padding: 12px;
            border-radius: 8px;
        }
        .user {
            background: #e3f2fd;
            text-align: right;
        }
        .bot {
            background: #f5f5f5;
        }
        #micButton {
            width: 100%;
            padding: 12px;
            font-size: 1.2em;
        }
    </style>
    """)
    
    api_key = gr.Textbox(label="🔐 OpenAI API Key", type="password", elem_id="apiKeyInput")
    chatbot = gr.Chatbot(elem_id="chatBox", type="messages")
    state = gr.State([])
    
    with gr.Row():
        mic_btn = gr.Button("🎤 Speak", elem_id="micButton")
        clear_btn = gr.Button("🗑️ Clear Chat")
    
    # Hidden components for JS communication
    voice_input = gr.Textbox(visible=False, elem_id="voiceInput")
    
    # Event handlers
    voice_input.change(
        chat_with_openai, 
        [voice_input, state, api_key], 
        [chatbot, state]
    )
    
    # Corrected JS trigger syntax
    mic_btn.click(None, [], [], js="startListening")
    clear_btn.click(lambda: ([], []), None, [chatbot, state])

demo.launch()