app.py

import gradio as gr
from faster_whisper import WhisperModel
from groq import Groq
from gtts import gTTS
import os

print("Loading Whisper...")
whisper_model = WhisperModel("base", compute_type="int8")

# Use HF secret instead of Colab cell
client = Groq(api_key=os.environ["GROQ_API_KEY"])

print("Ready")

def voice_ai(audio_path):
    try:
        if audio_path is None:
            return None, "", ""

        # ---------------- STT
        segments, _ = whisper_model.transcribe(audio_path)
        user_text = "".join([seg.text for seg in segments])
        print("User:", user_text)

        # ---------------- LLM
        completion = client.chat.completions.create(
            model="llama-3.1-8b-instant",
            messages=[{"role": "user", "content": user_text}]
        )

        reply = completion.choices[0].message.content
        print("AI:", reply)

        # ---------------- TTS
        output_file = "response.mp3"
        tts = gTTS(reply)
        tts.save(output_file)

        return output_file, user_text, reply

    except Exception as e:
        print("ERROR:", e)
        return None, "error", str(e)

with gr.Blocks() as demo:
    gr.Markdown("# 🎙 Voice AI")

    mic = gr.Audio(type="filepath")
    btn = gr.Button("Generate")

    out_audio = gr.Audio()
    user_box = gr.Textbox(label="You said")
    ai_box = gr.Textbox(label="AI reply")

    btn.click(
        voice_ai,
        inputs=mic,
        outputs=[out_audio, user_box, ai_box]
    )

demo.launch()