services/stt_service.py

import requests
from config import GROQ_API_KEY, GROQ_STT_MODEL

def speech_to_text(audio_file: str) -> str:
    if not GROQ_API_KEY:
        raise RuntimeError("GROQ_API_KEY is not set in config")

    url = "https://api.groq.ai/openai/v1/audio/transcriptions"

    headers = {
        "Authorization": f"Bearer {GROQ_API_KEY}"
    }

    with open(audio_file, "rb") as f:
        files = {
            "file": (audio_file, f, "audio/wav")
        }
        data = {
            "model": GROQ_STT_MODEL
        }

        response = requests.post(url, headers=headers, data=data, files=files)
        response.raise_for_status()

        result = response.json()
        return result.get("text", "")