import boto3
import sounddevice as sd
import numpy as np
import base64
from config import MODEL_ID, REGION, SAMPLE_RATE

def start_nova_stream(session_id):
    client = boto3.client("bedrock-runtime", region_name=REGION)
    stream = client.invoke_model_with_bidirectional_stream(
        modelId=MODEL_ID,
        body=b'',
        contentType="application/vnd.amazon.eventstream",
        accept="application/vnd.amazon.eventstream"
    )
    # NOTE: Full real-time stream logic omitted for brevity
    print(f"Started Nova stream for session {session_id}")