import json
import os
import logging
from config import DATA_DIR

FILE = os.path.join(DATA_DIR, 'voice_tuning.json')

def _load() -> dict:
    if not os.path.exists(FILE):
        return {}
    try:
        with open(FILE, 'r', encoding='utf-8') as f:
            return json.load(f)
    except Exception as _friday_exc:
        logging.getLogger(__name__).debug('suppressed optional failure', exc_info=_friday_exc)
        return {}

def _save(data: dict):
    os.makedirs(os.path.dirname(FILE), exist_ok=True)
    with open(FILE, 'w', encoding='utf-8') as f:
        json.dump(data, f, indent=4)

def update_voice_tuning(bot_name: str, params: dict) -> None:
    """Save granular voice tuning settings per assistant."""
    data = _load()
    bot_name = bot_name.lower()
    if bot_name not in data:
        data[bot_name] = {}
        
    data[bot_name].update(params)
    _save(data)

def get_voice_tuning(bot_name: str) -> dict:
    """Retrieve granular voice tuning settings per assistant."""
    data = _load()
    return data.get(bot_name.lower(), {})