from app.config import settings
import redis.asyncio as aioredis
from redis.asyncio import ConnectionPool

_pool = None


async def get_redis():
    global _pool
    if _pool is None:
        _pool = ConnectionPool.from_url(settings.REDIS_URL, max_connections=20)
    return aioredis.Redis(connection_pool=_pool)


async def close_redis():
    global _pool
    if _pool:
        await _pool.disconnect()
        _pool = None