"""Redis client module."""

from typing import AsyncGenerator

from redis.asyncio import Redis, from_url

from app.core.config import settings

_redis_pool: Redis | None = None


async def get_redis() -> Redis:
    """Get global Redis client instance."""
    global _redis_pool
    if _redis_pool is None:
        _redis_pool = from_url(settings.redis_url, encoding="utf-8", decode_responses=True)
    return _redis_pool


async def close_redis():
    """Close Redis connection."""
    global _redis_pool
    if _redis_pool:
        await _redis_pool.close()
        _redis_pool = None