import asyncio
import fakeredis.aioredis

from logger import Log
from redis import asyncio as aioredis


class RedisDB:

    def __init__(self, host="127.0.0.1", port=6379, db=0, loop=None):
        Log.debug(f'获取Redis配置 [host]: {host}')
        Log.debug(f'获取Redis配置 [host]: {port}')
        Log.debug(f'获取Redis配置 [host]: {db}')
        self.client = aioredis.Redis(host=host, port=port, db=db)
        self.ttl = 600
        self.key_prefix = "paimon_bot"
        self._loop = loop
        if self._loop is None:
            self._loop = asyncio.get_event_loop()
        try:
            Log.info("正在尝试建立与Redis连接")
            self._loop.run_until_complete(self.ping())
        except (KeyboardInterrupt, SystemExit):
            pass
        except Exception as exc:
            Log.warning("尝试连接Redis失败，使用 fakeredis 模拟")
            self.client = fakeredis.aioredis.FakeRedis()
            self._loop.run_until_complete(self.ping())

    async def ping(self):
        if await self.client.ping():
            Log.info("连接Redis成功")
        else:
            Log.info("连接Redis失败")
            raise RuntimeError("连接Redis失败")

    async def close(self):
        await self.client.close()