import redis
import json
from base import Config, logger

class RedisClient:
    def __init__(self):
        self.logger = logger
        try:
            self.client = redis.StrictRedis(
                host=Config().REDIS_HOST,
                port=Config().REDIS_PORT,
                password=Config().REDIS_PASSWORD,
                db=Config().REDIS_DB,
                decode_responses=True
            )
            self.logger.info("Redis 连接成功")
        except redis.RedisError as e:
            self.logger.error(f"Redis 连接失败: {e}")
            raise

    def set_data(self, key, value):
        try:
            self.client.set(key, json.dumps(value))
            self.logger.info(f"存储数据到 Redis: {key}")
        except redis.RedisError as e:
            self.logger.error(f"Redis 存储失败: {e}")

    def get_data(self, key):
        try:
            data = self.client.get(key)
            return json.loads(data) if data else None
        except redis.RedisError as e:
            self.logger.error(f"Redis 获取失败: {e}")
            return None

    def get_answer(self, query):
        try:
            answer = self.client.get(f"answer:{query}")
            if answer:
                self.logger.info(f"从 Redis 获取答案: {query}")
                return answer
            return None
        except redis.RedisError as e:
            self.logger.error(f"Redis 查询失败: {e}")
            return None