using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using HZQR.Common;

namespace TableDataService.RedisHelp
{
    public class Redis
    {
        #region 方法 -> string类型缓存操作
        /// <summary>
        /// 写入redis
        /// </summary>
        /// <param name="dbNum">redis用下标指定数据库</param>
        /// <param name="key">redis中的key</param>
        /// <param name="model">数据实体对象</param>
        /// <param name="validDay">有效期，按天</param>
        public static void StringSet(int dbNum, string key, object model, int? validDay = null)
        {
            RedisHelper redisDb = new RedisHelper(dbNum);//从redis中取
            //写入redis，后面的逻辑判断都从redis中取
            TimeSpan? ts = null;
            if (validDay != null)
            {
                DateTime dt1 = DateTime.Now;
                DateTime dt2 = dt1.AddDays(validDay.TryParseToInt());//redis中存放的有效期
                ts = dt2 - dt1;

            }
            redisDb.StringSet(key, model, ts);//键值对写入redis
        }

        public static T StringGet<T>(int dbNum, string key)
        {
            RedisHelper redisDb = new RedisHelper(dbNum);//从redis中取
            if (redisDb.KeyExists(key))//判断redis缓存中是否存在key
            {
                return redisDb.StringGet<T>(key);//根据key取出redis中的缓存
            }
            return default(T);
        }
        #endregion

        #region 方法 -> hash类型缓存操作
        /// <summary>
        /// 写入redis
        /// </summary>
        /// <param name="dbNum">redis用下标指定数据库</param>
        /// <param name="key">redis中的key</param>
        /// <param name="model">数据实体对象</param>
        /// <param name="validDay">有效期，按天</param>
        public static void HashSet(int dbNum, string key, string dataKey, object model)
        {
            RedisHelper redisDb = new RedisHelper(dbNum);//从redis中取
            //写入redis，后面的逻辑判断都从redis中取
            redisDb.HashSet(key, dataKey, model);
        }

        public static T HashGet<T>(int dbNum, string key, string dataKey)
        {
            RedisHelper redisDb = new RedisHelper(dbNum);//从redis中取
            if (redisDb.HashExists(key, dataKey))//判断redis缓存中是否存在key
            {
                return redisDb.HashGet<T>(key, dataKey);//根据key取出redis中的缓存
            }
            return default(T);
        }
        #endregion
    }
}