using System.Collections.Generic;
using Library;
using System.Linq;

namespace MySystem
{
    public class RedisDbconn
    {
        public readonly static RedisDbconn Instance = new RedisDbconn();
        public static CSRedis.CSRedisClient csredis;
        private RedisDbconn()
        {
        }

        #region 设置单个字段
        public bool Set(string key, object value)
        {
            return csredis.Set(key, value);
            // return false;
        }
        #endregion

        #region 整数累加
        public long AddInt(string key, long value = 1)
        {
            return csredis.IncrBy(key, value);
            // return 0;
        }
        #endregion

        #region 数字累加
        public decimal AddNumber(string key, decimal value = 1)
        {
            return csredis.IncrByFloat(key, value);
            // return 0;
        }
        #endregion

        #region 获取单个字段
        public T Get<T>(string key)
        {
            return csredis.Get<T>(key);
        }
        #endregion

        #region 设置散列字段
        public bool HSet(string key, string field, object value)
        {
            return csredis.HSet(key, field, value);
            // return false;
        }
        #endregion

        #region 散列整数累加
        public long HAddInt(string key, string field, long value = 1)
        {
            return csredis.HIncrBy(key, field, value);
            // return 0;
        }
        #endregion

        #region 散列数字累加
        public decimal HAddNumber(string key, string field, decimal value = 1)
        {
            return csredis.HIncrByFloat(key, field, value);
            // return 0;
        }
        #endregion

        #region 获取散列元素
        public T HGet<T>(string key, string field)
        {
            return csredis.HGet<T>(key, field);
        }
        #endregion

        #region 获取散列所有元素
        public Dictionary<string, T> HGetAll<T>(string key)
        {
            return csredis.HGetAll<T>(key);
        }
        #endregion

        #region 添加列表对象
        public long AddList(string key, object value)
        {
            return csredis.LPush(key, value);
            // return 0;
        }
        public long AddRightList(string key, object value)
        {
            return csredis.RPush(key, value);
            // return 0;
        }
        public long AddList(string key, object[] value)
        {
            return csredis.LPush(key, value);
            // return 0;
        }
        public T RPop<T>(string key)
        {
            return csredis.RPop<T>(key);
        }
        #endregion

        #region 添加集合对象
        public long SAdd(string key, object value)
        {
            return csredis.SAdd(key, value);
            // return 0;
        }
        public long SAdd(string key, object[] value)
        {
            return csredis.SAdd(key, value);
            // return 0;
        }
        #endregion

        #region 获取集合对象
        public T[] SGetList<T>(string key)
        {
            return csredis.SMembers<T>(key);
        }
        #endregion

        #region 修改列表对象
        public bool SetList(string key, int index, object value)
        {
            long itemindex = csredis.LLen(key) - index - 1;
            return csredis.LSet(key, itemindex, value);
            // return false;
        }
        #endregion

        #region 获取列表
        public List<T> GetList<T>(string key, int pageNum = 1, int pageSize = 10)
        {
            int start = (pageNum - 1) * pageSize;
            int end = start + pageSize - 1;
            T[] list = csredis.LRange<T>(key, start, end);
            return list.ToList();
        }
        #endregion

        #region 删除列表元素
        public void DelList<T>(string key, T item)
        {
            List<T> oldlist = GetList<T>(key, 1, 10000000);
            oldlist.Remove(item);
            Clear(key);
            AddList(key, oldlist.ToArray());
        }
        #endregion

        #region 添加排序列表对象
        public long AddSort(string key, object value, decimal score)
        {
            return csredis.ZAdd(key, (score, value));
            // return 0;
        }
        #endregion

        #region 获取排序列表
        public List<T> GetSort<T>(string key, int pageNum = 1, int pageSize = 10)
        {
            int start = (pageNum - 1) * pageSize;
            int end = start + pageSize;
            string[] list = csredis.ZRangeByScore(key, start, end);
            List<T> lists = new List<T>();
            foreach (string record in list)
            { 
                lists.Add(Newtonsoft.Json.JsonConvert.DeserializeObject<T>(record));
            }
            return lists;
        }
        public List<T> GetSortDesc<T>(string key, int pageNum = 1, int pageSize = 10)
        {
            int start = (pageNum - 1) * pageSize;
            int end = start + pageSize;
            string[] list = csredis.ZRevRangeByScore(key, start, end);
            List<T> lists = new List<T>();
            foreach (string record in list)
            { 
                lists.Add(Newtonsoft.Json.JsonConvert.DeserializeObject<T>(record));
            }
            return lists;
        }
        #endregion

        public bool Remove(string key, long start, long end)
        {
            return csredis.LTrim(key, start, end);
        }

        public bool RemoveTop(string key, long count)
        {
            return RedisDbconn.Instance.Remove(key, count, RedisDbconn.Instance.Count(key) - 1);;
        }

        public long Count(string key)
        {
            return csredis.LLen(key);
        }

        public void Clear(string pattern)
        {
            string[] keys = csredis.Keys(pattern);
            csredis.Del(keys);
        }

        public string[] GetKeys(string pattern)
        { 
            string[] keys = csredis.Keys(pattern);
            return keys;
        }

        public void SetExpire(string key, int expire)
        { 
            csredis.Expire(key, expire); //秒为单位
        }

        #region 判断Key是否存在

        public bool CheckKey(string key)
        {
            if (csredis.Exists(key))
            {
                return true;
            }
            return false;
        }

        #endregion
    }
}