.NET平台下使用Redis

using DBI.SaaS.Web.Models.Args;
using Rafy;
using StackExchange.Redis;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

namespace DBI.SaaS.Web.Common
{
    /// <summary>
    /// Redis帮助类
    /// </summary>
    public class RedisHelper
    {
        private static ConnectionMultiplexer _connectionMultiplexer;

        /// <summary>
        /// 连接多工
        /// </summary>
        public static ConnectionMultiplexer ConnectionMultiplexer
        {
            get
            {
                if (_connectionMultiplexer == null||_connectionMultiplexer.IsConnected==false)
                {
                    var server = ConfigurationHelper.GetAppSettingOrDefault("RedisUri");
                    var port = ConfigurationHelper.GetAppSettingOrDefault("RedisPort");
                    var configString = $"{server}:{port}";
                    var config = ConfigurationOptions.Parse(configString);
                    config.Password = ConfigurationHelper.GetAppSettingOrDefault("RedisPassword");
                    _connectionMultiplexer = ConnectionMultiplexer.Connect(config);
                }
                return _connectionMultiplexer;
            }
        }

        public const string CustomerInfoHeaderKey = "RCIHK";

        /// <summary>
        /// 添加Redis数据库中key下的值
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="customer"></param>
        public static void AddCustomerInfoToKey(string redisKey, PMSCustomerInfo customer)
        {
            customer.SetTime = DateTime.Now.ToString();
            customer.Identity = string.Empty;//RedisHelper.GetNextCustomerIdentity(redisKey);
            customer.IsUsed = "false";
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            var value = RedisHelper.ConvertRedisValueFromCustomerInfo(customer);
            rdb.ListRightPush(redisKey, value);
        }

        private static string GetNextCustomerIdentity(string redisKey)
        {
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            var value = rdb.ListRightPop(redisKey).ToString();
            if (string.IsNullOrEmpty(value)) return "1";
            rdb.ListRightPush(redisKey, value);
            var valueArray = value.Split(',');
            if (valueArray.Count() != 10) return "1";
            var identity = Convert.ToInt64(valueArray[9]) + 1;
            return identity.ToString();
        }

        /// <summary>
        /// 将当前推送客户信息转为Redis值
        /// </summary>
        /// <param name="customer"></param>
        /// <returns></returns>
        private static string ConvertRedisValueFromCustomerInfo(PMSCustomerInfo customer)
        {
            var sb = new StringBuilder();
            sb.Append(customer.CustomerAddressPhone).Append(",");
            sb.Append(customer.CustomerBankAccount).Append(",");
            sb.Append(customer.CustomerName).Append(",");
            sb.Append(customer.CustomerTaxCode).Append(",");
            sb.Append(customer.ALipayId).Append(",");
            sb.Append(customer.WechatId).Append(",");
            sb.Append(customer.PhoneNumber).Append(",");
            sb.Append(customer.SetTime).Append(",");
            sb.Append(customer.IsUsed).Append(",");
            sb.Append(customer.Identity);
            return sb.ToString();
        }

        /// <summary>
        /// 根据key获取客户信息
        /// </summary>
        /// <param name="redisKey"></param>
        /// <returns></returns>
        public static List<PMSCustomerInfo> GetCustomerListByKey(string redisKey)
        {
            var customerList = new List<PMSCustomerInfo>();
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            //RedisHelper.CheckCustomerExpire(redisKey);
            var values = rdb.ListRange(redisKey).ToStringArray().ToList();
            foreach (var value in values)
            {
                var valueArray = value.Split(',');
                if (valueArray.Count() != 10) continue;
                var customer = new PMSCustomerInfo
                {
                    CustomerAddressPhone = valueArray[0],
                    CustomerBankAccount = valueArray[1],
                    CustomerName = valueArray[2],
                    CustomerTaxCode = valueArray[3],
                    ALipayId = valueArray[4],
                    WechatId = valueArray[5],
                    PhoneNumber = valueArray[6],
                    SetTime = valueArray[7],
                    IsUsed = valueArray[8],
                    Identity = valueArray[9]
                };
                customerList.Add(customer);
            }
            var returnList = customerList.OrderByDescending(e =>Convert.ToDateTime(e.SetTime)).ToList();
            return returnList;
        }

        private static void CheckCustomerExpire(string redisKey)
        {
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            while (true)
            {
                var value = rdb.ListLeftPop(redisKey).ToString();
                if (string.IsNullOrEmpty(value)) return;
                var valueArray = value.Split(',');
                if (valueArray.Count() != 10) continue;
                var setTime = Convert.ToDateTime(valueArray[7]);
                if (setTime.AddDays(2) > DateTime.Now)
                {
                    rdb.ListLeftPush(redisKey, value);
                    break;
                }
            }
        }

        public static void UpdateCustomerIsUsed(PMSCustomerInfo customer, string redisKey)
        {
            var list = new List<string>();
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            while (true)
            {
                var redisValue = rdb.ListLeftPop(redisKey).ToString();
                if (string.IsNullOrEmpty(redisValue)) break;
                var customerValue = ConvertRedisValueFromCustomerInfo(customer);
                if (customerValue == redisValue)
                {
                    customer.IsUsed = "true";
                    redisValue = ConvertRedisValueFromCustomerInfo(customer);
                }
                list.Add(redisValue);
            }
            for (int i = list.Count - 1; i >= 0; i--)
            {
                rdb.ListLeftPush(redisKey, list[i]);
            }
        }

        public static void RemoveCustomerFromRedis(PMSCustomerInfo customer, string redisKey)
        {
            var list = new List<string>();
            var rdb = RedisHelper.ConnectionMultiplexer.GetDatabase();
            while (true)
            {
                var redisValue = rdb.ListLeftPop(redisKey).ToString();
                if (string.IsNullOrEmpty(redisValue)) break;
                var customerValue = ConvertRedisValueFromCustomerInfo(customer);
                if (customerValue == redisValue) break;
                list.Add(redisValue);
            }
            for (int i = list.Count - 1; i >= 0; i--)
            {
                rdb.ListLeftPush(redisKey, list[i]);
            }
        }
    }
}