using Admin.Core.Common;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using StackExchange.Redis;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Admin.Core.Extensions
{
    public class RedisBasketRepository : IRedisBasketRepository
    {
        private readonly ILogger<RedisBasketRepository> _logger;
        private readonly ConnectionMultiplexer _redis;
        private readonly IDatabase _database;

        public RedisBasketRepository(ILogger<RedisBasketRepository> logger, ConnectionMultiplexer redis)
        {
            _logger = logger;
            _redis = redis;
            _database = redis.GetDatabase();
        }

        private IServer GetServer()
        {
            var endpoint = _redis.GetEndPoints();
            return _redis.GetServer(endpoint.First());
        }

        private IServer GetServer(System.Net.EndPoint endpoint)
        {
            return _redis.GetServer(endpoint);
        }

        /// <summary>
        /// 获取服务基础信息
        /// </summary>
        public RedisBaseView GetBaseInfo()
        {
            var server = GetServer();

            RedisBaseView view = new RedisBaseView()
            {
                redis_version = server.Version.ToString(),
                redis_mode = server.ServerType.ToString(),
                connected_clients = "",
                uptime_in_days = "",
                used_cpu_user_children = "",
                maxmemory_human = "",
                aof_enabled = "",
                rdb_last_bgsave_status = "",
                dbSize = "",
                instantaneous_input_kbps = "",
                instantaneous_output_kbps = "",
            };
            return view;
        }

        /// <summary>
        /// 缓存监控
        /// </summary>
        public List<RedisKeyView> GetAllKes()
        {
            List<RedisKeyView> redisKeys = new List<RedisKeyView>();
            foreach (var endPoint in _redis.GetEndPoints())
            {
                var server = _redis.GetServer(endPoint);

                foreach (var key in server.Keys())
                {
                    RedisKeyView redisKey = new RedisKeyView()
                    {
                        Server = server.ToString(),
                        Point = endPoint.ToString(),
                        Key = key
                    };
                    redisKeys.Add(redisKey);
                }

            }
            return redisKeys;
        }

        /// <summary>
        /// 节点状态
        /// </summary>
        /// <returns></returns>
        public List<PointStatus> GetPointStatus()
        {
            //var ServerSelectionStrategy = _redis.OperationCount;
            List<PointStatus> statuses = new List<PointStatus>();
            var endpoint = _redis.GetEndPoints();
            foreach (var item in endpoint)
            {
                PointStatus status = new PointStatus()
                {
                    Point = item.ToString(),
                    Normal = GetServer(item).IsConnected
                };
                statuses.Add(status);
            }
            return statuses;
        }

        /// <summary>
        /// 全部清除
        /// </summary>
        /// <returns></returns>
        public async Task Clear()
        {
            foreach (var endPoint in _redis.GetEndPoints())
            {
                var server = GetServer();
                foreach (var key in server.Keys())
                {
                    await _database.KeyDeleteAsync(key);
                }
            }
        }

        /// <summary>
        /// 判断是否存在
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<bool> Exist(string key)
        {
            return await _database.KeyExistsAsync(key);
        }

        /// <summary>
        /// 获取 Reids 缓存值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<string> GetValue(string key)
        {
            return await _database.StringGetAsync(key);
        }

        /// <summary>
        /// 移除某一个缓存值
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<bool> Remove(string key)
        {
            return await _database.KeyDeleteAsync(key);
        }

        /// <summary>
        /// 保存-默认系统过期时间
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="timeSpan">缓存过期时间，单位：分钟</param>
        /// <returns></returns>
        public async Task<bool> SetStr(string key, string value, int timeSpan = 0)
        {
            value = value.IsNotEmptyOrNull() ? value : string.Empty;
            // 缓存过期时间：分钟
            var cacheTimeOut = Appsettings.app(new string[] { "AppSettings", "CacheTimeOut" }).ObjToInt();
            var cacheTime = TimeSpan.FromSeconds(timeSpan == 0 ? cacheTimeOut * 60 : timeSpan * 60);
            //序列化，将object值生成RedisValue
            return await _database.StringSetAsync(key, value, cacheTime);
        }

        /// <summary>
        /// 保存-永不过期
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public async Task<bool> SetStrL(string key, string value)
        {
            value = value.IsNotEmptyOrNull() ? value : string.Empty;
            //序列化，将object值生成RedisValue
            return await _database.StringSetAsync(key, value);
        }

        /// <summary>
        /// 保存-默认系统过期时间
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="timeSpan">缓存过期时间，单位：分钟</param>
        /// <returns></returns>
        public async Task<bool> SetObj(string key, object value, int timeSpan = 0)
        {
            value = value.IsNotEmptyOrNull() ? value : string.Empty;
            // 缓存过期时间：分钟
            var cacheTimeOut = Appsettings.app(new string[] { "AppSettings", "CacheTimeOut" }).ObjToInt();
            var cacheTime = TimeSpan.FromSeconds(timeSpan == 0 ? cacheTimeOut * 60 : timeSpan * 60);
            //序列化，将object值生成RedisValue
            return await _database.StringSetAsync(key, SerializeHelper.Serialize(value), cacheTime);
        }

        /// <summary>
        /// 保存-永不过期
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <returns></returns>
        public async Task<bool> SetObjL(string key, object value)
        {
            value = value.IsNotEmptyOrNull() ? value : string.Empty;
            //序列化，将object值生成RedisValue
            return await _database.StringSetAsync(key, SerializeHelper.Serialize(value));
        }

        /// <summary>
        /// 获取值，并序列化
        /// </summary>
        /// <typeparam name="TEntity"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<TEntity> Get<TEntity>(string key)
        {
            var value = await _database.StringGetAsync(key);
            if (value.HasValue)
            {
                //需要用的反序列化，将Redis存储的Byte[]，进行反序列化
                return SerializeHelper.Deserialize<TEntity>(value);
            }
            else
            {
                return default(TEntity);
            }
        }

        /// <summary>
        /// 根据key获取RedisValue
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="redisKey"></param>
        /// <returns></returns>
        public async Task<RedisValue[]> ListRangeAsync(string redisKey)
        {
            return await _database.ListRangeAsync(redisKey);
        }

        /// <summary>
        /// 在列表头部插入值。如果键不存在，先创建再插入值
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="redisValue"></param>
        /// <returns></returns>
        public async Task<long> ListLeftPushAsync(string redisKey, string redisValue, int db = -1)
        {
            return await _database.ListLeftPushAsync(redisKey, redisValue);
        }

        /// <summary>
        /// 在列表尾部插入值。如果键不存在，先创建再插入值
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="redisValue"></param>
        /// <returns></returns>
        public async Task<long> ListRightPushAsync(string redisKey, string redisValue, int db = -1)
        {
            return await _database.ListRightPushAsync(redisKey, redisValue);
        }

        /// <summary>
        /// 在列表尾部插入数组集合。如果键不存在，先创建再插入值
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="redisValue"></param>
        /// <returns></returns>
        public async Task<long> ListRightPushAsync(string redisKey, IEnumerable<string> redisValue, int db = -1)
        {
            var redislist = new List<RedisValue>();
            foreach (var item in redisValue)
            {
                redislist.Add(item);
            }
            return await _database.ListRightPushAsync(redisKey, redislist.ToArray());
        }

        /// <summary>
        /// 移除并返回存储在该键列表的第一个元素  反序列化
        /// </summary>
        /// <param name="redisKey"></param>
        /// <returns></returns>
        public async Task<T> ListLeftPopAsync<T>(string redisKey, int db = -1) where T : class
        {
            return JsonConvert.DeserializeObject<T>(await _database.ListLeftPopAsync(redisKey));
        }

        /// <summary>
        /// 移除并返回存储在该键列表的最后一个元素   反序列化
        /// 只能是对象集合
        /// </summary>
        /// <param name="redisKey"></param>
        /// <returns></returns>
        public async Task<T> ListRightPopAsync<T>(string redisKey, int db = -1) where T : class
        {
            return JsonConvert.DeserializeObject<T>(await _database.ListRightPopAsync(redisKey));
        }

        /// <summary>
        /// 移除并返回存储在该键列表的第一个元素   
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="db"></param>
        /// <returns></returns>
        public async Task<string> ListLeftPopAsync(string redisKey, int db = -1)
        {
            return await _database.ListLeftPopAsync(redisKey);
        }

        /// <summary>
        /// 移除并返回存储在该键列表的最后一个元素   
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="redisKey"></param>
        /// <param name="db"></param>
        /// <returns></returns>
        public async Task<string> ListRightPopAsync(string redisKey, int db = -1)
        {
            return await _database.ListRightPopAsync(redisKey);
        }

        /// <summary>
        /// 列表长度
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="db"></param>
        /// <returns></returns>
        public async Task<long> ListLengthAsync(string redisKey, int db = -1)
        {
            return await _database.ListLengthAsync(redisKey);
        }

        /// <summary>
        /// 返回在该列表上键所对应的元素
        /// </summary>
        /// <param name="redisKey"></param>
        /// <returns></returns>
        public async Task<IEnumerable<string>> ListRangeAsync(string redisKey, int db = -1)
        {
            var result = await _database.ListRangeAsync(redisKey);
            return result.Select(o => o.ToString());
        }

        /// <summary>
        /// 根据索引获取指定位置数据
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="start"></param>
        /// <param name="stop"></param>
        /// <param name="db"></param>
        /// <returns></returns>
        public async Task<IEnumerable<string>> ListRangeAsync(string redisKey, int start, int stop, int db = -1)
        {
            var result = await _database.ListRangeAsync(redisKey, start, stop);
            return result.Select(o => o.ToString());
        }

        /// <summary>
        /// 删除List中的元素 并返回删除的个数
        /// </summary>
        /// <param name="redisKey">key</param>
        /// <param name="redisValue">元素</param>
        /// <param name="type">大于零 : 从表头开始向表尾搜索，小于零 : 从表尾开始向表头搜索，等于零：移除表中所有与 VALUE 相等的值</param>
        /// <param name="db"></param>
        /// <returns></returns>
        public async Task<long> ListDelRangeAsync(string redisKey, string redisValue, long type = 0, int db = -1)
        {
            return await _database.ListRemoveAsync(redisKey, redisValue, type);
        }

        /// <summary>
        /// 清空List
        /// </summary>
        /// <param name="redisKey"></param>
        /// <param name="db"></param>
        public async Task ListClearAsync(string redisKey, int db = -1)
        {
            await _database.ListTrimAsync(redisKey, 1, 0);
        }
    }
}