namespace ZhiYi.Core.Application.Services.Implements
{
    public class GroupAppService : IGroupAppService
    {
        private readonly IMapper _mapper;
        private readonly SqlSugarClient _client;
        private readonly IConfiguration _configuration;
        private readonly ILogger<GroupAppService> _logger;
        private readonly IDatabase _redis;
        private readonly IConnectionClientManagerService _connectionClientManager;
        private readonly SubscribeAndPublishService _subscribeAndPublishService;
        public GroupAppService(
            IMapper mapper, 
            IConfiguration configuration, 
            ILogger<GroupAppService> logger, 
            IConnectionMultiplexer redis, 
            IConnectionClientManagerService connectionClientManager,
            SubscribeAndPublishService subscribeAndPublishService
            )
        {
            _mapper = mapper;
            _configuration = configuration;
            string connStr = _configuration.GetSection("ConnectionStrings:SqlConnection").Value;
            if (_client == null)
            {
                _client = SugarClientInit.Instance.GetDdClient(connStr);
            }
            _logger = logger;
            _redis = redis.GetDatabase();
            _connectionClientManager = connectionClientManager;
            _subscribeAndPublishService = subscribeAndPublishService;
        }

        /// <summary>
        /// 创建组
        /// </summary>
        /// <returns></returns>
        public async Task CreateAsync(GroupCreationDto input)
        {
            var group = _mapper.Map<ZhiYi_Group>(input);
            group.Id = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
            group.CreateTime = DateTime.Now;
            try
            {
                //清空对应用户的组缓存
                await _redis.KeyDeleteAsync($"group:{input.UserId}");
                await _client.Insertable(group).ExecuteCommandAsync();
            }
            catch(Exception ex)
            {
                _logger.LogError("创建失败:{message}", ex.Message);
                throw new Exception("创建失败");
            }
        }

        /// <summary>
        /// 批量导入分组关系（分组ID导入）
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task CreateBatchAsync(GroupCreationBatchDto input)
        {
            try
            {
                //分组去重 保留未导入过的分组
                var originalGroupIds = await _client.Queryable<ZhiYi_Group_Relation>()
                    .Where(x => x.Owner == input.UserId && input.Ids.Contains(x.Original_GroupId))
                    .Select(x => x.Original_GroupId)
                    .Distinct()
                    .ToArrayAsync();
                if (originalGroupIds.Any())
                {
                    var ids = input.Ids.ToList();
                    var idsNewList = new List<long>();
                    ids.ForEach(x =>
                    {
                        if (!originalGroupIds.Contains(x))
                            idsNewList.Add(x);
                    });
                    input.Ids = idsNewList.ToArray();
                }
                if (input.Ids.Any())
                {
                    //当前分组列表
                    /*var groupList = await _client.Queryable<ZhiYi_Group>()
                        .Where(x => input.Ids.Contains(x.Id))
                        .ToListAsync();*/
                    await _client.BeginTranAsync();
                    var groupRelationList = new List<ZhiYi_Group_Relation>();
                    //导入目标分组列表
                    input.Ids.ToList().ForEach(x =>
                    {
                        //分组关系建立
                        var groupRelation = new ZhiYi_Group_Relation
                        {
                            Id = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
                            Original_GroupId = x,
                            Owner = input.UserId
                        };
                        //新分组ID 其他基本信息同步
                        /*x.Id = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
                        x.CreateTime = DateTime.Now;
                        x.CreateType = "shared";
                        x.UserId = input.UserId;*/
                        groupRelationList.Add(groupRelation);
                    });
                    //await _client.Insertable(groupList).ExecuteCommandAsync();
                    if (groupRelationList.Count > 0)
                        await _client.Insertable(groupRelationList).ExecuteCommandAsync();
                    else
                        throw new Exception("分组关系已存在，请勿重复导入");
                        //当前分组列表对应服务器列表
                        /*
                                            var serverList = await _client.Queryable<ZhiYi_Server>()
                                                .Where(x => input.Ids.Contains(x.GroupId))
                                                .ToListAsync();
                                            var serverRelationList = new List<Zhiyi_Server_Relation>();
                                            //导入目标服务器列表
                                            serverList.ForEach(x =>
                                            {
                                                //服务器关系建立
                                                var serverRelation = new Zhiyi_Server_Relation
                                                {
                                                    Id = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
                                                    Original_ServerId = x.Id
                                                };
                                                //新服务器ID 其他基本信息同步
                                                x.Id = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
                                                serverRelation.Current_ServerId = x.Id;
                                                x.CreateTime = DateTime.Now;
                                                x.CreateType = "shared";
                                            });
                                            await _client.Insertable(serverList).ExecuteCommandAsync();
                                            if (serverRelationList.Count > 0)
                                                await _client.Insertable(serverRelationList).ExecuteCommandAsync();
                        */
                        //目标分组和目标服务器缓存清空
                        await _redis.KeyDeleteAsync($"group:{input.UserId}");
                    foreach (var id in input.Ids)
                        await _redis.KeyDeleteAsync($"server:{id}");
                    await _client.CommitTranAsync();
                }
            }
            catch(Exception ex)
            {
                await _client.RollbackTranAsync();
                _logger.LogError("批量导入分组失败:{message}", ex.Message);
                throw new Exception("批量导入分组失败");
            }
            finally { _client.Dispose(); }

        }

        /// <summary>
        /// 删除组
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task DeleteAsync(GroupDeleteDto input)
        {
            try
            {
                await _client.BeginTranAsync();
                
                //验证是否为创建人
                var exists = await _client.Queryable<ZhiYi_Group>().AnyAsync(x => x.CreateBy == input.UserId && x.Id == input.Id);
                if (!exists)
                    throw new Exception("仅能删除自己的分组");
                //清空对应用户的分组缓存
                await _redis.KeyDeleteAsync($"group:{input.UserId}");
                //删除对应用户的分组
                await _client.Deleteable<ZhiYi_Group>().Where(x => x.Id == input.Id).ExecuteCommandAsync();

                var groupRelationList = await _client.Queryable<ZhiYi_Group_Relation>()
                    .Where(x => x.Original_GroupId == input.Id)
                    .ToListAsync();
                if(groupRelationList.Count > 0)
                {
                    //清空分享出去对应用户的分组缓存
                    var userIds = groupRelationList.Select(x => x.Owner).Distinct().ToList();
                    userIds.ForEach(async x =>
                    {
                        await _redis.KeyDeleteAsync($"group:{x}");
                    });
                    //删除分组对应关系
                    await _client.Deleteable(groupRelationList).ExecuteCommandAsync();

                    /*var newGroupIds = groupRelationList.Select(x => x.Current_GroupId).ToArray();
                    //删除分享出去对应用户的分组
                    await _client.Deleteable<ZhiYi_Group>().Where(x => newGroupIds.Contains(x.Id)).ExecuteCommandAsync();*/

                    //删除后，通知使用分享码导入的人员已删除，接收通知后刷新分组列表
                    _ = Task.Run(() =>
                    {
                        groupRelationList.ForEach(x =>
                        {
                            //await _connectionClientManager.SendAsync(x.Owner.ToString(), JsonConvert.SerializeObject(new MessageDto { Type = "通知", Content = "分组列表已删除" }));
                            _subscribeAndPublishService.Publish(JsonConvert.SerializeObject(new MessageDto { Type = "通知", Content = "分组列表已删除" }), x.Owner.ToString());
                        });
                    });
                }

                await _client.CommitTranAsync();
            }
            catch(Exception ex)
            {
                await _client.RollbackTranAsync();
                _logger.LogError("删除分组失败:{message}", ex.Message);
                throw new Exception("删除分组失败");
            }
            finally { _client.Dispose(); }
        }

        /// <summary>
        /// 获取组列表
        /// </summary>
        /// <param name="userid">账号ID</param>
        /// <returns></returns>
        public async Task<AppResponse<List<ZhiYi_Group>>> GetListAsync(long userid)
        {
            //缓存获取
            var groupValue = await _redis.StringGetAsync($"group:{userid}");
            if (groupValue.HasValue)
            {
                var groupDto = JsonConvert.DeserializeObject<List<ZhiYi_Group>>(groupValue.ToString());
                return new AppResponse<List<ZhiYi_Group>> { Code = 200, Data = groupDto };
            }
            try
            {
                //数据库读
                //个人分组
                var originalGroupQueryable = _client.Queryable<ZhiYi_Group>()
                    .Where(x => x.UserId == userid);
                //分享列表分组
                var sharedGroupQueryable = _client.Queryable<ZhiYi_Group_Relation, ZhiYi_Group>((a, b) => a.Original_GroupId == b.Id)
                    .Where((a, b) => a.Owner == userid)
                    .Select((a, b) => b);
                var groupList = await _client.UnionAll(originalGroupQueryable, sharedGroupQueryable).ToListAsync();
                await _redis.StringSetAsync($"group:{userid}", JsonConvert.SerializeObject(groupList));
                return new AppResponse<List<ZhiYi_Group>> { Code = 200, Data = groupList };
            }
            catch(Exception ex)
            {
                _logger.LogError("查询组列表失败:{message}", ex.Message);
                throw new Exception("查询组列表失败");
            }
        }

        /// <summary>
        /// 更改组名
        /// </summary>
        /// <param name="input"></param>
        /// <returns></returns>
        public async Task UpdateAsync(GroupUpdationDto input)
        {
            input.TrimStringFields();
            //验证是否为创建人
            var exists = await _client.Queryable<ZhiYi_Group>().AnyAsync(x => x.CreateBy == input.UserId && x.Id == input.Id);
            if (!exists)
                throw new Exception("仅能修改自己的分组");
            try
            {
                await _client.BeginTranAsync();
                //清空对应用户的分组缓存
                await _redis.KeyDeleteAsync($"group:{input.UserId}");
                /*//指定行跟踪
                var group = await _client.Queryable<ZhiYi_Group>().FirstAsync(x => x.Id == input.Id);
                _client.Tracking(group);
                //更新实体列
                CustomerAppService.ConditionalMap(input, group);*/
                var group = _mapper.Map<ZhiYi_Group>(input);
                await _client.Updateable(group)
                    .SetColumns(x => x.GroupName == group.GroupName)
                    .Where(x => x.Id == group.Id)
                    .ExecuteCommandAsync();

                var groupRelationList = await _client.Queryable<ZhiYi_Group_Relation>()
                    .Where(x => x.Original_GroupId == input.Id)
                    .ToListAsync();
                if(groupRelationList.Count > 0)
                {
                    //清空分享出去对应用户的分组缓存
                    var userIds = groupRelationList.Select(x => x.Owner).Distinct().ToList();
                    userIds.ForEach(async x =>
                    {
                        await _redis.KeyDeleteAsync($"group:{x}");
                    });
                    /*var newGroupIds = groupRelationList.Select(x => x.Current_GroupId).ToArray();

                    await _client.Updateable<ZhiYi_Group>()
                        .SetColumns(x => x.GroupName == group.GroupName)
                        .Where(x => newGroupIds.Contains(x.Id))
                        .ExecuteCommandAsync();*/

                    //更新后，通知使用分享码导入的人员已更新，接收通知后刷新分组列表

                    _ = Task.Run(() =>
                    {
                        groupRelationList.ForEach( x =>
                        {
                            /*await _connectionClientManager.SendAsync(x.Owner.ToString(), JsonConvert.SerializeObject(new MessageDto { Type = "通知", Content = $"分组{input.GroupName}更新为{group.GroupName}" }));*/

                            _subscribeAndPublishService.Publish(JsonConvert.SerializeObject(new MessageDto { Type = "通知", Content = $"分组{input.GroupName}更新为{group.GroupName}" }), x.Owner.ToString());
                        });
                    });
                }

                await _client.CommitTranAsync();

            }
            catch(Exception ex)
            {
                await _client.RollbackTranAsync();
                _logger.LogError("修改分组信息失败:{message}", ex.Message);
                throw new Exception("修改分组信息失败");
            }
            finally { _client.Dispose(); }
        }
    }
}