using Coldairarrow.Business.MDS;
using Coldairarrow.Entity.DTO;
using Coldairarrow.Entity.Enum;
using Coldairarrow.Entity.HuiYan;
using Coldairarrow.Entity.MDS;
using Coldairarrow.IBusiness;
using Coldairarrow.Util;
using EFCore.Sharding;
using LinqKit;
using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Dynamic.Core;
using System.Linq.Expressions;
using System.Threading.Tasks;

namespace Coldairarrow.Business.HuiYan
{
    public class pricetasklogBusiness : BaseBusiness<pricetasklog>, IpricetasklogBusiness, ITransientDependency
    {
        IuserBusiness _iuserBusiness;
        IteamitemsBusiness _iteamitemsBusiness;
        readonly IOperator _operator;
        public pricetasklogBusiness(IDbAccessor db, IuserBusiness iuserBusiness, IteamitemsBusiness iteamitemsBusiness,
            IOperator @operator)
        : base(db)
        {
            _operator = @operator;
            _iuserBusiness = iuserBusiness;
            _iteamitemsBusiness = iteamitemsBusiness;
        }

        #region 外部接口

        public async Task<PageResult<pricetasklog>> GetDataListAsync(PageInput<ConditionDTO> input)
        {
            var q = GetIQueryable();
            var where = LinqHelper.True<pricetasklog>();
            var search = input.Search;

            //筛选
            if (!search.Condition.IsNullOrEmpty() && !search.Keyword.IsNullOrEmpty())
            {
                var newWhere = DynamicExpressionParser.ParseLambda<pricetasklog, bool>(
                    ParsingConfig.Default, false, $@"{search.Condition}.Contains(@0)", search.Keyword);
                where = where.And(newWhere);
            }

            return await q.Where(where).GetPageResultAsync(input);
        }

        public async Task<pricetasklog> GetTheDataAsync(string id)
        {
            return await GetEntityAsync(id);
        }

        public async Task AddDataAsync(pricetasklog data)
        {
            await InsertAsync(data);
        }

        public async Task UpdateDataAsync(pricetasklog data)
        {
            await UpdateAsync(data);
        }

        public async Task DeleteDataAsync(List<string> ids)
        {
            await DeleteAsync(ids);
        }

        #endregion


        public AjaxResult GetTaskCount()
        {
            var list = Db.GetIQueryable<pricetasklog>().Where(c => c.UserId == _operator.UserId).Select(c => c.State);

            return Success(list);
        }


        public PageResult<TeamitemDto> GetItems(PageInput<ConditionDTO> input,string keyWord)
        {
            Expression<Func<teamitems, items, pricetasklog, TeamitemDto>> select = (a, b, c) => new TeamitemDto
            {
                GoodsId = b.GoodsId,
                HasFilter = b.HasFilter,
                Platform = b.Platform,
                GoodsUrl = b.GoodsUrl,
                PriceTaskId=c.Id,
                PriceTaskState = (int)c.State,
                Extensions = Newtonsoft.Json.JsonConvert.DeserializeObject<List<TeamItemExtension>>(a.ExtensionJson)
            };

            var search = input.Search;
            select = select.BuildExtendSelectExpre();

            var q_titem = Db.GetIQueryable<teamitems>();
            var q = from a in q_titem.AsExpandable()
                    join b in Db.GetIQueryable<items>() on a.ItemId equals b.Id into ab
                    from ba in ab.DefaultIfEmpty()
                    join c in Db.GetIQueryable<pricetasklog>() on a.Id equals c.TeamItemId into ac
                    from bb in ac.DefaultIfEmpty()
                    select @select.Invoke(a, ba, bb);

            //查询对应状态
            var where = LinqHelper.True<TeamitemDto>().And(c => c.PriceTaskUserId == _operator.UserId);

            int state = int.Parse(search.Keyword);

            where = where.And(c => c.PriceTaskState == state);

            where = where.AndIf(!string.IsNullOrEmpty(keyWord), d => d.Title.Contains(keyWord));

            var list = q.Where(where).GetPageResultAsync(input).Result;

            return list;

        }

        /// <summary>
        /// 获取当天可执行数量
        /// </summary>
        /// <returns></returns>
        public AjaxResult GetMyCount()
        {
            var nowCount = Db.GetIQueryable<pricetasklog>().Count(c => c.CreateTime.Date == DateTime.Now.Date || c.CreateTime == DateTime.MinValue && c.UserId == _operator.UserId);

            var user = Db.GetIQueryable<user>().FirstOrDefault(c => c.Id == _operator.UserId);

            return Success(new { MaxCount = user.MaxPriceTaskCount, Count = user.MaxPriceTaskCount - nowCount });
        }

        public AjaxResult DayTaskSet()
        {

            CheckIsTimeOut();

            var users = _iuserBusiness.GetPriceTaskUserList().ToList();

            Expression<Func<user, pricetasklog, PricetaskUser>> select = (a, b) => new PricetaskUser()
            {
                UserName = a.UserName,
                MaxTaskCount = a.MaxPriceTaskCount,
                Uid = a.Id
            };

            select = select.BuildExtendSelectExpre();

            var q_User = Db.GetIQueryable<pricetasklog>().Where(c => c.CreateTime.Date == DateTime.Now.Date || c.CreateTime == DateTime.MinValue);

            var q = from a in users
                    join b in q_User on a.Id equals b.UserId into ab
                    from b in ab.DefaultIfEmpty()
                    select @select.Invoke(a, b);


            var userList = q.GroupBy(c => c.Uid).Where(c => c.Count() < c.FirstOrDefault()?.MaxTaskCount).Select(c => new PriceUserCount(c.Key, c.Count(), c.Max(c => c.MaxTaskCount) ?? 30)).ToList();


            var teamItemList = Db.GetIQueryable<teamitems>().Where(c => c.State == (int)TeamItemState.已发布比价 && string.IsNullOrEmpty(c.PriceTaskUserId)).ToList();



            var result = Db.RunTransaction(() =>
            {

                List<pricetasklog> pricetasklogs = new List<pricetasklog>();

                teamItemList.ForEach(teamItem =>
                {
                    var user = userList.Where(c => c.Count < c.MaxCount).OrderBy(c => c.Count).FirstOrDefault();

                    if (user == null)
                    {
                        return;
                    }

                    teamItem.PriceTaskUserId = user.UserId;

                    user.Count += 1;

                    pricetasklogs.Add(new pricetasklog()
                    {
                        CreateTime = DateTime.Now,
                        Id = IdHelper.GetId(),
                        CreatorId = _operator.UserId,
                        Deleted = false,
                        ItemId = teamItem.ItemId,
                        UserId = user.UserId,
                        State = PriceTaskState.待比价,
                        TeamItemId = teamItem.Id
                    });

                });

                int row = Db.Insert(pricetasklogs);
                if (row <= 0)
                {
                    throw new Exception("执行定时任务分配错误！");
                }
                row = Db.Update(teamItemList, new List<string>() { "PriceTaskUserId" });
                if (row <= 0)
                {
                    throw new Exception("执行定时任务分配更新任务信息错误！");
                }
            });


            if (!result.Success)
            {
                DingHelper.DingApiHelper.Main.SendNotify("齐越慧眼比价系统任务分配异常！");
            }

            return Success("任务分配成功！");
        }


        public AjaxResult CheckIsTimeOut() 
        {
            try
            {
                var needUpdates = Db.GetIQueryable<pricetasklog>().Where(c => c.State == PriceTaskState.已比价 && c.WorkDate != null && (DateTime.Now - c.WorkDate.Value).TotalHours >= 48).ToList();

                if (needUpdates.Count > 0)
                {
                    _iteamitemsBusiness.UpdateTaskSuccess(needUpdates);
                }
            }
            catch (Exception ex)
            { 
                
            }

            return Success();
        }

        public AjaxResult CanelTask(string teamItemId)
        {
            var teamItem = Db.GetIQueryable<teamitems>().FirstOrDefault(c => c.Id == teamItemId && c.TeamId == _operator.TeamId);

            if (teamItem == null)
            {
                return Error("任务不存在！");
            }


            var result = Db.RunTransaction(() =>
              {
                  var row = Db.Update<teamitems>(c => c.Id == teamItem.Id, item =>
                  {
                      item.PriceTaskUserId = null;
                      item.State = (int)TeamItemState.待比价;
                  });

                  if (row <= 0)
                  {
                      throw new Exception("操作失败");
                  }

                  Db.Delete<pricetasklog>(c => c.UserId == teamItem.PriceTaskUserId && c.TeamItemId == teamItem.Id);
              });


            if (result.Success)
            {
                return Success("操作成功");
            }
            else
            {
                return Error(result.ex.Message);
            }
        }



        /// <summary>
        /// 添加比价任务
        /// </summary>
        /// <returns></returns>
        public AjaxResult AddTask(string teamItemId)
        {
            var teamItem = Db.GetIQueryable<teamitems>().FirstOrDefault(c => c.Id == teamItemId && c.TeamId == _operator.TeamId);

            if (teamItem == null)
            {
                return Error("任务不存在！");
            }

            var users = _iuserBusiness.GetPriceTaskUserList().ToList();

            Expression<Func<user, pricetasklog, PricetaskUser>> select = (a, b) => new PricetaskUser()
            {
                UserName = a.UserName,
                MaxTaskCount = a.MaxPriceTaskCount,
                Uid = a.Id
            };

            select = select.BuildExtendSelectExpre();

            var q_User = Db.GetIQueryable<pricetasklog>().Where(c => c.CreateTime.Date == DateTime.Now.Date || c.CreateTime == DateTime.MinValue);

            var q = from a in users
                    join b in q_User on a.Id equals b.UserId into ab
                    from b in ab.DefaultIfEmpty()
                    select @select.Invoke(a, b);

            //获取当日可分配的一个用户
            var user = q.GroupBy(c => c.Uid).Where(c => c.Count() < c.FirstOrDefault()?.MaxTaskCount).Select(c => new { Id = c.Key, Count = c.Count() }).OrderBy(c => c.Count).FirstOrDefault();

            if (user == null)
            {

                DingHelper.DingApiHelper.Main.SendNotify("齐越慧眼比价系统任务量已达上限！");

                //钉钉推送
              //  return Error("当前任务量已超过任务池可用任务量！");
            }


            var result = Db.RunTransaction(() =>
            {
                int row = Db.Update<teamitems>(c => c.Id == teamItem.Id, (item) =>
                {
                    if (user != null)
                    {
                        item.PriceTaskUserId = user.Id;
                    }
                    else {
                        item.PriceTaskUserId = null;
                    }

                    item.State = (int)TeamItemState.已发布比价;
                });

                if (row <= 0)
                    throw new Exception("系统繁忙！");

                if (user != null)
                {
                    row = Db.Insert(new pricetasklog()
                    {
                        CreateTime = DateTime.Now,
                        Id = IdHelper.GetId(),
                        CreatorId = _operator.UserId,
                        Deleted = false,
                        ItemId = teamItem.ItemId,
                        UserId = user.Id,
                        State = PriceTaskState.待比价,
                        TeamItemId = teamItem.Id
                    });

                    if (row <= 0)
                        throw new Exception("系统任务繁忙！");
                }

            });

            if (result.Success)
            {
                return Success("发布任务成功！");
            }

            return Error(result.ex.Message);
        }




        public AjaxResult SetState(string id, int state)
        {

            var task = Db.GetIQueryable<pricetasklog>().FirstOrDefault(c => c.Id == id && c.UserId == _operator.UserId);

            if (task == null)
            {
                return Error("该任务已取消或不存在！");
            }

            var taskState = (PriceTaskState)state;

            if (taskState == PriceTaskState.已比价)
            {
                var result = Db.RunTransaction(() =>
                {
                    int row = Db.Update<pricetasklog>(c => c.Id == task.Id, item =>
                    {
                        item.State = taskState;
                        item.WorkDate = DateTime.Now;
                    });

                    if (row <= 0)
                    {
                        throw new Exception("操作失败！");
                    }


                    row = Db.Update<teamitems>(c => c.Id == task.TeamItemId, item =>
                    {
                        item.State = (int)TeamItemState.已比价;
                    });

                    if (row <= 0)
                    {
                        throw new Exception("操作失败！");
                    }


                });

                if (result.Success)
                {
                    return Success("更新成功");
                }
            }
            return Error("操作失败！");
        }

        #region 私有成员

        #endregion
    }
}