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

namespace Coldairarrow.Business.HuiYan
{
    public class itemlabelsBusiness : BaseBusiness<itemlabels>, IitemlabelsBusiness, ITransientDependency
    {
        IteamitemsBusiness iteamitemsBusiness;
        public itemlabelsBusiness(IDbAccessor db, IteamitemsBusiness _iteamitemsBusiness)
            : base(db)
        {
            iteamitemsBusiness = _iteamitemsBusiness;
        }

        #region 外部接口

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

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

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

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

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

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

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

        #endregion

        #region 私有成员

        #endregion


        public AjaxResult GetLabelByItemIds(List<string> ids, ItemPlatform platform)
        {
            Expression<Func<itemlabels, items, ItemlabelInfoDto>> select = (a, b) => new ItemlabelInfoDto
            {
                GoodsId = b.GoodsId,
                HasFilter = b.HasFilter,
                Platform = b.Platform
            };

            select = select.BuildExtendSelectExpre();

            var q_titem = GetIQueryable();
            var q = from a in q_titem.AsExpandable()
                    join b in Db.GetIQueryable<items>() on a.ItemsId equals b.Id into ab
                    from b in ab.DefaultIfEmpty()
                    select @select.Invoke(a, b);

            //查询这边还需要添加   （Teamid筛选，或者HasFilter=True） 的二选一查询
            var where = LinqHelper.True<ItemlabelInfoDto>().And(c => c.Platform == (int)platform && ids.Contains(c.GoodsId));

            //where = where.And(c => c.TeamId == "" || c.HasFilter ==true);

            var list = q.Where(where).ToListAsync().Result;

            return Success(list);
        }


        public AjaxResult SetItemLabel(ItemLabelDto model)
        {
            var item= Db.GetIQueryable<items>().FirstOrDefault(c => c.GoodsId == model.ItemId);

            if (item == null)
            {
                item = new items()
                {
                    CreateTime = DateTime.Now,
                    CreatorId = string.Empty,
                    Deleted = false,
                    GoodsId = model.ItemId,
                    Id = IdHelper.GetId(),
                    HasFilter = model.Status == 1,
                    Platform = (int)model.Platform
                };

                int row = Db.Insert(item);

                if (row <= 0)
                    return Error("添加失败！");
            }
            
            var where = LinqHelper.True<itemlabels>().And(c => c.ItemsId == item.Id);

            //团队筛选
            //where = where.And(c=>c.TeamId=="");


            var result = Db.RunTransaction(() =>
            {
                int row = 0;
                bool hasAdded = false;

                var label = GetIQueryable().FirstOrDefault(where);
                //新增
                if (label == null)
                {
                    label = new itemlabels()
                    {
                        CreateTime = DateTime.Now,
                        Deleted = false,
                        Id = IdHelper.GetId(),
                        ItemsId = item.Id,
                        CreatorId = string.Empty,
                        TeamId = string.Empty,
                        UserId = string.Empty
                    };

                    switch (model.Status)
                    {
                        case 0:
                            label.IsScreening = true;
                            break;
                        case 1:
                            label.IsFilter = true;
                            break;
                        case 2:
                            label.IsAdded = true;
                            break;
                        case 3:
                            label.IsCompeting = true;
                            break;
                    }
                    row = Db.Insert<itemlabels>(label);
                    if (row <= 0)
                        throw new Exception("标签设置失败！");
                }
                //更新
                else
                {
                    hasAdded = label.IsAdded;


                    //更新状态
                    row = Db.Update<itemlabels>(c => c.Id == label.Id, (data) =>
                    {
                        switch (model.Status)
                        {
                            case 0:
                                if (label.IsFilter)
                                    throw new Exception("该商品已被过滤！");
                                data.IsScreening = true;
                                break;
                            case 1:
                                if (label.IsScreening)
                                    throw new Exception("该商品已被筛选！");
                                data.IsFilter = true;
                                break;
                            case 2:
                                data.IsAdded = true;
                                break;
                            case 3:
                                data.IsCompeting = true;
                                break;
                        }
                    });
                    if (row <= 0)
                        throw new Exception("标签设置失败！");
                }


                //设置集团过滤
                if (model.Status == 1)
                {
                    Db.Update<items>(c => c.Id == item.Id, (i) => { i.HasFilter = true; });
                }

                //判断是否添加产品库
                if (model.Status==2&&!hasAdded)
                {
                    if (!iteamitemsBusiness.AddItem(new TeamitemDto()
                    {
                        GoodsId = model.ItemId,
                        ItemId = item.Id,
                        ItemImg = model.Img,
                        Price = model.Price,
                        Platform = item.Platform,
                        Sales = model.Sales,
                        Title = model.Title
                    }).Success)
                    {
                        throw new Exception("添加产品库失败！");
                    }
                }

            });

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