using AutoMapper;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WMS.Web.Core.Dto.Inventory;
using WMS.Web.Core.Internal.Results;
using WMS.Web.Domain.Entitys;
using WMS.Web.Domain.Infrastructure;
using WMS.Web.Domain.IService;
using WMS.Web.Domain.Values;

namespace WMS.Web.Domain.Services
{
    /// <summary>
    /// 即时库存-服务
    /// </summary>
    public class InventoryDetailsService: IInventoryDetailsService
    {
        private readonly IMapper _mapper;
        private readonly IBoxRepositories _boxRepositories;
        private readonly ISerialNumbersRepositories _serialNumbersRepositories;
        private readonly IInventoryDetailsRepositories _inventoryDetailsRepositories;
        public InventoryDetailsService(IMapper mapper, IBoxRepositories boxRepositories,
            ISerialNumbersRepositories serialNumbersRepositories,
            IInventoryDetailsRepositories inventoryDetailsRepositories)
        {
            _mapper = mapper;
            _boxRepositories = boxRepositories;
            _inventoryDetailsRepositories = inventoryDetailsRepositories;
            _serialNumbersRepositories = serialNumbersRepositories;
        }

        /// <summary>
        /// 生成：即时库存明细
        /// </summary>
        /// <param name="dtos"></param>
        /// <param name="isTransaction"></param>
        /// <returns></returns>
        public async Task<Result> GenerateInventoryDetails(List<InventoryDetailsGenerateDto> dtos,bool isTransaction)
        {
            //找到物料对应的即时库存明细
            var orgCodes = dtos.Select(x => x.OrgCode).ToList();
            var materialIds = dtos.Select(x => x.MaterialId).ToList();
            var stockCodes = dtos.GroupBy(x => x.StockCode).Select(x => x.Key).ToList();
            var subStockIds = dtos.GroupBy(x => x.SubStockId).Select(x => x.Key).ToList();
            var inventoryDetails = await _inventoryDetailsRepositories.GetListBy(materialIds, stockCodes, subStockIds, orgCodes);


            var add_entitys = new List<InventoryDetails>();
            var update_entitys = new List<InventoryDetails>();

            //2.遍历
            foreach (var dto in dtos)
            {
                //2.1当前的即时库存明细
                var currentDetail = inventoryDetails.Where(x => 
                x.MaterialId == dto.MaterialId &&
                x.StockCode == dto.StockCode && 
                x.SubStockId == dto.SubStockId &&
                x.OrgCode==dto.OrgCode).FirstOrDefault();
                if (currentDetail == null)
                {
                    //出库的时候，判断是否有库存，没有就返回错误
                    if (dto.InventoryInOutType == (int)InventoryInOutType.Out)
                        return Result.ReFailure(ResultCodes.InventoryDetailsNoInventoryError);

                    var entity = _mapper.Map<InventoryDetails>(dto);
                    add_entitys.Add(entity);
                }
                else 
                {
                    var entity = currentDetail;
                    if (dto.InventoryInOutType == (int)InventoryInOutType.In)
                    {
                        //加库存
                        entity.Qty = entity.Qty + dto.Qty;
                    }
                    else
                    {
                        //出库的时候，判断是否有库存，没有就返回错误
                        if (entity.Qty<dto.Qty)
                            return Result.ReFailure(ResultCodes.InventoryDetailsNoInventoryError);
                        //减库存
                        entity.Qty = entity.Qty - dto.Qty;
                    }
                    update_entitys.Add(entity);
                }
            }


            //4.数据库更新操作:更新和添加
            var isSuccess = true;
            if (add_entitys.Count != 0)
            {
                isSuccess = await _inventoryDetailsRepositories.AddRange(add_entitys, isTransaction);
                if (!isSuccess) return Result.ReFailure(ResultCodes.InventoryDetailsWriteError);
            }
            if (update_entitys.Count != 0)
            {
                isSuccess = await _inventoryDetailsRepositories.UpdateRange(update_entitys, isTransaction);
                if (!isSuccess) return Result.ReFailure(ResultCodes.InventoryDetailsWriteError);
            }
            return Result.ReSuccess();
        }
    }
}