using Infrastructure.Attribute;
using Microsoft.AspNetCore.Http;
using SqlSugar;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Infrastructure;
using ARW.Model;
using ARW.Repository;
using ARW.Repository.Business.GoodsManager.GoodsSpecs.GoodsSkus;
using ARW.Service.Business.IBusinessService.GoodsManager.GoodsSpecs.GoodsSkus;
using ARW.Model.Dto.Business.GoodsManager.GoodsSpecs.GoodsSkus;
using ARW.Model.Models.Business.GoodsManager.GoodsSpecs.GoodsSkus;
using ARW.Model.Vo.Business.GoodsManager.GoodsSpecs.GoodsSkus;
using ARW.Model.Dto.Business.GoodsManager.Goodss;
using ARW.Model.Vo.Business.GoodsManager.Goodss;
using ARW.Repository.Business.GoodsManager.GoodsSpecs.GoodsSpecRels;
using ARW.Repository.Business.GoodsManager.GoodsSpecs.Specs;
using ARW.Repository.Business.GoodsManager.GoodsSpecs.SpecValues;
using Dapper;

namespace ARW.Service.Business.BusinessService.GoodsManager.GoodsSpecs.GoodsSkus
{
    /// <summary>
    /// 商品规格接口实现类
    ///
    /// @author lwh
    /// @date 2023-06-19
    /// </summary>
    [AppService(ServiceType = typeof(IGoodsSkuService), ServiceLifetime = LifeTime.Transient)]
    public class GoodsSkuServiceImpl : BaseService<GoodsSku>, IGoodsSkuService
    {
        private readonly GoodsSkuRepository _GoodsSkuRepository;
        private readonly GoodsSpecRelRepository _GoodsSpecRelRepository;
        private readonly SpecRepository _SpecRepository;
        private readonly SpecValueRepository _SpecValueRepository;

        public GoodsSkuServiceImpl(GoodsSkuRepository GoodsSkuRepository, GoodsSpecRelRepository goodsSpecRelRepository, SpecRepository specRepository, SpecValueRepository specValueRepository)
        {
            this._GoodsSkuRepository = GoodsSkuRepository;
            _GoodsSpecRelRepository = goodsSpecRelRepository;
            _SpecRepository = specRepository;
            _SpecValueRepository = specValueRepository;
        }

        #region 业务逻辑代码

        /// <summary>
        /// 获取商品Sku
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public async Task<GoodsSpecSkutVo> GetGoodsSkuList(GoodsSkuQueryDto parm)
        {
            var goodsSpecSkutVo = new GoodsSpecSkutVo();
            goodsSpecSkutVo.GoodsSpecList = new List<GoodsSpecListVo>();

            // 获取商品的规格组列表
            var specIds = (await _GoodsSpecRelRepository.GetListAsync(s => s.GoodsGuid == parm.GoodsGuid))
                .Select(item => item.SpecId)
                .Distinct()
                .ToList();

            var specs = await _SpecRepository.GetListAsync(s => specIds.Contains(s.SpecId));
            var specValueIds = (await _GoodsSpecRelRepository.GetListAsync(s => s.GoodsGuid == parm.GoodsGuid))
                .Where(item => item.SpecValueId != 0)
                .Select(item => item.SpecValueId)
                .Distinct()
                .ToList();

            var specValues = await GetSpecValuesAsync(specValueIds);

            foreach (var spec in specs)
            {
                var goodsSpecListVo = new GoodsSpecListVo
                {
                    SpecId = spec.SpecId,
                    SpecName = spec.SpecName,
                    Props = new List<SpecValueItem>()
                };
                goodsSpecListVo.Props.AddRange(specValues.Where(sv => sv.SpecId == spec.SpecId));

                goodsSpecSkutVo.GoodsSpecList.Add(goodsSpecListVo);
            }

            // 获取Sku列表
            var skuList = await _GoodsSkuRepository.GetListAsync(s => s.GoodsGuid == parm.GoodsGuid);
            goodsSpecSkutVo.SkuList = await GetSkuListWithSpecValuesAsync(skuList);

            return goodsSpecSkutVo;
        }

        private async Task<List<SpecValueItem>> GetSpecValuesAsync(List<int> specValueIds)
        {
            var specValues = await _SpecValueRepository.GetListAsync(sv => specValueIds.Contains(sv.SpecValueId));
            return specValues.Select(sv => new SpecValueItem
            {
                SpecId = sv.SpecId,
                SpecValueId = sv.SpecValueId,
                SpecValueName = sv.SpecValueName
            }).ToList();
        }

        private async Task<List<GoodsSkuVo>> GetSkuListWithSpecValuesAsync(List<GoodsSku> skuList)
        {
            var specValueIds = skuList.SelectMany(sku => new[] { sku.SpecValueId, sku.SpecSecondValueId, sku.SpecThirdValueId })
                .Distinct()
                .Where(id => id != 0)
                .ToList();

            var specValues = await GetSpecValuesAsync(specValueIds);

            return skuList.Select(sku => new GoodsSkuVo
            {
                GoodsSkuId = sku.GoodsSkuId,
                GoodsGuid = sku.GoodsGuid,
                SpecValue = specValues.FirstOrDefault(sv => sv.SpecValueId == sku.SpecValueId)?.SpecValueName,
                SpecSecondValue = specValues.FirstOrDefault(sv => sv.SpecValueId == sku.SpecSecondValueId)?.SpecValueName,
                SpecThirdValue = specValues.FirstOrDefault(sv => sv.SpecValueId == sku.SpecThirdValueId)?.SpecValueName,
                GoodsSkuImg = sku.GoodsSkuImg,
                GoodsSkuSkuCode = sku.GoodsSkuSkuCode,
                GoodsSkuPrice = sku.GoodsSkuPrice,
                GoodsSkuLinePrice = sku.GoodsSkuLinePrice,
                GoodsSkuStockNum = sku.GoodsSkuStockNum,
                GoodsSkuWeight = sku.GoodsSkuWeight
            }).ToList();
        }



        /// <summary>
        /// 获取规格值名称
        /// </summary>
        /// <param name="specValueId"></param>
        /// <returns></returns>
        public string GetSpecValueName(int specValueId)
        {
            // 从数据库中查询规格值名称
            var specValue = _SpecValueRepository.GetById(specValueId);
            if (specValue != null)
            {
                return specValue.SpecValueName;
            }

            return string.Empty;
        }


        /// <summary>
        /// 获取全部规格值名称
        /// </summary>
        /// <param name="skuId"></param>
        /// <returns></returns>
        public async Task<string> GetSpecValueFullName(int skuId)
        {
            var str = "";
            // 从数据库中查询规格值名称
            var sku = await _GoodsSkuRepository.GetByIdAsync(skuId);
            if (sku != null)
            {
                var specValue = await _SpecValueRepository.GetByIdAsync(sku.SpecValueId);
                str += specValue.SpecValueName;
                if (sku.SpecSecondValueId != 0)
                {
                    var specSecondValue = await _SpecValueRepository.GetByIdAsync(sku.SpecSecondValueId);
                    str += " " + specSecondValue.SpecValueName;
                }
                if (sku.SpecThirdValueId != 0)
                {
                    var specThirdValue = await _SpecValueRepository.GetByIdAsync(sku.SpecThirdValueId);
                    str += " " + specThirdValue.SpecValueName;
                }
            }

            return str;
        }

        #region Excel处理


        #endregion



        #endregion

    }
}