using Infrastructure;
using Infrastructure.Attribute;
using MDM.Model;
using MDM.Model.Material;
using MDM.Model.Material.Dto;
using MDM.Repository;
using MDM.Service;
using MDM.Services.IMaterialService;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System.Linq.Expressions;


namespace MDM.Services.Material
{
    /// <summary>
    /// Service业务层处理
    /// </summary>
    [AppService(ServiceType = typeof(IMaterialBomService), ServiceLifetime = LifeTime.Transient)]
    public class MaterialBomService : BaseService<MaterialBom>, IMaterialBomService
    {
        /// <summary>
        /// 查询列表
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<MaterialBomDto> GetList(MaterialBomQueryDto parm)
        {
            var predicate = Expressionable.Create<MaterialBom>()
                                .AndIF(!string.IsNullOrEmpty(parm.InvCode), it => it.InvCode.Contains(parm.InvCode))
                .AndIF(!string.IsNullOrEmpty(parm.SubInvCode), it => it.SubInvCode.Contains(parm.SubInvCode))
                ;

            var response = Queryable()
                .Where(predicate.ToExpression())
                  .OrderBy("created_time DESC")
                .ToPage<MaterialBom, MaterialBomDto>(parm);

            return response;
        }
        /// <summary>
        /// 获取母件BOM清单
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public PagedInfo<MaterialBomDto> GetMonterInvList(MaterialBomQueryDto parm)
        {
            var predicate = Expressionable.Create<MaterialBom>()
                .AndIF(!string.IsNullOrEmpty(parm.InvCode), it => it.InvCode.Contains(parm.InvCode))
                .AndIF(!string.IsNullOrEmpty(parm.SubInvCode), it => it.SubInvCode.Contains(parm.SubInvCode));

            var query = Context.Queryable<MaterialBom>()
            .Where(predicate.ToExpression())
            .GroupBy(it => it.InvCode)
            .Select(it => new MaterialBomDto()
            {
                Id = SqlFunc.AggregateMax(it.Id),
                InvCode = SqlFunc.AggregateMax(it.InvCode),
                InvName = SqlFunc.AggregateMax(it.InvName),
                SubInvName = SqlFunc.AggregateMax(it.SubInvName),
                Iusequantity = SqlFunc.AggregateMax(it.Iusequantity),
                BOMVersion = SqlFunc.AggregateMax(it.BOMVersion),
                CreatedBy = SqlFunc.AggregateMax(it.CreatedBy),
                // 改动1：注释掉CreatedTime聚合（临时避开）
                // CreatedTime = SqlFunc.AggregateMax(it.CreatedTime),
                UpdatedBy = SqlFunc.AggregateMax(it.UpdatedBy),
                UpdatedTime = SqlFunc.AggregateMax(it.UpdatedTime)
            })
            // 改动2：手动指定用UpdatedTime（数据库列updated_time）排序，避开CreatedTime
            .OrderBy("MAX(updated_time) DESC");

            // 匹配你的PagedInfo类的分页逻辑
            int pageIndex =  1;
            int pageSize =  10;
            int totalNum = query.Count();

            var response = new PagedInfo<MaterialBomDto>()
            {
                PageIndex = pageIndex,
                PageSize = pageSize,
                TotalNum = totalNum,
                Result = query.Skip((pageIndex - 1) * pageSize).Take(pageSize).ToList(),
                Extra = new Dictionary<string, object>()
            };

            return response;
        }

        /// <summary>
        /// 获取子件
        /// </summary>
        /// <param name="parm"></param>
        /// <returns></returns>
        public List<MaterialBom> GetSonInvList(MaterialBomQueryDto parm)
        {
            return Context.Queryable<MaterialBom>().Where(it => it.InvCode == parm.InvCode).ToList();

        }

        /// <summary>
        /// 获取详情
        /// </summary>
        /// <param name="Id"></param>
        /// <returns></returns>
        public MaterialBom GetInfo(string Id)
        {
            var response = Queryable()
                .Where(x => x.Id == Id)
                .First();

            return response;
        }

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public MaterialBom AddMaterialBom(MaterialBom model)
        {
            return Context.Insertable(model).ExecuteReturnEntity();
        }

        /// <summary>
        /// 修改
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public int UpdateMaterialBom(MaterialBom model)
        {
            //var response = Update(w => w.Id == model.Id, it => new MaterialBom()
            //{
            //    InvCode = model.InvCode,
            //    InvName = model.InvName,
            //    SubInvCode = model.SubInvCode,
            //    SubInvName = model.SubInvName,
            //    Iusequantity = model.Iusequantity,
            //    BOMVersion = model.BOMVersion,
            //    CreatedBy = model.CreatedBy,
            //    CreatedTime = model.CreatedTime,
            //    UpdatedBy = model.UpdatedBy,
            //    UpdatedTime = model.UpdatedTime,
            //});
            //return response;
            return Update(model, true);
        }

        public int ImportData(IFormFile formFile, string name)
        {
            using (var stream = formFile.OpenReadStream())
            {
                try
                {
                    IWorkbook workbook = new XSSFWorkbook(stream);
                    ISheet sheet = workbook.GetSheet("物料BOM清单");
                    List<MaterialBom> materialBoms = new List<MaterialBom>();
                    // 遍历每一行
                    for (int row = 1; row <= sheet.LastRowNum; row++)
                    {
                        IRow currentRow = sheet.GetRow(row);
                        //目前没加物料是否正确校验


                        if (currentRow != null && currentRow.GetCell(0) != null) // 确保行不为空
                        {
                            MaterialBom item = new MaterialBom();
                            item.Id = XueHua;
                            //母件编码
                            if (currentRow.GetCell(0) != null && currentRow.GetCell(0).CellType == CellType.String)
                                item.InvCode = currentRow.GetCell(0).ToString();
                            //母件名称
                            if (currentRow.GetCell(1) != null && currentRow.GetCell(1).CellType == CellType.String)
                                item.InvName = currentRow.GetCell(1).ToString();

                            //子件编码
                            if (currentRow.GetCell(2) != null && currentRow.GetCell(2).CellType == CellType.String)
                                item.SubInvCode = currentRow.GetCell(2).ToString();
                            //子件名称
                            if (currentRow.GetCell(3) != null && currentRow.GetCell(3).CellType == CellType.String)
                                item.SubInvName = currentRow.GetCell(3).ToString();
                            //使用数量
                            if (currentRow.GetCell(4) != null && currentRow.GetCell(4).CellType == CellType.String)
                                item.Iusequantity = currentRow.GetCell(4).ToString();


                            //BOM版本号
                            if (currentRow.GetCell(5) != null && currentRow.GetCell(5).CellType == CellType.String)
                                item.BOMVersion = currentRow.GetCell(5).ToString();

                            materialBoms.Add(item);

                        }
                    }

                    if (materialBoms.Count == 0)
                    {
                        return 0;
                    }
                    UseTran2(() =>
                    {
                        // Context.Deleteable<ProPlanAchievementrateVersion2>().Where(it => it.RecordDate == RecordDate.Date).ExecuteCommand();
                        Context.Insertable(materialBoms).ExecuteCommand();
                    });
                    return materialBoms.Count;
                }
                catch (Exception ex)
                {
                    throw new CustomException("excel文件异常，请详细核对");


                }



            }

        }


        public byte[] ExportData()
        {
            IWebHostEnvironment webHostEnvironment = (IWebHostEnvironment)App.ServiceProvider.GetService(typeof(IWebHostEnvironment));
            // 使用Path.Combine构建正确的路径，避免硬编码的路径分隔符
            string templatePath = Path.Combine(webHostEnvironment.ContentRootPath, "..\\MDM", "Assets", "ImportTemplate", "MaterialMODEL.xlsx");


            if (!global::System.IO.File.Exists(templatePath))
            {
                throw new CustomException("Excel 模板文件不存在");
            }

            List<MaterialType> dataList = Context.Queryable<MaterialType>()
                .Where(it => it.Status == 1)
                .ToList();

            using (var fileStream = new FileStream(templatePath, FileMode.Open, FileAccess.Read))
            {
                IWorkbook workbook = WorkbookFactory.Create(fileStream);
                ISheet sheet = workbook.GetSheet("物料类型");

                int startRowIndex = 1;
                for (int i = 0; i < dataList.Count; i++)
                {
                    var item = dataList[i];
                    IRow row = sheet.GetRow(startRowIndex + i) ?? sheet.CreateRow(startRowIndex + i);

                    // 为每个需要数字的单元格设置值，并应用 numberCellStyle
                    row.CreateCell(0).SetCellValue(item.Name);

                    // 以下为字符串类型字段，不需要数字格式
                    row.CreateCell(1).SetCellValue(item.Code);
                    row.CreateCell(2).SetCellValue(item.ParentCode);
                    row.CreateCell(3).SetCellValue((double)item.Status);
                }

                // 改为写入 MemoryStream 然后转成 byte[]
                var memoryStream = new MemoryStream();
                workbook.Write(memoryStream);
                // memoryStream.Position = 0;
                return memoryStream.ToArray(); // ✅ 直接返回 byte 数组
            }



        }


    }
}