using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using wms.dto.request.hj.dto;

namespace wms.util.Ext
{
    public class ExeclHelperOv
    {
        public static byte[] OutputExcel<T>(List<T> entitys, List<ExportModel> row)
        {
            IWorkbook workbook = new XSSFWorkbook();
            var headFont = workbook.CreateFont();
            headFont.IsBold = true;

            //标题列样式
            var headStyle = workbook.CreateCellStyle();
            headStyle.Alignment = HorizontalAlignment.Center;
            headStyle.BorderBottom = BorderStyle.Thin;
            headStyle.BorderLeft = BorderStyle.Thin;
            headStyle.BorderRight = BorderStyle.Thin;
            headStyle.BorderTop = BorderStyle.Thin;
            headStyle.SetFont(headFont);

            ISheet sheet = workbook.CreateSheet("sheet");
            IRow Title = null;
            IRow rows = null;

            for (int i = 0; i <= entitys.Count; i++)
            {
                if (i == 0)
                {
                    Title = sheet.CreateRow(0);
                    for (int k = 1; k < row.Count + 1; k++)
                    {
                        Title.CreateCell(0).SetCellValue("序号");
                        Title.CreateCell(k).SetCellValue(row[k - 1].Title);
                    }
                    continue;
                }
                else
                {
                    rows = sheet.CreateRow(i);
                    var entity = entitys[i - 1];
                    for (int j = 0; j < row.Count; j++)
                    {
                        var filenames = row[j].Code.Substring(0, 1).ToUpper() + row[j].Code.Substring(1);
                        var propInfo = entity.GetType().GetProperty(filenames);
                        if (propInfo == null)
                            continue;
                        var kkk = propInfo.GetValue(entity);
                        if (kkk != null)
                        {
                            rows.CreateCell(0).SetCellValue(i);
                            switch (propInfo.PropertyType.Name)
                            {
                                case "String":
                                    rows.CreateCell(j + 1).SetCellValue(kkk.ToString());
                                    break;
                                case "Decimal":
                                case "Double":
                                    rows.CreateCell(j + 1).SetCellValue(Convert.ToDouble(kkk.ToString()));
                                    break;
                                case "Int32":
                                    rows.CreateCell(j + 1).SetCellValue(Convert.ToInt32(kkk.ToString()));
                                    break;
                                case "DateTime":
                                    rows.CreateCell(j + 1).SetCellValue(kkk.ToString());
                                    break;
                            }
                        }

                    }
                }
            }
            byte[] buffer = new byte[1024 * 2];
            using (MemoryStream ms = new MemoryStream())
            {
                workbook.Write(ms, true);
                buffer = ms.ToArray();
                ms.Close();
            }
            return buffer;
        }
    }
 }