using System;
using System.Xml;
using System.IO;
using System.Text;
using System.Collections.Generic;

using System.Reflection;
using System.Threading;
//using Microsoft.Office.Interop.Excel;

namespace CarSystem.Account.FileUtil
{
    ///<summary>
    ///　模块编号：PTS.Common.ExcelUtil
    ///　作    用：Excel读写类
    ///　编写日期：2009-09-08
    ///</summary>
    public class ExcelUtil
    {
        //excel数据类型
        private const char SEPARAT = '#';
        private const string DATA_TYPE_STRING = "String";
        private const string DATA_TYPE_NUMBER = "Number";

        //excel命名空间
        private static string urlSS;

        //解析生成的结果
        private static XmlDocument xmlDoc;

        static ExcelUtil()
        {
            //实例化一个XmlDocument对像
            xmlDoc = new XmlDocument();
            urlSS = "urn:schemas-microsoft-com:office:spreadsheet";
        }

        public enum DataType
        {
            String,
            Number
        }

        /// <summary>
        /// 取得用于输出到excel的合并字符
        /// </summary>
        /// <param name="type"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static string GetJoinedData(DataType type, object data)
        {
            #region
            try
            {
                if (data == null)
                {
                    return string.Empty;
                }

                if (DataType.String == type)
                {
                    return DATA_TYPE_STRING + SEPARAT + data.ToString();
                }
                else if (DataType.Number == type)
                {

                    return DATA_TYPE_NUMBER + SEPARAT + data.ToString();
                }
                else
                {
                    return DATA_TYPE_STRING + SEPARAT + data.ToString();
                }
            }
            catch { return ""; }
            #endregion
        }

        /// <summary>
        /// 取得用于输出到excel的合并字符
        /// </summary>
        /// <param name="type"></param>
        /// <param name="data"></param>
        /// <returns></returns>
        public static string GetJoinedData(DataType type, decimal? data, string format)
        {
            #region
            try
            {
                if (DataType.String == type)
                {
                    return DATA_TYPE_STRING + SEPARAT + data.GetValueOrDefault().ToString(format);
                }
                else if (DataType.Number == type)
                {

                    return DATA_TYPE_NUMBER + SEPARAT + data.GetValueOrDefault() + SEPARAT + format;
                }
                else
                {
                    return DATA_TYPE_STRING + SEPARAT + data.GetValueOrDefault().ToString(format);
                }
            }
            catch { return ""; }
            #endregion
        }

        /// <summary>
        /// 单元格类型
        /// </summary>
        /// <param name="RowNumber"></param>
        /// <returns></returns> 
        private enum CellType
        {
            Data,
            StationName,
            Legend
        }

        #region 获取模板

        /// <summary>
        /// 写入Excel
        /// </summary>
        /// <param name="response"></param>
        /// <param name="defaultFileName">默认文件名</param>
        /// <param name="ls">写入内容</param>
        public static void WriteExcel_(string filePathName, string defaultSheetName, List<string[]> ls)
        {
            #region

            //超过excel最大行数
            if (ls.Count > 65536)
            {
                throw new Exception("导出数据不能超过65536条!\n");
                return;
            }

            //*****文件另存为*****
            StreamWriter sw = new StreamWriter(filePathName, false, System.Text.Encoding.UTF8);
            StreamWriter sw2 = sw;

            StringBuilder sbContext = new StringBuilder();

            sw2.WriteLine("<?xml version=\"1.0\"?>");
            sw2.WriteLine("<?mso-application progid=\"Excel.Sheet\"?>");
            sw2.WriteLine("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");
            sw2.WriteLine(" xmlns:o=\"urn:schemas-microsoft-com:office:office\"");
            sw2.WriteLine(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");
            sw2.WriteLine(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"");
            sw2.WriteLine(" xmlns:html=\"http://www.w3.org/TR/REC-html40\">");

            sw2.WriteLine("<Styles>");
            sw2.WriteLine("  <Style ss:ID=\"s21\"><NumberFormat ss:Format=\"0.00_ \"/></Style>");
            sw2.WriteLine("</Styles>");

            int pageSize = 100;//每页600条，计算有几页
            int cnt = (ls.Count - 1) / pageSize + ((ls.Count - 1) <= pageSize ? 1 : ((ls.Count - 1) % pageSize > 0 ? 1 : 0));

            for (int pg = 1; pg <= cnt; pg++)
            {
                //sheet名
                sw2.WriteLine("<Worksheet ss:Name=\"" + defaultSheetName + pg.ToString() + "\">");
                sw2.WriteLine("    <Table>");

                #region 打印标题

                sw2.WriteLine("    <Row ss:Index=\"" + (1) + "\">");

                for (int col = 0; col < ls[1].Length; col++)
                {
                    //数据为空
                    if (string.IsNullOrEmpty(ls[0][col]))
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\"></Data></Cell>");
                        continue;
                    }

                    var aryData = ls[0][col].Split(SEPARAT);
                    if (aryData.Length == 1)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\">" + aryData[0] + "</Data></Cell>");
                    }
                    else if (aryData.Length == 2)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                    }
                    else if (aryData.Length == 3)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\" ss:StyleID=\"s21\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                    }
                }

                sw2.WriteLine("    </Row>");

                #endregion

                for (int row = (pg - 1) * pageSize + 1; row < pg * pageSize + 1; row++)
                {
                    if (row >= ls.Count) { break; }    //当达到最大记录数，则退出循环
                    sw2.WriteLine("    <Row ss:Index=\"" + (row - (pg - 1) * pageSize + 1) + "\">");

                    for (int col = 0; col < ls[row].Length; col++)
                    {
                        //数据为空
                        if (string.IsNullOrEmpty(ls[row][col]))
                        {
                            sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\"></Data></Cell>");
                            continue;
                        }

                        var aryData = ls[row][col].Split(SEPARAT);
                        if (aryData.Length == 1)
                        {
                            sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\">" + aryData[0] + "</Data></Cell>");
                        }
                        else if (aryData.Length == 2)
                        {
                            sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                        }
                        else if (aryData.Length == 3)
                        {
                            sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\" ss:StyleID=\"s21\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                        }
                    }

                    sw2.WriteLine("    </Row>");
                }

                sw2.WriteLine("    </Table>");
                sw2.WriteLine("</Worksheet>");
            }
            sw2.WriteLine("</Workbook>");

            //*****文件另存为*****
            sw2 = null;
            sw.Close();
            sw.Dispose();
            //********************
            // RepairXls(filePathName);

            #endregion
        }

        /// <summary>
        /// 写入Excel
        /// </summary>
        /// <param name="response"></param>
        /// <param name="defaultFileName">默认文件名</param>
        /// <param name="ls">写入内容</param>
        public static void WriteExcel(string filePathName, string defaultSheetName, List<string[]> ls)
        {
            #region

            //超过excel最大行数
            if (ls.Count > 65536)
            {
                throw new Exception("导出数据不能超过65536条!\n");
                return;
            }

            //*****文件另存为*****
            StreamWriter sw = new StreamWriter(filePathName, false, System.Text.Encoding.UTF8);
            StreamWriter sw2 = sw;

            StringBuilder sbContext = new StringBuilder();

            sw2.WriteLine("<?xml version=\"1.0\"?>");
            sw2.WriteLine("<?mso-application progid=\"Excel.Sheet\"?>");
            sw2.WriteLine("<Workbook xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");
            sw2.WriteLine(" xmlns:o=\"urn:schemas-microsoft-com:office:office\"");
            sw2.WriteLine(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");
            sw2.WriteLine(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"");
            sw2.WriteLine(" xmlns:html=\"http://www.w3.org/TR/REC-html40\">");

            sw2.WriteLine("<Styles>");
            sw2.WriteLine("  <Style ss:ID=\"s21\"><NumberFormat ss:Format=\"0.00_ \"/></Style>");
            sw2.WriteLine("</Styles>");

            //sheet名
            sw2.WriteLine("<Worksheet ss:Name=\"" + defaultSheetName + "\">");
            sw2.WriteLine("    <Table>");

            for (int row = 0; row < ls.Count; row++)
            {
                sw2.WriteLine("    <Row ss:Index=\"" + (row + 1) + "\">");

                for (int col = 0; col < ls[row].Length; col++)
                {
                    //数据为空
                    if (string.IsNullOrEmpty(ls[row][col]))
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\"></Data></Cell>");
                        continue;
                    }

                    var aryData = ls[row][col].Split(SEPARAT);
                    if (aryData.Length == 1)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"String\">" + aryData[0] + "</Data></Cell>");
                    }
                    else if (aryData.Length == 2)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                    }
                    else if (aryData.Length == 3)
                    {
                        sw2.WriteLine("    <Cell ss:Index=\"" + (col + 1) + "\" ss:StyleID=\"s21\"><Data ss:Type=\"" + aryData[0] + "\">" + aryData[1] + "</Data></Cell>");
                    }
                }

                sw2.WriteLine("    </Row>");
            }

            sw2.WriteLine("    </Table>");
            sw2.WriteLine("</Worksheet>");
            sw2.WriteLine("</Workbook>");

            //*****文件另存为*****
            sw2 = null;
            sw.Close();
            sw.Dispose();
            //********************
            //  RepairXls(filePathName);

            #endregion
        }

        /// <summary>
        /// 把 Xml 格式的 Excel 文件转换成 二进制格式的 Excel 文件
        /// 2011-07-03 李峰
        /// </summary>
        /// <param name="xlsPath"></param>
        //public static void RepairXls(string xlsPath)
        //{
        //    #region
        //    Workbook excelBook = null;
        //    ApplicationClass excelApp = null;
        //    object Nothing = System.Reflection.Missing.Value;
        //    excelApp = new ApplicationClass();
        //    excelApp.Visible = false;
        //    excelApp.DisplayAlerts = false;
        //    excelApp.AlertBeforeOverwriting = false;
        //    excelApp.AskToUpdateLinks = false;

        //    excelBook = excelApp.Workbooks.Open(xlsPath, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing, Nothing);
        //    try
        //    {
        //        excelBook.SaveAs(xlsPath, XlFileFormat.xlExcel5, Nothing, Nothing, Nothing, Nothing, XlSaveAsAccessMode.xlNoChange, Nothing, Nothing, Nothing, Nothing, Nothing);
        //    }
        //    catch (Exception ex)
        //    { }

        //    if (excelBook != null)
        //    {
        //        excelBook.Close(Nothing, Nothing, Nothing);
        //        System.Runtime.InteropServices.Marshal.ReleaseComObject(excelBook);
        //        excelBook = null;

        //        excelApp.Application.Quit();
        //        System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);
        //        excelApp = null;
        //    }
        //    GC.Collect();
        //    GC.WaitForPendingFinalizers();
        //    #endregion
        //}
        #endregion
    }
}