using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MaterialTraceability.Common
{
    public class MsgUtil
    {
        public static string HexStringToASCII(string hexstring)
        {
            byte[] buff = new byte[(hexstring.Length - 8)/ 2];
            int index = 0;
            for (int i = 0; i < hexstring.Length - 8; i += 2)
            {
                buff[index] = Convert.ToByte(hexstring.Substring(i, 2), 16);
                ++index;
            }
            string result = Encoding.Default.GetString(buff);
            return result;
        }
        public static string StringReverse(string hexstring)
        {
            char[] cs = new char[20];
            cs = hexstring.ToCharArray();
            if (hexstring.Length%2 == 0)
            {
                for (int i = 0; i < cs.Length; i += 2)
                {
                    Array.Reverse(cs, i, 2);
                }
            }
            else
            {
                for (int i = 0; i < cs.Length-1; i += 2)
                {
                    Array.Reverse(cs, i, 2);
                }
            }
            
            string res = new string(cs);
            return res;
        }

        /// <summary>
        /// 计算时间差
        /// </summary>
        /// <param name="BeginTime"></param>
        /// <param name="EndTime"></param>
        /// <returns></returns>
        public static string ExecDateTime(DateTime BeginTime, DateTime EndTime)
        {
            string dateDiff = null;
            TimeSpan ts1 = new TimeSpan(BeginTime.Ticks);
            TimeSpan ts2 = new TimeSpan(EndTime.Ticks);
            TimeSpan ts3 = ts1.Subtract(ts2).Duration();
            dateDiff = ts3.Days.ToString() + "天" + ts3.Hours.ToString() + "小时" + ts3.Minutes.ToString() + "分钟" + ts3.Seconds.ToString() + "秒";

            return dateDiff;
        }
        public static string ExecDateTime(DateTime BeginTime, DateTime EndTime, out double interval)
        {
            string dateDiff = null;
            TimeSpan ts1 = new TimeSpan(BeginTime.Ticks);
            TimeSpan ts2 = new TimeSpan(EndTime.Ticks);
            TimeSpan ts3 = ts1.Subtract(ts2).Duration();
            dateDiff = ts3.Days.ToString() + "天" + ts3.Hours.ToString() + "小时" + ts3.Minutes.ToString() + "分钟" + ts3.Seconds.ToString() + "秒";
            interval = double.Parse(ts3.TotalHours.ToString());
            return dateDiff;
        }
        /// <summary>
        /// 计算接口调用耗时
        /// </summary>
        /// <param name="BeginTime"></param>
        /// <param name="EndTime"></param>
        /// <returns></returns>
        public static string ElapsedTime(DateTime BeginTime, DateTime EndTime)
        {
            string dateDiff = null;
            TimeSpan ts1 = new TimeSpan(BeginTime.Ticks);
            TimeSpan ts2 = new TimeSpan(EndTime.Ticks);
            TimeSpan ts3 = ts1.Subtract(ts2).Duration();
            dateDiff = ts3.Milliseconds.ToString() + "ms";

            return dateDiff;
        }

        protected static int WriteRow(DataRow dr, ISheet sheet, int irows)
        {
            int Result = 0;
            IRow row = sheet.CreateRow(irows);
            for (int icell = 0; icell < dr.Table.Columns.Count; icell++)
            {
                if (dr[icell] == null)
                {
                    row.CreateCell(icell).SetCellValue("");
                }
                if (dr[icell] is DateTime)
                {
                    row.CreateCell(icell).SetCellValue(((DateTime)dr[icell]).ToString("yyyy-MM-dd HH:mm:ss").Replace(" 00:00:00", ""));
                    continue;
                }
                if (dr[icell] is double)
                {
                    row.CreateCell(icell).SetCellValue((double)dr[icell]);
                    continue;
                }
                if (dr[icell] is decimal)
                {
                    string s = dr[icell].ToString();
                    row.CreateCell(icell).SetCellValue(double.Parse(s));
                    continue;
                }
                if (dr[icell] is int)
                {
                    row.CreateCell(icell).SetCellValue((int)dr[icell]);
                    continue;
                }
                row.CreateCell(icell).SetCellValue(dr[icell].ToString());
            }
            Result++;
            return Result;
        }
        public static void WriteMesLog(string filename,string resource, DataTable dt)
        {
            if (!Directory.Exists(filename))
            {
                Directory.CreateDirectory(filename);
            }
            //filename = filename + @"\" + resource + "_log_" + DateTime.Now.ToString("yyyy-MM-dd") + ".xls";
            filename = filename+DateTime.Now.ToString("yyyy-MM-dd") + ".xls";

            if (!File.Exists(filename))        // 返回bool类型，存在返回true，不存在返回false                                     
            {
                System.IO.StreamWriter sw = System.IO.File.AppendText(filename);
                sw.Close();
                HSSFWorkbook hssfworkbook = new HSSFWorkbook();
                ISheet sheet = hssfworkbook.CreateSheet(resource +"_log_"+ DateTime.Now.ToString("yyyy-MM-dd"));
                for (int idr = 0; idr < dt.Rows.Count; idr++)
                {
                    WriteRow(dt.Rows[idr], sheet, idr);//写入每一行
                }
                FileStream fout = new FileStream(filename, FileMode.Open, FileAccess.Write, FileShare.ReadWrite);//写入流
                fout.Flush();
                hssfworkbook.Write(fout);//写入文件
                hssfworkbook = null;
                fout.Close();
            }
            else
            {
               
                //如果存在文件
                FileStream fileReader = new FileStream(filename, FileMode.Open, FileAccess.Read);//读取流
                IWorkbook workbook = new HSSFWorkbook(fileReader);
                ISheet sheet = workbook.GetSheetAt(0);
                int count = sheet.LastRowNum + 1;
                for (int idr = 0; idr < dt.Rows.Count; idr++)
                {
                    WriteRow(dt.Rows[idr], sheet, count);//写入每一行
                }
                FileStream fout = new FileStream(filename, FileMode.Open, FileAccess.Write, FileShare.ReadWrite);//写入流
                fout.Flush();
                workbook.Write(fout);//写入文件
                workbook = null;
                fout.Close();
            }
        }

        /// <summary>
        /// 解密
        /// 孙本强 @ 2013-04-03 13:12:02
        /// </summary>
        /// <param name="src">The SRC.</param>
        /// <param name="key">The key.</param>
        /// <param name="encoding">The encoding.</param>
        /// <returns></returns>
        /// <remarks></remarks>
        public static string DecryptString(string src, string key, Encoding encoding)
        {
            int KeyLen;
            int KeyPos;
            int offset;
            string dest;
            int SrcPos;
            int SrcAsc;
            int TmpSrcAsc;

            KeyLen = key.Length;
            if (KeyLen == 0)
            {
                key = "Mesnac";
            }
            KeyPos = 0;
            SrcPos = 0;
            SrcAsc = 0;
            if (src.Length <= 2)
            {
                return string.Empty;
            }
            dest = "";
            offset = Convert.ToInt32(src.Substring(0, 2), 16);
            SrcPos = 2;
            while (SrcPos < src.Length)
            {
                SrcAsc = Convert.ToInt32(src.Substring(SrcPos, 2), 16);
                if (KeyPos < KeyLen)
                {
                    KeyPos = KeyPos + 1;
                }
                else { KeyPos = 0; }

                TmpSrcAsc = SrcAsc ^ (int)key[KeyPos]; //异或
                if (TmpSrcAsc <= offset)
                {
                    TmpSrcAsc = 255 + TmpSrcAsc - offset;
                }
                else
                {
                    TmpSrcAsc = TmpSrcAsc - offset;
                }
                dest = dest + (char)TmpSrcAsc;
                offset = SrcAsc;
                SrcPos = SrcPos + 2;
            }
            return dest;
        }

    }
}