// OTSHelper.cpp : implementation file
//
#pragma once
#include "stdafx.h"
#include "OTSHelper.h"

//#include "OTSModel.h"
#include "HardDriveSerialNumber.h"

#include "COTSUtilityDllFunExport.h"

#include <strsafe.h>
#include <sstream>
//using namespace NSLogTools;
// COTSHelper
namespace OTSTools {
	const CString OTS_TEXT_FILE_COMMENT = _T("//"); 
	COTSHelper::COTSHelper()
	{
	}

	COTSHelper::~COTSHelper()
	{
	}

	// COTSHelper member functions

	// gets the name of the folder
	CString COTSHelper::GetFolderName(CString a_strPathName)
	{		
		TCHAR sPath[MAX_PATH];
		_tcscpy_s(sPath, MAX_PATH, a_strPathName);
		::PathRemoveFileSpec(sPath);

		return sPath;
	}

	// get file name without extension
	CString COTSHelper::GetFileNameWithoutExtension(CString a_strPathName)
	{
		TCHAR sPath[MAX_PATH + 4];
		_tcscpy_s(sPath, MAX_PATH, a_strPathName);
		::PathRemoveExtension(sPath);

		return sPath;
	}

	// Gets the name of the file.
	CString COTSHelper::GetFileName(LPCTSTR a_strPathName)
	{
		return ::PathFindFileName(a_strPathName);
	}

	// Get file extension
	CString COTSHelper::GetFileExtension(LPCTSTR a_strPathName)
	{
		return ::PathFindExtension(a_strPathName);
	}

	// Get system error string
	LPCTSTR COTSHelper::GetSystemErrorString(DWORD a_nErr)
	{
		LPTSTR strErr;
		::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
						FORMAT_MESSAGE_FROM_SYSTEM,
						NULL,
						a_nErr,
						0,
						(LPTSTR)&strErr,
						0,
						NULL);

		return strErr;
	}

	// Strings to int.
	BOOL COTSHelper::StringToInt(LPCTSTR a_sValue, int& a_nValue)
	{
		if (!IsDigitString(a_sValue))
		{
			LogErrorTrace(__FILE__, __LINE__, _T("StringToInt: value string (%s) is not digit string."), a_sValue);
			return FALSE;
		}

		a_nValue = _ttoi(a_sValue);

		return TRUE;
	}

	// Strings to double.
	BOOL COTSHelper::StringToDouble(LPCTSTR a_sValue, double& a_dValue)
	{
		if (!IsDoubleString(a_sValue))
		{
			LogErrorTrace(__FILE__, __LINE__, _T("StringToDouble: value string (%s) is not digit string."), a_sValue);
			return FALSE;
		}

		a_dValue = _ttof(a_sValue);

		return TRUE;
	}


	// Determines whether is digit string.
	BOOL COTSHelper::IsDigitString(LPCTSTR a_sValue)
	{
		CString strInt = a_sValue;
		strInt.Trim();

		if (strInt.IsEmpty())
		{
			LogErrorTrace(__FILE__, __LINE__, _T("IsDigitString: value string is an empty string."));
			return FALSE;
		}

		int nStart = 0;

		if (strInt[nStart] == _T('-'))
		{
			++nStart;
		}

		// cycle through string and check each character if it is a digit
		for (; nStart < strInt.GetLength(); ++nStart)
		{
			if (!isdigit_t(strInt[nStart]))
			{
				LogErrorTrace(__FILE__, __LINE__, _T("IsDigitString: value string (%s) is not a digit string."), strInt);
				return FALSE;
			}
		}

		return TRUE;
	}

	// Determines whether is double string.
	BOOL COTSHelper::IsDoubleString(LPCTSTR a_sValue)
	{
		CString strDouble = a_sValue;
		strDouble.Trim();

		if (strDouble.IsEmpty())
		{
			LogErrorTrace(__FILE__, __LINE__, _T("IsDoubleString: value string is an empty string."));
			return FALSE;
		}

		int nStart = 0;

		// if there is negative value
		if (strDouble[nStart] == _T('-'))
		{
			++nStart;
		}

		// cycle through string and check each character if it is a digit
		BOOL bDot = FALSE;
		for (; nStart < strDouble.GetLength(); ++nStart)
		{
			if (!isdigit_t(strDouble[nStart]))
			{
				if (!bDot && strDouble[nStart] == _T('.'))
				{
					bDot = TRUE;
				}
				else
				{
					LogErrorTrace(__FILE__, __LINE__, _T("IsDoubleString: value string (%s) is not a double string."), strDouble);
					return FALSE;
				}
			}
		}

		return TRUE;
	}

	// is CTRL key pressed 
	BOOL COTSHelper::IsCtrlKeyPressed()
	{
		return (::GetKeyState(VK_CONTROL) < 0);
	}

	// is shift key pressed
	BOOL COTSHelper::IsShiftKeyPressed()
	{
		return (::GetKeyState(VK_SHIFT) < 0);
	}

	// Saves the bitmap to file.
	// return TRUE if successful, FALSE otherwise.
	BOOL COTSHelper::SaveBitmapToFile(Gdiplus::Bitmap* a_pBitmap, LPCTSTR a_pFileName)
	{
		// input file check
		ASSERT(a_pBitmap);
		if (!a_pBitmap)
		{
			LogErrorTrace(__FILE__, __LINE__, "SaveBitmapToStream: invalid file a_pBitmap.");
			return FALSE;
		}

		// file name check
		CString strPathName = a_pFileName;
		strPathName.Trim();
		if (strPathName.IsEmpty())
		{
			LogErrorTrace(__FILE__, __LINE__, "SaveBitmapToStream: file name can't be empty string.");
			return FALSE;
		}

		// file extension
		CString strFileExt = GetFileExtension(a_pFileName);

		CString strClisdFormat(_T("image/"));
		if (strFileExt.IsEmpty())
		{
			strClisdFormat += _T("bmp");
		}
		else
		{
			strClisdFormat += strFileExt.Right(strFileExt.GetLength() - 1);
		}

		// Get encoder CLSID
		CLSID CLSIDImage;
		WCHAR* psClisdFormat = (WCHAR*)strClisdFormat.GetBuffer(strClisdFormat.GetLength());
		if (COTSHelper::GetEncoderClsid(psClisdFormat, &CLSIDImage) < 0)
		{
			LogErrorTrace(__FILE__, __LINE__, _T("SaveBitmapToStream: Couldn't find CLSID for bitmap image: %s"), (LPCTSTR)strClisdFormat);
			ASSERT(FALSE);
			return FALSE;
		}

		// save
		WCHAR* psFileName = (WCHAR*)strPathName.GetBuffer(strPathName.GetLength());
		Gdiplus::Status ret = a_pBitmap->Save(psFileName, &CLSIDImage);
		if (ret != Gdiplus::Ok)
		{
			LogErrorTrace(__FILE__, __LINE__, _T("SaveBitmapToStream: Save bitmap image failed, return %d."), (int)ret);
			ASSERT(FALSE);
			return FALSE;
		}

		// Ok, return TRUE
		return TRUE;
	}

	// Saves the bitmap to stream.
	// return TRUE if successful, FALSE otherwise.
	BOOL COTSHelper::SaveBitmapToStream(Gdiplus::Bitmap* a_pBitmap, LPCTSTR a_pFileType, IStream *a_stream)
	{
		ASSERT(a_pBitmap);
		if (!a_pBitmap)
		{
			LogErrorTrace(__FILE__, __LINE__, "SaveBitmapToStream: invalid file a_pBitmap");
			return FALSE;
		}
		ASSERT(a_stream);
		if (!a_stream)
		{
			LogErrorTrace(__FILE__, __LINE__, "SaveBitmapToStream: invalid file a_stream");
			return FALSE;
		}

		// file extension
		CString strFileExt = a_pFileType;

		CString strClisdFormat(_T("image/"));
		if (strFileExt.IsEmpty())
		{
			strClisdFormat += _T("bmp");
		}
		else
		{
			strClisdFormat += strFileExt.Right(strFileExt.GetLength());
		}

		// Get encoder CLSID
		CLSID CLSIDImage;
		WCHAR* psClisdFormat = (WCHAR*)strClisdFormat.GetBuffer(strClisdFormat.GetLength());
		if (COTSHelper::GetEncoderClsid(psClisdFormat, &CLSIDImage) < 0)
		{
			LogErrorTrace(__FILE__, __LINE__, ("SaveBitmapToStream: Couldn't find CLSID for bitmap image: %s"), (LPCTSTR)strClisdFormat);
			ASSERT(FALSE);
			return FALSE;
		}

		// save
		Gdiplus::Status ret = a_pBitmap->Save(a_stream, &CLSIDImage);
		if (ret != Gdiplus::Ok)
		{
			LogErrorTrace(__FILE__, __LINE__, _T("SaveBitmapToStream: Save bitmap image failed, return %d."), (int)ret);
			ASSERT(FALSE);
			return FALSE;
		}

		// Ok, return TRUE
		return TRUE;
	}

	// Get encoder CLSID
	// following code from http://msdn.microsoft.com/en-us/library/windows/desktop/ms533843(v=vs.85).aspx
	// return -1 if fails
	int COTSHelper::GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
	{
		// number of image encoders
		UINT  num = 0;     
		// size of the image encoder array in bytes
		UINT  size = 0;         
		Gdiplus::GetImageEncodersSize(&num, &size);

		// fails if size of the image encoder array is 0
		if (size == 0)
		{
			LogErrorTrace(__FILE__, __LINE__, _T("GetEncoderClsid: Gdiplus::GetImageEncodersSize size of the image encoder array is 0."));
			return -1;
		}

		// The ImageCodecInfo class provides the necessary storage members and methods to retrieve all pertinent information 
		// about the installed image encoders and decoders (called coders)
		Gdiplus::ImageCodecInfo* pImageCodecInfo = NULL;
		pImageCodecInfo = (Gdiplus::ImageCodecInfo*)(malloc(size));	

		// fails if no enough memory to hold the ImageCodecInfo class
		if (pImageCodecInfo == NULL)
		{
			LogErrorTrace(__FILE__, __LINE__, _T("GetEncoderClsid: failed to malloc for the image. dize %d"), size);
			return -1;
		}

		// gets an array of ImageCodecInfo objects
		Gdiplus::GetImageEncoders(num, size, pImageCodecInfo);

		for (UINT j = 0; j < num; ++j)
		{
			if (wcscmp(pImageCodecInfo[j].MimeType, format) == 0)
			{
				*pClsid = pImageCodecInfo[j].Clsid;
				free(pImageCodecInfo);
				return j;  // Success
			}
		}

		// fails to get encoder CLSID
		free(pImageCodecInfo);
		return -1;  // Failure
	}

	// Finds the index of the string list.
	int COTSHelper::FindStringListIndex(CStringList& a_listStrList, LPCTSTR a_strItem, BOOL a_bNoCase /*= true*/)
	{
		POSITION pos = a_listStrList.GetHeadPosition();
		int index = 0;
		while (pos)
		{
			auto sValue = a_listStrList.GetNext(pos);

			if (a_bNoCase)
			{
				if (sValue.CompareNoCase(a_strItem) == 0)
				{
					return index;
				}
			}
			else
			{
				if (sValue.Compare(a_strItem) == 0)
				{
					return index;
				}
			}

			index++;
		}

		// can't find the string, return -1
		return -1;
	}

	// Finds the index of the string list.
	int COTSHelper::FindStringListIndex(std::vector<CString>& a_stringList, LPCTSTR a_sItem, BOOL a_bNoCase /*= true*/)
	{
		int index = 0;
		for (auto sValue : a_stringList)
		{
			if (a_bNoCase)
			{
				if (sValue.CompareNoCase(a_sItem) == 0)
				{
					return index;
				}
			}
			else
			{
				if (sValue.Compare(a_sItem) == 0)
				{
					return index;
				}
			}

			index++;
		}

		// can't find the string, return -1
		return -1;
	}

	// open file
	BOOL COTSHelper::ShellOpenFile(LPCTSTR a_strPathName)
	{
		return ShellExecuteCommand(a_strPathName);
	}
	BOOL COTSHelper::ShellExecuteCommand(LPCTSTR a_strPathName, LPCTSTR a_strParam /*= NULL*/)
	{
		// pathname can't be an empty string
		CString strPathName = a_strPathName;
		ASSERT(strPathName);
		if (strPathName.IsEmpty())
		{
			LogErrorTrace(__FILE__, __LINE__, _T("ShellExecuteCommand: a_strPathName is an empty string."));
			return FALSE;
		}

		CString strParam = a_strParam;
		if (!strParam.IsEmpty())
		{
			LogTrace(__FILE__, __LINE__, _T("ShellExecuteCommand: open %s, param %s."), strPathName, strParam);
		}
		else
		{
			LogTrace(__FILE__, __LINE__, _T("ShellExecuteCommand: open %s."), strPathName);
		}

		// "ShellExecute" Performs an operation on a specified file
		// open the file
		HINSTANCE result = ShellExecute(NULL, _T("open"), strPathName, a_strParam, NULL, SW_SHOWNORMAL);

#pragma warning(disable: 4311)
#pragma warning(disable: 4302)
		int nResult = reinterpret_cast<int>(result);
#pragma warning(default: 4311)
#pragma warning(default: 4302)

		if (nResult <= 32)
		{
			// error, open file failed
			switch (nResult)
			{
				case ERROR_FILE_NOT_FOUND:
					// The specified file was not found.
				case ERROR_PATH_NOT_FOUND:
					// The specified path was not found.
					LogErrorTrace(__FILE__, __LINE__, _T("ShellExecuteCommand: can't find the path/file %s."), strPathName );
					break;

				default:
					// The operating system denied access to the specified file.
					LogErrorTrace(__FILE__, __LINE__, _T("ShellExecuteCommand: the operating system denied access to the file %s."), strPathName);
			}

			// return FALSE
			ASSERT(FALSE);
			return FALSE;
		}

		// ok, return TRUE
		return TRUE;
	}

	// get machine id
	CString COTSHelper::GetMachineId()
	{
		// machine id string
		CString strMachineId;

		MasterHardDiskSerial hardDiskSerial;

		// get computer hardware id (hard disk id)
		if (hardDiskSerial.getHardDriveComputerID() != 0)
		{
			// get computer hardware id 
			strMachineId = hardDiskSerial.GetHardDriveComputerIdAsString();
		}
		else
		{
			// failed to get hardware id, using default one
			LogErrorTrace(__FILE__, __LINE__, _T("GetMachineId: could not identify the computer id."));
			strMachineId = hardDiskSerial.GetDefaultComputerIdString();
		}

		// return machine id string
		return strMachineId;
	}

	// send email
	BOOL COTSHelper::SendEmail(LPCTSTR a_strEmailAddress, LPCTSTR a_strTitle, LPCTSTR a_strBody)
	{
		// form email string
		CString strEmail;
		strEmail.Format(_T("mailto:%s?Subject=%s&body=%s"), a_strEmailAddress, a_strTitle, a_strBody);

		// send email
		HINSTANCE result = ShellExecute(NULL, _T("open"), strEmail, NULL, NULL, SW_SHOW);

		// From MSDN Documentation, ShellExecute returns >32 on success, or an error code <= 32 otherwise
#pragma warning(disable: 4311)
#pragma warning(disable: 4302)
		int nResult = reinterpret_cast<int>(result);
#pragma warning(default: 4311)
#pragma warning(default: 4302)

		return nResult > 32;
	}

	// string conventions
	int COTSHelper::CharToWChar(const char* a_psSource, wchar_t* a_psTarget)
	{
		size_t iRet = 0;
		size_t nLen = strlen(a_psSource) + 1;
		mbstowcs_s(&iRet, a_psTarget, nLen, a_psSource, nLen);

		return (int)iRet;
	}
	int COTSHelper::WCharToChar(const wchar_t* a_psSource, char* a_psTarget)
	{
		size_t iRet = 0;
		size_t nLen = wcslen(a_psSource) * 2 + 2;
		wcstombs_s(&iRet, a_psTarget, nLen, a_psSource, nLen);

		return (int)iRet;
	}
	CString COTSHelper::CharToString(const char* a_psSource)
	{
		size_t nLen = strlen(a_psSource) + 1;
		wchar_t* psDest = new wchar_t[nLen];

		CString sRet(_T(""));
		if (CharToWChar(a_psSource, psDest) > 0)
		{
			sRet = psDest;
		}

		delete[] psDest;

		return sRet;
	}
	DWORD COTSHelper::ConvStreamToByteArr(IStream *stream, BYTE **byte)
	{
		DWORD dwSize = 0;
		LARGE_INTEGER move = { 0 };
		STATSTG stats = { 0 };

		stream->Stat(&stats, 0);
		dwSize = (DWORD)stats.cbSize.QuadPart;
		*byte = new BYTE[dwSize];
		stream->Seek(move, STREAM_SEEK_SET, NULL);
		stream->Read((void*)*byte, dwSize, NULL);
		return dwSize;
	}

	// time strings
	// return "-" if the date time is invalid
	CString COTSHelper::GetDateTimeString(const COleDateTime& a_DateTime)
	{
		auto nStatus = a_DateTime.GetStatus();
		if (nStatus == COleDateTime::valid && a_DateTime != 0)
		{
			return a_DateTime.Format(_T("%H:%M:%S %d-%m-%y"));
		}

		return _T("-");
	}
	CString COTSHelper::GetTimeSpanString(const COleDateTimeSpan& a_TimeSpan, BOOL a_bFixLenth /*= FALSE*/)
	{
		CString strRet;
		if (a_bFixLenth)
		{
			strRet.Format(_T("%dh:%dm:%ds"), a_TimeSpan.GetHours(), a_TimeSpan.GetMinutes(), a_TimeSpan.GetSeconds());
		}
		if (a_TimeSpan.GetDays() > 0)
		{			
			strRet.Format(_T("%dd %dh:%dm:%ds"), a_TimeSpan.GetDays(), a_TimeSpan.GetHours(), a_TimeSpan.GetMinutes(), a_TimeSpan.GetSeconds());
		}
		else if (a_TimeSpan.GetHours() > 0)
		{
			strRet.Format(_T("%dh:%dm:%ds"), a_TimeSpan.GetHours(), a_TimeSpan.GetMinutes(), a_TimeSpan.GetSeconds());
		}
		else if (a_TimeSpan.GetMinutes() > 0)
		{
			strRet.Format(_T("%dm:%ds"), a_TimeSpan.GetMinutes(), a_TimeSpan.GetSeconds());
		}
		else
		{
			strRet.Format(_T("%ds"), a_TimeSpan.GetSeconds());
		}

		return strRet;
	}

	COleDateTime COTSHelper::GetDateTimeFromString(const CString & a_DateTime)
	{
		COleDateTime ole_time;
		ole_time.ParseDateTime(a_DateTime);
		return ole_time;
	}

	COleDateTimeSpan COTSHelper::GetTimeSpanFromString(const CString & a_TimeSpan, BOOL a_bFixLenth)
	{
		COleDateTimeSpan span;
		int days=0, hours=0, minutes=0, seconds=0;
		if (a_TimeSpan.Find(" ") != 0)
		{
			std::vector <CString > tString = SplitString(a_TimeSpan, " ");
			days = std::stoi( tString[0].GetBuffer());
			std::vector<CString> tString1 = SplitString(tString[1], ":");
			hours = std::stoi(tString1[0].GetBuffer());
			minutes = std::stoi(tString1[1].GetBuffer());
			seconds = std::stoi(tString1[2].GetBuffer());
		}
		else
		{
			std::vector<CString> tString1 = SplitString(a_TimeSpan, ":");
			hours = std::stoi(tString1[0].GetBuffer());
			minutes = std::stoi(tString1[1].GetBuffer());
			seconds = std::stoi(tString1[2].GetBuffer());
		}
		span.SetDateTimeSpan(days, hours, minutes, seconds);
		return span;
	}

	// waiting
	void COTSHelper::Waiting(long a_nMilliseconds)
	{
#pragma warning(disable: 28159)
		DWORD nStart = GetTickCount();
		DWORD nEnd = nStart;
		do
		{
			nEnd = GetTickCount();
		} while (nEnd >= nStart && nEnd <= (nStart + a_nMilliseconds + 1));
#pragma warning(default: 28159)
	}

	// Get file version
	// File Version should be format <Major version>.<Minor version>.<Build version>, like 1.2.3
	DWORD COTSHelper::GetVersionFromString(LPCTSTR a_sVersion)
	{
		int nMajorVersion = 0;
		int nMinorVersion = 0;
		int nBuildVersion = 0;

		DWORD nVersion = 0;
		if( GetMajorVersionFromString(a_sVersion, nMajorVersion) &&
			GetMinorVersionFromString(a_sVersion, nMinorVersion) &&
			GetBuildVersionFromString(a_sVersion, nBuildVersion))
		{ 
			nVersion = nMajorVersion * 10000 + nMinorVersion * 100 + nBuildVersion;
		}

		return nVersion;
	}
	BOOL COTSHelper::GetMajorVersionFromString(LPCTSTR a_sVersion, int& a_nVersion)
	{
		// version string
		CString strVersion(a_sVersion);

		// get major file version string position
		int nPosFirst = strVersion.Find(_T('.'));
		if (nPosFirst <= 0)
		{
			// failed to find major file version
			LogErrorTrace(__FILE__, __LINE__, _T("GetMajorVersionFromString: failed to find the major file version string: %s"), strVersion);
			return FALSE;
		}

		// get major file version string
		CString strMajorVersion = strVersion.Left(nPosFirst);

		// the major file version string can't be empty
		strMajorVersion.Trim();
		if (strMajorVersion.IsEmpty())
		{
			// failed to find major file version
			LogErrorTrace(__FILE__, __LINE__, _T("GetMajorVersionFromString: failed to find the major file version string: %s"), strVersion);
			return FALSE;
		}

		// convert the major version string to major version number
		if (!COTSHelper::StringToInt(strMajorVersion, a_nVersion))
		{
			// failed to convert the major file version string to number
			LogErrorTrace(__FILE__, __LINE__, _T("GetMajorVersionFromString: failed to convert the major file version string to number: %s (%s)."), strMajorVersion, strVersion);
			return FALSE;
		}
		
		// ok, return TRUE
		return TRUE;
	}
	BOOL COTSHelper::GetMinorVersionFromString(LPCTSTR a_sVersion, int& a_nVersion)
	{
		// version string
		CString strVersion(a_sVersion);

		// get major file version string position first
		int nPosFirst = strVersion.Find(_T('.'));
		if (nPosFirst < 0)
		{
			// failed to find major file version string
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to find major version string: %s."), strVersion);
			return FALSE;
		}

		// get minor file version string position
		int nPosSecont = strVersion.Find(_T('.'), nPosFirst + 1);
		int nStrLength = nPosSecont - nPosFirst - 1;
		if (nStrLength <= 0)
		{
			// failed to find minor file version string
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to find minor file version string: %s."), strVersion);
			return FALSE;
		}

		// get minor file version string
		CString strMinorVersion = strVersion.Mid(nPosFirst + 1, nStrLength);

		// the minor file version string can't be empty
		strMinorVersion.Trim();
		if (strMinorVersion.IsEmpty())
		{
			// failed to find minor file version string
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to find minor file version string: %s."), strVersion);
			return FALSE;
		}

		// convert the minor version string to minor version number
		if (!COTSHelper::StringToInt(strMinorVersion, a_nVersion))
		{
			// failed to convert the major file version string to number
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to convert the minor file version string to number: %s (%s)."), strMinorVersion, strVersion);
			return FALSE;
		}

		// ok, return TRUE
		return TRUE;
	}
	BOOL COTSHelper::GetBuildVersionFromString(LPCTSTR a_sVersion, int& a_nBuild)
	{
		// version string
		CString strVersion(a_sVersion);

		// get major file version string position first
		int nPosFirst = strVersion.Find(_T('.'));
		if (nPosFirst < 0)
		{
			// failed to find major file version string
			LogErrorTrace(__FILE__, __LINE__, _T("GetBuildVersionFromString: failed to find major version string: %s."), strVersion);
			return FALSE;
		}

		// get minor file version string position
		int nPosSecond  = strVersion.Find(_T('.'), nPosFirst + 1);
		if (nPosSecond < 0)
		{
			// failed to find minor file version string
			LogErrorTrace(__FILE__, __LINE__, _T("GetBuildVersionFromString: failed to find minor file version string: %s."), strVersion);
			return FALSE;
		}

		// get build string position
		int nStrLength = strVersion.GetLength() - nPosSecond - 1;
		if (nStrLength <= 0)
		{
			// failed to find build string
			LogErrorTrace(__FILE__, __LINE__, _T("GetBuildVersionFromString: failed to find build string: %s."), strVersion);
			return FALSE;
		}

		// get build string
		CString strBuild = strVersion.Right(nStrLength);

		// build string can't be empty
		strBuild.Trim();
		if (strBuild.IsEmpty())
		{
			// failed to convert the build string to number
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to find the build string: %s."), strVersion);
			return FALSE;
		}

		// convert the build string to build number
		if (!COTSHelper::StringToInt(strBuild, a_nBuild))
		{
			// failed to convert the build string to number
			LogErrorTrace(__FILE__, __LINE__, _T("GetMinorVersionFromString: failed to convert the build string to number: %s (%s)."), strBuild, strVersion);
			return FALSE;
		}

		// ok, return TRUE
		return TRUE;
	}

	// get file modify string
	CString COTSHelper::GetFileWriteTime(LPCTSTR a_strPathName)
	{
		// file modify string
		CString strFileModifyString = _T("");

		// get file information structure
		WIN32_FIND_DATA   FileStruct;
		HANDLE   hfile;
		hfile = FindFirstFile(a_strPathName, &FileStruct);

		// check if found the file ok
		if (hfile == INVALID_HANDLE_VALUE)
		{
			// failed to find the file
			LogErrorTrace(__FILE__, __LINE__, _T("GetFileWriteTime: failed to find the file: %s."), a_strPathName);
			return strFileModifyString;
		}

		// last modify time
		FILETIME ft = FileStruct.ftLastWriteTime;

		// get file modify string
		CTime time(ft);
		strFileModifyString.Format(_T("%d/%d/%d %d:%d"), time.GetYear(), time.GetMonth(), time.GetDay(), time.GetHour(), time.GetMinute());

		// return file modify string 
		return strFileModifyString;
	}

	// load text file
	std::vector<std::string> COTSHelper::LoadTextFileToSTDList(CString a_strPathName, int a_nLine/*= -1*/)
	{
		// string list
		std::vector<std::string> listStr;

		// load 
		try
		{
			// open the file
			FILE *fStream;
			errno_t err = _tfopen_s(&fStream, a_strPathName, _T("rt,ccs=UNICODE"));
			if (err != 0) return listStr; // failed..CString sRead;
			CStdioFile file(fStream);

			// read the file
			CString strLine;
			int nLine = 0; 
			while (file.ReadString(strLine) && nLine != a_nLine)
			{
				// get a line

				// remove comments
				int nCommentPos = strLine.Find(OTS_TEXT_FILE_COMMENT);
				if (nCommentPos != -1)
				{
					// remove comments
					strLine = strLine.Left(nCommentPos);
				}

				// process the line
				strLine.Trim();

				// jump over empty lines
				if (strLine)
				{
					continue;
				}

				// add the string into string list
				std::string strSTDLine((LPCTSTR)strLine);
				listStr.push_back(strSTDLine);

				// got a line
				++nLine;
			}
		}
		catch (CFileException* pe)
		{
			pe->Delete();
			return listStr;
		}

		// return string list
		return listStr;
	}
	std::vector<CString> COTSHelper::LoadTextFileToCStingList(CString a_strPathName, int a_nLine /*= -1*/)
	{
		// string list
		std::vector<CString> listStr;

		// load 
		try
		{
			// open the file
			CStdioFile file;
			file.Open(a_strPathName, CFile::modeRead | CFile::shareDenyWrite);

			// read the file
			CString strLine;
			int nLine = 0;
			while (file.ReadString(strLine) && nLine != a_nLine)
			{
				// get a line

				// remove comments
				int nCommentPos = strLine.Find(OTS_TEXT_FILE_COMMENT);
				if (nCommentPos != -1)
				{
					// remove comments
					strLine = strLine.Left(nCommentPos);
				}

				// process the line
				strLine.Trim();

				// jump over empty lines
				if (strLine.IsEmpty())
				{
					continue;
				}

				listStr.push_back(strLine);
			}

			file.Close();
		}
		catch (CFileException* pe)
		{
			pe->Delete();
			return listStr;
		}

		// return string list
		return listStr;
	}

	// split a string
	// std::string& a_sSource -- source string
	// char a_cTok a_cSep -- separator
	std::vector<std::string> COTSHelper::SplitSTDString(std::string& a_sSource, char a_cSep)
	{
		// string list
		std::vector<std::string> listStr;
		std::stringstream strSource(a_sSource);
		std::string str;

		// seperate a string from the source string
		while (getline(strSource, str, a_cSep))
		{
			// get the string ok, add the string into the string list
			listStr.push_back(str);
		}

		// return string list
		return listStr;
	}
	// const CString& a_sSource
	// LPCTSTR a_sSep -- separator 
	std::vector<CString> COTSHelper::SplitString(const CString& a_strSource, LPCTSTR a_strSep)
	{
		// string list
		std::vector<CString> listString;

		// source string
		CString strSource = a_strSource;

		// find the first separator
		int nPosLast = 0;
		auto nPos = strSource.Find(a_strSep, nPosLast);

		// found the separator?
		while (nPos >= nPosLast)
		{
			// there is no string between two seperator if nPos == nPosLast
			if (nPos == nPosLast)
			{
				listString.push_back(_T(""));
				nPosLast++;
			}
			else
			{
				// get the string between two separator
				CString strValue = strSource.Mid(nPosLast, nPos - nPosLast);
				strValue.Trim();

				// add the string into the string list
				listString.push_back(strValue);

				nPosLast = nPos + 1;
			}

			// try to find the next separator
			nPos = strSource.Find(a_strSep, nPosLast);
		}

		// push the last one into the string list
		CString strLastValue = strSource.Right(strSource.GetLength() - nPosLast);
		strLastValue.Trim();
		listString.push_back(strLastValue);

		// return the string list
		return listString;
	}

	// cut of the string to make sure that it will be never over the length
	void COTSHelper::EnsureStringLengthNoMoreThan(CString& a_str, int a_nMaxLength)
	{
		auto len = a_str.GetLength();
		if (len > a_nMaxLength)
		{
			a_str.Truncate(a_nMaxLength);
		}
	}

	// trim std string
	void COTSHelper::TrimSTDString(std::string& a_sString, char a_cTrimChar /*= ' '*/)
	{
		size_t first = a_sString.find_first_not_of(a_cTrimChar);
		size_t last = a_sString.find_last_not_of(a_cTrimChar);
		if (first != std::string::npos || last != std::string::npos)
		{
			auto sTrimString = a_sString.substr(first, (last - first + 1));

			a_sString = sTrimString;
		}
	}

	// get file name list in a folder
	BOOL COTSHelper::GetFileNameList(CString a_strFolderName, CString a_strFileType,std::vector<CString>& a_listFileName)
	{
		// get file name
		a_strFolderName += "*";
		a_strFolderName += a_strFileType;
		
		
		try
		{
			//find first file
			WIN32_FIND_DATA FindFileData;
			HANDLE file = FindFirstFile(a_strFolderName.GetBuffer(), &FindFileData);

			//find other file
			if (file != INVALID_HANDLE_VALUE)
			{
				a_listFileName.push_back(FindFileData.cFileName);
				BOOL bState = FALSE;
				bState = FindNextFile(file, &FindFileData);
				while (bState)
				{
					a_listFileName.push_back(FindFileData.cFileName);
					bState = FindNextFile(file, &FindFileData);
				}
			}
		}
		catch (CFileException* pe)
		{
			pe->Delete();
			return FALSE;
		}

		return TRUE;

	}

	std::string COTSHelper::GetSystemTime()
	{
		SYSTEMTIME m_time;
		GetLocalTime(&m_time);
		char szDateTime[100] = { 0 };
		sprintf(szDateTime, "%02d-%02d-%02d %02d:%02d:%02d", m_time.wYear, m_time.wMonth,
			m_time.wDay, m_time.wHour, m_time.wMinute, m_time.wSecond);
		std::string time(szDateTime);
		return time;
	}
	

}