#include <windows.h>
#include "logger.h"


#define _INTERNAL_LOG_NAME	L"\\touch-proxy.log"

void WriteFileWChar(HANDLE hFile, TCHAR* buf)
{
	char cbuf[1025];
	DWORD w = wcslen(buf);
	w = WideCharToMultiByte(CP_ACP, 0, buf, w, cbuf, sizeof(cbuf), NULL, NULL);
	WriteFile(hFile, cbuf, w, (LPDWORD)&w, NULL);
}

TCHAR* hLogFileName = 0;
static HANDLE hLogFile = 0;
void LogEventFile(LPCTSTR str, ...)
{
	if (str == NULL) return;

	if (!hLogFileName)
	{
		TCHAR buf[MAX_PATH+1];
		wcscpy(buf, L"");
		wcscat(buf, _INTERNAL_LOG_NAME);
		hLogFileName = (TCHAR*)malloc(sizeof(TCHAR)*wcslen(buf)+1);
		wcscpy(hLogFileName, buf);
		hLogFile = CreateFile(hLogFileName, GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
		SetFilePointer(hLogFile, 0, NULL, FILE_END);
		_LOG(L"New log begins...\n");
	}
	if (!hLogFile && hLogFileName)
	{
		hLogFile = CreateFile(hLogFileName, GENERIC_WRITE | GENERIC_READ, 0, NULL, OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, 0);
		SetFilePointer(hLogFile, 0, NULL, FILE_END);
	}

	if (hLogFile)
	{
		TCHAR buf[1025];
		SYSTEMTIME stime;

		GetLocalTime(&stime);
		wsprintf(buf, L"%02d-%02d-%02d %02d:%02d:%02d ",
			stime.wYear, stime.wMonth, stime.wDay, stime.wHour, stime.wMinute, stime.wSecond);
		WriteFileWChar(hLogFile, buf);

		va_list argptr;
		va_start(argptr, str);
		HRESULT ecode;
		if (FAILED(ecode=StringCchVPrintf(buf, 1100, str, argptr))) 
			StringCchPrintf(buf, 1100, L"StringCchVPrintf error: %d\n", ecode);
		va_end(argptr);
		WriteFileWChar(hLogFile, buf);

#ifdef LOG_EXCLUSIVE
		FlushFileBuffers(hLogFile);
#else
		CloseHandle(hLogFile);
		hLogFile = 0;
#endif
	}
}

void LogEventDebug(LPCTSTR str, ...)
{
	if (str == NULL) return;
	TCHAR buf[1100];
	va_list argptr;
	va_start(argptr, str);
	HRESULT ecode;
	if (FAILED(ecode=StringCchVPrintf(buf, 1100, str, argptr))) 
		StringCchPrintf(buf, 1100, L"StringCchVPrintf error: %d\n", ecode);
	va_end(argptr);
	OutputDebugString(buf);
}


void LogEventNull(LPCTSTR str, ...)
{
}