#include "pch.h"
#include "Logger.h"

CLogger& CLogger::Instance()
{
    static CLogger instance;
    return instance;
}

CLogger::CLogger()
{
	OpenLogFile();
}

CLogger::~CLogger()
{
    CloseLogFile();
}

void CLogger::OpenLogFile()
{
    CSingleLock lock(&m_csLogLock, TRUE);

    CTime now = CTime::GetCurrentTime();
    CString strLogDir = _T("Log");

    if (!PathFileExists(strLogDir)) {
        CreateDirectory(strLogDir, NULL);
    }

    CString strNewPath;
    strNewPath.Format(_T("%s\\SG_%04d%02d%02d.log"), strLogDir, now.GetYear(), now.GetMonth(), now.GetDay());

    if (m_strCurrentLogPath.CompareNoCase(strNewPath) != 0 || m_logFile.m_pStream == nullptr) {
        if (m_logFile.m_pStream) {
            m_logFile.Flush();
            m_logFile.Close();
        }

        if (m_logFile.Open(strNewPath,
            CFile::modeCreate | CFile::modeNoTruncate | CFile::modeWrite | CFile::typeBinary)) {

            if (m_logFile.GetLength() == 0) {
                WCHAR bom = 0xFEFF;
                m_logFile.Write(&bom, sizeof(WCHAR));
            }

            m_logFile.SeekToEnd();
            m_strCurrentLogPath = strNewPath;
        }
    }
}

void CLogger::WriteLine(CString str)
{
    CSingleLock lock(&m_csLogLock, TRUE);

    OpenLogFile();

    if (m_logFile.m_pStream) {
        CTime now = CTime::GetCurrentTime();
        CString strTime;
        strTime.Format(_T("[%02d:%02d:%02d]"), now.GetHour(), now.GetMinute(), now.GetSecond());

        CString strLine = strTime + str + _T("\r\n");
        m_logFile.Write((LPCTSTR)strLine, strLine.GetLength() * sizeof(WCHAR));
    }
}

void CLogger::CloseLogFile()
{
    CSingleLock lock(&m_csLogLock, TRUE);

    if (m_logFile.m_pStream) {
        m_logFile.Flush();
        m_logFile.Close();
        m_strCurrentLogPath.Empty();
    }
}