// SystemTime.cpp
// 
// Revision Log
//
// Date       Who SAR     Notes
// ========== === ======= =====================================
// 2001-10-29 mph         Initial coding by Mark Henri of
//                        MPH Software - markhenri@attbi.com
//
//
#include "SystemTime.h"

#include <sstream>

CSystemTime::CSystemTime()
{
   Initialize();
}

CSystemTime::CSystemTime(int y, int m, int d, int h, int mn, int s, int ms)
{
}

CSystemTime::CSystemTime(const char* s)
{
   Parse(s);
}

CSystemTime::CSystemTime(const std::string& s)
{
   Parse(s.c_str());
}

CSystemTime::CSystemTime(SYSTEMTIME& o)
{
   wYear         = o.wYear;
   wMonth        = o.wMonth;
   wDayOfWeek    = o.wDayOfWeek;
   wDay          = o.wDay;
   wHour         = o.wHour;
   wMinute       = o.wMinute;
   wSecond       = o.wSecond;
   wMilliseconds = o.wMilliseconds;
}

CSystemTime::CSystemTime(CSystemTime& o)
{
   wYear         = o.wYear;
   wMonth        = o.wMonth;
   wDayOfWeek    = o.wDayOfWeek;
   wDay          = o.wDay;
   wHour         = o.wHour;
   wMinute       = o.wMinute;
   wSecond       = o.wSecond;
   wMilliseconds = o.wMilliseconds;
}

CSystemTime::CSystemTime(FILETIME& ft)
{
   Initialize();
   SYSTEMTIME st;
   FileTimeToSystemTime(&ft, &st);
   *this = st;
}

CSystemTime& CSystemTime::operator = (FILETIME o)
{
   Initialize();
   SYSTEMTIME st;
   FileTimeToSystemTime(&o, &st);
   *this = st;
   return *this;
}

CSystemTime& CSystemTime::operator = (SYSTEMTIME o)
{
   wYear         = o.wYear;
   wMonth        = o.wMonth;
   wDayOfWeek    = o.wDayOfWeek;
   wDay          = o.wDay;
   wHour         = o.wHour;
   wMinute       = o.wMinute;
   wSecond       = o.wSecond;
   wMilliseconds = o.wMilliseconds;
   return *this;
}

CSystemTime& CSystemTime::operator=(CSystemTime& o)
{
   wYear         = o.wYear;
   wMonth        = o.wMonth;
   wDayOfWeek    = o.wDayOfWeek;
   wDay          = o.wDay;
   wHour         = o.wHour;
   wMinute       = o.wMinute;
   wSecond       = o.wSecond;
   wMilliseconds = o.wMilliseconds;
   return *this;
}

CSystemTime::~CSystemTime()
{
}

CSystemTime::Initialize()
{
   wYear         = 0; 
   wMonth        = 0; 
   wDayOfWeek    = 0; 
   wDay          = 0;
   wHour         = 0; 
   wMinute       = 0; 
   wSecond       = 0; 
   wMilliseconds = 0;
}

CSystemTime& CSystemTime::operator = (const char* s)
{
   return Parse(s);
}

CSystemTime& CSystemTime::operator = (const std::string& s)
{
   return Parse(s.c_str());
}

bool CSystemTime::operator ==(CSystemTime& o)
{
   bool b = 
         wYear         == o.wYear
      && wMonth        == o.wMonth
      && wDay          == o.wDay
      && wHour         == o.wHour
      && wMinute       == o.wMinute
      && wSecond       == o.wSecond
      && wMilliseconds == o.wMilliseconds;
   return b;
}

// format: yyyy-mm-dd hh:mm:ss.mmm
//         01234567890123456789012
CSystemTime& CSystemTime::Parse(const char* s)
{
   Initialize(); // set everything to zero
   int len = strlen(s);

   if (len < 4)
      return *this;
   wYear          = atoi(s);

   if (len < 7)
      return *this;
   wMonth         = atoi(&(s[5]));

   wDayOfWeek     = 0;

   if (len < 10)
      return *this;
   wDay           = atoi(&(s[8]));

   if (len < 13)
      return *this;
   wHour          = atoi(&(s[11]));

   if (len < 16)
      return *this;
   wMinute        = atoi(&(s[14]));

   if (len < 19)
      return *this;
   wSecond        = atoi(&(s[17]));

   if (len < 23)
      return *this;
   wMilliseconds  = atoi(&(s[20]));

   return *this;
}

rval_psz CSystemTime::c_str()
{
   ostringstream os;
   os << *this;
   return os.str().c_str();
}

void CSystemTime::ConvertToLocal()
{
   TIME_ZONE_INFORMATION tzi;
   GetTimeZoneInformation(&tzi);

   SYSTEMTIME st1 = *this;
   if (! SystemTimeToTzSpecificLocalTime(&tzi, &st1, this))
   {
      //CFormatMessage m(GetLastError());
      //std::string s = m.GetMessage();
   }
}

/*
void CSystemTime::ConvertToUTC()
{
}
*/