#ifndef _utl_UTCDateTime_h_
#define _utl_UTCDateTime_h_

#include <utl/UTCDate.h>
#include <utl/TimeStamp.h>


namespace utl {

  /**
    \class UTCDateTime UTCDateTime.h utl/UTCDateTime.h

    \author Darko Veberic
    \date 22 Jul 2009
    \version $Id$
    \ingroup time
  */

  class UTCDateTime : public UTCDate {
  public:
    UTCDateTime()
      : UTCDate(), fHour(0), fMinute(0), fSecond(0), fNanosecond(0) { }

    UTCDateTime(const UTCDate& date,
                const int hour = 0, const int minute = 0, const int second = 0,
                const double nanosecond = 0)
      : UTCDate(date)
    { SetHMS(hour, minute, second, nanosecond); }

    UTCDateTime(const int year, const int month, const int day,
                const int hour = 0, const int minute = 0, const int second = 0,
                const double nanosecond = 0)
      : UTCDate(year, month, day)
    { SetHMS(hour, minute, second, nanosecond); }

    UTCDateTime(const TimeStamp& time);

    void
    Set(const int year, const int month, const int day,
        const int hour, const int minute, const int second,
        const double nanosecond = 0)
    {
      UTCDate::Set(year, month, day);
      SetHMS(hour, minute, second, nanosecond);
    }

    std::string GetInAugerFormat() const;

    std::string GetInXMLFormat() const;

    std::string GetInMySQLFormat() const;

    TimeStamp GetTimeStamp() const;

    int GetHour() const { return fHour; }

    int GetMinute() const { return fMinute; }

    int GetSecond() const { return fSecond; }

    double GetNanosecond() const { return fNanosecond; }

    /// seconds after Unix epoch (1 Jan 1970) without any leap corrections
    std::time_t GetUnixSecond() const
    { return UTCDate::GetUnixSecond(GetYear(), GetMonth(), GetDay(), fHour, fMinute, fSecond); }

    static UTCDateTime GetUnixEpoch() { return  UTCDate::GetUnixEpoch(); }

    static UTCDateTime GetGPSEpoch() { return UTCDate::GetGPSEpoch(); }

    static UTCDateTime Max();

    static UTCDateTime Min() { return GetGPSEpoch(); }

  private:
    void SetHMS(const int hour, const int minute, const int second,
                const double nanosecond = 0);

    std::istream& Parse(std::istream& is);

    int fHour;
    int fMinute;
    int fSecond;
    double fNanosecond;

    friend std::istream& operator>>(std::istream&, UTCDateTime&);
  };


  inline std::ostream& operator<<(std::ostream& os, const UTCDateTime& utc)
  { return os << utc.GetInXMLFormat(); }


  inline std::istream& operator>>(std::istream& is, UTCDateTime& utc)
  { return utc.Parse(is); }

}


#endif