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// This file contains the declaration of the DateTime class.

#ifndef KML_BASE_DATE_TIME_H__
#define KML_BASE_DATE_TIME_H__

#include <time.h>
#include "kml/base/util.h"

// TODO: fix this for real.
#ifdef _WIN32
time_t timegm(struct tm* tm);
char* strptime(const char* buf, const char* format, struct tm* tm);
#endif

namespace kmlbase {

class DateTime {
 public:
  // xsd:datetime: 2008-10-03T09:25:42Z
  // TODO: date, gYearMonth, gYear
  static DateTime* Create(const string& str);

  // A convenience utility: Create() + GetTimeT().
  static time_t ToTimeT(const string& str);

  // POSIX time
  time_t GetTimeT() /* const */;

  // XML Schema 3.2.8 time
  string GetXsdTime() const;

  // XML Schema 3.2.9 date
  string GetXsdDate() const;

  // XML Schema 3.2.7 dateTime.
  string GetXsdDateTime() const;

 private:
  DateTime();
  template<int N>
  string DoStrftime(const char* format) const;
  bool ParseXsdDateTime(const string& xsd_date_time);
  struct tm tm_;
};

time_t DateTimeToTimeT(const string& date_time_str);

}  // end namespace kmlbase

#endif  // KML_BASE_DATE_TIME_H__
