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#ifndef CHROME_COMMON_TIME_FORMAT_H__
#define CHROME_COMMON_TIME_FORMAT_H__

// This file defines methods to format time values as strings.

#include <string>

#include "unicode/smpdtfmt.h"

class Time;
class TimeDelta;

class TimeFormat {
 public:
  // Returns a localized string of approximate time remaining. The conditions
  // are simpler than PastTime since this is used for in-progress operations
  // and users have different expectations of units.
  // Ex: "3 mins left", "2 days left".
  static std::wstring TimeRemaining(const TimeDelta& delta);

  // Same as TimeRemaining without the "left".
  static std::wstring TimeRemainingShort(const TimeDelta& delta);

  // For displaying a relative time in the past.  This method returns either
  // "Today", "Yesterday", or an empty string if it's older than that.
  //
  // TODO(brettw): This should be able to handle days in the future like
  //    "Tomorrow".
  // TODO(tc): This should be able to do things like "Last week".  This
  //    requires handling singluar/plural for all languages.
  //
  // The second parameter is optional, it is midnight of "Now" for relative day
  // computations: Time::Now().LocalMidnight()
  // If NULL, the current day's midnight will be retrieved, which can be
  // slow. If many items are being processed, it is best to get the current
  // time once at the beginning and pass it for each computation.
  static std::wstring RelativeDate(const Time& time,
                                   const Time* optional_midnight_today);
};

#endif  // CHROME_COMMON_TIME_FORMAT_H__