public static String toReadableTime(
      long seconds,
      String secondSaid,
      String secondsSaid,
      String minuteSaid,
      String minutesSaid,
      String hourSaid,
      String hoursSaid,
      String daySaid,
      String daysSaid) {
    long day = TimeUnit.SECONDS.toDays(seconds);
    long hours = TimeUnit.SECONDS.toHours(seconds) - (day * 24);
    long minute = TimeUnit.SECONDS.toMinutes(seconds) - (TimeUnit.SECONDS.toHours(seconds) * 60);
    long second = TimeUnit.SECONDS.toSeconds(seconds) - (TimeUnit.SECONDS.toMinutes(seconds) * 60);
    String newSeconds = second == 1 ? "1 " + secondSaid : second + " " + secondsSaid;
    String newMinutes = minute == 1 ? "1 " + minuteSaid : minute + " " + minutesSaid;
    String newHours = hours == 1 ? "1 " + hourSaid : hours + " " + hoursSaid;
    String newDays = day == 1 ? "1 " + daySaid : day + " " + daysSaid;
    if (day == 0) {
      if (hours == 0) {
        if (minute == 0) {
          return newSeconds;
        } else {
          return newMinutes + " " + (second == 0 ? "" : newSeconds);
        }
      } else {
        return newHours
            + " "
            + (minute == 0 ? "" : newMinutes)
            + " "
            + (second == 0 ? "" : newSeconds);
      }
    } else {
      return newDays
          + " "
          + (hours == 0 ? "" : newHours)
          + " "
          + (minute == 0 ? "" : newMinutes)
          + " "
          + (second == 0 ? "" : newSeconds);
    }
  }

  public static long parseTimeToSeconds(String string) {
    if (string == null || string.isEmpty()) {
      return -1;
    }
    char[] c = string.toCharArray();
    if (!isInt(c[0])) {
      return -1;
    }
    string = string.replaceAll("[^0-9smhdw]", "");
    if (string.isEmpty()) {
      return -1;
    }
    if (string.contains("w")) {
      string = string.replaceAll("[^0-9]", "");
      if (string.isEmpty()) {
        return -1;
      }
      return TimeUnit.DAYS.toSeconds(Long.parseLong(string) * 7);
    }
    TimeUnit unit =
        string.contains("d")
            ? TimeUnit.DAYS
            : string.contains("h")
                ? TimeUnit.HOURS
                : string.contains("m") ? TimeUnit.MINUTES : TimeUnit.SECONDS;
    string = string.replaceAll("[^0-9]", "");
    if (string.isEmpty()) {
      return -1;
    }
    return unit.toSeconds(Long.parseLong(string));
  }

  private static boolean isInt(char c) {
    return c == '0' || c == '1' || c == '2' || c == '3' || c == '4' || c == '5' || c == '6'
        || c == '7' || c == '8' || c == '9';
  }