public static long GetDurationInSeconds(
string durationStr,
long secondsPerDay,
long secondsPerWeek,
DurationVariant defaultUnit)
{
long totalSeconds = 0;
if (durationStr == null || string.IsNullOrWhiteSpace(durationStr.Trim()))
{
return(0);
}
durationStr = durationStr.Trim().ToLower();
int multiplier = durationStr.StartsWith("-") ? -1 : 1;
string[] st = durationStr.Split(' ');
foreach (string word in st)
{
totalSeconds += GetSecondsPerDuration(word, secondsPerDay, secondsPerWeek, defaultUnit);
}
return(multiplier * totalSeconds);
}
public static long GetSeconds(this DurationVariant duration, long secondsPerDay, long secondsPerWeek)
{
switch (duration)
{
case DurationVariant.SECOND:
case DurationVariant.MINUTE:
case DurationVariant.HOUR:
return((long)duration);
case DurationVariant.DAY:
return(secondsPerDay);
case DurationVariant.WEEK:
return(secondsPerWeek);
case DurationVariant.MONTH:
return(31 * secondsPerDay);
case DurationVariant.YEAR:
return(52 * secondsPerWeek);
default:
return((long)duration);
}
}
public static TimeSpan GetDurationInTimeSpan(
string durationStr,
TimeSpan dayTimeSpan,
TimeSpan weekTimeSpan,
DurationVariant defaultUnit)
{
return(TimeSpan.FromSeconds(
GetDurationInSeconds(
durationStr,
(long)dayTimeSpan.TotalSeconds,
(long)weekTimeSpan.TotalSeconds,
defaultUnit)));
}
public static string ValidateDurationUnit(string durationString, DurationVariant duration)
{
if (durationString.Length > 1)
{
string singular = duration.ToString().ToLower();
string plural = duration.ToString().ToLower() + "s";
if (durationString.Contains(plural))
{
return(durationString.Substring(durationString.IndexOf(plural)));
}
else if (durationString.Contains(singular))
{
return(durationString.Substring(durationString.IndexOf(singular)));
}
else
{
throw new Exception("Not a valid durationString string");
}
}
return(durationString.Substring(1));
}
private static long GetSecondsPerDuration(
string duration,
long secondsPerDay,
long secondsPerWeek,
DurationVariant defaultUnit)
{
long timePerUnit = 0;
try
{
timePerUnit = long.Parse(duration.Trim()) * defaultUnit.GetSeconds(secondsPerDay, secondsPerWeek);
}
catch (Exception)
{
Match m = DURATION_PATTERN.Match(duration);
if (m.Success)
{
string numberAsString = m.Groups[1].Value;
int number = int.Parse(numberAsString);
string durationUnitAsString = m.Groups[2].Value;
long unit = GetSecondsFromDurationUnit(durationUnitAsString, secondsPerDay, secondsPerWeek);
long seconds = number * unit;
timePerUnit = seconds;
}
else
{
throw new Exception("Unable to parse duration string: " + duration);
}
}
return(timePerUnit);
}
