private static TimeSpan AddTo(TimeSpan timeSpan, string numberWords, UnitOfTime unit)
{
var number = NumbersHelper.ParseNumber(numberWords);
switch (unit)
{
case UnitOfTime.Second: return(timeSpan.Add(TimeSpan.FromSeconds(number)));
case UnitOfTime.Minute: return(timeSpan.Add(TimeSpan.FromMinutes(number)));
case UnitOfTime.Hour: return(timeSpan.Add(TimeSpan.FromHours(number)));
case UnitOfTime.Day: return(timeSpan.Add(TimeSpan.FromDays(number)));
case UnitOfTime.Week: return(timeSpan.Add(TimeSpan.FromDays(number * 7)));
}
return(timeSpan);
}
public static TimeSpan WordsToTimeSpan(string timeString)
{
var timeWords = timeString.Replace("-", "").Split(' ');
var numberBuffer = String.Empty;
var resultTimeSpan = new TimeSpan();
foreach (var word in timeWords)
{
if (NumbersHelper.IsNumber(word))
{
numberBuffer = $"{numberBuffer} {word}";
}
else if (IsTimeWord(word, out var unitOfTime))
{
resultTimeSpan = AddTo(resultTimeSpan, numberBuffer, unitOfTime);
numberBuffer = String.Empty;
}
}
return(resultTimeSpan);
}
