public static List <DateRange> SubtractDates(this DateRange firstDateRange, DateRange secondDateRange, bool shouldExcludeBounds)
{
DateRange firstMidnightDateRange = firstDateRange.AsMidnightDateRange();
DateRange secondMidnightDateRange = secondDateRange.AsMidnightDateRange();
if (secondMidnightDateRange.Intersects(firstMidnightDateRange, shouldExcludeBounds))
{
var resultDateRanges = new List <DateRange>();
// подневная тарификация
if (shouldExcludeBounds)
{
if (firstMidnightDateRange.StartDate < secondMidnightDateRange.StartDate)
{
resultDateRanges.Add(new DateRange(firstMidnightDateRange.StartDate, secondMidnightDateRange.StartDate.AddDays(-1)));
}
if (firstMidnightDateRange.EndDate > secondMidnightDateRange.EndDate)
{
resultDateRanges.Add(new DateRange(secondMidnightDateRange.EndDate.AddDays(1), firstMidnightDateRange.EndDate));
}
return(resultDateRanges);
}
if (firstMidnightDateRange.StartDate < secondMidnightDateRange.StartDate)
{
resultDateRanges.Add(new DateRange(firstMidnightDateRange.StartDate, secondMidnightDateRange.StartDate));
}
if (firstMidnightDateRange.EndDate > secondMidnightDateRange.EndDate)
{
resultDateRanges.Add(new DateRange(secondMidnightDateRange.EndDate, firstMidnightDateRange.EndDate));
}
return(resultDateRanges);
}
return(new List <DateRange> {
new DateRange(firstMidnightDateRange.StartDate, firstMidnightDateRange.EndDate)
});
}
