public override ITimePeriod GetTimePeriod(DateTime baseDate)
{
var date = baseDate.Date;
var time = baseDate.TimeOfDay;
var namedEntity = string.Empty;
ITimeRange result = null;
var lowerText = Text.ToLower();
if (lowerText == "today")
{
result = new Day(date);
}
else if (lowerText == "tonight")
{
result = GetTimeOfDayPeriod(TimeOfDay.Night, date);
}
else if (lowerText == "last night")
{
result = GetTimeOfDayPeriod(TimeOfDay.Night, date.AddDays(-1));
}
else if (lowerText.StartsWith("yesterday"))
{
if (lowerText == "yesterday")
{
result = new Day(date.AddDays(-1));
}
else if (lowerText == "yesterday morning")
{
result = GetTimeOfDayPeriod(TimeOfDay.Morning, date.AddDays(-1));
}
else if (lowerText == "yesterday afternoon")
{
result = GetTimeOfDayPeriod(TimeOfDay.Afternoon, date.AddDays(-1));
}
}
else if (lowerText.StartsWith("tomorrow"))
{
if (lowerText == "tomorrow")
{
result = new Day(date.AddDays(1));
}
else if (lowerText == "tomorrow morning")
{
result = GetTimeOfDayPeriod(TimeOfDay.Morning, date.AddDays(1));
}
else if (lowerText == "tomorrow afternoon")
{
result = GetTimeOfDayPeriod(TimeOfDay.Afternoon, date.AddDays(1));
}
else if (lowerText == "tomorrow night")
{
result = GetTimeOfDayPeriod(TimeOfDay.Night, date.AddDays(1));
}
}
else if (lowerText.StartsWith("next ") || lowerText.StartsWith("last ") || lowerText.StartsWith("this"))
{
var pieces = lowerText.Split(' ');
if (pieces.Length == 2)
{
var inPast = pieces[0] == "last";
var inFuture = pieces[0] == "next";
namedEntity = pieces[1];
if (namedEntity == "week")
{
result = new Week(date);
if (inPast)
{
result = (result as Week).GetPreviousWeek();
}
else if (inFuture)
{
result = (result as Week).GetNextWeek();
}
}
else if (namedEntity == "month")
{
result = new Month(date);
if (inPast)
{
result = (result as Month).GetPreviousMonth();
}
else if (inFuture)
{
result = (result as Month).GetNextMonth();
}
}
else if (namedEntity == "year")
{
result = new Year(date);
if (inPast)
{
result = (result as Year).GetPreviousYear();
}
else if (inFuture)
{
result = (result as Year).GetNextYear();
}
}
}
}
else if (NamedDate.IsMatch(Text))
{
namedEntity = NamedDate.Match(Text).Value;
}
//Handle named entities (eg. "Wednesday" or "January")
if (!string.IsNullOrEmpty(namedEntity))
{
var inPast = lowerText.StartsWith("last ");
//TODO: Support "this" named entity (eg. "this March" is the March in the baseDate year)
if (DateComponent.GetWeekDayFromName(namedEntity) != -1)
{
var moment = DateComponent.GetNextDateFromWeekDay(namedEntity, date);
result = new Day(moment);
if (inPast)
{
result = new Day(moment.AddDays(-7));
}
}
else if (DateComponent.GetMonthFromName(namedEntity) != -1)
{
var moment = DateComponent.GetNextDateFromMonth(namedEntity, date);
result = new Month(moment);
if (inPast)
{
result = new Month(moment.AddMonths(-12));
}
}
}
return(result);
}
public override ITimePeriod GetTimePeriod(DateTime baseDate)
{
var startPoint = baseDate;
CalendarTimeRange sequenceInterval = null;
//Handle "every" as name/string value
var retrievedEvery = EveryRetrieve.Match(Text).Value;
if (retrievedEvery.Length > 0)
{
if (DateComponent.GetWeekDayFromName(retrievedEvery) != -1)
{
startPoint = DateComponent.GetNextDateFromWeekDay(retrievedEvery, baseDate);
sequenceInterval = new CalendarTimeRange(startPoint, new TimeSpan(7, 0, 0, 0));
}
else if (DateComponent.GetMonthFromName(retrievedEvery) != -1)
{
startPoint = DateComponent.GetNextDateFromMonth(retrievedEvery, baseDate);
sequenceInterval = new Months(startPoint, (YearMonth)startPoint.Month, 12);
}
else
{
return(null);
}
}
if (sequenceInterval == null)
{
var retrievedGenericSequence = GenericSequenceIntervalRetrieve.Match(Text).Value;
var singularGenericSequence = retrievedGenericSequence.TrimEnd('s').ToLower();
//Handle "every" as numeric value
var retrievedNumericInterval = NumericIntervalRetrieve.Match(Text).Value;
var parsedNumericInterval = 1;
if (retrievedNumericInterval.Length > 0)
{
parsedNumericInterval = int.Parse(retrievedNumericInterval);
}
TimeSpan duration;
switch (singularGenericSequence)
{
case "minute":
duration = new TimeSpan(0, parsedNumericInterval, 0);
sequenceInterval = new CalendarTimeRange(startPoint, duration);
break;
case "hour":
duration = new TimeSpan(parsedNumericInterval, 0, 0);
sequenceInterval = new CalendarTimeRange(startPoint, duration);
break;
case "day":
duration = new TimeSpan(parsedNumericInterval, 0, 0, 0);
sequenceInterval = new CalendarTimeRange(startPoint, duration);
break;
case "week":
duration = new TimeSpan(7 * parsedNumericInterval, 0, 0, 0);
sequenceInterval = new CalendarTimeRange(startPoint, duration);
break;
case "month":
sequenceInterval = new Months(startPoint, (YearMonth)startPoint.Month, parsedNumericInterval);
break;
case "year":
sequenceInterval = new Years(startPoint, parsedNumericInterval);
break;
default:
return(null);
}
}
var result = new SequencedTimeRange(sequenceInterval);
return(result);
}