public static string ToString(this IPeriodic periodic, string format = null, bool numericFormat = false, bool longDefault = false)
{
switch (Frequency(periodic))
{
case PeriodicFrequency.Yearly:
if (string.IsNullOrEmpty(format))
{
return(periodic.Year.ToString());
}
break;
case PeriodicFrequency.Monthly:
if (string.IsNullOrEmpty(format))
{
format = longDefault ? "MMMM" : "MMM";
numericFormat = false;
}
break;
case PeriodicFrequency.Weekly:
if (string.IsNullOrEmpty(format))
{
format = longDefault ? "Week {2}" : "{2}";
numericFormat = true;
}
break;
case PeriodicFrequency.Daily:
if (string.IsNullOrEmpty(format))
{
return(periodic.Day.ToString());
}
break;
default:
return(string.Empty);
}
if (numericFormat)
{
return(string.Format(format, periodic.Year, periodic.Month, periodic.Week, periodic.Day));
}
else
{
return(StartDate(periodic).ToString(format));
}
}
public static DateTime StartDate(this IPeriodic periodic)
{
switch (Frequency(periodic))
{
case PeriodicFrequency.Yearly:
return(Dates.YearFirstDay(periodic.Year));
case PeriodicFrequency.Monthly:
return(Dates.MonthFirstDay(periodic.Year, periodic.Month));
case PeriodicFrequency.Weekly:
return(Dates.WeekFirstDay(periodic.Year, periodic.Week));
case PeriodicFrequency.Daily:
return(new DateTime(periodic.Year, periodic.Month, periodic.Day));
default:
return(new DateTime());
}
}
public static PeriodicFrequency Frequency(this IPeriodic periodic)
{
if (periodic == null || periodic.Year <= 0)
{
return(PeriodicFrequency.Unknown);
}
if (periodic.Month > 0)
{
return(PeriodicFrequency.Monthly);
}
if (periodic.Week > 0)
{
return(PeriodicFrequency.Weekly);
}
if (periodic.Day > 0)
{
return(PeriodicFrequency.Daily);
}
return(PeriodicFrequency.Yearly);
}
public static bool IsDaily(this IPeriodic periodic) => Frequency(periodic) == PeriodicFrequency.Daily;
public static bool IsWeekly(this IPeriodic periodic) => Frequency(periodic) == PeriodicFrequency.Weekly;
public static bool IsMonthly(this IPeriodic periodic) => Frequency(periodic) == PeriodicFrequency.Monthly;
public static bool IsAnnual(this IPeriodic periodic) => Frequency(periodic) == PeriodicFrequency.Yearly;
