private IEnumerable <TodoSpec> BuildStatus(IEnumerable <TodoStatus> statuses)
{
if (statuses.Count() == 0)
{
return(null);
}
return(statuses.Select(s => TodoSpecifications.ByStatus(s)));
}
private TodoSpec BuildExactly(DateTime when, bool?overdue)
{
var spec = TodoSpecifications.Due(when);
if (overdue.HasValue)
{
spec = spec.And(BuildOverdue(overdue.Value, hasDueDate: null));
}
return(spec);
}
private TodoSpec BuildDateRange(DateTime?begin, DateTime?end)
{
if (begin.HasValue && end.HasValue)
{
return(TodoSpecifications.InDateRange(begin.Value, end.Value));
}
else if (begin.HasValue && !end.HasValue)
{
return(TodoSpecifications.DueAfter(begin.Value));
}
else if (!begin.HasValue && end.HasValue)
{
return(TodoSpecifications.DueBefore(end.Value));
}
else
{
return(null);
}
}
private TodoSpec GetOverDue(bool overdue)
{
return(overdue ? TodoSpecifications.Overdue() : TodoSpecifications.NotOverdue());
}