public void AddTaxToCity(string city, TaxScheduleEntry scheduleEntry)
{
if (scheduleDatabase.ContainsKey(city))
{
//existing city, add entry to existing schedule
var schedule = scheduleDatabase[city];
schedule.AddEntry(scheduleEntry);
}
else
{
//new city, new schedule, with one entry
var schedule = new TaxSchedule(city);
schedule.AddEntry(scheduleEntry);
scheduleDatabase.Add(city, schedule);
}
}
//here we make the tax calculation based on the narrowest range of dates from the list
//tax could also be done by adding the rates of all the date ranges that match
public double GetTax(DateTime queryDate)
{
DateRange narrowestRange = new DateRange(new DateTime(1, 1, 1), new DateTime(9999, 12, 31));
TaxScheduleEntry entryWithNarrowestRange = null;
foreach (var entry in scheduleEntryList)
{
if (TaxScheduleEntry.IsDateInRange(queryDate, entry.dateRange))
{
if (entry.dateRange.TotalDays() < narrowestRange.TotalDays())
{
narrowestRange = entry.dateRange;
entryWithNarrowestRange = entry;
}
}
}
return(entryWithNarrowestRange == null? 0.0: entryWithNarrowestRange.GetTax(queryDate));
}
public void AddEntry(TaxScheduleEntry entry)
{
scheduleEntryList.Add(entry);
}