public decimal GetTax(string city, DateTime date)
{
CityTax cityTaxes;
if (_cityTaxesCache.TryGetValue(city, out cityTaxes) == false)
{
return(NoTax);
}
YearTax cityTax;
if (!cityTaxes.YearTaxes.TryGetValue(date.Year, out cityTax))
{
return(NoTax);
}
decimal dailyTax, weeklyTax, monthlyTax;
if (cityTax.DayTaxes.TryGetValue(date.DayOfYear, out dailyTax))
{
return(dailyTax);
}
// fallback to Weekly Taxes
var weekOfYear = CalendarHelper.GetWeekOfYear(date);
if (cityTax.WeekTaxes.TryGetValue(weekOfYear, out weeklyTax))
{
return(weeklyTax);
}
// fallback to Montly and Yearly Taxes
return(cityTax.MonthTaxes.TryGetValue(date.Month, out monthlyTax) ? monthlyTax : cityTax.YearlyTax);
}
public void UpdateTaxes(TaxRecord taxRecord)
{
if (taxRecord == null)
{
throw new ArgumentException("Input data is invalid. See manual (Readme) for expected input formats");
}
if (string.IsNullOrEmpty(taxRecord.City))
{
throw new ArgumentException("City property is missing or invalid");
}
if (taxRecord.Tax.HasValue == false || taxRecord.Tax.Value == 0)
{
throw new ArgumentException("Tax must have a non-zero value");
}
if (string.IsNullOrEmpty(taxRecord.Day) == false)
{
DateTime dayDateTime;
var parseResult = DateTime.TryParse(taxRecord.Day, out dayDateTime);
if (!parseResult)
{
throw new ArgumentException("Day property is invalid. Expected date in acceptable format (e.g. YYYY.MM.DD)");
}
if (taxRecord.Year.HasValue || taxRecord.Month.HasValue || taxRecord.WeekOfYear.HasValue)
{
throw new ArgumentException("Only one type of tax can be entered in one request.");
}
_taxRepository.AddDailyTax(taxRecord.City, dayDateTime, taxRecord.Tax.Value);
return;
}
var year = taxRecord.Year ?? -1;
if (year < 0)
{
throw new ArgumentException("Year property is missing or invalid");
}
if (taxRecord.Month.HasValue)
{
if (taxRecord.Month.Value < 1 || taxRecord.Month.Value > 12)
{
throw new ArgumentException("Month property is invalid. Valid range: 1-12");
}
if (taxRecord.WeekOfYear.HasValue)
{
throw new ArgumentException("Only one type of tax can be entered in one request.");
}
_taxRepository.AddMonthlyTax(taxRecord.City, year, taxRecord.Month.Value, taxRecord.Tax.Value);
return;
}
if (taxRecord.WeekOfYear.HasValue)
{
var weekOfYear = taxRecord.WeekOfYear.Value;
var lastWeekOfYear = CalendarHelper.GetWeekOfYear(new DateTime(year, 12, 31));
if (weekOfYear < 1 || weekOfYear > lastWeekOfYear)
{
throw new ArgumentException("Week property is invalid. Valid range: 1..52 (or 53, or 54 - depends on year)");
}
_taxRepository.AddWeeklyTax(taxRecord.City, year, weekOfYear, taxRecord.Tax.Value);
}
_taxRepository.AddYearlyTax(taxRecord.City, year, taxRecord.Tax.Value);
}