private async Task <Tax> AddTax(Tax tax)
{
if (!ValidTaxAmount(tax.TaxAmount))
{
throw new TaxesManagerException(Messages.TaxAmountOutOfRange);
}
if (tax.Municipality == null || tax.StartDate == null || tax.EndDate == null)
{
throw new TaxesManagerException(Messages.MissingPrimaryKey);
}
if (TaxExists(tax.Municipality, tax.StartDate, tax.EndDate))
{
throw new TaxesManagerException(Messages.ExistingTax);
}
try
{
_context.Taxes.Add(tax);
await _context.SaveChangesAsync();
}
catch (DbUpdateException)
{
throw new TaxesManagerException();
}
return(tax);
}
internal async Task CleanUpDatabase()
{
var taxes = _context.Taxes;
_context.Taxes.RemoveRange(taxes);
await _context.SaveChangesAsync();
}
