public Quote ApplyOn(Quote quote)
{
var productAmount = quote.ProductAmount;
return(_productDiscounts.TryGetValue(productAmount.ProductUnit, out var discount)
? quote.Apply(discount)
: quote.Apply(_baseDiscount));
}
private static Quote RecalculateQuote(Quote quote, ImmutableDictionary <ProductUnit, Discount> discounts) =>
discounts.TryGetValue(quote.ProductAmount.ProductUnit, out var discount)
? quote.Apply(discount)
: quote;