public CheckoutTill(PricingRules rules, IReceiptPrinter receiptPrinter)
{
_rules = rules;
_specialRuleEngine = new SpecialRuleEngine(_rules);
_receiptItems = new ReceiptItems();
_receiptPrinter = receiptPrinter;
}
private void MonitorAndApplyRule(PricingRule rule, ReceiptItems receiptItems)
{
IncrementRuleAccumulatorForRule(rule);
if (_ruleAccumulator[rule.Sku] < rule.QuailfyingQty)
{
return;
}
ApplyRule(rule, receiptItems);
}
private void ApplyRule(PricingRule rule, ReceiptItems receiptItems)
{
receiptItems.AddReceiptDiscount(rule.Sku, rule.DiscountRule, rule.Price, rule.Rule);
ResetRuleAccumulatorForRule(rule);
}
public void MonitorandApplyDiscountForSku(string sku, ReceiptItems receiptItems)
{
var rule = _rules.GetRuleBySku(sku);
if (!rule.HasSpecialRuleForSku()) return;
MonitorAndApplyRule(rule, receiptItems);
}