@@ -0,0 +1,110 @@
+package christmas.controller;
+
+import christmas.domain.*;
+import christmas.utils.EventSettings;
+import christmas.parser.EventDetailsParser;
+import christmas.view.EventView;
+
+import java.math.BigDecimal;
+import java.util.Map;
+
+public class ChristmasEventController implements EventController {
+    private static final String WEEKDAY_DISCOUNT_TYPE = "dessert";
+    private static final String WEEKEND_DISCOUNT_TYPE = "main";
+    private static final DecemberCalendar decemberCalendar = new DecemberCalendar();
+
+    private boolean canPresent = false;
+    private BigDecimal totalBenefitAmount = new BigDecimal(0);
+    private Map<Menu, Integer> orderDetails;
+    private Badge badge;
+    private String eventResultDetails = "";
+    private BigDecimal beforeEventApplied;
+
+    public void applyEvent(ReservationDay reservationDay, Order order, Bill bill) {
+        beforeEventApplied = bill.getTotalPrice();
+        if (bill.getTotalPrice().compareTo(EventSettings.EVENT_APPLY_STAND.getAmount()) >= 0) {
+            this.orderDetails = order.getOrderDetails();
+            presentEvent(bill);
+            dDayDiscountEvent(reservationDay, bill);
+            weekdayDiscountEvent(reservationDay, bill);
+            weekendDiscountEvent(reservationDay, bill);
+            specialDayDiscountEvent(reservationDay, bill);
+            badgeEvent(totalBenefitAmount);
+        }
+    }
+
+    public void presentEvent(Bill bill) {
+        if (bill.getTotalPrice().compareTo(EventSettings.PRESENT_STANDARD_AMOUNT.getAmount()) == 1) {
+            canPresent = true;
+            BigDecimal benefitValue = EventSettings.PRESENT_VALUE.getAmount();
+
+            totalBenefitAmount = totalBenefitAmount.add(benefitValue);
+            eventResultDetails += EventDetailsParser.parsePresentEventDetail(benefitValue);
+        }
+    }
+
+    public void dDayDiscountEvent(ReservationDay reservationDay, Bill bill) {
+        if (reservationDay.dDayDiscountEventPeriod()) {
+            BigDecimal eventDay = new BigDecimal(reservationDay.getDay() - 1);
+            BigDecimal discountValue = EventSettings.D_DAY_DISCOUNT_START_VALUE.getAmount().
+                    add((EventSettings.D_DAY_DISCOUNT_VALUE.getAmount().multiply(eventDay)));
+
+            bill.discountPrice(discountValue);
+            totalBenefitAmount = totalBenefitAmount.add(discountValue);
+            eventResultDetails += EventDetailsParser.parseDDayDiscountEventDetail(discountValue);
+        }
+    }
+
+    public void weekdayDiscountEvent(ReservationDay day, Bill bill) {
+        if (decemberCalendar.isWeekday(day.getDay())) {
+            long dessertCount = orderDetails.entrySet().stream()
+                    .filter(entry -> WEEKDAY_DISCOUNT_TYPE.equals(entry.getKey().getMenuItem().getMenuType()))
+                    .mapToLong(Map.Entry::getValue)
+                    .sum();
+            BigDecimal discountValue = new BigDecimal(dessertCount)
+                    .multiply(EventSettings.STANDARD_DISCOUNT_VALUE.getAmount());
+
+            bill.discountPrice(discountValue);
+            totalBenefitAmount = totalBenefitAmount.add(discountValue);
+            eventResultDetails += EventDetailsParser.parseWeekdayDiscountEventDetail(discountValue);
+        }
+    }
+
+    public void weekendDiscountEvent(ReservationDay day, Bill bill) {
+        if (decemberCalendar.isWeekend(day.getDay())) {
+            long mainDishCount = orderDetails.entrySet().stream()
+                    .filter(entry -> WEEKEND_DISCOUNT_TYPE.equals(entry.getKey().getMenuItem().getMenuType()))
+                    .mapToLong(Map.Entry::getValue)
+                    .sum();
+            BigDecimal discountValue = new BigDecimal(mainDishCount)
+                    .multiply(EventSettings.STANDARD_DISCOUNT_VALUE.getAmount());
+
+            bill.discountPrice(discountValue);
+            totalBenefitAmount = totalBenefitAmount.add(discountValue);
+            eventResultDetails += EventDetailsParser.parseWeekendDiscountEventDetail(discountValue);
+        }
+    }
+
+    public void specialDayDiscountEvent(ReservationDay day, Bill bill) {
+        if (decemberCalendar.isSpecialDay(day.getDay())) {
+            BigDecimal discountValue = EventSettings.SPECIAL_DAY_DISCOUNT_VALUE.getAmount();
+
+            bill.discountPrice(discountValue);
+            totalBenefitAmount = totalBenefitAmount.add(discountValue);
+            eventResultDetails += EventDetailsParser.paresSpecialDayDiscountEventDetail(discountValue);
+        }
+    }
+
+    public void badgeEvent(BigDecimal totalBenefitAmount) {
+        badge = Badge.getBadge(totalBenefitAmount);
+    }
+
+    public void showEventDiscountDetails(Bill bill) {
+        EventView.printPriceBeforeDiscount(beforeEventApplied);
+        EventView.printPresentDetails(canPresent);
+        EventView.printEventResultDetails(eventResultDetails);
+        EventView.printTotalBenefitAmount(totalBenefitAmount);
+        EventView.printPriceAfterDiscount(bill);
+        EventView.printBadge(badge);
+    }
+}

리뷰: 3주 차 웹 백엔드 공통 피드백으로 필드(인스턴스 변수)의 수를 줄이기 위해 노력한다라는 항목이 있었는데요 중복되는 항목들은 하나의 result로 묶어서 한번 관리를 해보는 건 어떨까요?