@@ -0,0 +1,162 @@
+package store.controller;
+
+import static store.controller.PromotionController.getValidInput;
+
+import java.text.NumberFormat;
+import java.util.List;
+import store.model.Receipt;
+import store.view.InputView;
+import store.view.OutputView;
+import store.view.error.ErrorException;
+import store.view.error.InputErrorType;
+
+public class FrontController {
+
+    private static final String newline = System.getProperty("line.separator");
+
+    private final InputView inputView;
+    private final OutputView outputView;
+    private final ProductController productController;
+    private final PromotionController promotionController;
+
+    public FrontController(InputView inputView, OutputView outputView,
+                           ProductController productController, PromotionController promotionController) {
+        this.inputView = inputView;
+        this.outputView = outputView;
+        this.productController = productController;
+        this.promotionController = promotionController;
+
+    }
+
+    public void runFrontController() {
+        run();
+        retry();
+    }
+
+    private void display() {
+        promotionController.displayAllTheProducts();
+    }
+
+    private void retry() {
+        while (true) {
+            try {
+                boolean continuePurchase = getValidInput(inputView::readContinuePurchase, this::isValidPositive);
+                if (!continuePurchase) {
+                    throw new IllegalArgumentException();
+                }
+                run();
+            } catch (IllegalArgumentException e) {
+                return;
+            }
+        }
+    }
+
+    private void run() {
+        MembershipController membershipController = new MembershipController(inputView);
+        boolean skipStartMessage = false;
+
+        while (true) {
+            try {
+                if (!skipStartMessage) {
+                    outputView.startMessage();
+                    display();
+                }
+
+                Receipt receipt = promotionController.process();
+                membershipController.execute(receipt);
+                printTotalReceipt(receipt);
+                return;
+            } catch (ErrorException e) {
+                System.out.println(e.getMessage());
+                /*
+                if (e.getMessage().contains(InputErrorType.NEED_PRODUCT_COUNT_WITHIN_STOCK.getMessage()) ||
+                        e.getMessage().contains(InputErrorType.NEED_EXISTING_PRODUCT.getMessage())) {
+                    skipStartMessage = true;
+                }*/
+                if(!e.getMessage().isEmpty()){
+                    skipStartMessage = true;
+                }
+                new FrontController(inputView, outputView, productController, promotionController);
+            }
+        }
+    }
+
+    private boolean isValidPositive(String input) {
+        if (input.equals("Y")) {
+            return true;
+        }
+        if (input.equals("N")) {
+            return false;
+        }
+        throw new ErrorException(InputErrorType.NEED_AVAILABLE_INPUT);
+    }
+
+    private void printTotalReceipt(Receipt receipt) {
+        outputView.printReceiptStart();
+        printProductDetails(receipt);
+        printBonusProductDetails(receipt);
+        outputView.printDividingLine();
+        receipt.printFinalReceipt();
+    }
+
+
+    private void printProductDetails(Receipt receipt) {
+        List<String> productDetails = receipt.getProductDetails();
+        int groupSize = 3;
+        StringBuilder output = new StringBuilder();
+
+        NumberFormat numberFormat = NumberFormat.getInstance();
+
+        for (int i = 0; i < productDetails.size(); i++) {
+            String detail = productDetails.get(i);
+
+            if ((i + 1) % groupSize == 0) {
+                try {
+                    int number = Integer.parseInt(detail);
+                    output.append(numberFormat.format(number));
+                } catch (NumberFormatException e) {
+                    output.append(detail);
+                }
+                output.append(newline);
+            }
+
+            if ((i + 1) % groupSize != 0 && i != productDetails.size() - 1) {
+                output.append(detail).append("    ");
+            }
+        }
+
+        System.out.print(output);
+    }
+
+
+    private void printBonusProductDetails(Receipt receipt) {
+        List<String> bonusProductDetails = receipt.getBonusProductDetails();
+        int groupSize = 2;
+        StringBuilder output = new StringBuilder();
+
+        NumberFormat numberFormat = NumberFormat.getInstance();
+
+        for (int i = 0; i < bonusProductDetails.size(); i++) {
+            String detail = bonusProductDetails.get(i);
+
+            if ((i + 1) % groupSize == 0) {
+                try {
+                    int number = Integer.parseInt(detail);
+                    output.append(numberFormat.format(number));
+                } catch (NumberFormatException e) {
+                    output.append(detail);
+                }
+                output.append(newline);
+            }
+
+            if ((i + 1) % groupSize != 0 && i != bonusProductDetails.size() - 1) {
+                output.append(detail).append("            ");
+            }
+        }
+        if(!output.isEmpty()){
+            outputView.startPrintBonusProduct();
+        }
+
+        System.out.print(output);
+    }
+}

리뷰: 제가 저번에는 재귀 함수가 안좋지 않을까라는 식으로 얘기를 하였지만 작년 3주차 피드백을 보니 재귀함수로 처리할 수 있다는 내용이 있더군요... 코드를 줄일 수 있다면 재귀도 좋은 것 같습니다!