Hyunje

src/main/java/legacy/Application.java

@@ -1,8 +1,10 @@
 package legacy;
 
+import legacy.controller.CustomerController;
+
 public class Application {
     public static void main(String[] args) {
-        CustomerService customerService = new CustomerService();
-        customerService.run();
+        CustomerController customerController = new CustomerController();
+        customerController.run();
     }
 }

src/main/java/legacy/controller/CustomerController.java

@@ -0,0 +1,37 @@
+package legacy.controller;
+
+import legacy.enums.CustomerStatus;
+import legacy.model.CustomerManager;
+import legacy.view.Console;
+
+public class CustomerController {
+
+    CustomerManager manager = new CustomerManager();
+    Console console = new Console();
+
+    public void run() {
+        console.showCreateCustomer(
+                manager.createCustomer("101", "홍길동", CustomerStatus.ACTIVE)
+        );
+        console.showCreateCustomer(
+                manager.createCustomer("102", "이순신", CustomerStatus.ACTIVE)
+        );
+        console.showCreateCustomer(
+                manager.createCustomer("103", "강감찬", CustomerStatus.ACTIVE)
+        );
+
+        console.showAllCustomers(manager.getCustomers());
+
+        console.showUpdateCustomer(
+                manager.getOldName("101"),
+                manager.updateCustomer("101", "홍길순")
+        );
+
+
+        manager.deleteCustomer("102");
+        console.showDeleteCustomer("102");
+
+        console.showAllCustomers(manager.getCustomers());
+    }
+}
+

src/main/java/legacy/enums/CustomerStatus.java

@@ -0,0 +1,5 @@
+package legacy.enums;
+
+public enum CustomerStatus {
+    ACTIVE, INACTIVE
+}

src/main/java/legacy/model/Customer.java

@@ -0,0 +1,22 @@
+package legacy.model;
+
+import legacy.enums.CustomerStatus;
+
+public class Customer {
+    private final String id;
+    private String name;
+    private CustomerStatus status;
+
+    public Customer(String id, String name, CustomerStatus status) {
+        this.id = id;
+        this.name = name;
+        this.status = status;
+    }
+
+    public String getId() { return id; }
+    public String getName() { return name; }
+    public CustomerStatus getStatus() { return status; }
+
+    public void setName(String name) { this.name = name; }
+    public void setStatus(CustomerStatus status) { this.status = status; }
+}

src/main/java/legacy/model/CustomerManager.java

@@ -0,0 +1,50 @@
+package legacy.model;
+
+import legacy.enums.CustomerStatus;
+
+import java.util.ArrayList;
+
+public class CustomerManager {
+
+    private final ArrayList<Customer> customers = new ArrayList<>();
+
+    public Customer createCustomer(String id, String name, CustomerStatus status) {
+        Customer customer = new Customer(id, name, status);
+
+        customers.add(customer);
+
+        return customer;
+    }
+
+
+    public Customer updateCustomer(String id, String newName) {
+        Customer customer = getCustomer(id);
+        customer.setName(newName);
+
+        return customer;
+    }
+
+    public void deleteCustomer(String id) {
+        customers.remove(getCustomer(id));
+    }
+
+
+    public String getOldName(String id) {
+        return getCustomer(id).getName();
+    }
+
+    private Customer getCustomer(String id) {
+        for (Customer customer : customers) {
+
+            if (customer.getId().equals(id)) {
+                return customer;
+            }
+        }
+
+        throw new IllegalArgumentException("존재하지 않는 ID : " + id);
+    }
+
+    public ArrayList<Customer> getCustomers() {
+        return customers;
+    }
+}

src/main/java/legacy/view/Console.java

@@ -0,0 +1,40 @@
+package legacy.view;
+
+import legacy.model.Customer;
+
+import java.util.ArrayList;
+
+public class Console {
+
+    public void showCreateCustomer(Customer customer) {
+        System.out.println("===== [고객 등록] =====");
+        System.out.println(
+                "ID : " + customer.getId() + " | " +
+                "이름 : " + customer.getName() + " | " +
+                "상태 : " + customer.getStatus());
+    }
+
+    public void showUpdateCustomer(String oldName, Customer customer) {
+        System.out.println("===== [고객 정보 수정] =====");
+        System.out.println("ID : " + customer.getId());
+        System.out.println(oldName + " -> " + customer.getName());
+    }
+
+    public void showDeleteCustomer(String id) {
+        System.out.println("===== [고객 삭제 완료] =====");
+        System.out.println("ID : " + id);
+    }
+
+    public void showAllCustomers(ArrayList<Customer> customers) {
+        System.out.println("===== [모든 고객 조회] =====");
+        System.out.println("총 고객 수 : " + customers.size());
+
+        for (Customer customer : customers) {
+            System.out.println(
+                    "ID: " + customer.getId() + " | " +
+                    "이름: " + customer.getName() + " | " +
+                    "상태: " + customer.getStatus()
+            );
+        }
+    }
+}