[1차 VER1.51] Java ToyProject upload by JisangLee

me.smartstore/src/Main.java

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+public class Main {
+    public static void main(String[] args) {
+
+        //SmartStoreApp.getInstance()의 객체가 리턴되어야 test()있는 것, 없는 것 동일하게 사용이 가능
+//        SmartStoreApp.getInstance().test().run();  //function chaining
+        SmartStoreApp.getInstance().run();
+    }
+}

me.smartstore/src/Service/CustomerService.java

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+package Service;
+
+import domain.customer.Customer;
+import domain.customer.Customers;
+import domain.group.Group;
+import domain.group.GroupType;
+import domain.group.Groups;
+import domain.menu.CustomerMenu;
+import handler.exception.*;
+
+import java.util.NoSuchElementException;
+import java.util.function.BiPredicate;
+import java.util.function.Predicate;
+
+import static resources.Message.*;
+
+public class CustomerService {
+
+    private static final Customers customers = Customers.getInstance();
+    private static final CustomerMenu customerMenu = CustomerMenu.getInstance();
+    private static final Groups groups = Groups.getInstance();
+
+    private static CustomerService customerService;
+
+    public static CustomerService getInstance() {
+        if (customerService == null) {
+            customerService = new CustomerService();
+        }
+        return customerService;
+    }
+
+    private CustomerService() {
+    }
+
+    public void addCustomer() {
+        //고객 등록을 하기 전에 group size가 0이라면 먼저 등록을 유도
+        if (groups.size() == 1) {
+            System.out.println(ERR_MSG_INVALID_GROUP_EMPTY);
+            return;
+        }
+
+        while (true) {
+            try {
+                System.out.println("How many customer to input?");
+                int repeatNum = customerMenu.nextInt(END_MSG);
+                addCustomerDetail(repeatNum);
+            } catch (InputEndException e) {
+                System.out.println(e.getMessage());
+                break;
+            } catch (InputFormatException | NoSuchElementException | IllegalStateException e) {
+                System.out.println(e.getMessage());
+            }
+        }
+    }
+
+    private void addCustomerDetail(int repeatNum) {
+
+        for (int count = 0; count < repeatNum; count++) {
+            try {
+                System.out.println("====== Customer " + (count + 1) + " Info. ======\n");
+                System.out.println("After input all the items, select 'Back' to complete the registration.");
+
+                //신규 Customer 객체 생성 후 개별 요소 set
+                Customer regCustomer = getCustomerDetail();
+                regCustomer.setGroupType(findGroupType(regCustomer));
+
+                //고객등록이 완료되면 Customers 배열 객체에 add 한다.
+                customers.add(regCustomer);
+                System.out.println("[Registration Complete] => " + regCustomer);
+
+            } catch (InputEndException e) {
+                //end 입력시 입력 루틴을 종료
+                System.out.println(e.getMessage());
+                break;
+            } catch (InputRangeException | InputFormatException e) {
+                System.out.println(e.getMessage());
+            } catch (NoSuchGroupException e) {
+                System.out.println(e.getMessage());
+                break;
+            }
+        }
+    }
+
+
+    private Customer getCustomerDetail() {
+        if (groups.size() == 1) {
+            throw new NoSuchGroupException();
+        }
+        String cusName = "";
+        String cusId = "";
+        Integer cusTotalTime = null;
+        Integer cusTotalPay = null;
+
+        while (true) {
+            try {
+                int choice = showCustomerDetailMenu();
+
+                if (choice == 1) cusName = getCustomerName();
+                if (choice == 2) cusId = getCustomerId();
+                if (choice == 3) cusTotalTime = getCustomerTotalTime();
+                if (choice == 4) cusTotalPay = getCustomerTotalPay();
+                if (choice == 5) {
+                    //입력 종료시 name과 id가 입력되지 않았다면 재입력 유도
+                    if (cusName.isEmpty() || cusId.isEmpty() || cusTotalTime == null ||
+                            cusTotalPay == null) {
+                        System.out.println("Customer Name : " + cusName + ", CustomerId : " + cusId +
+                                ", CustomerTotalTime : " + cusTotalTime + ", CustomerTotalPay : " + cusTotalPay);
+                        throw new InputEmptyException();
+                    }
+                    break;
+                }
+            } catch (InputRangeException | NumberFormatException e) {
+                System.out.println(e.getMessage());
+            } catch (InputEmptyException e) {
+                System.out.println("[ERROR] => " + e.getMessage());
+            } //end of try-catch
+        } //end of while
+        return new Customer(cusName, cusId, cusTotalTime, cusTotalPay);
+    }
+
+    private int showCustomerDetailMenu() {
+        return customerMenu.selectMenu(new String[]{
+                "Customer Name",
+                "Customer ID",
+                "Customer Spent Time",
+                "Customer Total Pay",
+                "Back"
+        });
+    }
+
+    /**
+     * 하위 메뉴에서 null 입력이 발생할 경우 상위 메뉴로 되던지기
+     *
+     * @return Customer Name
+     */
+    private String getCustomerName() throws InputEndException {
+        System.out.println("Input Customer's Name:");
+        String name = customerMenu.nextLine(END_MSG);
+        if (name.isEmpty()) throw new InputEmptyException();
+        return name;
+    }
+
+    private String getCustomerId() throws InputEndException {
+        //customerId는 중복이 있을 수 없으므로 중복 체크 후 값을 반환
+        System.out.println("Input Customer's ID:");
+        String inputId = customerMenu.nextLine(END_MSG);
+        if (inputId.isEmpty()) throw new InputEmptyException();
+        //true : id 중복 / false : id 중복 아님
+        if (isDupeCusId.test(inputId)) {
+            //중복이면 다시 입력 유도
+            System.out.println("[ERROR] => " + ERR_MSG_DUPLICATE_ID);
+            return "";
+        } else return inputId;
+    }
+
+    private Integer getCustomerTotalTime() throws InputEndException {
+        try {
+            System.out.println("Input Customer's Spent Time:");
+            return customerMenu.nextInt(END_MSG);
+        } catch (InputFormatException e) {
+            throw new InputFormatException();
+        }
+    }
+
+    private Integer getCustomerTotalPay() throws InputEndException {
+        try {
+            System.out.println("Input Customer's Total Payment:");
+            return customerMenu.nextInt(END_MSG);
+        } catch (InputFormatException e) {
+            throw new InputFormatException();
+        }
+    }
+
+    public void showCustomerAll() {
+        if (customers.size() == 0) {
+            System.out.println(ERR_MSG_INVALID_ARR_EMPTY);
+            return;
+        }
+
+        System.out.println("======= Customer Info. =======");
+        for (int i = 0; i < customers.size(); i++) {
+            System.out.print("No. " + (i + 1) + " => ");
+            System.out.println(customers.get(i));
+        }
+    }
+
+    public void updateCustomer() {
+        if (customers.size() == 0) {
+            System.out.println(ERR_MSG_INVALID_ARR_EMPTY);
+            return;
+        }
+        //1. 먼저 등록된 고객 목록을 모두 보여주고 index 번호를 입력받는다.
+        showCustomerAll();
+
+        while (true) {
+            try {
+                int input = getCusIndex();
+                //2. 입력받은 index가 정상이라면 세부 설정 항목으로 이동
+                //index는 0부터 시작하므로 입력받은 수에서 1을 빼준다.
+                Customer target = customers.get(input - 1);
+                setCustomerDetail(target);
+            } catch (IndexOutOfBoundsException | InputFormatException | InputRangeException e) {
+                System.out.println(e.getMessage());
+            } catch (InputEndException e) {
+                System.out.println(e.getMessage());
+                break;
+            }
+        }
+    }
+
+    private int getCusIndex() throws InputEndException {
+        try {
+            System.out.print("Which customer ( 1 ~ " + customers.size() + " )? ");
+            int choice = customerMenu.nextInt(END_MSG);
+            if (customerMenu.isInvalidRange(choice, customers.size())) {
+                throw new InputRangeException();
+            }
+            return choice;
+        } catch (InputFormatException e) {
+            throw new InputFormatException();
+        }
+    }
+
+    private void setCustomerDetail(Customer targetCustomer) {
+
+        while (true) {
+            try {
+                int choice = showCustomerDetailMenu();
+
+                if (choice == 1) targetCustomer.setCusName(getCustomerName());
+                if (choice == 2) targetCustomer.setCusId(getCustomerId());
+                if (choice == 3) targetCustomer.setCusTotalTime(getCustomerTotalTime());
+                if (choice == 4) targetCustomer.setCusTotalPay(getCustomerTotalPay());
+                if (choice == 5) {
+                    if (targetCustomer.getCusName().isEmpty() || targetCustomer.getCusId().isEmpty()) {
+                        throw new InputEmptyException();
+                    } else break;
+                }
+            } catch (InputRangeException | InputFormatException | InputEmptyException e) {
+                System.out.println(e.getMessage());
+            } catch (InputEndException e) {
+                System.out.println(e.getMessage());
+                break;
+            }
+            //end of try-catch
+        }//end of while
+    }
+
+    public void deleteCustomer() {
+
+        if (customers.size() == 0) {
+            System.out.println(ERR_MSG_INVALID_ARR_EMPTY);
+            return;
+        }
+        showCustomerAll();
+
+        while (true) {
+            try {
+                System.out.print("Which customer ( 1 ~ " + customers.size() + " )? ");
+                int input = customerMenu.nextInt(END_MSG);
+
+                //true - 범위를 벗어남 / false - 범위 내
+                if (customerMenu.isInvalidRange(input, customers.size())) {
+                    throw new InputRangeException();
+                } else {
+                    System.out.println(customers.pop(input - 1));
+                    break;
+                }
+            } catch (InputEndException e) {
+                System.out.println(e.getMessage());
+                break;
+            } catch (InputFormatException | InputRangeException e) {
+                System.out.println(e.getMessage());
+            }
+        }
+    }
+
+    /**
+     * Customer가 추가되거나 Group Parameter가 변경되면 고객 등급 초기화
+     */
+    public void refresh() {
+        if (groups.size() == 0 || customers.size() == 0) {
+            System.out.println(ERR_MSG_INVALID_ARR_EMPTY);
+            return;
+        }
+        try {
+            //customers[] 배열의 GroupType 갱신
+            for (int i = 0; i < customers.size(); i++) {
+                customers.get(i).setGroupType(findGroupType(customers.get(i)));
+            }
+        } catch (ArrayEmptyException | IndexOutOfBoundsException e) {
+            System.out.println(e.getMessage());
+        }
+    }
+
+    /**
+     * 사용자의 이용시간과 금액을 등록된 기준별로 매칭하여 반환
+     * @param customer : Customer 객체
+     * @return GroupType
+     */
+    private GroupType findGroupType(Customer customer) {
+        //group size가 0이라면 등록을 먼저 하도록 유도
+        if (groups.size() == 1) {
+            throw new NullArgumentException();
+        }
+        //groups/get(1) => GENERAL Type
+        //Customer의 사용시간과 이용금액이 GENERAL Type 기준보다 작으면 NONE
+        if (lessThanGeneral.test(groups.get(1), customer)) {
+            return GroupType.NONE;
+        }
+
+        //VVIP 부터 GENERAL까지 역순으로 Group Parameter 기준에 맞는지 체크
+        for (int i = (groups.size() - 1); i > -1; i--) {
+            try {
+                if (compareParameter.test(groups.get(i), customer)) {
+                    return groups.get(i).getGroupType();
+                }
+            } catch (ArrayEmptyException | IndexOutOfBoundsException e) {
+                System.out.println(e.getMessage());
+                break;
+            }
+        }
+        //for문을 다 돌았는데도 맞는 조건이 없다면 NONE
+        return GroupType.NONE;
+    }
+
+    /**
+     * 입력받은 customerID의 중복을 체크
+     *
+     * @param inputId : 중복 체크할 customerId
+     * @return : true : id 중복 / false : id 중복 아님
+     */
+    Predicate<String> isDupeCusId = inputId -> {
+        for (int i = 0; i < customers.size(); i++) {
+            if (customers.get(i).getCusId().equals(inputId)) {
+                return true;
+            }
+        }
+        return false;
+    };
+
+    /**
+     * Customer의 총 이용시간과 총 이용금액이 GENERAL Type 기준보다 작은지 체크
+     * 작으면 true / 그렇지 않으면 false
+     */
+    BiPredicate<Group, Customer> lessThanGeneral = (group, customer) -> {
+        if (customer.getCusTotalPay() < group.getParameter().getMinPay() ||
+                customer.getCusTotalTime() < group.getParameter().getMinTime()) {
+            return true;
+        } else return false;
+    };
+
+    /**
+     * Customer의 Parameter의 값이 Group에 등록된 Parameter 값보다 크거나 같으면 true / 아니면 false return
+     */
+    BiPredicate<Group, Customer> compareParameter = (group, customer) -> {
+        if (customer.getCusTotalPay() >= group.getParameter().getMinPay() &&
+                customer.getCusTotalTime() >= group.getParameter().getMinTime()) {
+            return true;
+        } else return false;
+    };
+}