[AutoVending] ADD | 자판기 기본 구현

KIMJIHYE/AutoVending/src/main/java/AdminMenu.java

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+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Scanner;
+
+public class AdminMenu implements Menu {
+    Scanner scanner = new Scanner(System.in);
+    private Machine machine;
+    private List<Item> items;
+    private Map<Item, Integer> stocks;
+    private Report report;
+
+    public AdminMenu(Machine machine) {
+        this.machine = machine;
+        items = machine.getItems();
+        stocks = machine.getStocks();
+        report = machine.getReport();
+    }
+
+    public void showItems() {
+        System.out.println("번호 상품명 제조사 용량 가격 재고");
+        for (Item item : items) {
+            System.out.print(item);
+            System.out.println(stocks.get(item) + "개");
+        }
+    }
+
+    public void showMenus() {
+        System.out.println("========= 관리자 메뉴  =======");
+        System.out.println("1. 재고 채우기");
+        System.out.println("2. 사용자의 구매 이력 보기");
+        System.out.print("메뉴 번호를 입력하세요 :) ");
+    }
+
+    public void doProcess(int menuNum) {
+        switch (menuNum) {
+            case 1:
+                showItems();
+                fillItems();
+                break;
+            case 2:
+                report.print();
+                break;
+            default:
+                System.out.println("잘못된 입력..");
+                break;
+
+        }
+    }
+
+    public void raisePrice(int itemId, int amount) {
+        Item item = machine.getItem(itemId);
+        item.price += amount;
+    }
+
+    public void reducePrice(int itemId, int amount) {
+        Item item = machine.getItem(itemId);
+        item.price -= amount;
+    }
+
+    public void fillItems() {
+        int capacity = machine.getCapacity();
+        Map<Item, Integer> needToBuy = new HashMap<>();
+
+        for (Item item : stocks.keySet()) {
+            if (stocks.get(item) < capacity) {
+                int amount = capacity - stocks.get(item);
+                //report.itemIn(item,amount);
+                needToBuy.put(item, amount);
+            }
+        }
+
+        String list = "";
+        for (Item item : needToBuy.keySet()) {
+            list += item.name + " " + needToBuy.get(item) + "개, ";
+        }
+        list = list.substring(0, list.length() - 2);
+
+        System.out.println("재고를 꽉 채우려면");
+        System.out.println(list + "가 필요합니다.");
+        System.out.print("주문하시겠습니까? (Y/N) ");
+        switch (scanner.next()) {
+            case "Y":
+            case "y":
+                for (Item item : needToBuy.keySet()) {
+                    machine.fill(item, needToBuy.get(item));
+                }
+                break;
+            case "N":
+            case "n":
+                System.out.println("관리자 메뉴를 종료합니다. :)");
+                System.out.println("=============================");
+                break;
+        }
+    }
+}

KIMJIHYE/AutoVending/src/main/java/Item.java

@@ -0,0 +1,22 @@
+public class Item {
+    int itemId;
+    String brand;
+    int weight;
+    int price;
+    String name;
+    long date;
+
+    public Item(int itemId, String brand, int weight, int price, String name) {
+        this.itemId = itemId;
+        this.brand = brand;
+        this.weight = weight;
+        this.price = price;
+        this.name = name;
+        this.date = System.currentTimeMillis();
+    }
+
+    @Override
+    public String toString() {
+        return itemId + ". " + name + " " + brand + " " + weight + "ml " + price + "원 ";
+    }
+}

KIMJIHYE/AutoVending/src/main/java/Machine.java

@@ -0,0 +1,92 @@
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class Machine {
+    private Report report;
+    private List<Item> items;
+    private Map<Item, Integer> stocks;
+    private int capacity = 10;
+    private int money;
+
+    public Machine() {
+        items = new ArrayList<>();
+        items.add(new Item(1, "해태", 240, 1000, "코코팜"));
+        items.add(new Item(2, "동아오츠카", 240, 900, "데자와"));
+        items.add(new Item(3, "롯데", 150, 500, "레쓰비"));
+        items.add(new Item(4, "롯데", 210, 900, "칠성사이다"));
+        items.add(new Item(5, "델몬트", 240, 1100, "오렌지에이드"));
+
+        report = new Report();
+
+        stocks = new HashMap<Item, Integer>();
+        for (Item item : items) {
+            stocks.put(item, capacity);
+        }
+    }
+
+    public void setMoney(int money) {
+        this.money = money;
+    }
+
+    public int getMoney() {
+        return money;
+    }
+
+    public int getCapacity() {
+        return capacity;
+    }
+
+    public void setCapacity(int capacity) {
+        this.capacity = capacity;
+    }
+
+    public Item getItem(int itemId) {
+        Item it = null;
+        for (Item item : items) {
+            if (item.itemId == itemId) {
+                it = item;
+            }
+        }
+
+        if (it == null) {
+            System.out.println("찾으시는 상품이 없습니다.");
+            return null;
+        } else {
+            return it;
+        }
+    }
+
+    public void fill(Item item, int amount) {
+        int remains = stocks.get(item);
+        stocks.put(item, remains + amount);
+    }
+
+    public void buy(int itemId) {
+        for (Item item : items) {
+            if (item.itemId == itemId) {
+                Item it = item;
+                int remains = stocks.get(it);
+                if (remains == 0) {
+                    System.out.println("Sold Out!!");
+                } else {
+                    stocks.put(it, remains - 1);
+                    money -= it.price;
+                }
+            }
+        }
+    }
+
+    public List<Item> getItems() {
+        return items;
+    }
+
+    public Map<Item, Integer> getStocks() {
+        return stocks;
+    }
+
+    public Report getReport() {
+        return report;
+    }
+}

KIMJIHYE/AutoVending/src/main/java/Main.java

@@ -0,0 +1,34 @@
+import java.util.Scanner;
+
+public class Main {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        Machine machine = new Machine();
+        Menu menu = null;
+
+        System.out.println("   자팡기자판기  ");
+        while (true) {
+            System.out.println("1. 상품 구매(사용자 메뉴)\n2. 상품 관리(관리자 메뉴)");
+            System.out.print("메뉴 번호를 입력하세요 :) ");
+            switch (scanner.nextInt()) {
+                case 1:
+                    menu = new UserMenu(machine);
+                    menu.showItems();
+                    menu.doProcess();
+                    break;
+                case 2:
+                    menu = new AdminMenu(machine);
+                    menu.showItems();
+                    menu.showMenus();
+                    menu.doProcess(scanner.nextInt());
+                    break;
+            }
+
+
+        }
+
+
+    }
+
+}

KIMJIHYE/AutoVending/src/main/java/Menu.java

@@ -0,0 +1,12 @@
+public interface Menu {
+    void showItems();
+    default void doProcess() {
+    }
+    default void doProcess(int menuNum) {
+    }
+    default void showMenus() {
+    }
+    default boolean showCanBuy(int money) {
+        return true;
+    }
+}

KIMJIHYE/AutoVending/src/main/java/Report.java

@@ -0,0 +1,27 @@
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Report {
+    List<String> reports;
+
+    public Report() {
+        this.reports = new ArrayList<String>();
+    }
+
+    public void write(String item) {
+        DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        String log = (reports.size() + 1) + ". " + item + " 1개 " + df.format(System.currentTimeMillis());
+        reports.add(log);
+    }
+
+    public void print() {
+        System.out.println("======  사용자의 구매 이력  =======");
+        for (String report : reports) {
+            System.out.println(report);
+        }
+        System.out.println("=================================");
+    }
+
+}

KIMJIHYE/AutoVending/src/main/java/UserMenu.java

@@ -0,0 +1,88 @@
+import java.util.List;
+import java.util.Scanner;
+
+public class UserMenu implements Menu {
+    Scanner scanner = new Scanner(System.in);
+    private Machine machine;
+    private Report report;
+    List<Item> items;
+    int minPrice;
+
+    public UserMenu(Machine machine) {
+        this.machine = machine;
+        items = machine.getItems();
+        report = machine.getReport();
+
+        minPrice = items.get(0).price;
+        for (Item item : items) {
+            if (item.price < minPrice) {
+                minPrice = item.price;
+            }
+        }
+
+        System.out.println("===========  상품 구매 ==========");
+    }
+
+    public void doProcess() {
+        boolean isEnd = false;
+        while (true) {
+            System.out.print("돈을 넣으세요 :) ");
+            int money = scanner.nextInt();
+            machine.setMoney(machine.getMoney() + money);
+            if (showCanBuy(machine.getMoney())) {
+                System.out.print("원하는 상품을 선택하세요 :) ");
+                int itemId = scanner.nextInt();
+                String item = machine.getItem(itemId).name;
+                machine.buy(itemId);
+                System.out.println(item + "을 구입했습니다.");
+                report.write(item);
+                System.out.println("더 구매하시겠습니까? (Y/N) ");
+                switch (scanner.next()) {
+                    case "Y":
+                    case "y":
+                        break;
+                    case "N":
+                    case "n":
+                        System.out.println("거스름돈 " + machine.getMoney() + "원을 가져가세요 :) ");
+                        machine.setMoney(0);
+                        isEnd = true;
+                        break;
+                    default:
+                        System.out.println("잘못된 입력.. 처음으로 이동합니다.");
+                }
+            } else {
+                continue;
+            }
+            System.out.println("=======================================");
+            if (isEnd) {
+                break;
+            }
+        }
+
+    }
+
+    public void showItems() {
+        System.out.println("번호 상품명 제조사 용량 가격");
+        for (Item item : items) {
+            System.out.println(item);
+        }
+    }
+
+    public boolean showCanBuy(int money) {
+        if (money < minPrice) {
+            System.out.println("돈이 너무 적습니다.. 더 넣어주세요.. ");
+            return false;
+        } else {
+            System.out.println(money + "원으로 살 수 있는 음료");
+            System.out.println("=> ");
+
+            for (Item item : items) {
+                if (item.price <= money) {
+                    System.out.println(item.itemId + ". " + item.name + " " + item.price + "원");
+                }
+            }
+            return true;
+        }
+    }
+
+}