[자판기] 조나현 미션 제출합니다.

docs/README.md

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+# 미션 - 자판기
+
+---
+### 구현할 기능 목록
+
+👉 자판기 금액
+- [X] 자판기가 보유한 금액을 생성한다.
+
+👉 자판기 금액
+- [ ] 상품 리스트를 만든다.
+
+👉 잔돈 반환
+- [ ] 사용자의 금액이 상품의 최저 가격보다 적으면 잔돈을 반환한다.
+- [ ] 모든 상품이 소진된 경우 잔돈을 반환한다.
+- [ ] 지폐를 잔돈으로 반환하지 않는다.
+- [ ] 잔돈 반환시 현재 보유한 최소 개수의 동전으로 잔돈을 반환한다.
+- [ ] 잔돈을 반환할 수 없는 경우 잔돈으로 반환할 수 있는 금액만 반환한다. 
+
+
+👉 예외 사항
+  - [X] 금액은 숫자만 입력되어야한다.
+  - [X] 상품가격은 100원부터 시작한다.
+  - [X] 상품가격은 10원으로 나누어 떨어져야한다.
+  - [X] 입력 양식에 어긋나면 예외처리
+    - [X] 개별 상품은 [] 대괄호로 묶인다.
+    - [X] 상품들은 ; 으로 구분된다.

src/main/java/vendingmachine/Application.java

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 package vendingmachine;
 
+import vendingmachine.controller.VendingMachineController;
+
 public class Application {
     public static void main(String[] args) {
         // TODO: 프로그램 구현
+        VendingMachineController vendingMachineController = new VendingMachineController();
+        try{
+            vendingMachineController.gameStart();
+        }catch (Exception e){
+            System.out.println(e.getMessage());
+        }
     }
 }

src/main/java/vendingmachine/controller/VendingMachineController.java

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+package vendingmachine.controller;
+
+import vendingmachine.vendingmachine.Coin;
+import vendingmachine.goods.GoodsManager;
+import vendingmachine.vendingmachine.CoinMaker;
+import vendingmachine.view.InputView;
+import vendingmachine.view.OutputView;
+
+public class VendingMachineController {
+    InputView inputView = new InputView();
+    OutputView outputView = new OutputView();
+    CoinMaker coinMaker = new CoinMaker();
+    GoodsManager goodsManager;
+
+    public void gameStart() {
+        String money = inputView.inputVendingMoney();
+        makeVendingMachineCoin(money);
+    }
+
+    private void makeVendingMachineCoin(String money) {
+        coinMaker.randomCoin(money);
+        outputView.vendingMachineCoin(Coin.makeCoinList());
+        makeGoodsCataLog();
+    }
+
+    private void makeGoodsCataLog() {
+        String goodsCataLog = inputView.inputGoodsPriceAmount();
+        goodsManager = new GoodsManager(goodsCataLog);
+        InputUserMoney();
+    }
+
+    private void InputUserMoney() {
+        int money = Integer.parseInt(inputView.inputUserMoney());
+        outputView.remainMoney(money);
+        purchaseGoods(money);
+    }
+
+
+    private void purchaseGoods(int money) {
+        while (goodsManager.validMinPurchase(money)) {
+            String goods = inputView.inputPurchaseGoods();
+            if (!goodsManager.validPurchase(goods, money)) break;
+
+            money = goodsManager.purchaseGoods(goods, money);
+            outputView.remainMoney(money);
+        }
+        returnCoin(money);
+    }
+
+    private void returnCoin(int money) {
+        if (money == 0) return;
+        outputView.returnCoinList(coinMaker.remainCoinList(money));
+    }
+}

src/main/java/vendingmachine/exception/VendingMachineValidator.java

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+package vendingmachine.exception;
+
+import vendingmachine.goods.Goods;
+
+import java.util.HashMap;
+
+public class VendingMachineValidator {
+
+    public void allOfValidInput(String money){
+        validMoneyInputForm(money);
+        validMoneyType(money);
+
+    }
+
+    private void validMoneyInputForm(String money) {
+        final String ONLY_NUMBER = "^[0-9]*$";
+
+        if (!money.matches(ONLY_NUMBER))
+            throw new IllegalArgumentException("[ERROR] 금액은 숫자만 입력하세요.");
+    }
+
+    private void validMoneyType(String money) {
+        if (Integer.parseInt(money) < 10)
+            throw new IllegalArgumentException("[ERROR] 자판기 금액은 10원부터 시작입니다.");
+        if (Integer.parseInt(money) % 10 !=0)
+            throw new IllegalArgumentException("[ERROR] 자판기 금액은 10원 단위로 입력해주세요.");
+    }
+
+    public void validGoodsName(String goods, HashMap<String, Goods> goodsInfo){
+        if(goodsInfo.get(goods)==null)
+            throw new IllegalArgumentException("[ERROR] 상품 리스트에 존재하는 상품만 입력하세요.");
+    }
+
+    public void validGoodsInputForm(String goods) {
+        final String GOODS_INPUT_FORM = "\\[[0-9가-힇A-Za-z]+,?[0-9]*,?[0-9]*\\];?";
+
+        if (goods.replaceAll(GOODS_INPUT_FORM, "").length() != 0)
+            throw new IllegalArgumentException("[ERROR] 상품명, 가격, 수량은 쉼표로, 개별 상품은 대괄호([])로 묶어주세요.");
+    }
+
+    public void validGoodsMoneyType(String money) {
+        int subMoney = Integer.parseInt(money);
+        if (subMoney < 100)
+            throw new IllegalArgumentException("[ERROR] 상품 가격은 100원부터 시작합니다.");
+        if (subMoney % 10 != 0)
+            throw new IllegalArgumentException("[ERROR] 상품 가격은 10원 단위로 입력하세요.");
+    }
+}

src/main/java/vendingmachine/goods/Goods.java

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+package vendingmachine.goods;
+
+public class Goods {
+    private int price;
+    private int amount;
+
+    public Goods(String[] goodsInformation){
+        makeGoodsInfo(goodsInformation);
+    }
+
+    public int getAmount() {
+        return amount;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void reduceAmount() {
+        amount--;
+    }
+
+    void makeGoodsInfo(String[] goodsInformation) {
+        price = Integer.parseInt(goodsInformation[1]);
+        amount = Integer.parseInt(goodsInformation[2]);
+    }
+}
+

src/main/java/vendingmachine/goods/GoodsManager.java

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+package vendingmachine.goods;
+
+import vendingmachine.exception.VendingMachineValidator;
+
+import java.util.HashMap;
+
+public class GoodsManager {
+    VendingMachineValidator vendingMachineValidator = new VendingMachineValidator();
+    private final HashMap<String, Goods> goodsInfo = new HashMap<>();
+    private int minPrice = Integer.MAX_VALUE;
+
+
+    public GoodsManager(String goodsList){
+        makeGoodsInformation(goodsList);
+        minPriceGoodsList();
+    }
+
+    private void makeGoodsInformation(String goodsList) {
+        String[] itemList = goodsList.split(";");
+
+        for (String item : itemList) {
+            String[] goodsInformation = item.replaceAll("[\\[\\]]","").split(",");
+
+            vendingMachineValidator.validGoodsMoneyType(goodsInformation[1]);
+
+            Goods goods = new Goods(goodsInformation);
+            goodsInfo.put(goodsInformation[0],goods);
+        }
+    }
+
+    private void minPriceGoodsList() {
+        for (Goods g : goodsInfo.values())
+            if (g.getPrice() < minPrice) minPrice = g.getPrice();
+    }
+
+    public boolean validPurchase(String purchaseGoods, int money) {
+        vendingMachineValidator.validGoodsName(purchaseGoods,goodsInfo);
+        Goods goods = goodsInfo.get(purchaseGoods);
+        return goods.getPrice() <= money && goods.getAmount() != 0;
+    }
+
+    public boolean validMinPurchase(int money) {
+        return money >= minPrice;
+    }
+
+    public int purchaseGoods(String purchaseGoods, int money) {
+        Goods goods = goodsInfo.get(purchaseGoods);
+        if (goods.getAmount() != 0)
+            goods.reduceAmount();
+        return money - goods.getPrice();
+    }
+
+
+}

src/main/java/vendingmachine/vendingmachine/Coin.java

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+package vendingmachine.vendingmachine;
+
+import java.util.Arrays;
+
+public enum Coin {
+    COIN_500(500, 0),
+    COIN_100(100, 0),
+    COIN_50(50, 0),
+    COIN_10(10, 0);
+
+    private final int amount;
+    private int count;
+
+    Coin(final int amount, final int count) {
+        this.amount = amount;
+        this.count = count;
+    }
+
+
+    // 추가 기능 구현
+    public int getCount() {
+        return count;
+    }
+
+    public int getAmount() {
+        return amount;
+    }
+
+    public void addCoin() {
+        count++;
+    }
+
+    public static Coin getCoin(int amount) {
+        return Arrays.stream(values()).filter(a -> a.getAmount() == amount).findAny().orElseGet(() -> null);
+    }
+
+    public static StringBuilder makeCoinList() {
+        StringBuilder sb = new StringBuilder();
+        Arrays.stream(values()).forEach(coin -> sb.append(coin.getAmount()).append("원 - ").append(coin.getCount()).append("개").append("\n"));
+        return sb;
+    }
+
+
+}

src/main/java/vendingmachine/vendingmachine/CoinMaker.java

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+package vendingmachine.vendingmachine;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.*;
+
+public class CoinMaker {
+
+    public void randomCoin(String money) {
+        int vendingMoney = Integer.parseInt(money);
+        List<Integer> vendingMoneyList = Arrays.asList(500, 100, 50, 10);
+
+        while (vendingMoney != 0) {
+            int num = Randoms.pickNumberInList(vendingMoneyList);
+            if (vendingMoney - num >= 0) {
+                vendingMoney -= num;
+                Coin.getCoin(num).addCoin();
+            }
+        }
+
+    }
+
+    public HashMap<Integer, Integer> remainCoinList(int money) {
+        HashMap<Integer, Integer> coinList = new LinkedHashMap<>();
+
+        for (Coin coin : Coin.values()) {
+            if (money <= 0) break;
+            int require = money / coin.getAmount();
+
+            if (require > coin.getCount()) {
+                money -= (coin.getCount() * coin.getAmount());
+                coinList.put(coin.getAmount(), coin.getCount());
+                continue;
+            }
+
+            money -= (require * coin.getAmount());
+            coinList.put(coin.getAmount(), require);
+        }
+        return coinList;
+    }
+
+
+}

src/main/java/vendingmachine/view/GameMessage.java

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+package vendingmachine.view;
+
+public class GameMessage {
+    public static final String INPUT_VENDINGMACHINE_MONEY = "자판기가 보유하고 있는 금액을 입력해 주세요.";
+    public static final String INPUT_GOODS_PRICE_AMOUNT = "상품명과 가격, 수량을 입력해 주세요.";
+    public static final String INPUT_USER_MONEY = "투입 금액을 입력해 주세요.";
+    public static final String INPUT_PURCHASE_GOODS = "구매할 상품명을 입력해 주세요.";
+
+    public static final String OUTPUT_USER_MONEY = "투입 금액: ";
+    public static final String OUTPUT_VENDINGMACHINE_MONEY = "자판기가 보유한 동전";
+    public static final String OUTPUT_REMAIN_MONEY = "잔돈";
+}

src/main/java/vendingmachine/view/InputView.java

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+package vendingmachine.view;
+
+import camp.nextstep.edu.missionutils.Console;
+import vendingmachine.exception.VendingMachineValidator;
+
+public class InputView {
+    VendingMachineValidator vendingMachineValidator = new VendingMachineValidator();
+
+    public String inputVendingMoney(){
+        System.out.println(GameMessage.INPUT_VENDINGMACHINE_MONEY);
+        String vendingMoney = Console.readLine();
+        vendingMachineValidator.allOfValidInput(vendingMoney);
+        return vendingMoney;
+    }
+
+    public String inputGoodsPriceAmount(){
+        System.out.println(GameMessage.INPUT_GOODS_PRICE_AMOUNT);
+        String goods = Console.readLine();
+        vendingMachineValidator.validGoodsInputForm(goods);
+        return goods;
+    }
+
+    public String inputUserMoney(){
+        System.out.println(GameMessage.INPUT_USER_MONEY);
+        String userMoney = Console.readLine();
+        vendingMachineValidator.allOfValidInput(userMoney);
+        return userMoney;
+    }
+
+    public String inputPurchaseGoods(){
+        System.out.println(GameMessage.INPUT_PURCHASE_GOODS);
+        String goods = Console.readLine();
+        return goods;
+    }
+
+}