[로또 미션] 최규원 미션 제출합니다.

src/main/java/Constant.java

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+public class Constant {
+
+    public static final int LOTTO_PRICE = 1000;
+    public static final int LOTTO_SIZE = 6;
+    public static final int MAX_LOTTO_NUMBER = 45;
+    public static final int MIN_LOTTO_NUMBER = 1;
+    public static final int THREE_COUNT = 3;
+    public static final int FOUR_COUNT = 4;
+    public static final int FIVE_COUNT = 5;
+    public static final int SIX_COUNT = 6;
+    public static final int ZERO_COUNT = 0;
+
+    public static final int FIFTH_PRICE = 5000;
+    public static final int FOURTH_PRICE = 50000;
+    public static final int THIRD_PRICE = 1500000;
+    public static final int SECOND_PRICE = 30000000;
+    public static final int FIRST_PRICE = 2000000000;
+
+    public static final String SEPARATOR = ",";
+
+    // InputView
+
+    public static final String PRICE_QUERY = "구입금액을 입력해 주세요.";
+    public static final String WIN_LOTTO_QUERY = "지난 주 당첨 번호를 입력해 주세요.";
+    public static final String BONUS_QUERY = "보너스 볼을 입력해 주세요";
+    public static final String MANUAL_COUNT_QUERY = "수동으로 구매할 로또 수를 입력해 주세요.";
+    public static final String MANUAL_LOTTO_QUERY = "수동으로 구매할 번호를 입력해 주세요.";
+
+
+    // ResultView
+    public static final String WIN_RESULT = "당첨 통계";
+    public static final String LINES = "---------";
+    public static final String LOTTO_BUY_RESULT_1 = "수동으로 ";
+    public static final String LOTTO_BUY_RESULT_2 = "장 자동으로";
+    public static final String LOTTO_BUY_RESULT_3 = "개를 구매했습니다.";
+    public static final String PROFIT_RESULT_1 = "총 수익률은 ";
+    public static final String PROFIT_RESULT_2 = "입니다.";
+    public static final String STATICS_RESULT_1 = "개 일치";
+    public static final String STATICS_RESULT_2 = " 보너스볼 일치";
+    public static final String STATICS_RESULT_3 = "원";
+    public static final String STATICS_RESULT_4 = "개";
+    public static final String OPEN_PARENTHESES = "(";
+    public static final String CLOSE_PARENTHESES = ")";
+    public static final String DASH = "-";
+    public static final String BLANK = " ";
+
+    //exceptions
+    public static final String RANGE_EXCEPTION = "로또 번호는 1부터 45 사이여야 합니다.";
+    public static final String SIZE_EXCEPTION = "로또 번호는 6개입니다.";
+    public static final String DUPLICATE_EXCEPTION = "로또 번호는 중복이 불가합니다.";
+    public static final String VALUE_EXCEPTION = "로또 번호는 숫자여야 합니다.";
+    public static final String PRICE_VALUE_EXCEPTION = "가격은 숫자여야 합니다.";
+    public static final String BONUS_DUPLICATE_EXCEPTION = "보너스 볼은 중복이 불가합니다.";
+    public static final String LOTTO_PRICE_EXCEPTION = "로또는 천원 단위로만 구입이 가능합니다.";
+
+
+}

src/main/java/Main.java

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+import controller.LottoController;
+public class Main {
+    public static void main(String[] args) {
+        LottoController lottoController = new LottoController();
+        lottoController.lottoStart();
+
+    }
+}

src/main/java/controller/LottoController.java

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+package controller;
+
+import model.BuyLotto;
+import model.Lotto;
+import model.ProfitCalculator;
+import model.WinLotto;
+import view.InputView;
+import view.ResultView;
+
+import java.util.List;
+
+public class LottoController {
+
+    public void lottoStart() {
+
+        int price = InputView.getPrice();
+        int manualCount = InputView.getManualCount();
+        BuyLotto buyLotto = new BuyLotto(price, manualCount, InputView.getManualLottos(manualCount));
+        List<Lotto> lottos = buyLotto
+                .generateLotto();
+
+        ResultView.printLottos(manualCount, lottos);
+
+        WinLotto winLotto = new WinLotto(InputView.getWinLotto(), lottos, InputView.getBonusBall());
+        winLotto.updateWinningStates(lottos);
+        ResultView.printStatics(winLotto.getWinningStates());
+
+        ProfitCalculator profitCalculator = new ProfitCalculator();
+        ResultView.printProfit(profitCalculator.calculateProfit(winLotto.getWinPrize(), price));
+
+    }
+
+
+}

src/main/java/model/BuyLotto.java

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+package model;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class BuyLotto {
+    private LottoMoney totalPrice;
+    private int lottoCount;
+    private int manualLottoCount;
+    private List<String> manualLottoList;
+    private List<Integer> numberList;
+
+    public BuyLotto(int totalPrice, int manualLottoCount, List<String> manualLottoList) {
+        numberList = new ArrayList<>();
+
+        for (int i = Constant.MIN_LOTTO_NUMBER; i <= Constant.MAX_LOTTO_NUMBER; i++) {
+            numberList.add(i);
+        }
+        this.manualLottoCount = manualLottoCount;
+        this.manualLottoList = manualLottoList;
+        this.totalPrice = new LottoMoney(String.valueOf(totalPrice));
+        this.lottoCount = totalPrice / Constant.LOTTO_PRICE - manualLottoCount;
+    }
+
+    private List<Lotto> convertManualLottoList(List<String> manualLottoList) {
+        return manualLottoList.stream()
+                .map(this::parseLottoNumbers)
+                .collect(Collectors.toList());
+    }
+
+    private Lotto parseLottoNumbers(String lotto) {
+        List<LottoNumber> numbers = Arrays.stream(lotto.split(Constant.SEPARATOR))
+                .map(String::trim)
+                .map(s -> new LottoNumber(s))
+                .collect(Collectors.toList());
+        return new Lotto(numbers);
+    }
+
+    public List<Lotto> generateLotto() {
+        List<Lotto> lottos = convertManualLottoList(manualLottoList);
+
+        for (int i = 0; i < lottoCount; i++) {
+            lottos.add(new Lotto(generateRandomNumbers()));
+        }
+
+        return lottos;
+    }
+
+    private List<LottoNumber> generateRandomNumbers() {
+        Collections.shuffle(numberList);
+        return numberList.subList(Constant.ZERO_COUNT, Constant.LOTTO_SIZE)
+                .stream()
+                .map(n -> new LottoNumber(String.valueOf(n)))
+                .sorted(Comparator.comparingInt(LottoNumber::getNumber)) // 정렬
+                .collect(Collectors.toList());
+    }
+}

src/main/java/model/Lotto.java

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+package model;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+public class Lotto {
+    private List<LottoNumber> numbers = new ArrayList<>();
+
+    public Lotto(List<LottoNumber> numbers) {
+        validateSize(numbers);
+        validateDuplicate(numbers);
+        this.numbers = new ArrayList<>(numbers);
+    }
+
+    @Override
+    public String toString() {
+        return numbers.toString();
+    }
+
+    public List<LottoNumber> getNumbers() {
+        return new ArrayList<>(numbers);
+    }
+
+    private void validateSize(List<LottoNumber> numbers) {
+        if (numbers.size() != Constant.SIX_COUNT) {
+            throw new IllegalArgumentException(Constant.SIZE_EXCEPTION);
+        }
+    }
+
+    private void validateDuplicate(List<LottoNumber> numbers) {
+        Set<Integer> numberSet = new HashSet<>();
+        for (LottoNumber number : numbers) {
+            numberSet.add(number.getNumber());
+        }
+        if (numberSet.size() != Constant.SIX_COUNT) {
+            throw new IllegalArgumentException(Constant.DUPLICATE_EXCEPTION);
+        }
+    }
+}

src/main/java/model/LottoMoney.java

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+package model;
+
+public class LottoMoney {
+    private final int amount;
+
+    public LottoMoney(String inputAmount) {
+        try {
+            int amount = Integer.parseInt(inputAmount);
+            validateAmount(amount);
+            this.amount = amount;
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException(Constant.PRICE_VALUE_EXCEPTION, e);
+        }
+    }
+
+    private void validateAmount(int amount) {
+        if (amount % Constant.LOTTO_PRICE != 0 || amount < Constant.LOTTO_PRICE) {
+            throw new IllegalArgumentException(Constant.LOTTO_PRICE_EXCEPTION);
+        }
+    }
+
+    public int getAmount() {
+        return amount;
+    }
+}

src/main/java/model/LottoNumber.java

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+package model;
+
+public class LottoNumber {
+    private final int number;
+
+    public LottoNumber(String number) {
+        try {
+            int parsedNumber = Integer.parseInt(number);
+            validateRange(parsedNumber);
+            this.number = parsedNumber;
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException(Constant.VALUE_EXCEPTION, e);
+        }
+    }
+
+    private void validateRange(int number) {
+        if (number < Constant.MIN_LOTTO_NUMBER || number > Constant.MAX_LOTTO_NUMBER) {
+            throw new IllegalArgumentException(Constant.RANGE_EXCEPTION);
+        }
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(number);
+    }
+}

src/main/java/model/LottoPrize.java

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+package model;
+
+public enum LottoPrize {
+    FIFTH(Constant.THREE_COUNT, Constant.FIFTH_PRICE, false),
+    FOURTH(Constant.FOUR_COUNT, Constant.FOURTH_PRICE, false),
+    THIRD(Constant.FIVE_COUNT, Constant.THIRD_PRICE, false),
+    SECOND(Constant.FIVE_COUNT, Constant.SECOND_PRICE, true),
+    FIRST(Constant.SIX_COUNT, Constant.FIRST_PRICE, false);
+
+    private final int matchCount;
+    private final int prizeAmount;
+    private final boolean hasBonus;
+
+    LottoPrize(int matchCount, int prizeAmount, boolean hasBonus) {
+        this.matchCount = matchCount;
+        this.prizeAmount = prizeAmount;
+        this.hasBonus = hasBonus;
+    }
+
+    public int getMatchCount() {
+        return matchCount;
+    }
+
+    public int getPrizeAmount() {
+        return prizeAmount;
+    }
+
+    public boolean hasBonus() {
+        return hasBonus;
+    }
+
+}

src/main/java/model/ProfitCalculator.java

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+package model;
+
+public class ProfitCalculator {
+
+    public double calculateProfit(int winPrice, int totalPrice) {
+        return (double) winPrice / totalPrice;
+    }
+
+}

src/main/java/model/WinLotto.java

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+package model;
+
+import java.util.*;
+
+public class WinLotto {
+    private List<LottoNumber> winnerLotto = new ArrayList<>();
+    private List<Lotto> userLottos;
+    private Map<LottoPrize, Integer> winningStates = new LinkedHashMap<>();
+    private int winPrize;
+    private LottoNumber bonusBall;
+
+    public WinLotto(String inputWinnerLotto, List<Lotto> userLottos, String bonusBall) {
+        Arrays.stream(inputWinnerLotto.split(Constant.SEPARATOR))
+                .forEach(e -> winnerLotto.add(new LottoNumber(e.trim())));
+        this.userLottos = userLottos;
+        this.winPrize = Constant.ZERO_COUNT;
+        LottoNumber tempBonusBall = new LottoNumber(bonusBall);
+        if (winnerLotto.stream().anyMatch(winnerNumber -> winnerNumber.getNumber() == tempBonusBall.getNumber())) {
+            throw new IllegalArgumentException(Constant.BONUS_DUPLICATE_EXCEPTION);
+        }
+        this.bonusBall = new LottoNumber(bonusBall);
+        for (LottoPrize prize : LottoPrize.values()) {
+            winningStates.put(prize, Constant.ZERO_COUNT);
+        }
+    }
+
+    private int compareHowManyNumberSame(Lotto lotto) {
+        return (int) lotto.getNumbers().stream()
+                .filter(number -> winnerLotto.stream().anyMatch(winnerNumber -> winnerNumber.getNumber() == number.getNumber()))
+                .count();
+    }
+
+    public int getWinPrize() {
+        return winPrize;
+    }
+
+    public Map<LottoPrize, Integer> getWinningStates() {
+        return winningStates;
+    }
+
+    public void updateWinningStates(List<Lotto> userLottos) {
+        userLottos.forEach(userLotto -> {
+            int matchedNumbers = compareHowManyNumberSame(userLotto);
+            boolean containsBonus = userLotto.getNumbers().stream().anyMatch(number -> number.getNumber() == bonusBall.getNumber());
+
+            if (matchedNumbers == Constant.SIX_COUNT) {
+                updateWinningState(LottoPrize.FIRST);
+            }
+            if (matchedNumbers == Constant.FIVE_COUNT && containsBonus) {
+                updateWinningState(LottoPrize.SECOND);
+            }
+            if (matchedNumbers == Constant.FIVE_COUNT && !containsBonus) {
+                updateWinningState(LottoPrize.THIRD);
+            }
+            if (matchedNumbers == Constant.FOUR_COUNT) {
+                updateWinningState(LottoPrize.FOURTH);
+            }
+            if (matchedNumbers == Constant.THREE_COUNT) {
+                updateWinningState(LottoPrize.FIFTH);
+            }
+        });
+    }
+
+    private void updateWinningState(LottoPrize prize) {
+        winningStates.put(prize, winningStates.get(prize) + 1);
+        winPrize += prize.getPrizeAmount();
+    }
+}