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yeonju/docs/README.md

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+## 기능 목록
+
+- [x] 랜덤 숫자 생성 기능
+- [x] 사용자 입력값 받는 기능
+- [x] 입력값 유효성 검증 기능
+- [x] 결과 계산 기능
+- [x] 출력 기능
+- [x] 재시작 기능
+
+## 예외 목록
+
+- 정답값 입력시
+  - [x] 중복되는 숫자가 있을 경우
+  - [x] 3자리가 아닐 경우
+- 재시작 여부 입력시
+  - [x] 1, 2가 아닌 다른 값일 경우

yeonju/src/App.js

@@ -1,5 +1,15 @@
+const BaseballGameController = require("./controller/BaseballGameController");
+
 class App {
-  play() {}
+  #baseballGame;
+
+  play() {
+    this.#baseballGame = new BaseballGameController();
+    this.#baseballGame.startGame();
+  }
 }
 
 module.exports = App;
+
+const app = new App();
+app.play();

yeonju/src/constants/Constants.js

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+const MESSAGE_MC = Object.freeze({
+  START: "숫자 야구 게임을 시작합니다.",
+  INPUT: "숫자를 입력해주세요 : ",
+  END: "3개의 숫자를 모두 맞히셨습니다! 게임 종료",
+  RESTART: "게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.",
+});
+
+const MESSAGE_ERROR = Object.freeze({
+  NO_THREE_DIGIT_NUMBER:
+    "입력값이 유효하지 않습니다. 3자리 숫자를 입력해주세요.",
+  HAS_REPEATED_DIGITS:
+    "입력값이 유효하지 않습니다. 서로 다른 숫자를 입력해주세요.",
+  RESTART: "입력값이 유효하지 않습니다. 1, 2 중에 한 개만 입력주세요.",
+});
+
+module.exports = { MESSAGE_MC, MESSAGE_ERROR };

yeonju/src/controller/BaseballGameController.js

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+const { Console } = require("@woowacourse/mission-utils");
+const { MESSAGE_MC } = require("../constants/Constants");
+const BaseballGame = require("../model/BaseballGame");
+const BaseballGameView = require("../view/BaseballGameView");
+const generateRandomNumber = require("../utils/RandomNumberGenerator");
+const { Validator } = require("../utils/Validator");
+
+class BaseballGameController {
+  #baseballGame;
+  #baseballGameView;
+
+  constructor() {
+    this.#baseballGame = new BaseballGame(generateRandomNumber());
+    this.#baseballGameView = new BaseballGameView();
+  }
+
+  startGame() {
+    this.#baseballGameView.displayWelcomeMessage();
+    this.inputNumber();
+  }
+
+  endGame() {
+    this.#baseballGameView.displayGameRestart();
+    this.inputRestartNumber();
+  }
+
+  inputNumber() {
+    Console.readLine(MESSAGE_MC.INPUT, (playerInput) => {
+      Validator.validateBaseballInput(playerInput);
+
+      const playerInputArray = [...playerInput].map((input) => Number(input));
+      this.handlePlayerInputResult(playerInputArray);
+    });
+  }
+
+  inputRestartNumber() {
+    Console.readLine("", (playerInput) => {
+      const numericInput = Number(playerInput);
+
+      Validator.validateRestartInput(numericInput);
+
+      if (numericInput === 1) {
+        this.#baseballGame.reset();
+        this.startGame();
+      }
+    });
+  }
+
+  handlePlayerInputResult(playerInputArray) {
+    const { strikes, balls } =
+      this.#baseballGame.getStrikesAndBalls(playerInputArray);
+
+    this.#baseballGameView.displayResult(strikes, balls);
+
+    if (strikes === 3) {
+      this.endGame();
+    } else {
+      this.inputNumber();
+    }
+  }
+}
+
+module.exports = BaseballGameController;

yeonju/src/model/BaseballGame.js

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+const generateRandomNumber = require("../utils/RandomNumberGenerator");
+
+class BaseballGame {
+  #answer;
+
+  constructor(answer) {
+    this.#answer = answer;
+  }
+
+  getStrikesAndBalls(userGuess) {
+    let strikes = 0;
+    let balls = 0;
+
+    for (let i = 0; i < this.#answer.length; i++) {
+      if (this.#answer[i] === userGuess[i]) {
+        strikes++;
+      } else if (this.#answer.includes(userGuess[i])) {
+        balls++;
+      }
+    }
+
+    return { strikes, balls };
+  }
+
+  reset() {
+    this.#answer = generateRandomNumber();
+  }
+}
+
+module.exports = BaseballGame;

yeonju/src/utils/RandomNumberGenerator.js

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+const { Random } = require("@woowacourse/mission-utils");
+
+const generateRandomNumber = () => {
+  const uniqueNumbers = new Set();
+
+  while (uniqueNumbers.size < 3) {
+    const number = Random.pickNumberInRange(1, 9);
+    uniqueNumbers.add(number);
+  }
+
+  return Array.from(uniqueNumbers);
+};
+
+module.exports = generateRandomNumber;

yeonju/src/utils/Validator.js

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+const { MESSAGE_ERROR } = require("../constants/Constants");
+
+class Validator {
+  static validateBaseballInput(input) {
+    if (!Validator.isValidThreeDigitNumber(input)) {
+      throw new Error(MESSAGE_ERROR.NO_THREE_DIGIT_NUMBER);
+    }
+
+    if (!Validator.hasNoRepeatedDigits(input)) {
+      throw new Error(MESSAGE_ERROR.HAS_REPEATED_DIGITS);
+    }
+  }
+
+  static isValidThreeDigitNumber(input) {
+    const REGEX = /^[1-9]{3}$/;
+    return REGEX.test(input);
+  }
+
+  static hasNoRepeatedDigits(input) {
+    const digits = new Set([...input.toString()]);
+    return digits.size === 3;
+  }
+
+  static validateRestartInput(input) {
+    if (input !== 1 && input !== 2) {
+      throw new Error(MESSAGE_ERROR.RESTART);
+    }
+  }
+}
+
+module.exports = { Validator };

yeonju/src/view/BaseballGameView.js

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+const { Console } = require("@woowacourse/mission-utils");
+const { MESSAGE_MC } = require("../constants/Constants");
+
+class BaseballGameView {
+  displayWelcomeMessage() {
+    Console.print(MESSAGE_MC.START);
+  }
+
+  displayResult(strikes, balls) {
+    let message = "";
+
+    if (strikes === 0 && balls === 0) {
+      message = "낫싱";
+    }
+
+    if (balls > 0) {
+      message += `${balls}볼 `;
+    }
+
+    if (strikes > 0) {
+      message += `${strikes}스트라이크`;
+    }
+
+    Console.print(message.trim());
+  }
+
+  displayGameStart() {
+    Console.print(MESSAGE_MC.START);
+  }
+
+  displayGameRestart() {
+    Console.print(MESSAGE_MC.END);
+    Console.print(MESSAGE_MC.RESTART);
+  }
+}
+
+module.exports = BaseballGameView;