[BE5]정명희

.gitignore

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+.idea
+.out

com/ll/wiseSaying/src/App.java

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+package com.ll.wiseSaying.src;
+
+import java.util.Scanner;
+
+public class App {
+    public Scanner sc;
+    static String[] commands = {"등록", "목록", "빌드", "종료"};
+    static String patternDelete = "삭제\\?id=\\d+";
+    static String patternUpdate = "수정\\?id=\\d+";
+
+    static boolean commandNeedId = false;
+
+    WiseSayingController wiseSayingController;
+
+    public void run(Scanner sc) {
+
+        this.sc = sc;
+        wiseSayingController = new WiseSayingController(sc);
+        System.out.println("== 명언 앱 ==");
+        while (true) {
+            System.out.printf("명령) ");
+            String commandInput = sc.nextLine();
+            String command = "";
+            int id = 0;
+            if(!validCommand(commandInput)) {
+                System.out.println("올바른 명령어가 아닙니다.");
+                continue;
+            }
+            if(commandNeedId){
+                command = commandInput.split("\\?")[0];
+                id = Integer.parseInt(commandInput.split("=")[1]);
+            }else{
+                command = commandInput;
+            }
+            switch (command) {
+                case "등록":
+                    wiseSayingController.addWiseSaying();
+                    break;
+                case "목록":
+                    wiseSayingController.showWiseSaying();
+                    break;
+                case "빌드":
+                    wiseSayingController.buildJson();
+                    break;
+                case "삭제":
+                    wiseSayingController.removeWiseSaying(id);
+                    break;
+                case "수정":
+                    wiseSayingController.updateWiseSaying(id);
+                    break;
+                case "종료":
+                    wiseSayingController.terminate();
+                    sc.close();
+                    return;
+            }
+        }
+    }
+
+    public boolean validCommand(String command) {
+        if(command.length() == 2) {
+            commandNeedId = false;
+            for (String c : commands) {
+                if (c.equals(command)) {
+                    return true;
+                }
+            }
+        } else if (command.matches(patternDelete) || command.matches(patternUpdate)) {
+            commandNeedId = true;
+            return true;
+        }
+        return false;
+    }
+
+}

com/ll/wiseSaying/src/Main.java

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+package com.ll.wiseSaying.src;
+
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        App app = new App();
+        Scanner scanner = new Scanner(System.in);
+        app.run(scanner);
+    }
+}

com/ll/wiseSaying/src/WiseSaying.java

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+package com.ll.wiseSaying.src;
+
+import org.json.simple.JSONObject;
+
+public class WiseSaying {
+    int id;
+    String content;
+    String author;
+
+    public WiseSaying(int id, String content, String author) {
+        this.id = id;
+        this.content = content;
+        this.author = author;
+    }
+
+    public JSONObject toJson() {
+        JSONObject obj = new JSONObject();
+        obj.put("id", this.id);
+        obj.put("quote", this.content);
+        obj.put("author", this.author);
+        return obj;
+    }
+}

com/ll/wiseSaying/src/WiseSayingController.java

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+package com.ll.wiseSaying.src;
+
+import java.util.Scanner;
+
+public class WiseSayingController {
+    WiseSayingService wiseSayingService = new WiseSayingService();
+    Scanner sc;
+
+    public WiseSayingController(Scanner sc) {
+        this.sc = sc;
+    }
+    public void addWiseSaying() {
+        System.out.printf("명언 : ");
+        String content = sc.nextLine();
+        System.out.printf("작가 : ");
+        String author = sc.nextLine();
+        int id = wiseSayingService.addWiseSaying(content, author);
+        System.out.println(id + "번 명언이 등록되었습니다.");
+    }
+
+    public void removeWiseSaying(int id) {
+        try {
+            wiseSayingService.removeWiseSaying(id);
+            System.out.println(id + "번째 명언이 삭제되었습니다.");
+        }catch (Exception e){
+            System.out.println(e);
+        }
+
+    }
+
+    public void updateWiseSaying(int id) {
+        try {
+            System.out.printf("명언 : ");
+            String content = sc.nextLine();
+            System.out.printf("작가 : ");
+            String author = sc.nextLine();
+            wiseSayingService.updateWiseSaying(id, content, author);
+            System.out.println(id + "번 명언이 수정되었습니다.");
+        } catch (Exception e){
+            System.out.println(e);
+        }
+
+    }
+
+    public void showWiseSaying() {
+        System.out.println("번호 / 작가 / 명언");
+        System.out.println("----------------------");
+        System.out.println(wiseSayingService.getAllWiseSaying());
+    }
+
+    public void buildJson() {
+        wiseSayingService.buildJson();
+        System.out.println("data.json 파일의 내용이 갱신되었습니다.");
+    }
+
+    public void terminate(){
+        wiseSayingService.saveLastId();
+    }
+}

com/ll/wiseSaying/src/WiseSayingRepository.java

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+package com.ll.wiseSaying.src;
+import java.util.HashMap;
+import java.util.Map;
+
+public class WiseSayingRepository {
+    public Map<Integer, WiseSaying> wiseSayingList = new HashMap<>();
+    public int lastId = 0;
+
+    public void addWiseSaying(WiseSaying wiseSaying) {
+        wiseSayingList.put(wiseSaying.id, wiseSaying);
+    }
+
+    public void removeWiseSaying(int id) {
+        wiseSayingList.remove(id);
+    }
+
+    public WiseSaying getWiseSaying(int id) {
+        return wiseSayingList.get(id);
+    }
+
+    public Map<Integer, WiseSaying> getAllWiseSayings() {
+        return wiseSayingList;
+    }
+
+    public void updateWiseSaying(int id, String quote, String author) {
+        wiseSayingList.put(id, new WiseSaying(id, quote, author));
+    }
+
+    public int getLastId() {
+        return lastId;
+    }
+}

com/ll/wiseSaying/src/WiseSayingService.java

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+package com.ll.wiseSaying.src;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.Map;
+
+import org.json.simple.JSONArray;
+public class WiseSayingService {
+    WiseSayingRepository wiseSayingRepository = new WiseSayingRepository();
+    static String dirName = "db/wiseSaying/";
+
+    /*
+    * @return 생성된 명언의 id
+    * */
+    public int addWiseSaying(String content, String author) {
+        WiseSaying wiseSaying = new WiseSaying(++wiseSayingRepository.lastId, content, author);
+        wiseSayingRepository.addWiseSaying(wiseSaying);
+        saveWiseSayingAsFile(wiseSaying);
+        return wiseSaying.id;
+    }
+
+    public void removeWiseSaying(int id) {
+        if(wiseSayingRepository.getWiseSaying(id) != null){
+            wiseSayingRepository.removeWiseSaying(id);
+        } else {
+            throw new IllegalArgumentException(String.format("%d번 명언은 존재하지 않습니다.", id));
+        }
+    }
+
+    public void updateWiseSaying(int id, String content, String author) {
+        if(wiseSayingRepository.getWiseSaying(id) != null){
+            wiseSayingRepository.updateWiseSaying(id, content, author);
+        } else {
+            throw new IllegalArgumentException(String.format("%d번 명언은 존재하지 않습니다.", id));
+        }
+    }
+
+    public String getAllWiseSaying() {
+        StringBuilder sb = new StringBuilder();
+        Map<Integer, WiseSaying> wiseSayingList = wiseSayingRepository.wiseSayingList;
+        String result = "";
+        for (int i : wiseSayingList.keySet()) {
+            WiseSaying ws = wiseSayingList.get(i);
+            result = sb.append(ws.id).append(" / ").append(ws.author).append(" / ").append(ws.content).append("\n").toString();
+        }
+        return result;
+    }
+
+    public void buildJson() {
+        String fileName = dirName + "data.json";
+        Map<Integer, WiseSaying> wiseSayingList = wiseSayingRepository.wiseSayingList;
+        JSONArray jsonList = new JSONArray();
+        for (int i : wiseSayingList.keySet()) {
+            jsonList.add(wiseSayingList.get(i).toJson());
+        }
+        saveFile(fileName, jsonList.toJSONString());
+    }
+
+
+
+    public void saveWiseSayingAsFile(WiseSaying wiseSaying) {
+        String fileName = String.format("%s%d.json", dirName, wiseSaying.id);
+        saveFile(fileName, wiseSaying.toJson().toJSONString());
+    }
+    public void saveFile(String fileName, String content) {
+        try {
+            FileWriter file = new FileWriter(fileName);
+            file.write(content);
+            file.flush();
+            file.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void saveLastId() {
+        String fileName = dirName + "lastId.txt";
+        saveFile(fileName, String.valueOf(wiseSayingRepository.lastId));
+    }
+}

com/ll/wiseSaying/test/TestUtil.java

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+package com.ll.wiseSaying.test;
+
+import java.io.*;
+import java.util.Scanner;
+
+public class TestUtil {
+    // gen == generate 생성하다.
+    // 테스트용 스캐너 생성
+    public static Scanner genScanner(final String input) {
+        final InputStream in = new ByteArrayInputStream(input.getBytes());
+
+        return new Scanner(in);
+    }
+
+    // System.out의 출력을 스트림으로 받기
+    public static ByteArrayOutputStream setOutToByteArray() {
+        final ByteArrayOutputStream output = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(output));
+
+        return output;
+    }
+
+    // setOutToByteArray 함수의 사용을 완료한 후 정리하는 함수, 출력을 다시 정상화 하는 함수
+    public static void clearSetOutToByteArray(final ByteArrayOutputStream output) {
+        System.setOut(new PrintStream(new FileOutputStream(FileDescriptor.out)));
+        try {
+            output.close();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

com/ll/wiseSaying/test/WiseSayingControllerTest.java

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+package com.ll.wiseSaying.test;
+
+import com.ll.wiseSaying.src.App;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import java.util.*;
+import java.io.ByteArrayOutputStream;
+
+public class WiseSayingControllerTest {
+    App app;
+    @BeforeEach
+    void beforeEach() {
+        app = new App();
+    }
+
+    @Test
+    @DisplayName("등록 명령 처리")
+    void addWiseSaying() {
+        String input = """
+            등록
+            현재를 사랑하라.
+            작자미상
+            종료
+            """;
+
+        Scanner scanner = TestUtil.genScanner(input);
+
+        ByteArrayOutputStream outputStream = TestUtil.setOutToByteArray();
+
+        app.run(scanner);
+        String output = outputStream.toString().trim();
+        assertThat(output)
+                .contains("== 명언 앱 ==")
+                .contains("명언 :")
+                .contains("작가 :")
+                .contains("1번 명언이 등록되었습니다.");
+        TestUtil.clearSetOutToByteArray(outputStream);
+    }
+
+    @Test
+    @DisplayName("목록 명령 처리")
+    void showWiseSaying() {
+        String input = """
+                등록
+                현재를 사랑하라.
+                작자미상
+                등록
+                과거에 집착하지 마라.
+                작자미상
+                목록
+                삭제?id=1
+                삭제?id=1
+                """;
+
+        Scanner scanner = TestUtil.genScanner(input);
+
+        ByteArrayOutputStream outputStream = TestUtil.setOutToByteArray();
+
+        app.run(scanner);
+        String output = outputStream.toString().trim();
+
+        assertThat(output)
+                .contains("== 명언 앱 ==")
+                .contains("1 / 작자미상 / 현재를 사랑하라.")
+                .contains("2 / 작자미상 / 과거에 집착하지 마라.")
+                .contains("1번 명언이 삭제되었습니다.")
+                .contains("1번 명언은 존재하지 않습니다.");
+
+        TestUtil.clearSetOutToByteArray(outputStream);
+    }
+
+}

db/wiseSaying/1.json

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+{"quote":"현재를 사랑하라.","author":"작자미상","id":1}