원지윤 과제 제출

README.md

@@ -0,0 +1,43 @@
+## TODO List
+
+### 공통
+- [X] JPA Audit 기능 설정
+- [X] 데이터 변경 시점에 대한 추적/감사를 위한 메타 데이터 필드 구성
+
+### 게시글
+- [X] 게시글 작성 API 구현
+    - [X] 게시글 작성 서비스 구현
+    - [X] 입력된 필드 검증 후 예외 처리
+- [X] 게시글 수정 API 구현
+    - [X] 게시글 수정 시 예외 케이스 구현
+       - [X] 존재하지 않는 게시글 수정 시 예외 처리
+       - [X] 입력된 필드 검증 후 예외 처리
+    - [X] 게시글 수정 서비스 구현
+- [X] 게시글 삭제 API 구현
+    - [X] 게시글 삭제 시 예외 케이스 구현
+        - [X] 존재하지 않는 게시글 삭제 요청 시 예외 처리
+    - [X] 게시글 삭제 서비스 구현
+- [X] 게시글 조회 API 구현
+    - [X] 게시글 단건 조회 서비스 구현
+    - [X] 게시글 전체 조회 서비스 구현
+      - [X] 단건 조회 시 댓글 목록까지 조회
+
+### 댓글
+- [X] 댓글 작성 API 구현
+    - [X] 존재하지 않는 게시글에 댓글 작성 시 예외 처리
+- [X] 댓글 수정 API 구현
+    - [X] 존재하지 않는 댓글 수정 시 예외 처리
+- [X] 댓글 삭제 API 구현
+    - [X] 존재하지 않는 댓글 삭제 시 예외 처리
+
+
+...
+---
+## 리팩토링
+- [X] 공통 예외/응답처리 코드 만들기
+- [ ] 댓글 페이징 기능
+
+
+## 구현 시 어렵거나 이해가 되지 않는 부분
+- .
+- 

build.gradle

@@ -31,6 +31,8 @@ dependencies {
     annotationProcessor 'org.projectlombok:lombok'
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    implementation 'org.postgresql:postgresql:42.7.2'
+    implementation 'org.springframework.boot:spring-boot-starter-validation'
 }
 
 tasks.named('test') {

src/main/java/io/sparta/board/BoardApplication.java

@@ -2,7 +2,9 @@
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
 
+@EnableJpaAuditing
 @SpringBootApplication
 public class BoardApplication {
 

src/main/java/io/sparta/board/controller/CommentController.java

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+package io.sparta.board.controller;
+
+import io.sparta.board.dto.ApiResponse;
+import io.sparta.board.dto.comment.CommentRequestDto;
+import io.sparta.board.dto.comment.CommentResponseDto;
+import io.sparta.board.service.CommentService;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/posts")
+public class CommentController {
+    private final CommentService commentService;
+
+    public CommentController(CommentService commentService) {
+        this.commentService = commentService;
+    }
+
+    // 작성
+    @PostMapping("/{postId}/comments")
+    public ResponseEntity<ApiResponse<CommentResponseDto>> addComment(@PathVariable UUID postId, @RequestBody @Valid CommentRequestDto requestDto) {
+        CommentResponseDto response = commentService.addComment(postId, requestDto);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    // 수정
+    @PutMapping("/{postId}/comments/{commentId}")
+    public ResponseEntity<ApiResponse<CommentResponseDto>> updateComment(
+            @PathVariable UUID postId,
+            @PathVariable UUID commentId,
+            @RequestBody @Valid CommentRequestDto requestDto) {
+        CommentResponseDto response = commentService.updateComment(postId, commentId, requestDto);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    // 삭제
+    @DeleteMapping("/{postId}/comments/{commentId}")
+    public ResponseEntity<ApiResponse<UUID>> deleteComment(
+            @PathVariable UUID postId,
+            @PathVariable UUID commentId) {
+        UUID deletedId = commentService.deleteComment(postId, commentId);
+        return ResponseEntity.ok(ApiResponse.success(deletedId));
+    }
+}

src/main/java/io/sparta/board/controller/PostController.java

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+package io.sparta.board.controller;
+
+import io.sparta.board.dto.ApiResponse;
+import io.sparta.board.dto.post.PostDetailResponseDto;
+import io.sparta.board.dto.post.PostRequestDto;
+import io.sparta.board.dto.post.PostResponseDto;
+import io.sparta.board.service.PostService;
+import jakarta.validation.Valid;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api")
+public class PostController {
+    private final PostService postService;
+
+    public PostController(PostService postService) {
+        this.postService = postService;
+    }
+
+    // 작성
+    @PostMapping("/posts")
+    public ResponseEntity<ApiResponse<PostResponseDto>> createPost(@RequestBody @Valid PostRequestDto requestDto) {
+        PostResponseDto response = postService.createPost(requestDto);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    // 수정
+    @PutMapping("/posts/{id}")
+    public ResponseEntity<ApiResponse<PostResponseDto>> updatePost(@PathVariable UUID id, @RequestBody @Valid PostRequestDto requestDto) {
+        PostResponseDto response = postService.updatePost(id, requestDto);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    // 삭제
+    @DeleteMapping("/posts/{id}")
+    public ResponseEntity<ApiResponse<UUID>> deletePost(@PathVariable UUID id) {
+        UUID deletedId = postService.deletePost(id);
+        return ResponseEntity.ok(ApiResponse.success(deletedId));
+    }
+
+    // 전체 조회
+    @GetMapping("/posts")
+    public ResponseEntity<ApiResponse<List<PostResponseDto>>> getAllPosts() {
+        List<PostResponseDto> response = postService.getAllPosts();
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+
+    // 단건 조회
+    @GetMapping("/posts/{id}")
+    public ResponseEntity<ApiResponse<PostDetailResponseDto>> getPost(@PathVariable UUID id) {
+        PostDetailResponseDto response = postService.getPost(id);
+        return ResponseEntity.ok(ApiResponse.success(response));
+    }
+}

src/main/java/io/sparta/board/dto/ApiResponse.java

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+package io.sparta.board.dto;
+
+import lombok.Getter;
+
+@Getter
+public class ApiResponse<T> {
+    private final boolean success;
+    private final T data;
+    private final String error;
+
+    private ApiResponse(boolean success, T data, String error) {
+        this.success = success;
+        this.data = data;
+        this.error = error;
+    }
+
+    public static <T> ApiResponse<T> success(T data) {
+        return new ApiResponse<>(true, data, null);
+    }
+
+    public static <T> ApiResponse<T> error(String errorMessage) {
+        return new ApiResponse<>(false, null, errorMessage);
+    }
+}

src/main/java/io/sparta/board/dto/comment/CommentRequestDto.java

@@ -0,0 +1,10 @@
+package io.sparta.board.dto.comment;
+
+import jakarta.validation.constraints.NotBlank;
+import lombok.Getter;
+
+@Getter
+public class CommentRequestDto {
+    @NotBlank
+    private String content;
+}

src/main/java/io/sparta/board/dto/comment/CommentResponseDto.java

@@ -0,0 +1,33 @@
+package io.sparta.board.dto.comment;
+
+import io.sparta.board.entity.Comment;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+public class CommentResponseDto {
+    private final UUID id;
+    private final String content;
+    private final LocalDateTime createdAt;
+    private final LocalDateTime updatedAt;
+
+    @Builder
+    public CommentResponseDto(UUID id, String content, LocalDateTime createdAt, LocalDateTime updatedAt) {
+        this.id = id;
+        this.content = content;
+        this.createdAt = createdAt;
+        this.updatedAt = updatedAt;
+    }
+
+    public static CommentResponseDto from(Comment comment) {
+        return CommentResponseDto.builder()
+                .id(comment.getId())
+                .content(comment.getContent())
+                .createdAt(comment.getCreatedAt())
+                .updatedAt(comment.getUpdatedAt())
+                .build();
+    }
+}

src/main/java/io/sparta/board/dto/post/PostDetailResponseDto.java

@@ -0,0 +1,41 @@
+package io.sparta.board.dto.post;
+
+import io.sparta.board.dto.comment.CommentResponseDto;
+import io.sparta.board.entity.Post;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.UUID;
+
+@Getter
+public class PostDetailResponseDto {
+    private final UUID id;
+    private final String title;
+    private final String content;
+    private final LocalDateTime createdAt;
+    private final LocalDateTime updatedAt;
+    private List<CommentResponseDto> comments;
+
+    @Builder
+    public PostDetailResponseDto(UUID id, String title, String content, LocalDateTime createdAt, LocalDateTime updatedAt, List<CommentResponseDto> comments) {
+        this.id = id;
+        this.title = title;
+        this.content = content;
+        this.createdAt = createdAt;
+        this.updatedAt = updatedAt;
+        this.comments = comments;
+    }
+
+    public static PostDetailResponseDto from(Post post, List<CommentResponseDto> comments) {
+        return PostDetailResponseDto.builder()
+                .id(post.getId())
+                .title(post.getTitle())
+                .content(post.getContent())
+                .createdAt(post.getCreatedAt())
+                .updatedAt(post.getUpdatedAt())
+                .comments(comments)
+                .build();
+    }
+}

src/main/java/io/sparta/board/dto/post/PostRequestDto.java

@@ -0,0 +1,12 @@
+package io.sparta.board.dto.post;
+
+import jakarta.validation.constraints.NotBlank;
+import lombok.Getter;
+
+@Getter
+public class PostRequestDto {
+    @NotBlank
+    private String title;
+    @NotBlank
+    private String content;
+}

src/main/java/io/sparta/board/dto/post/PostResponseDto.java

@@ -0,0 +1,37 @@
+package io.sparta.board.dto.post;
+
+import io.sparta.board.entity.Post;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+@Getter
+public class PostResponseDto {
+    private final UUID id;
+    private final String title;
+    private final String content;
+    private final LocalDateTime createdAt;
+    private final LocalDateTime updatedAt;
+
+    @Builder
+    public PostResponseDto(UUID id, String title, String content, LocalDateTime createdAt, LocalDateTime updatedAt) {
+        this.id = id;
+        this.title = title;
+        this.content = content;
+        this.createdAt = createdAt;
+        this.updatedAt = updatedAt;
+    }
+
+    // 정적 팩토리 메서드: Post 엔티티로부터 DTO 생성
+    public static PostResponseDto from(Post post) {
+        return PostResponseDto.builder()
+                .id(post.getId())
+                .title(post.getTitle())
+                .content(post.getContent())
+                .createdAt(post.getCreatedAt())
+                .updatedAt(post.getUpdatedAt())
+                .build();
+    }
+}

src/main/java/io/sparta/board/entity/BaseEntity.java

@@ -0,0 +1,35 @@
+package io.sparta.board.entity;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.EntityListeners;
+import jakarta.persistence.MappedSuperclass;
+import lombok.Getter;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.annotation.LastModifiedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import java.time.LocalDateTime;
+
+@Getter
+@MappedSuperclass
+@EntityListeners(AuditingEntityListener.class)
+public abstract class BaseEntity {
+    @CreatedDate
+    @Column(updatable = false)
+    private LocalDateTime createdAt;
+
+    @LastModifiedDate
+    @Column
+    private LocalDateTime updatedAt;
+
+    @Column
+    private Boolean deleted = false;
+
+    @Column
+    private LocalDateTime deletedAt;
+
+    public void softDelete() {
+        deleted = true;
+        deletedAt = LocalDateTime.now();
+    }
+}