[feat] 조회수, 댓글수 카운트 기능 구현 & 카테고리 추가, 조회 구현#206

src/main/java/com/back/domain/post/category/controller/CategoryController.java

@@ -0,0 +1,39 @@
+package com.back.domain.post.category.controller;
+
+import com.back.domain.post.category.dto.request.CategoryCreateRequestDto;
+import com.back.domain.post.category.entity.Category;
+import com.back.domain.post.category.service.CategoryService;
+import com.back.global.rsData.RsData;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/category")
+@Tag(name = "ApiCategoryController", description = "API 카테고리 컨트롤러")
+@RequiredArgsConstructor
+public class CategoryController {
+
+  private final CategoryService categoryService;
+
+  @PostMapping
+  @Operation(summary = "카테고리 생성")
+  public RsData<Category> createCategory(
+      @Valid @RequestBody CategoryCreateRequestDto reqBody
+  ) {
+    return RsData.successOf(categoryService.createCategory(reqBody)); // code=200, message="success"
+  }
+
+  @GetMapping
+  @Operation(summary = "카테고리 목록 조회")
+  public RsData<List<Category>> getCategories() {
+    return RsData.successOf(categoryService.getCategories()); // code=200, message="success"
+  }
+}

src/main/java/com/back/domain/post/category/dto/request/CategoryCreateRequestDto.java

@@ -0,0 +1,11 @@
+package com.back.domain.post.category.dto.request;
+
+import jakarta.validation.constraints.NotBlank;
+
+public record CategoryCreateRequestDto(
+    @NotBlank(message = "이름은 필수입니다.")
+    String name,
+    @NotBlank (message = "설명은 필수입니다.")
+    String description
+) {
+}

src/main/java/com/back/domain/post/category/service/CategoryService.java

@@ -0,0 +1,33 @@
+package com.back.domain.post.category.service;
+
+import com.back.domain.post.category.dto.request.CategoryCreateRequestDto;
+import com.back.domain.post.category.entity.Category;
+import com.back.domain.post.category.repository.CategoryRepository;
+import java.util.List;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+@Service
+@RequiredArgsConstructor
+public class CategoryService {
+
+  private final CategoryRepository categoryRepository;
+
+  // 카테고리 작성 로직
+  @Transactional
+  public Category createCategory(CategoryCreateRequestDto reqBody) {
+    Category category = Category.builder()
+        .name(reqBody.name())
+        .description(reqBody.description())
+        .build();
+
+    return categoryRepository.save(category);
+  }
+
+  // 카테고리 목록 조회 로직
+  @Transactional(readOnly = true)
+  public List<Category> getCategories() {
+    return categoryRepository.findAll();
+  }
+}

src/main/java/com/back/domain/post/comment/service/CommentService.java

@@ -32,6 +32,9 @@ public class CommentService {
   @Transactional
   public CommentResponseDto createComment(Long postId, CommentCreateRequestDto reqBody) {
     User user = rq.getActor();
+    if (user == null) {
+      throw new IllegalStateException("로그인한 사용자만 댓글을 작성할 수 있습니다.");
+    }
 
     Post post = postRepository.findById(postId)
         .orElseThrow(() -> new IllegalArgumentException("게시글이 존재하지 않습니다. id=" + postId));
@@ -51,6 +54,10 @@ public CommentResponseDto createComment(Long postId, CommentCreateRequestDto req
     );
 
     Comment saved = commentRepository.save(comment);
+
+    // 게시글 댓글 수 증가
+    post.increaseCommentCount();
+
     // 활동 점수: 댓글 작성 +0.2
     abvScoreService.awardForComment(user.getId());
     return new CommentResponseDto(saved);
@@ -100,13 +107,19 @@ public CommentResponseDto updateComment(Long postId, Long commentId, CommentUpda
   public void deleteComment(Long postId, Long commentId) {
     User user = rq.getActor();
 
+    Post post = postRepository.findById(postId)
+        .orElseThrow(() -> new IllegalArgumentException("게시글이 존재하지 않습니다. id=" + postId));
+
     Comment comment = findCommentWithValidation(postId, commentId);
 
     if (!comment.getUser().equals(user)) {
       throw new IllegalStateException("본인의 댓글만 삭제할 수 있습니다.");
     }
 
     comment.updateStatus(CommentStatus.DELETED);
+
+    // 게시글 댓글 수 감소
+    post.decreaseCommentCount();
     // 활동 점수: 댓글 삭제 시 -0.2 (작성자 기준)
     abvScoreService.revokeForComment(user.getId());
 

src/main/java/com/back/domain/post/post/controller/PostController.java

@@ -7,6 +7,8 @@
 import com.back.domain.post.post.service.PostService;
 import com.back.global.rsData.RsData;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import java.util.List;
@@ -41,6 +43,7 @@ public class PostController {
   @PostMapping(consumes = MediaType.MULTIPART_FORM_DATA_VALUE)
   @Operation(summary = "게시글 작성")
   public RsData<PostResponseDto> createPost(
+      @Parameter(description = "게시글 JSON", required = true, schema = @Schema(type = "string", format = "json"))
       @RequestPart("post") @Valid PostCreateRequestDto reqBody,
       @RequestPart(value = "images", required = false) List<MultipartFile> images
   ) {

src/main/java/com/back/domain/post/post/entity/Post.java

@@ -87,13 +87,15 @@ public class Post {
   @Column(name = "like_count", nullable = false)
   private Integer likeCount = 0;
 
-  // 게시글 댓글 수
-  @Column(name = "comment_count")
-  private Integer commentCount;
+  // 게시글 댓글 수 (기본값: 0)
+  @Builder.Default
+  @Column(name = "comment_count", nullable = false)
+  private Integer commentCount = 0;
 
-  // 게시글 조회 수
-  @Column(name = "view_count")
-  private Integer viewCount;
+  // 게시글 조회 수 (기본값: 0)
+  @Builder.Default
+  @Column(name = "view_count", nullable = false)
+  private Integer viewCount = 0;
 
   public void updateCategory(Category category) {
     this.category = category;
@@ -139,4 +141,18 @@ public void increaseLikeCount() {
   public void decreaseLikeCount() {
     this.likeCount--;
   }
+
+  public void increaseCommentCount() {
+    this.commentCount++;
+  }
+
+  public void decreaseCommentCount() {
+    if (this.commentCount > 0) {
+      this.commentCount--;
+    }
+  }
+
+  public void increaseViewCount() {
+    this.viewCount++;
+  }
 }

src/main/java/com/back/domain/post/post/service/PostService.java

@@ -136,10 +136,12 @@ public List<PostResponseDto> getPosts(PostSortScrollRequestDto reqBody) {
   // 게시글 단건 조회 로직
   @Transactional(readOnly = true)
   public PostResponseDto getPost(Long postId) {
-    return new PostResponseDto(
-        postRepository.findById(postId)
-            .orElseThrow(() -> new NoSuchElementException("해당 게시글을 찾을 수 없습니다. ID: " + postId))
-    );
+    Post post = postRepository.findById(postId)
+        .orElseThrow(() -> new NoSuchElementException("해당 게시글을 찾을 수 없습니다. ID: " + postId));
+
+    post.increaseViewCount();
+
+    return new PostResponseDto(post);
   }
 
   // 게시글 수정 로직