Merge pull request #15 from whatever-mentoring/feature/3-getPost

[feature/3-getPost] 쥬시글 상세 조회 API

src/main/java/com/ewhatever/qna/answer/service/AnswerService.java

@@ -12,7 +12,7 @@
 import org.springframework.stereotype.Service;
 
 import static com.ewhatever.qna.common.Base.BaseResponseStatus.*;
-import static com.ewhatever.qna.common.Constant.ACTIVE;
+import static com.ewhatever.qna.common.Constant.Status.ACTIVE;
 
 @Service
 public class AnswerService {

src/main/java/com/ewhatever/qna/comment/repository/CommentRepository.java

@@ -1,11 +1,15 @@
 package com.ewhatever.qna.comment.repository;
 
 import com.ewhatever.qna.comment.entity.Comment;
+import com.ewhatever.qna.post.entity.Post;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
+import java.util.List;
+
 public interface CommentRepository extends JpaRepository<Comment, Long> {
     Long countByWriter_UserIdxAndStatusEquals(Long userIdx, String status);
     Page<Comment> findByWriter_UserIdxAndStatusEquals(Long userIdx, String status, Pageable pageable);
+    List<Comment> findAllByPost(Post post);
 }

src/main/java/com/ewhatever/qna/comment/service/CommentService.java

@@ -11,7 +11,7 @@
 import org.springframework.transaction.annotation.Transactional;
 
 import static com.ewhatever.qna.common.Base.BaseResponseStatus.*;
-import static com.ewhatever.qna.common.Constant.INACTIVE;
+import static com.ewhatever.qna.common.Constant.Status.INACTIVE;
 
 @Service
 @RequiredArgsConstructor

src/main/java/com/ewhatever/qna/common/Constant.java

@@ -1,7 +1,14 @@
 package com.ewhatever.qna.common;
 
 public class Constant {
-    public static final String ACTIVE = "active";
-    public static final String INACTIVE = "inactive";
-    public static final String LOGOUT = "logout";
+    public static class Status {
+        public static final String ACTIVE = "active";
+        public static final String INACTIVE = "inactive";
+        public static final String LOGOUT = "logout";
+    }
+
+    public static class Role {
+        public static final String SENIOR = "senior";
+        public static final String JUNIOR = "junior";
+    }
 }

src/main/java/com/ewhatever/qna/post/controller/PostController.java

@@ -2,6 +2,7 @@
 
 import com.ewhatever.qna.common.Base.BaseException;
 import com.ewhatever.qna.common.Base.BaseResponse;
+import com.ewhatever.qna.post.dto.GetPostRes;
 import com.ewhatever.qna.post.dto.GetPostsRes;
 import com.ewhatever.qna.post.service.PostService;
 import lombok.RequiredArgsConstructor;
@@ -17,7 +18,7 @@ public class PostController {
     private final PostService postService;
 
     /**
-     * [GET] 주씨글 목록 조회
+     * [GET] 쥬시글 목록 조회
      */
     @ResponseBody
     @GetMapping("")
@@ -31,4 +32,17 @@ public BaseResponse<Page<GetPostsRes>> getPosts(@PageableDefault(size = 10) Page
             return new BaseResponse<>(e.getStatus());
         }
     }
+
+    /**
+     * [GET] 쥬시글 상세 조회
+     */
+    @ResponseBody
+    @GetMapping("/{postIdx}")
+    public BaseResponse<GetPostRes> getPost(@PathVariable Long postIdx, Long userIdx) { // TODO: 추후 getUserIdx로 수정
+        try {
+            return new BaseResponse<>(postService.getPost(postIdx, userIdx));
+        } catch (BaseException e) {
+            return new BaseResponse<>(e.getStatus());
+        }
+    }
 }

src/main/java/com/ewhatever/qna/post/dto/GetPostRes.java

@@ -0,0 +1,35 @@
+package com.ewhatever.qna.post.dto;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class GetPostRes {
+    private String category;
+    private List<String> cardList; // 질문 제목, 질문 상세, 답변(0-3개)
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy.MM.dd", timezone = "Asia/Seoul")
+    private LocalDateTime date;
+    private Long commentCount;
+    private Long scrapCount;
+    private Boolean isScrap;
+    private List<CommentDto> commentList;
+
+    @Getter
+    @AllArgsConstructor
+    @NoArgsConstructor
+    public static class CommentDto {
+        private String writer;
+        @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy.MM.dd HH:mm", timezone = "Asia/Seoul")
+        private LocalDateTime date;
+        private String content;
+        private Boolean isWriter;
+    }
+}

src/main/java/com/ewhatever/qna/post/service/PostService.java

@@ -2,11 +2,18 @@
 
 import com.ewhatever.qna.answer.entity.Answer;
 import com.ewhatever.qna.answer.repository.AnswerRepository;
+import com.ewhatever.qna.comment.entity.Comment;
+import com.ewhatever.qna.comment.repository.CommentRepository;
 import com.ewhatever.qna.common.Base.BaseException;
 import com.ewhatever.qna.common.enums.Category;
+import com.ewhatever.qna.common.enums.Role;
+import com.ewhatever.qna.post.dto.GetPostRes;
 import com.ewhatever.qna.post.dto.GetPostsRes;
 import com.ewhatever.qna.post.entity.Post;
 import com.ewhatever.qna.post.repository.PostRepository;
+import com.ewhatever.qna.scrap.repository.ScrapRepository;
+import com.ewhatever.qna.user.entity.User;
+import com.ewhatever.qna.user.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -16,15 +23,20 @@
 import java.util.List;
 
 import static com.ewhatever.qna.common.Base.BaseResponseStatus.*;
+import static com.ewhatever.qna.common.Constant.Role.SENIOR;
+import static com.ewhatever.qna.common.Constant.Status.ACTIVE;
 
 @Service
 @RequiredArgsConstructor
 public class PostService {
     private final PostRepository postRepository;
     private final AnswerRepository answerRepository;
+    private final UserRepository userRepository;
+    private final ScrapRepository scrapRepository;
+    private final CommentRepository commentRepository;
 
     /**
-     * 주씨글 전체 목록 조회
+     * 쥬시글 전체 목록 조회
      */
     public Page<GetPostsRes> getPosts(Pageable page) throws BaseException {
         try {
@@ -54,7 +66,7 @@ private List<String> getCardList(Post post) {
     }
 
     /**
-     * 주씨글 카테고리 기반 목록 조회
+     * 쥬시글 카테고리 기반 목록 조회
      */
     public Page<GetPostsRes> getPostsByCategory(String category, Pageable page) throws BaseException {
         try {
@@ -78,4 +90,51 @@ public Page<GetPostsRes> getPostsByCategory(String category, Pageable page) thro
             throw new BaseException(DATABASE_ERROR);
         }
     }
+
+    /**
+     * 쥬시글 상세 조회
+     */
+    public GetPostRes getPost(Long postIdx, Long userIdx) throws BaseException {
+        try {
+            Post post = postRepository.findById(postIdx).orElseThrow(() -> new BaseException(INVALID_POST_IDX));
+            User user = userRepository.findByUserIdxAndStatusEquals(userIdx, ACTIVE);
+            return new GetPostRes(post.getCategory().toString(), getCardList(post), post.getLastModifiedDate(),
+                    post.getCommentCount(), post.getScrapCount(), isScrap(user, post), getCommentList(post, user));
+
+        } catch (BaseException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new BaseException(DATABASE_ERROR);
+        }
+    }
+
+    // 스크랩 여부
+    private Boolean isScrap(User user, Post post) {
+        return scrapRepository.existsByPostAndUserAndStatusEquals(post, user, ACTIVE);
+    }
+
+    // 댓글 list 조회
+    private List<GetPostRes.CommentDto> getCommentList(Post post, User user) {
+        List<GetPostRes.CommentDto> commentList = new ArrayList<>();
+        List<Comment> comments = commentRepository.findAllByPost(post);
+
+        for (Comment comment : comments) {
+            GetPostRes.CommentDto commentDto = new GetPostRes.CommentDto(getWriter(comment.getWriter().getRole()), comment.getCreatedDate(),
+                    comment.getContent(), isWriter(user, comment));
+            commentList.add(commentDto);
+        }
+        return commentList;
+    }
+
+    // 댓글 작성자 여부
+    private Boolean isWriter(User user, Comment comment) {
+        if (comment.getWriter().equals(user)) return true;
+        else return false;
+    }
+
+    // 댓글 작성자
+    private String getWriter(Role role) {
+        if (role.equals(SENIOR)) return "익명의 시니";
+        else return "익명의 쥬니";
+    }
 }

src/main/java/com/ewhatever/qna/question/service/QuestionService.java

@@ -10,7 +10,7 @@
 import org.springframework.stereotype.Service;
 
 import static com.ewhatever.qna.common.Base.BaseResponseStatus.*;
-import static com.ewhatever.qna.common.Constant.ACTIVE;
+import static com.ewhatever.qna.common.Constant.Status.ACTIVE;
 import static com.ewhatever.qna.common.enums.Role.SINY;
 
 @Service

src/main/java/com/ewhatever/qna/scrap/repository/ScrapRepository.java

@@ -1,11 +1,14 @@
 package com.ewhatever.qna.scrap.repository;
 
+import com.ewhatever.qna.post.entity.Post;
 import com.ewhatever.qna.scrap.entity.Scrap;
+import com.ewhatever.qna.user.entity.User;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface ScrapRepository extends JpaRepository<Scrap, Long> {
     Long countByUser_UserIdxAndStatusEquals(Long userIdx, String status);
     Page<Scrap> findByUser_UserIdxAndStatusEquals(Long userIdx, String status, Pageable pageable);
+    Boolean existsByPostAndUserAndStatusEquals(Post post, User user, String status);
 }