Feature/#61 게시글 정보 조회 관련 API 보강

src/main/java/com/offer/post/application/PostService.java

@@ -63,7 +63,7 @@ public PostSummaries getPosts(PostReadParams params, LoginMember loginMember) {
     @Transactional(readOnly = true)
     public PostDetail getPost(Long postId) {
         Post post = postRepository.getById(postId);
-        return PostDetail.from(post);
+        return PostDetail.from(post, categoryRepository.findByName(post.getCategory()));
     }
 
     @Transactional(readOnly = true)
@@ -106,7 +106,7 @@ public PostDetail updatePost(Long postId, PostUpdateRequest request, Long member
                     .getId());
         }
         post.update(request);
-        return PostDetail.from(post);
+        return PostDetail.from(post, categoryRepository.findByName(post.getCategory()));
     }
 
     @Transactional

src/main/java/com/offer/post/application/response/PostDetail.java

@@ -4,8 +4,11 @@
 import com.offer.post.domain.ProductCondition;
 import com.offer.post.domain.TradeStatus;
 import com.offer.post.domain.TradeType;
+
 import java.time.LocalDateTime;
 import java.util.List;
+
+import com.offer.post.domain.category.Category;
 import lombok.Builder;
 import lombok.Getter;
 import org.springframework.format.annotation.DateTimeFormat;
@@ -25,10 +28,13 @@ public class PostDetail {
     private ProductCondition productCondition;
     @DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss")
     private LocalDateTime createdAt;
+    private SellerDetail seller;
+    private CategoryResponse category;
 
     @Builder
     public PostDetail(Long id, String title, String description, String thumbnailImageUrl, List<String> imageUrls, int price,
-        String location, TradeType tradeType, TradeStatus tradeStatus, ProductCondition productCondition, LocalDateTime createdAt) {
+                      String location, TradeType tradeType, TradeStatus tradeStatus, ProductCondition productCondition, LocalDateTime createdAt,
+                      SellerDetail seller, CategoryResponse category) {
         this.id = id;
         this.title = title;
         this.description = description;
@@ -40,21 +46,25 @@ public PostDetail(Long id, String title, String description, String thumbnailIma
         this.tradeStatus = tradeStatus;
         this.productCondition = productCondition;
         this.createdAt = createdAt;
+        this.seller = seller;
+        this.category = category;
     }
 
-    public static PostDetail from(Post post) {
+    public static PostDetail from(Post post, Category category) {
         return PostDetail.builder()
-            .id(post.getId())
-            .title(post.getTitle())
-            .description(post.getDescription())
-            .thumbnailImageUrl(post.getThumbnailImageUrl())
-            .imageUrls(post.getImageUrls())
-            .tradeStatus(post.getTradeStatus())
-            .price(post.getPrice())
-            .location(post.getLocation())
-            .tradeType(post.getTradeType())
-            .productCondition(post.getProductCondition())
-            .createdAt(post.getCreatedAt())
-            .build();
+                .id(post.getId())
+                .title(post.getTitle())
+                .description(post.getDescription())
+                .thumbnailImageUrl(post.getThumbnailImageUrl())
+                .imageUrls(post.getImageUrls())
+                .tradeStatus(post.getTradeStatus())
+                .price(post.getPrice())
+                .location(post.getLocation())
+                .tradeType(post.getTradeType())
+                .productCondition(post.getProductCondition())
+                .createdAt(post.getCreatedAt())
+                .seller(SellerDetail.from(post.getSeller()))
+                .category(CategoryResponse.from(category))
+                .build();
     }
 }

src/main/java/com/offer/post/application/response/PostSummary.java

@@ -2,8 +2,10 @@
 
 import com.offer.post.domain.Post;
 import com.offer.post.domain.TradeStatus;
+
 import java.time.LocalDateTime;
 import java.util.Set;
+
 import lombok.Builder;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -23,10 +25,13 @@ public class PostSummary {
     private int likeCount;
     @DateTimeFormat(pattern = "yyyy-MM-dd'T'HH:mm:ss")
     private LocalDateTime createdAt;
+    private SellerDetail seller;
+    private CategoryResponse category;
 
     @Builder(toBuilder = true)
     public PostSummary(Long id, String title, int price, String location, String thumbnailImageUrl,
-        boolean liked, TradeStatus tradeStatus, int likeCount, LocalDateTime createdAt) {
+                       boolean liked, TradeStatus tradeStatus, int likeCount, LocalDateTime createdAt,
+                       SellerDetail seller, CategoryResponse category) {
         this.id = id;
         this.title = title;
         this.price = price;
@@ -36,6 +41,8 @@ public PostSummary(Long id, String title, int price, String location, String thu
         this.tradeStatus = tradeStatus;
         this.likeCount = likeCount;
         this.createdAt = createdAt;
+        this.seller = seller;
+        this.category = category;
     }
 
     public static PostSummary from(Post post, Set<Long> likePostIds, int likeCount) {
@@ -45,16 +52,16 @@ public static PostSummary from(Post post, Set<Long> likePostIds, int likeCount)
         }
 
         return PostSummary.builder()
-            .id(post.getId())
-            .title(post.getTitle())
-            .price(post.getPrice())
-            .location(post.getLocation())
-            .thumbnailImageUrl(post.getThumbnailImageUrl())
-            .liked(liked)  // TODO: 2023/09/24 NOT IMPLEMENTED
-            .tradeStatus(post.getTradeStatus())
-            .likeCount(likeCount)
-            .createdAt(post.getCreatedAt())
-            .build();
+                .id(post.getId())
+                .title(post.getTitle())
+                .price(post.getPrice())
+                .location(post.getLocation())
+                .thumbnailImageUrl(post.getThumbnailImageUrl())
+                .liked(liked)  // TODO: 2023/09/24 NOT IMPLEMENTED
+                .tradeStatus(post.getTradeStatus())
+                .likeCount(likeCount)
+                .createdAt(post.getCreatedAt())
+                .build();
     }
 
     public static PostSummary from(Post post, boolean isLiked) {
@@ -67,6 +74,7 @@ public static PostSummary from(Post post, boolean isLiked) {
                 .liked(isLiked)
                 .tradeStatus(post.getTradeStatus())
                 .createdAt(post.getCreatedAt())
+                .seller(SellerDetail.from(post.getSeller()))
                 .build();
     }
 }

src/main/java/com/offer/post/application/response/SellerDetail.java

@@ -0,0 +1,30 @@
+package com.offer.post.application.response;
+
+import com.offer.member.Member;
+import lombok.Builder;
+import lombok.Getter;
+
+@Getter
+public class SellerDetail {
+    private Long id;
+    private String profileImageUrl;
+    private String nickname;
+    private int offerLevel;
+
+    @Builder
+    public SellerDetail(Long id, String profileImageUrl, String nickname, int offerLevel) {
+        this.id = id;
+        this.profileImageUrl = profileImageUrl;
+        this.nickname = nickname;
+        this.offerLevel = offerLevel;
+    }
+
+    public static SellerDetail from(Member seller) {
+        return SellerDetail.builder()
+                .id(seller.getId())
+                .profileImageUrl(seller.getProfileImageUrl())
+                .nickname(seller.getNickname())
+                .offerLevel(seller.getOfferLevel())
+                .build();
+    }
+}