feat: 리액션 API 추가 및 추천리스트 API, 리스트 상세조회 API 재구현

src/main/java/com/listywave/common/auth/AuthorizationInterceptor.java

@@ -21,7 +21,7 @@
 public class AuthorizationInterceptor implements HandlerInterceptor {
 
     private static final UriAndMethod[] whiteList = {
-            new UriAndMethod("/lists/explore", GET),
+            new UriAndMethod("/lists/recommended", GET),
             new UriAndMethod("/lists/search", GET),
             new UriAndMethod("/lists/{listId}/comments", GET),
             new UriAndMethod("/lists/upload-url", GET),

src/main/java/com/listywave/list/application/domain/list/ListEntity.java

@@ -266,4 +266,8 @@ public void validateUpdateAuthority(User loginUser, Collaborators beforeCollabor
     public void increaseUpdateCount(){
         this.updateCount++;
     }
+
+    public boolean isOwner(User loginUser) {
+        return this.user.equals(loginUser);
+    }
 }

src/main/java/com/listywave/list/application/domain/reaction/Reaction.java

@@ -0,0 +1,16 @@
+package com.listywave.list.application.domain.reaction;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+@Getter
+@AllArgsConstructor
+public enum Reaction {
+
+    COOL("멋져요"),
+    AGREE("공감해요"),
+    THANKS("감사해요")
+    ;
+
+    private final String name;
+}

src/main/java/com/listywave/list/application/domain/reaction/ReactionStats.java

@@ -0,0 +1,38 @@
+package com.listywave.list.application.domain.reaction;
+
+import com.listywave.common.BaseEntity;
+import com.listywave.list.application.domain.list.ListEntity;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import static jakarta.persistence.FetchType.LAZY;
+import static lombok.AccessLevel.PROTECTED;
+
+@Getter
+@Entity
+@Builder
+@AllArgsConstructor
+@Table(name = "reaction_stats")
+@NoArgsConstructor(access = PROTECTED)
+@EntityListeners(AuditingEntityListener.class)
+public class ReactionStats extends BaseEntity {
+
+    @ManyToOne(fetch = LAZY)
+    @JoinColumn(name = "list_id", nullable = false)
+    private ListEntity list;
+
+    @Column(nullable = false)
+    @Enumerated(EnumType.STRING)
+    private Reaction reaction;
+
+    @Column(nullable = false)
+    private int count;
+
+    public void updateCount(int changeCount) {
+        this.count += changeCount;
+    }
+}

src/main/java/com/listywave/list/application/domain/reaction/UserReaction.java

@@ -0,0 +1,61 @@
+package com.listywave.list.application.domain.reaction;
+
+import com.listywave.list.application.domain.list.ListEntity;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
+
+import java.time.LocalDateTime;
+
+import static jakarta.persistence.FetchType.LAZY;
+import static jakarta.persistence.TemporalType.TIMESTAMP;
+import static lombok.AccessLevel.PROTECTED;
+
+@Getter
+@Entity
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor(access = PROTECTED)
+@EntityListeners(AuditingEntityListener.class)
+@Table(name = "user_reaction",
+        uniqueConstraints= {
+                @UniqueConstraint(
+                        name = "UniqueIdAndUserIdAndReaction",
+                        columnNames = {"id", "user_id", "reaction"}
+                )
+        }
+)
+public class UserReaction {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(name = "user_id", nullable = false)
+    private Long userId;
+
+    @ManyToOne(fetch = LAZY)
+    @JoinColumn(name = "list_id", nullable = false)
+    private ListEntity list;
+
+    @Column(nullable = false)
+    @Enumerated(EnumType.STRING)
+    private Reaction reaction;
+
+    @CreatedDate
+    @Temporal(TIMESTAMP)
+    @Column(updatable = false)
+    private LocalDateTime createdDate;
+
+    public static UserReaction create(Long userId, ListEntity list, Reaction reaction) {
+        return UserReaction.builder()
+                .userId(userId)
+                .list(list)
+                .reaction(reaction)
+                .build();
+    }
+}

src/main/java/com/listywave/list/application/dto/response/ListDetailResponse.java

@@ -27,15 +27,19 @@ public record ListDetailResponse(
         boolean isPublic,
         String backgroundPalette,
         String backgroundColor,
-        int collectCount,
-        int viewCount
+        Integer collectCount,
+        int viewCount,
+        int updateCount,
+        List<ReactionResponse> reactions
 ) {
 
     public static ListDetailResponse of(
             ListEntity list,
             User owner,
+            boolean isOwner,
             boolean isCollected,
-            List<Collaborator> collaborators
+            List<Collaborator> collaborators,
+            List<ReactionResponse> reactions
     ) {
         return ListDetailResponse.builder()
                 .categoryEngName(list.getCategory().name().toLowerCase())
@@ -54,8 +58,10 @@ public static ListDetailResponse of(
                 .isPublic(list.isPublic())
                 .backgroundColor(list.getBackgroundColor().name())
                 .backgroundPalette(list.getBackgroundPalette().name())
-                .collectCount(list.getCollectCount())
+                .collectCount(isOwner ? list.getCollectCount() : null)
                 .viewCount(list.getViewCount())
+                .updateCount(list.getUpdateCount())
+                .reactions(reactions)
                 .build();
     }
 

src/main/java/com/listywave/list/application/dto/response/ListRecentResponse.java

@@ -3,7 +3,6 @@
 import com.listywave.list.application.domain.item.Item;
 import com.listywave.list.application.domain.list.ListEntity;
 import java.time.LocalDateTime;
-import java.util.Comparator;
 import java.util.List;
 import lombok.Builder;
 

src/main/java/com/listywave/list/application/dto/response/ReactionResponse.java

@@ -0,0 +1,19 @@
+package com.listywave.list.application.dto.response;
+
+import lombok.Builder;
+
+@Builder
+public record ReactionResponse(
+        String reaction,
+        Integer count,
+        boolean isReacted
+) {
+
+    public static ReactionResponse of(String name, Integer count, boolean isReacted) {
+        return ReactionResponse.builder()
+                .reaction(name)
+                .count(count)
+                .isReacted(isReacted)
+                .build();
+    }
+}

src/main/java/com/listywave/list/application/dto/response/RecommendedListResponse.java

@@ -0,0 +1,54 @@
+package com.listywave.list.application.dto.response;
+
+import com.listywave.list.application.domain.item.Item;
+import com.listywave.list.application.domain.list.ListEntity;
+import lombok.Builder;
+
+import java.util.List;
+
+@Builder
+public record RecommendedListResponse(
+        Long id,
+        Long ownerId,
+        String ownerNickname,
+        String title,
+        String itemImageUrl,
+        String category,
+        String backgroundColor,
+        List<Top3ItemResponse> items
+) {
+    public static RecommendedListResponse of(ListEntity list) {
+        return RecommendedListResponse.builder()
+                .id(list.getId())
+                .ownerId(list.getUser().getId())
+                .ownerNickname(list.getUser().getNickname())
+                .title(list.getTitle().getValue())
+                .itemImageUrl(list.getRepresentImageUrl())
+                .category(list.getCategory().getViewName())
+                .backgroundColor(list.getBackgroundColor().name())
+                .items(Top3ItemResponse.toList(list.getTop3Items().getValues()))
+                .build();
+    }
+
+    @Builder
+    public record Top3ItemResponse(
+            Long id,
+            int rank,
+            String title
+    ) {
+
+        public static List<Top3ItemResponse> toList(List<Item> items) {
+            return items.stream()
+                    .map(Top3ItemResponse::of)
+                    .toList();
+        }
+
+        public static Top3ItemResponse of(Item item) {
+            return Top3ItemResponse.builder()
+                    .id(item.getId())
+                    .rank(item.getRanking())
+                    .title(item.getTitle().getValue())
+                    .build();
+        }
+    }
+}