refactor: 코드리뷰 수정

Author: ys0221

src/main/java/com/back/web7_9_codecrete_be/domain/artists/entity/ArtistLike.java

@@ -4,19 +4,24 @@
 import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
+import org.springframework.data.annotation.CreatedDate;
+import org.springframework.data.jpa.domain.support.AuditingEntityListener;
 
 import java.time.LocalDateTime;
 
+
 @Entity
 @Getter
 @NoArgsConstructor
+@EntityListeners(AuditingEntityListener.class)
 @Table(name = "artist_like")
 public class ArtistLike {
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     @Column(name = "artist_like_id")
     private long id;
 
+    @CreatedDate
     @Column(name = "created_date", nullable = false)
     private LocalDateTime createdDate;
 
@@ -29,7 +34,6 @@ public class ArtistLike {
     private Artist artist;
 
     public ArtistLike(Artist artist, User user) {
-        this.createdDate = LocalDateTime.now();
         this.artist = artist;
         this.user = user;
     }

src/main/java/com/back/web7_9_codecrete_be/domain/artists/service/ArtistService.java

@@ -29,7 +29,12 @@ public class ArtistService {
     private final ArtistRepository artistRepository;
     private final GenreService genreService;
     private final ArtistLikeRepository artistLikeRepository;
-    private final Rq rq;
+
+    @Transactional(readOnly = true)
+    public Artist findArtist(Long artistId) {
+        return artistRepository.findById(artistId)
+                .orElseThrow(() -> new BusinessException(ArtistErrorCode.ARTIST_NOT_FOUND));
+    }
 
     @Transactional
     public int setArtist() {
@@ -131,9 +136,7 @@ public List<SearchResponse> search(String artistName) {
 
     @Transactional
     public void likeArtist(Long artistId, User user) {
-        Artist artist = artistRepository.findById(artistId)
-                .orElseThrow(() -> new BusinessException(ArtistErrorCode.ARTIST_NOT_FOUND));
-
+        Artist artist = findArtist(artistId);
         if(artistLikeRepository.existsByArtistAndUser(artist, user)) {
             throw new BusinessException(ArtistErrorCode.LIKES_ALREADY_EXISTS);
         }
@@ -143,8 +146,7 @@ public void likeArtist(Long artistId, User user) {
 
     @Transactional
     public void deleteLikeArtist(Long artistId, User user) {
-        Artist artist = artistRepository.findById(artistId)
-                .orElseThrow(() -> new BusinessException(ArtistErrorCode.ARTIST_NOT_FOUND));
+        Artist artist = findArtist(artistId);
         ArtistLike likes = artistLikeRepository.findByArtistAndUser(artist, user)
                 .orElseThrow(() -> new BusinessException(ArtistErrorCode.LIKES_NOT_FOUND));
         artistLikeRepository.delete(likes);