feat: #44 플레이리스트 업데이트

Team-PLAT · Sep 26, 2024 · a5f7aef · a5f7aef
1 parent 9b959b1
commit a5f7aef
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Showing 3 changed files with 47 additions and 1 deletion.
diff --git a/src/main/java/com/cabin/plat/domain/playlist/entity/PlaylistTrack.java b/src/main/java/com/cabin/plat/domain/playlist/entity/PlaylistTrack.java
@@ -26,6 +26,7 @@ public class PlaylistTrack extends BaseEntity {
     @JoinColumn(name = "track_id", nullable = false)
     private Track track;
 
+    @Setter
     @Column(name = "order_index", nullable = false)
     private int orderIndex;
 }
diff --git a/src/main/java/com/cabin/plat/domain/playlist/service/PlaylistServiceImpl.java b/src/main/java/com/cabin/plat/domain/playlist/service/PlaylistServiceImpl.java
@@ -4,6 +4,7 @@
 import com.cabin.plat.domain.member.repository.MemberRepository;
 import com.cabin.plat.domain.playlist.dto.PlaylistRequest;
 import com.cabin.plat.domain.playlist.dto.PlaylistRequest.PlaylistOrders;
+import com.cabin.plat.domain.playlist.dto.PlaylistRequest.TrackOrder;
 import com.cabin.plat.domain.playlist.dto.PlaylistResponse;
 import com.cabin.plat.domain.playlist.dto.PlaylistResponse.PlayListId;
 import com.cabin.plat.domain.playlist.entity.Playlist;
@@ -146,16 +147,57 @@ public PlaylistResponse.PlayListId addTrackToPlaylist(Member member, Long playli
         return playlistMapper.toPlaylistId(playlistId);
     }
 
+    @Transactional
     @Override
     public PlayListId updateTrackOrders(Member member, Long playlistId, PlaylistOrders playlistOrders) {
-        return null;
+        Playlist playlist = findPlaylistByIdWithValidation(playlistId, member);
+
+        // 기존 플레이리스트의 모든 트랙
+        List<PlaylistTrack> playlistTracks = playlistTrackRepository.findAllByPlaylistIs(playlist);
+
+        // 플레이리스트의 업데이트할 트랙 순서 정보
+        Map<Long, Integer> trackOrderMap = playlistOrders.getTracks().stream()
+                .collect(Collectors.toMap(TrackOrder::getTrackId, TrackOrder::getOrderIndex));
+
+        validateTrackOrderCount(playlistOrders, playlistTracks);
+        validateTrackIds(playlistOrders, playlistTracks);
+
+        for (PlaylistTrack playlistTrack: playlistTracks) {
+            Long trackId = playlistTrack.getTrack().getId();
+            int newOrder = trackOrderMap.get(trackId);
+            playlistTrack.setOrderIndex(newOrder);
+        }
+
+//        playlistTrackRepository.saveAll(playlistTracks);
+        return playlistMapper.toPlaylistId(playlistId);
     }
 
+    @Transactional
     @Override
     public PlayListId deleteTrackFromPlaylist(Member member, Long playlistId, Long trackId) {
         return null;
     }
 
+    private void validateTrackOrderCount(PlaylistOrders playlistOrders, List<PlaylistTrack> playlistTracks) {
+        if (playlistOrders.getTracks().size() != playlistTracks.size()) {
+            throw new RestApiException(PlaylistErrorCode.PLAYLIST_TRACK_COUNT_MISMATCH);
+        }
+    }
+
+    private void validateTrackIds(PlaylistOrders playlistOrders, List<PlaylistTrack> playlistTracks) {
+        Set<Long> playlistTrackIds = playlistTracks.stream()
+                .map(playlistTrack -> playlistTrack.getTrack().getId())
+                .collect(Collectors.toSet());
+
+        Set<Long> orderTrackIds = playlistOrders.getTracks().stream()
+                .map(TrackOrder::getTrackId)
+                .collect(Collectors.toSet());
+
+        if (!playlistTrackIds.equals(orderTrackIds)) {
+            throw new RestApiException(PlaylistErrorCode.PLAYLIST_TRACK_ID_MISMATCH);
+        }
+    }
+
     private Track findTrackById(Long trackId) {
         return trackRepository.findById(trackId)
                 .orElseThrow(() -> new RestApiException(TrackErrorCode.TRACK_NOT_FOUND));

diff --git a/src/main/java/com/cabin/plat/global/exception/errorCode/PlaylistErrorCode.java b/src/main/java/com/cabin/plat/global/exception/errorCode/PlaylistErrorCode.java
@@ -13,6 +13,9 @@ public enum PlaylistErrorCode implements ErrorCodeInterface{
     PLAYLIST_TRACK_NOT_FOUND("PLAYLIST004", "플레이리스트에 해당 트랙이 존재하지 않습니다.", HttpStatus.NOT_FOUND),
     PLAYLIST_TRACK_DELETE_FORBIDDEN("PLAYLIST005", "이 플레이리스트의 트랙을 삭제할 권한이 없습니다.", HttpStatus.FORBIDDEN),
     PLAYLIST_TRACK_DUPLICATE("PLAYLIST006", "이미 추가된 트랙입니다.", HttpStatus.BAD_REQUEST),
+    PLAYLIST_TRACK_COUNT_MISMATCH("PLAYLIST007", "요청한 트랙 순서 정보의 개수와 플레이리스트에 존재하는 트랙 개수가 일치하지 않습니다.", HttpStatus.BAD_REQUEST),
+    TRACK_NOT_FOUND("PLAYLIST008", "플레이리스트 안에 Track이 존재하지 않습니다.", HttpStatus.NOT_FOUND),
+    PLAYLIST_TRACK_ID_MISMATCH("PLAYLIST009", "플레이리스트에 존재하는 트랙 ID 들과 요청한 트랙 ID 들이 일치하지 않습니다.", HttpStatus.BAD_REQUEST),
     ;
 
     private final String code;