Merge pull request #155 from dnd-side-project/dev

feat(PlaylistController): 곡 상세 정보 조회용 API 추가

Author: gzhan0226

main-server/src/main/java/com/example/demo/domain/like/repository/LikesRepositoryCustomImpl.java

@@ -36,8 +36,7 @@ public List<Playlist> findLikedPlaylistsWithMeta(String userId,
                 .join(l).on(l.playlist.id.eq(p.id))
                 .join(p.users, u).fetchJoin()
                 .where(
-                        l.users.id.eq(userId),
-                        p.isPublic.isTrue()
+                        l.users.id.eq(userId)
                 )
                 .orderBy(order)
                 .limit(limit)

main-server/src/main/java/com/example/demo/domain/playlist/controller/PlaylistController.java

@@ -32,8 +32,28 @@ public class PlaylistController {
     private final PlaylistService playlistService;
 
     @Operation(
-            summary = "플레이리스트 상세 조회 + 재생 기록 저장",
-            description = "플레이리스트 상세를 조회하면서 동시에 재생 기록을 저장합니다."
+            summary = "플레이리스트 재생",
+            description = "플레이리스트 상세 정보를 조회하면서 동시에 재생 기록을 저장합니다."
+    )
+    @ApiResponse(
+            responseCode = "200",
+            description = "플레이리스트 상세 정보",
+            content = @Content(schema = @Schema(implementation = MainPlaylistDetailResponse.class))
+    )
+    @PostMapping("/{playlistId}/")
+    public ResponseEntity<MainPlaylistDetailResponse> playPlaylist(
+            @Parameter(description = "플레이리스트 ID", example = "101")
+            @PathVariable Long playlistId,
+            @Parameter(hidden = true)
+            @AuthenticationPrincipal CustomUserDetails user
+    ) {
+        MainPlaylistDetailResponse response = playlistService.playPlaylist(playlistId, user.getId());
+        return ResponseEntity.ok(response);
+    }
+
+    @Operation(
+            summary = "플레이리스트 상세 정보 조회",
+            description = "플레이리스트 상세 정보를 조회합니다"
     )
     @ApiResponse(
             responseCode = "200",

main-server/src/main/java/com/example/demo/domain/playlist/dto/playlistdto/PlaylistResponse.java

@@ -15,6 +15,9 @@ public record PlaylistResponse(
         @Schema(description = "플레이리스트 이름", example = "여름 드라이브 플레이리스트")
         String playlistName,
 
+        @Schema(description = "플레이리스트 제작자 이름", example = "여름 드라이브 플레이리스트")
+        String creatorNickname,
+
         @Schema(description = "플레이리스트 공개 여부", example = "true")
         boolean isPublic,
 
@@ -26,6 +29,7 @@ public static PlaylistResponse from(Playlist playlist, CdResponse cd) {
         return PlaylistResponse.builder()
                 .playlistId(playlist.getId())
                 .playlistName(playlist.getName())
+                .creatorNickname(playlist.getUsers().getUsername())
                 .isPublic(playlist.isPublic())
                 .cdResponse(cd)
                 .build();

main-server/src/main/java/com/example/demo/domain/playlist/repository/PlaylistRepository.java

@@ -11,18 +11,20 @@
 public interface PlaylistRepository extends JpaRepository<Playlist, Long>, PlaylistRepositoryCustom {
 
     @Query("""
-    SELECT p FROM Playlist p
-    WHERE p.users.id = :userId
-      AND p.isPublic = true
-    ORDER BY p.visitCount DESC
+SELECT p
+FROM Playlist p
+JOIN FETCH p.users u
+WHERE u.id = :userId
+ORDER BY p.visitCount DESC
 """)
     List<Playlist> findByUserIdPopular(@Param("userId") String userId);
 
     @Query("""
-    SELECT p FROM Playlist p
-    WHERE p.users.id = :userId
-      AND p.isPublic = true
-    ORDER BY p.id DESC
+SELECT p
+FROM Playlist p
+JOIN FETCH p.users u
+WHERE u.id = :userId
+ORDER BY p.id DESC
 """)
     List<Playlist> findByUserIdRecent(@Param("userId") String userId);
 

main-server/src/main/java/com/example/demo/domain/playlist/service/PlaylistService.java

@@ -9,6 +9,8 @@
 
 public interface PlaylistService {
 
+    MainPlaylistDetailResponse playPlaylist(Long playlistId, String userId);
+
     MainPlaylistDetailResponse getPlaylistDetail(Long playlistId, String userId);
 
     PlaylistWithSongsResponse saveFinalPlaylistWithSongsAndCd(String usersId, PlaylistCreateRequest request, List<CdItemRequest> cdItemRequestList);

main-server/src/main/java/com/example/demo/domain/playlist/service/PlaylistServiceImpl.java

@@ -41,7 +41,7 @@ public class PlaylistServiceImpl implements PlaylistService {
 
     @Override
     @Transactional
-    public MainPlaylistDetailResponse getPlaylistDetail(Long playlistId, String userId) {
+    public MainPlaylistDetailResponse playPlaylist(Long playlistId, String userId) {
         Playlist playlist = playlistRepository.findById(playlistId)
                 .filter(Playlist::isPublic)
                 .orElseThrow(() -> new PlaylistException("플레이리스트가 없거나 비공개 상태입니다.", PlaylistErrorCode.PLAYLIST_NOT_FOUND));
@@ -59,6 +59,23 @@ public MainPlaylistDetailResponse getPlaylistDetail(Long playlistId, String user
         return MainPlaylistDetailResponse.from(playlist, songDtos, cdResponse);
     }
 
+    @Override
+    @Transactional
+    public MainPlaylistDetailResponse getPlaylistDetail(Long playlistId, String userId) {
+        Playlist playlist = playlistRepository.findById(playlistId)
+                .filter(Playlist::isPublic)
+                .orElseThrow(() -> new PlaylistException("플레이리스트가 없거나 비공개 상태입니다.", PlaylistErrorCode.PLAYLIST_NOT_FOUND));
+
+        Users user = userRepository.findById(userId)
+                .orElseThrow(() -> new UserException(UserErrorCode.USER_NOT_FOUND));
+
+        List<Song> songs = songRepository.findSongsByPlaylistId(playlist.getId());
+        List<SongDto> songDtos = songs.stream().map(SongDto::from).toList();
+
+        var cdResponse = cdService.getOnlyCdByPlaylistId(playlistId);
+        return MainPlaylistDetailResponse.from(playlist, songDtos, cdResponse);
+    }
+
     @Override
     @Transactional
     public PlaylistWithSongsResponse saveFinalPlaylistWithSongsAndCd(String usersId, PlaylistCreateRequest request,