인기순 게시글 조회 API 구현

src/main/java/balancetalk/game/application/GameService.java

@@ -187,12 +187,21 @@ public List<GameSetResponse> findLatestGames(final String tagName, final Pageabl
     }
 
     @Transactional(readOnly = true)
-    public List<GameSetResponse> findBestGames(final String tagName, final Pageable pageable,
+    public List<GameSetResponse> findPopularGamesWithTag(final String tagName, final Pageable pageable,
                                                final GuestOrApiMember guestOrApiMember) {
         List<GameSet> gameSets = gameSetRepository.findGamesByViews(tagName, pageable);
         return gameSetResponses(guestOrApiMember, gameSets);
     }
 
+    @Transactional(readOnly = true)
+    public List<GameSetResponse> findPopularGamesWithoutTag(
+            final Pageable pageable,
+            final GuestOrApiMember guestOrApiMember
+    ) {
+        List<GameSet> popularGames = gameSetRepository.findPopularGames(pageable);
+        return gameSetResponses(guestOrApiMember, popularGames);
+    }
+
     private List<GameSetResponse> gameSetResponses(GuestOrApiMember guestOrApiMember, List<GameSet> gameSets) {
         if (guestOrApiMember.isGuest()) {
             return gameSets.stream()

src/main/java/balancetalk/game/domain/repository/GameSetRepository.java

@@ -21,4 +21,9 @@ public interface GameSetRepository extends JpaRepository<GameSet, Long> {
             "WHERE g.mainTag.name = :name " +
             "ORDER BY g.views DESC, g.createdAt DESC")
     List<GameSet> findGamesByViews(@Param("name") String mainTag, Pageable pageable);
+
+    @Query("SELECT g FROM GameSet g "
+            + "ORDER BY g.views DESC, " 
+            + "g.createdAt DESC")
+    List<GameSet> findPopularGames(Pageable pageable);
 }

src/main/java/balancetalk/game/presentation/GameController.java

@@ -69,15 +69,19 @@ public List<GameSetResponse> findLatestGames(
         return gameService.findLatestGames(tagName, pageable, guestOrApiMember);
     }
 
-    @GetMapping("/best")
-    @Operation(summary = "조회수 순으로 밸런스 게임 조회", description = "조회수 순으로 정렬된 16개의 게임 목록을 리턴합니다.")
-    public List<GameSetResponse> findBestGames(
-            @RequestParam String tagName,
+    @GetMapping("/popular")
+    @Operation(summary = "인기순으로 밸런스 게임 조회",
+            description = "메인 태그가 주어지면 해당 태그의 게임을 인기순으로 조회, 없으면 밸런스 게임 전체를 인기순으로 조회합니다.")
+    public List<GameSetResponse> findPopularGamesWithTag(
+            @RequestParam(required = false) String tagName,
             @RequestParam(defaultValue = "0") int page,
             @RequestParam(defaultValue = "16") int size,
             @Parameter(hidden = true) @AuthPrincipal final GuestOrApiMember guestOrApiMember
     ) {
         Pageable pageable = PageRequest.of(page, size);
-        return gameService.findBestGames(tagName, pageable, guestOrApiMember);
+        if (tagName != null) {
+            return gameService.findPopularGamesWithTag(tagName, pageable, guestOrApiMember);
+        }
+        return gameService.findPopularGamesWithoutTag(pageable, guestOrApiMember);
     }
 }