feat : 홈화면 로직 수정

src/main/java/learningFlow/learningFlow_BE/converter/ResourceConverter.java

@@ -74,7 +74,9 @@ public static ResourceResponseDTO.changeEpisodeIsCompleteDTO toChangeEpisodeIsCo
                 .build();
     }
 
-    public static ResourceResponseDTO.SearchResultResourceDTO convertToResourceDTO(CollectionEpisode episode) {
+    public static ResourceResponseDTO.SearchResultResourceDTO convertToResourceDTO(
+            CollectionEpisode episode
+    ) {
         return ResourceResponseDTO.SearchResultResourceDTO.builder()
                 .episodeId(episode.getId())
                 .episodeName(episode.getEpisodeName())
@@ -101,6 +103,22 @@ public static ResourceResponseDTO.RecentlyWatchedEpisodeDTO convertToRecentlyWat
                 .build();
     }
 
+    public static List<ResourceResponseDTO.SearchResultResourceDTO> convertToResourceDTOWithToday(
+            List<CollectionEpisode> episodes,
+            int nextEpisodeNumber
+    ) {
+        return episodes.stream()
+                .map(episode -> ResourceResponseDTO.SearchResultResourceDTO.builder()
+                            .episodeId(episode.getId())
+                            .episodeName(episode.getEpisodeName())
+                            .url(episode.getResource().getUrl())
+                            .resourceSource(extractResourceSource(episode.getResource().getUrl()))
+                            .episodeNumber(episode.getEpisodeNumber())
+                            .today(episode.getEpisodeNumber().equals(nextEpisodeNumber))
+                            .build())
+                .toList();
+    }
+
     private static String extractResourceSource(String url) {
 
         String lowerCaseUrl = url.toLowerCase();

src/main/java/learningFlow/learningFlow_BE/service/collection/CollectionService.java

@@ -277,13 +277,48 @@ public HomeResponseDTO.UserHomeInfoDTO getUserHomeCollections(User user) {
     }
 
     private CollectionResponseDTO.CollectionPreviewDTO getRecentLearning(User user) {
+
         return userCollectionRepository
                 .findFirstByUserAndStatusOrderByUpdatedAtDesc(user, UserCollectionStatus.IN_PROGRESS)
-                .map(userCollection -> CollectionConverter.toCollectionPreviewDTO(
-                        userCollection.getCollection(),
-                        getLearningInfo(userCollection.getCollection(), user, false),
-                        user
-                ))
+                .map(userCollection -> {
+                    Collection collection = userCollection.getCollection();
+
+                    List<CollectionEpisode> episodes = collection.getEpisodes();
+                    int totalEpisodes = episodes.size();
+                    int currentEpisode = userCollection.getUserCollectionStatus();
+                    int nextEpisode = currentEpisode + 1;
+
+                    List<CollectionEpisode> selectedEpisodes = new ArrayList<>();
+                    if (totalEpisodes <= 4) {
+                        // 4회차 이하의 컬렉션은 전체 표시
+                        selectedEpisodes.addAll(episodes);
+                    } else {
+                        // 5회차 이상의 컬렉션
+                        // today 에피소드(다음 에피소드)가 가능한 2번째에 오도록 계산
+                        int idealStart = nextEpisode - 2; // today가 2번째에 오기 위한 이상적인 시작 인덱스
+
+                        // 실제 시작 인덱스 계산 (0 이상, totalEpisodes-4 이하)
+                        int startIdx = Math.max(0, Math.min(idealStart, totalEpisodes - 4));
+
+                        // 4개의 에피소드 선택
+                        for (int i = 0; i < 4; i++) {
+                            selectedEpisodes.add(episodes.get(startIdx + i));
+                        }
+                    }
+
+                    CollectionResponseDTO.CollectionLearningInfo learningInfo = CollectionResponseDTO.CollectionLearningInfo.builder()
+                            .learningStatus("IN_PROGRESS")
+                            .progressRate(calculateProgressRate(userCollection))
+                            .startDate(userCollection.getCreatedAt().toLocalDate())
+                            .currentEpisode(currentEpisode)
+                            .resourceDTOList(ResourceConverter.convertToResourceDTOWithToday(
+                                    selectedEpisodes,
+                                    nextEpisode
+                            ))
+                            .build();
+
+                    return CollectionConverter.toCollectionPreviewDTO(collection, learningInfo, user);
+                })
                 .orElse(null);
     }
 

src/main/java/learningFlow/learningFlow_BE/web/dto/resource/ResourceResponseDTO.java

@@ -64,6 +64,7 @@ public static class SearchResultResourceDTO {
         String url;
         String resourceSource;
         Integer episodeNumber;
+        Boolean today;
     }
 
     @Getter