fix saved collection cover media logic

https://t.me/barinsta_app/22792

app/src/main/java/awais/instagrabber/adapters/viewholder/TopicClusterViewHolder.java

@@ -29,6 +29,7 @@ import awais.instagrabber.adapters.SavedCollectionsAdapter;
 import awais.instagrabber.databinding.ItemDiscoverTopicBinding;
 import awais.instagrabber.repositories.responses.discover.TopicCluster;
 import awais.instagrabber.repositories.responses.saved.SavedCollection;
+import awais.instagrabber.repositories.responses.Media;
 import awais.instagrabber.utils.ResponseBodyUtils;
 
 public class TopicClusterViewHolder extends RecyclerView.ViewHolder {
@@ -130,7 +131,10 @@ public class TopicClusterViewHolder extends RecyclerView.ViewHolder {
         }
         // binding.title.setTransitionName("title-" + topicCluster.getCollectionId());
         binding.cover.setTransitionName("cover-" + topicCluster.getCollectionId());
-        final String thumbUrl = ResponseBodyUtils.getThumbUrl(topicCluster.getCoverMediaList().get(0));
+        final Media coverMedia = topicCluster.getCoverMediaList() == null
+                ? topicCluster.getCoverMedia()
+                : topicCluster.getCoverMediaList().get(0);
+        final String thumbUrl = ResponseBodyUtils.getThumbUrl(coverMedia);
         if (thumbUrl == null) {
             binding.cover.setImageURI((String) null);
         } else {

app/src/main/java/awais/instagrabber/fragments/CollectionPostsFragment.java

@@ -415,7 +415,10 @@ public class CollectionPostsFragment extends Fragment implements SwipeRefreshLay
     }
 
     private void setupCover() {
-        final String coverUrl = ResponseBodyUtils.getImageUrl(savedCollection.getCoverMediaList().get(0));
+        final Media coverMedia = savedCollection.getCoverMediaList() == null
+                ? savedCollection.getCoverMedia()
+                : savedCollection.getCoverMediaList().get(0);
+        final String coverUrl = ResponseBodyUtils.getImageUrl(coverMedia);
         final DraweeController controller = Fresco
                 .newDraweeControllerBuilder()
                 .setOldController(binding.cover.getController())

app/src/main/java/awais/instagrabber/repositories/responses/saved/SavedCollection.kt

@@ -8,5 +8,5 @@ class SavedCollection(val collectionId: String,
                       val collectionType: String,
                       val collectionMediaCount: Int,
                       // coverMedia or coverMediaList: only one is defined
-                      val coverMedia: Media,
-                      val coverMediaList: List<Media>) : Serializable
+                      val coverMedia: Media?,
+                      val coverMediaList: List<Media>?) : Serializable