dev conver files

src/main/java/ru/soune/nocopy/service/file/impl/AudioLocalSearchImpl.java

@@ -28,7 +28,7 @@ public class AudioLocalSearchImpl implements AudioLocalSearch {
 
         if (fileEntity == null) return null;
 
-        return fileUtil.createFileInfo(fileEntity, null);
+        return fileUtil.createFileInfo(fileEntity, fileEntity.getFileExtension());
     }
 
     @Override

src/main/java/ru/soune/nocopy/service/file/impl/DocumentLocalSearchImpl.java

@@ -23,7 +23,7 @@ public class DocumentLocalSearchImpl implements DocumentLocalSearch {
     @Override
     public @Nullable FileProtector.FileInfo findByIds(@NotNull String ownerId, @NotNull String fileId) {
         FileEntity fileEntity = fileEntityRepository.findByIdAndUserId(fileId, Long.valueOf(ownerId));
-        FileProtector.FileInfo fileInfo = fileUtil.createFileInfo(fileEntity, null);
+        FileProtector.FileInfo fileInfo = fileUtil.createFileInfo(fileEntity, fileEntity.getFileExtension());
         log.info("fileInfo: {}", fileInfo);
 
         return fileInfo;