dev comment logic for check max users

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

@@ -326,6 +326,16 @@ public class FileUploadServiceImpl implements FileUploadService {
                         fileSimilarityService.hasDuplicatesByHash(finalFilePath ,session.getFileType());
 
                         File file = new File(finalFilePath);
+
+                        if (session.getFileType().startsWith("audio") && !isWavFile(file)) {
+                            session.setStatus(UploadStatus.FAILED);
+                            session.setLastError("wav file not have RIFF header");
+
+                            sessionRepository.save(session);
+
+                            throw new FileUploadException("Failed to upload chunk: .wav file not have RIFF header");
+                        }
+
                         FileProtector.Type type = "document".equals(session.getFileType()) ?
                                 FileProtector.Type.DOC : FileProtector.Type.valueOf(session.getFileType().toUpperCase());
 
@@ -403,6 +413,29 @@ public class FileUploadServiceImpl implements FileUploadService {
         }
     }
 
+    //TODO убрать когда научимся защищать другие типы
+    public boolean isWavFile(File file) {
+        if (file == null || !file.exists() || file.length() < 12) {
+            return false;
+        }
+
+        try (FileInputStream fis = new FileInputStream(file)) {
+            byte[] header = new byte[4];
+            int bytesRead = fis.read(header);
+
+            if (bytesRead < 4) {
+                return false;
+            }
+
+            return header[0] == 82 && header[1] == 73 &&
+                    header[2] == 70 && header[3] == 70;
+
+        } catch (IOException e) {
+            e.printStackTrace();
+            return false;
+        }
+    }
+
     private int protectCost(String fileType) {
         int cost = 0;