NCBACK-25 add protection for audio and use hash method from library

src/main/java/ru/soune/nocopy/service/file/FileEntityService.java

@@ -9,6 +9,7 @@ import ru.soune.nocopy.dto.file.FileResponse;
 import ru.soune.nocopy.entity.file.FileEntity;
 import ru.soune.nocopy.entity.file.FileStatus;
 import ru.soune.nocopy.entity.file.FileUploadSession;
+import ru.soune.nocopy.entity.file.ProtectionStatus;
 import ru.soune.nocopy.exception.DuplicateImageException;
 import ru.soune.nocopy.exception.FileEntityNotFoundException;
 import ru.soune.nocopy.repository.FileEntityRepository;
@@ -16,6 +17,7 @@ import ru.soune.nocopy.repository.SimilarImageProjection;
 import ru.soune.nocopy.service.FileSimilarityService;
 import ru.soune.nocopy.service.ImageHashService;
 
+import java.io.File;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -110,6 +112,39 @@ public class FileEntityService {
         return convertToResponse(fileEntity, version);
     }
 
+    @Transactional(readOnly = true)
+    public FileEntityResponse getByFilePath(String filePath, int version) {
+        FileEntity fileEntity = fileEntityRepository.findByFilePath(filePath)
+                .orElseThrow(() -> new FileEntityNotFoundException("Path: " + filePath));
+
+        return convertToResponse(fileEntity, version);
+    }
+
+
+    @Transactional(readOnly = true)
+    public FileResponse getAllUserFiles(Long userId, int version) {
+        List<FileEntity> fileEntities = fileEntityRepository.findByUserIdAndStatus(
+                userId, FileStatus.ACTIVE);
+
+        List<FileEntityResponse> files = fileEntities.stream()
+                .map(file -> convertToResponse(file, version))
+                .collect(Collectors.toList());
+
+        long totalSize = fileEntities.stream()
+                .mapToLong(FileEntity::getFileSize)
+                .sum();
+
+        return FileResponse.builder()
+                .files(files)
+                .totalCount(files.size())
+                .totalSize(totalSize)
+                .formattedTotalSize(formatFileSize(totalSize))
+                .page(1)
+                .pageSize(files.size())
+                .build();
+    }
+
+
     @Transactional(readOnly = true)
     public FileResponse getUserFiles(Long userId, int page, int pageSize, int version) {
         List<FileEntity> allFiles = fileEntityRepository.findByUserIdAndStatus(
@@ -178,6 +213,95 @@ public class FileEntityService {
         return totalSize != null ? totalSize : 0L;
     }
 
+    public void changeStatus(ProtectionStatus newStatus, String fileId) {
+        FileEntity fileEntity = fileEntityRepository.findById(fileId)
+                .orElseThrow(() -> new FileEntityNotFoundException(fileId));
+        fileEntity.setProtectionStatus(newStatus);
+
+        fileEntityRepository.save(fileEntity);
+    }
+
+    @Transactional
+    public void writeProtectedFile(String id, byte[] data, String fileExt) throws IOException {
+        FileEntity fileEntity = fileEntityRepository.findById(id)
+                .orElseThrow(() -> new RuntimeException("File not found: " + id));
+
+        String extension = determineFileExtension(fileExt, fileEntity);
+        Path protectedFilePath = prepareProtectedPath(fileEntity, extension);
+
+        if (Files.exists(protectedFilePath)) {
+            Files.delete(protectedFilePath);
+        }
+
+        Files.write(protectedFilePath, data);
+
+        fileEntity.setProtectedFilePath(protectedFilePath.toString());
+        fileEntity.setProtectedAt(LocalDateTime.now());
+        fileEntity.setUpdatedAt(LocalDateTime.now());
+        fileEntity.setFileExtension(extension);
+        fileEntity.setProtectionStatus(ProtectionStatus.PROTECTED);
+
+        fileEntityRepository.save(fileEntity);
+    }
+
+    public FileEntity findBySignature(String signature) {
+        return fileEntityRepository.findBySignature(signature);
+    }
+
+    public File getFileById(String id) {
+        try {
+            FileEntity fileEntity = fileEntityRepository.findById(id).orElseThrow(() ->
+                    new RuntimeException("File not found: " + id));
+
+            File file = new File(fileEntity.getFilePath());
+
+            if (!file.exists()) {
+                throw new RuntimeException("File not found on disk: " + fileEntity.getFilePath());
+            }
+
+            return file;
+        } catch (Exception e) {
+            log.error("Error getting file: {}", id, e);
+            return null;
+        }
+    }
+
+    public Path prepareProtectedPath(FileEntity fileEntity, String extension) throws IOException {
+        Path originalPath = Paths.get(fileEntity.getFilePath());
+
+        String pathStr = originalPath.toString();
+        pathStr = pathStr.replaceFirst("/uploads/uploads/", "/uploads/protected/");
+
+        Path protectedPath = Paths.get(pathStr);
+        String fileName = protectedPath.getFileName().toString();
+
+        if (extension != null) {
+            String nameWithoutExt = fileName;
+            int lastDotIndex = fileName.lastIndexOf('.');
+            if (lastDotIndex > 0) {
+                nameWithoutExt = fileName.substring(0, lastDotIndex);
+            }
+            fileName = nameWithoutExt + "." + extension;
+
+            protectedPath = protectedPath.getParent().resolve(fileName);
+        }
+
+        Files.createDirectories(protectedPath.getParent());
+
+        return protectedPath;
+    }
+
+    public void updateSignature(String signature, String fileId) throws IOException {
+        FileEntity fileEntity = fileEntityRepository.findByFileId(fileId);
+        fileEntity.setSignature(signature);
+        fileEntity.setProtectionStatus(ProtectionStatus.PROTECTED);
+        fileEntity.setUpdatedAt(LocalDateTime.now());
+        fileEntity.setProtectedAt(LocalDateTime.now());
+        fileEntity.setProtectedFilePath(prepareProtectedPath(fileEntity, fileEntity.getFileExtension()).toString());
+
+        fileEntityRepository.save(fileEntity);
+    }
+
     private boolean checkFileExistsOnDisk(String filePath) {
         try {
             return Files.exists(Paths.get(filePath));
@@ -187,6 +311,14 @@ public class FileEntityService {
         }
     }
 
+    private String determineFileExtension(String fileExt, FileEntity fileEntity) {
+        if (fileExt != null && !fileExt.trim().isEmpty()) {
+            return fileExt;
+        } else {
+            return fileEntity.getFileExtension();
+        }
+    }
+
     private FileEntityResponse convertToResponse(FileEntity fileEntity, int version) {
         boolean existsOnDisk = checkFileExistsOnDisk(fileEntity.getFilePath());
 

src/main/java/ru/soune/nocopy/service/file/NoCopyProcessingListener.java

@@ -1,46 +0,0 @@
-package ru.soune.nocopy.service.file;
-
-import com.vrt.fileprotection.FileProtector;
-import lombok.AllArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.springframework.stereotype.Component;
-import ru.soune.nocopy.entity.file.FileEntity;
-import ru.soune.nocopy.entity.file.ProtectionStatus;
-import ru.soune.nocopy.exception.FileEntityNotFoundException;
-import ru.soune.nocopy.repository.FileEntityRepository;
-
-@Slf4j
-@Component
-@AllArgsConstructor
-public class NoCopyProcessingListener implements FileProtector.ProcessingListener {
-
-    private final FileEntityRepository fileEntityRepository;
-
-    @Override
-    public void onStartProcessing(FileProtector.FileInfo fileInfo) {
-        changeStatus(ProtectionStatus.PROCESSING, fileInfo.getId());
-    }
-
-    @Override
-    public void onProcessingFailed(FileProtector.FileInfo fileInfo) {
-        changeStatus(ProtectionStatus.FAILED, fileInfo.getId());
-    }
-
-    @Override
-    public void onSavingFailed(FileProtector.FileInfo fileInfo) {
-        changeStatus(ProtectionStatus.FAILED_SAVE, fileInfo.getId());
-    }
-
-    @Override
-    public void onFinish(FileProtector.FileInfo fileInfo) {
-        changeStatus(ProtectionStatus.PROTECTED, fileInfo.getId());;
-    }
-
-    private void changeStatus(ProtectionStatus newStatus, String fileId) {
-        FileEntity fileEntity = fileEntityRepository.findById(fileId)
-                .orElseThrow(() -> new FileEntityNotFoundException(fileId));
-        fileEntity.setProtectionStatus(newStatus);
-
-        fileEntityRepository.save(fileEntity);
-    }
-}

src/main/java/ru/soune/nocopy/service/file/ProtectionFileProvider.java

@@ -1,166 +0,0 @@
-package ru.soune.nocopy.service.file;
-
-import com.vrt.fileprotection.FileProtector;
-import com.vrt.fileprotection.OperationResult;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-import org.springframework.stereotype.Component;
-import ru.soune.nocopy.entity.file.FileEntity;
-import ru.soune.nocopy.repository.FileEntityRepository;
-
-import java.io.File;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.time.LocalDateTime;
-
-@Slf4j
-@Component
-@RequiredArgsConstructor
-public class ProtectionFileProvider implements FileProtector.FileProvider {
-
-
-    private final FileEntityRepository fileRepository;
-
-    @Nullable
-    @Override
-    public File getImageFile(@NotNull String id) {
-        return getFileById(id);
-    }
-
-    @Nullable
-    @Override
-    public File getVideoFile(@NotNull String id) {
-        return getFileById(id);
-    }
-
-    @Nullable
-    @Override
-    public File getAudioFile(@NotNull String id) {
-        return getFileById(id);
-    }
-
-    @NotNull
-    @Override
-    public com.vrt.fileprotection.OperationResult writeSignature(@NotNull String s, @NotNull byte[] bytes) {
-        return null;
-    }
-
-    @NotNull
-    @Override
-    public com.vrt.fileprotection.OperationResult writeAudioFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
-        try {
-            writeProtectedFile(id, data, fileExt);
-            return OperationResult.Companion.success();
-        } catch (Exception e) {
-            log.error("Failed to create protected file: {}", id, e);
-            return OperationResult.Companion.failure("Failed to create protected file");
-        }
-    }
-
-    @NotNull
-    @Override
-    public com.vrt.fileprotection.OperationResult writeVideoFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
-        try {
-            writeProtectedFile(id, data, fileExt);
-            return OperationResult.Companion.success();
-        } catch (Exception e) {
-            log.error("Failed to create protected file: {}", id, e);
-            return OperationResult.Companion.failure("Failed to create protected file");
-        }
-    }
-
-    @NotNull
-    @Override
-    public com.vrt.fileprotection.OperationResult writeImageFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
-        try {
-            writeProtectedFile(id, data, fileExt);
-            return OperationResult.Companion.success();
-        } catch (Exception e) {
-            log.error("Failed to create protected file: {}", id, e);
-            return OperationResult.Companion.failure("Failed to create protected file");
-        }
-    }
-
-    @Nullable
-    @Override
-    public File getSignature(@NotNull String s) {
-        return null;
-    }
-
-    private void writeProtectedFile(String id, byte[] data, String fileExt) throws IOException {
-        FileEntity fileEntity = fileRepository.findById(id)
-                .orElseThrow(() -> new RuntimeException("File not found: " + id));
-
-        String extension = determineFileExtension(fileExt, fileEntity);
-        Path protectedFilePath = prepareProtectedPath(fileEntity, extension);
-
-        if (Files.exists(protectedFilePath)) {
-            Files.delete(protectedFilePath);
-        }
-
-        Files.write(protectedFilePath, data);
-
-        fileEntity.setProtectedFilePath(protectedFilePath.toString());
-        fileEntity.setProtectedAt(LocalDateTime.now());
-        fileEntity.setUpdatedAt(LocalDateTime.now());
-        fileEntity.setFileExtension(extension);
-
-        fileRepository.save(fileEntity);
-    }
-
-
-    private File getFileById(String id) {
-        try {
-            FileEntity fileEntity = fileRepository.findById(id).orElseThrow(() ->
-                    new RuntimeException("File not found: " + id));
-
-            File file = new File(fileEntity.getFilePath());
-
-            if (!file.exists()) {
-                throw new RuntimeException("File not found on disk: " + fileEntity.getFilePath());
-            }
-
-            return file;
-        } catch (Exception e) {
-            log.error("Error getting file: {}", id, e);
-            return null;
-        }
-    }
-
-    private String determineFileExtension(String fileExt, FileEntity fileEntity) {
-        if (fileExt != null && !fileExt.trim().isEmpty()) {
-            return fileExt;
-        } else {
-            return fileEntity.getFileExtension();
-        }
-    }
-
-    private Path prepareProtectedPath(FileEntity fileEntity, String extension) throws IOException {
-        Path originalPath = Paths.get(fileEntity.getFilePath());
-
-        String pathStr = originalPath.toString();
-        pathStr = pathStr.replaceFirst("/uploads/uploads/", "/uploads/protected/");
-
-        Path protectedPath = Paths.get(pathStr);
-        String fileName = protectedPath.getFileName().toString();
-
-        if (extension != null) {
-            String nameWithoutExt = fileName;
-            int lastDotIndex = fileName.lastIndexOf('.');
-            if (lastDotIndex > 0) {
-                nameWithoutExt = fileName.substring(0, lastDotIndex);
-            }
-            fileName = nameWithoutExt + "." + extension;
-
-            protectedPath = protectedPath.getParent().resolve(fileName);
-        }
-
-        Files.createDirectories(protectedPath.getParent());
-
-        return protectedPath;
-    }
-}

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

@@ -0,0 +1,44 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.AudioFilePathProvider;
+import com.vrt.fileprotection.FileProtector;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jetbrains.annotations.NotNull;
+import org.springframework.stereotype.Service;
+import ru.soune.nocopy.entity.file.FileEntity;
+import ru.soune.nocopy.repository.FileEntityRepository;
+import ru.soune.nocopy.service.file.FileEntityService;
+
+import java.io.IOException;
+import java.util.Optional;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AudioFilePathProviderImpl implements AudioFilePathProvider {
+
+    private final FileEntityService fileEntityService;
+
+    private final FileEntityRepository fileEntityRepository;
+
+    @Override
+    public @NotNull String providePath(@NotNull FileProtector.FileInfo fileInfo) {
+        String filePath;
+        Optional<FileEntity> optionalFileEntity = fileEntityRepository.findById(fileInfo.getId());
+
+        if (optionalFileEntity.isEmpty()) {
+            throw new NullPointerException();
+        }
+
+        FileEntity fileEntity = optionalFileEntity.get();
+
+        try {
+            filePath = fileEntityService.prepareProtectedPath(fileEntity, fileEntity.getFileExtension()).toString();
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+        return filePath;
+    }
+}

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

@@ -0,0 +1,39 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.fileprotection.FileProtector;
+import com.vrt.fileprotection.audio.AudioLocalSearch;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Service;
+import ru.soune.nocopy.service.file.FileEntityService;
+import ru.soune.nocopy.util.FileUtil;
+
+import java.io.IOException;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AudioLocalSearchImpl implements AudioLocalSearch {
+
+    private final FileEntityService fileEntityService;
+
+    private final FileUtil fileUtil;
+
+    @Override
+    public @Nullable FileProtector.FileInfo findBySignature(@NotNull String signature) {
+        return fileUtil.createFileInfo(fileEntityService.findBySignature(signature));
+    }
+
+    @Override
+    public void updateSignature(@NotNull String signature, @NotNull FileProtector.FileInfo fileInfo) {
+        try {
+            fileEntityService.updateSignature(signature, fileInfo.getId());
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+
+}

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

@@ -1,4 +1,4 @@
-package ru.soune.nocopy.service.file;
+package ru.soune.nocopy.service.file.impl;
 
 import jakarta.annotation.PostConstruct;
 import lombok.RequiredArgsConstructor;
@@ -23,6 +23,8 @@ import ru.soune.nocopy.repository.FileUploadSessionRepository;
 import ru.soune.nocopy.repository.SimilarImageProjection;
 import ru.soune.nocopy.service.FileSimilarityService;
 import ru.soune.nocopy.service.ImageHashService;
+import ru.soune.nocopy.service.file.FileEntityService;
+import ru.soune.nocopy.service.file.FileUploadService;
 
 import java.io.*;
 import java.nio.file.*;

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

@@ -0,0 +1,54 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.fileprotection.FileProtector;
+import com.vrt.fileprotection.image.ImageLocalSearch;
+import com.vrt.fileprotection.image.phash.PHash;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Service;
+import ru.soune.nocopy.dto.file.SimilarFileDTO;
+import ru.soune.nocopy.entity.file.FileEntity;
+import ru.soune.nocopy.entity.file.ImageHashEntity;
+import ru.soune.nocopy.repository.FileEntityRepository;
+import ru.soune.nocopy.repository.ImageHashRepository;
+import ru.soune.nocopy.service.FileSimilarityService;
+import ru.soune.nocopy.util.FileUtil;
+
+import java.util.List;
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ImageLocalSearchImpl implements ImageLocalSearch {
+
+    private final FileSimilarityService fileSimilarityService;
+
+    private final ImageHashRepository imageHashRepository;
+
+    private final FileUtil fileUtil;
+
+    private final FileEntityRepository fileEntityRepository;
+
+    @Override
+    public @NotNull List<Result> find(@NotNull FileProtector.FileInfo fileInfo) {
+        List<SimilarFileDTO> duplicateByHammingDistance =
+                fileSimilarityService.findDuplicateByHammingDistance(fileInfo.getId(), 10,
+                        5, 10);
+
+        return duplicateByHammingDistance.stream()
+                .map(fileUtil::convertToResult)
+                .toList();
+    }
+
+    @Override
+    public @Nullable FileProtector.FileInfo findByPHash(@NotNull PHash pHash) {
+        ImageHashEntity imageHashEntity =
+                imageHashRepository.findByHash64HiAndHash64Lo(Math.toIntExact(pHash.getFirstPart()),
+                        Math.toIntExact(pHash.getSecondPart()));
+        FileEntity file = fileEntityRepository.findByFileId(imageHashEntity.getFileId());
+
+        return new FileProtector.FileInfo(FileProtector.Type.IMAGE, imageHashEntity.getFileId(),
+                String.valueOf(file.getUserId()));
+    }
+}

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

@@ -0,0 +1,34 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.fileprotection.FileProtector;
+import com.vrt.fileprotection.OperationResult;
+import com.vrt.fileprotection.image.ImageUniqueCheck;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jetbrains.annotations.NotNull;
+import org.springframework.stereotype.Service;
+import ru.soune.nocopy.dto.file.SimilarFileDTO;
+import ru.soune.nocopy.service.FileSimilarityService;
+
+import java.util.List;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class ImageUniqueCheckImpl implements ImageUniqueCheck {
+
+    private final FileSimilarityService fileSimilarityService;
+
+    @Override
+    public @NotNull OperationResult check(@NotNull FileProtector.FileInfo fileInfo) {
+        String fileId = fileInfo.getId();
+        List<SimilarFileDTO> duplicateByHammingDistance =
+                fileSimilarityService.findDuplicateByHammingDistance(fileId, 3, 3, 4);
+
+        if (duplicateByHammingDistance == null || duplicateByHammingDistance.isEmpty()) {
+            return OperationResult.Companion.success();
+        } else {
+            return OperationResult.Companion.failure("Duplicate file");
+        }
+    }
+}

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

@@ -0,0 +1,36 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.fileprotection.FileProtector;
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import ru.soune.nocopy.entity.file.ProtectionStatus;
+import ru.soune.nocopy.service.file.FileEntityService;
+
+@Slf4j
+@Component
+@AllArgsConstructor
+public class NoCopyProcessingListenerImpl implements FileProtector.ProcessingListener {
+
+    private final FileEntityService fileEntityService;
+
+    @Override
+    public void onStartProcessing(FileProtector.FileInfo fileInfo) {
+        fileEntityService.changeStatus(ProtectionStatus.PROCESSING, fileInfo.getId());
+    }
+
+    @Override
+    public void onProcessingFailed(FileProtector.FileInfo fileInfo) {
+        fileEntityService.changeStatus(ProtectionStatus.FAILED, fileInfo.getId());
+    }
+
+    @Override
+    public void onSavingFailed(FileProtector.FileInfo fileInfo) {
+        fileEntityService.changeStatus(ProtectionStatus.FAILED_SAVE, fileInfo.getId());
+    }
+
+    @Override
+    public void onFinish(FileProtector.FileInfo fileInfo) {
+        fileEntityService.changeStatus(ProtectionStatus.PROTECTED, fileInfo.getId());;
+    }
+}

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

@@ -0,0 +1,84 @@
+package ru.soune.nocopy.service.file.impl;
+
+import com.vrt.fileprotection.FileProtector;
+import com.vrt.fileprotection.OperationResult;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.springframework.stereotype.Component;
+import ru.soune.nocopy.service.file.FileEntityService;
+
+import java.io.File;
+
+@Slf4j
+@Component
+@RequiredArgsConstructor
+public class ProtectionFileProviderImpl implements FileProtector.FileProvider {
+
+    private final FileEntityService fileEntityService;
+
+    @Nullable
+    @Override
+    public File getImageFile(@NotNull String id) {
+        return fileEntityService.getFileById(id);
+    }
+
+    @Nullable
+    @Override
+    public File getVideoFile(@NotNull String id) {
+        return fileEntityService.getFileById(id);
+    }
+
+    @Nullable
+    @Override
+    public File getAudioFile(@NotNull String id) {
+        return fileEntityService.getFileById(id);
+    }
+
+    @Override
+    public @Nullable File getSignature() {
+        return null;
+    }
+
+    @NotNull
+    @Override
+    public com.vrt.fileprotection.OperationResult writeAudioFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
+        try {
+            fileEntityService.writeProtectedFile(id, data, fileExt);
+            return OperationResult.Companion.success();
+        } catch (Exception e) {
+            log.error("Failed to create protected file: {}", id, e);
+            return OperationResult.Companion.failure("Failed to create protected file");
+        }
+    }
+
+    @NotNull
+    @Override
+    public com.vrt.fileprotection.OperationResult writeVideoFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
+        try {
+            fileEntityService.writeProtectedFile(id, data, fileExt);
+            return OperationResult.Companion.success();
+        } catch (Exception e) {
+            log.error("Failed to create protected file: {}", id, e);
+            return OperationResult.Companion.failure("Failed to create protected file");
+        }
+    }
+
+    @NotNull
+    @Override
+    public com.vrt.fileprotection.OperationResult writeImageFile(@NotNull String id, @NotNull byte[] data, @Nullable String fileExt) {
+        try {
+            fileEntityService.writeProtectedFile(id, data, fileExt);
+            return OperationResult.Companion.success();
+        } catch (Exception e) {
+            log.error("Failed to create protected file: {}", id, e);
+            return OperationResult.Companion.failure("Failed to create protected file");
+        }
+    }
+
+    @Override
+    public @NotNull OperationResult writeSignature(@NotNull byte[] bytes) {
+        return null;
+    }
+}