dev add method link

src/main/java/ru/soune/nocopy/handler/FileEntityHandler.java

@@ -13,11 +13,13 @@ import ru.soune.nocopy.dto.*;
 import ru.soune.nocopy.dto.file.*;
 import ru.soune.nocopy.entity.file.*;
 import ru.soune.nocopy.entity.file.moderation.ModerationLog;
+import ru.soune.nocopy.entity.file.permission.PermissionType;
 import ru.soune.nocopy.entity.monitoring.FileMonitoringEntity;
 import ru.soune.nocopy.exception.*;
 import ru.soune.nocopy.repository.*;
 import ru.soune.nocopy.service.file.cloud.CloudStorageService;
 import ru.soune.nocopy.service.file.moderation.ModerationService;
+import ru.soune.nocopy.service.file.permission.FileAccessService;
 import ru.soune.nocopy.service.register.AuthService;
 import ru.soune.nocopy.service.file.FileEntityService;
 import ru.soune.nocopy.service.file.FileStatsService;
@@ -57,6 +59,8 @@ public class FileEntityHandler implements RequestHandler {
 
     private final ImageHashRepository imageHashRepository;
 
+    private FileAccessService fileAccessService;
+
     @Override
     public BaseResponse handle(BaseRequest request) {
         try {
@@ -96,6 +100,8 @@ public class FileEntityHandler implements RequestHandler {
                     return handleGetUserAppeals(request, fileRequest);
                 case "files_for_moderation":
                     return handleGetFilesForModeration(request, fileRequest);
+                case "change_permission":
+                    return handleChangePermission(request, fileRequest);
                 default:
                     ActionResponse response = ActionResponse.builder()
                             .action(action)
@@ -160,6 +166,57 @@ public class FileEntityHandler implements RequestHandler {
         }
     }
 
+    private BaseResponse handleChangePermission(BaseRequest request, FileEntityRequest fileRequest) {
+        try {
+            Long userId =  authService.useUserAuthToken(fileRequest.getToken());
+            FileEntityResponse fileInfo = fileEntityService.getById(fileRequest.getFileId(), request.getVersion());
+
+            if (!fileInfo.getUserId().equals(userId)) {
+                return new BaseResponse(request.getMsgId(),
+                        MessageCode.ACCESS_DENIED.getCode(),
+                        "Access denied",
+                        null);
+            }
+
+            Map<String, Boolean> permissions = fileRequest.getPermissions();
+
+            if (!PermissionType.areAllValid(permissions)) {
+                return new BaseResponse(request.getMsgId(),
+                        MessageCode.PERMISSION_NOT_VALID.getCode(),
+                        MessageCode.PERMISSION_NOT_VALID.getDescription(),
+                        null);
+            }
+
+            for (Map.Entry<String, Boolean> entry: permissions.entrySet()) {
+                try {
+                    fileAccessService.changePermission(fileInfo.getId(), PermissionType.valueOf(entry.getKey()),
+                            entry.getValue());
+                } catch (FileEntityNotFoundException e) {
+                    return new BaseResponse(request.getMsgId(),
+                            MessageCode.FILE_NOT_FOUND.getCode(),
+                            MessageCode.FILE_NOT_FOUND.getDescription(),
+                            null);
+                }
+            }
+
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.SUCCESS.getCode(),
+                    MessageCode.SUCCESS.getDescription(),
+                    fileInfo);
+        } catch (NotFoundAuthToken e) {
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.INVALID_TOKEN.getCode(),
+                    "Authentication required",
+                    null);
+        } catch (Exception e) {
+            log.error("Error getting file info", e);
+            return new BaseResponse(request.getMsgId(),
+                    MessageCode.FILE_UPLOAD_ERROR.getCode(),
+                    "Failed to get file info: " + e.getMessage(),
+                    null);
+        }
+    }
+
     private BaseResponse handleGetFileBySession(BaseRequest request, FileEntityRequest fileRequest) {
         try {
             Long userId = authService.useUserAuthToken(fileRequest.getToken());