fix check format

src/main/java/ru/soune/nocopy/handler/validator/FileUploadRequestValidator.java

@@ -24,7 +24,7 @@ public class FileUploadRequestValidator implements Validator {
 
         validateType(request.getFileType(), errors);
         validateFileName(request.getFileName(), errors);
-        validateExtension(request.getExtension(), request.getFileName(), errors);
+        validateExtension(request.getExtension(), request.getFileType(), errors);
     }
 
     private void validateType(String fileType, Errors errors) {
@@ -58,20 +58,13 @@ public class FileUploadRequestValidator implements Validator {
         }
     }
 
-    private void validateExtension(String fileType, String fileName, Errors errors) {
-        if (fileType == null || fileType.isBlank()) {
+    private void validateExtension(String extension, String fileType,  Errors errors) {
+        if (extension == null || extension.isBlank()) {
             errors.rejectValue("fileType", "fileType.required", "File type is required");
             return;
         }
 
-        String fileExtension = getFileExtension(fileName);
-
-        if (fileExtension == null || fileExtension.isBlank()) {
-            errors.rejectValue("fileName", "fileName.invalid.extension", "File must have an extension");
-            return;
-        }
-
-        if (fileExtension.contains(".")) {
+        if (extension.contains(".")) {
             errors.rejectValue("extension", "extension.required", "Extension contains comma");
             return;
         }
@@ -79,16 +72,10 @@ public class FileUploadRequestValidator implements Validator {
         try {
             FileType parsedType = FileType.valueOf(fileType.toUpperCase());
 
-            if (!supportedFileTypes.contains(parsedType)) {
-                errors.rejectValue("fileType", "fileType.unsupported",
-                        "Unsupported file type. Supported types: " + supportedFileTypes);
-                return;
-            }
-
-            if (!parsedType.supportsExtension(fileExtension)) {
+            if (!parsedType.supportsExtension(extension)) {
                 errors.rejectValue("fileName", "fileType.extension.mismatch",
                         String.format("File extension '%s' does not match file type '%s'. Allowed extensions for %s: %s",
-                                fileExtension, parsedType.getDisplayName(), parsedType.getDisplayName(),
+                                extension, parsedType.getDisplayName(), parsedType.getDisplayName(),
                                 parsedType.getAllowedExtensions()));
             }
 
@@ -99,9 +86,6 @@ public class FileUploadRequestValidator implements Validator {
     }
 
     private String getFileExtension(String fileName) {
-        if (fileName == null || fileName.lastIndexOf('.') == -1) {
-            return null;
-        }
         return fileName.substring(fileName.lastIndexOf('.') + 1).toLowerCase();
     }
 }