Frooodle/license (#1994)

src/main/java/stirling/software/SPDF/service/CustomPDDocumentFactory.java

@@ -13,7 +13,6 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 import org.springframework.web.multipart.MultipartFile;
 
-import stirling.software.SPDF.config.PdfMetadataService;
 import stirling.software.SPDF.model.PdfMetadata;
 import stirling.software.SPDF.model.api.PDFFile;
 
@@ -35,6 +34,36 @@ public class CustomPDDocumentFactory {
         return document;
     }
 
+    public byte[] createNewBytesBasedOnOldDocument(byte[] oldDocument) throws IOException {
+        PDDocument document = Loader.loadPDF(oldDocument);
+        return createNewBytesBasedOnOldDocument(document);
+    }
+
+    public byte[] createNewBytesBasedOnOldDocument(File oldDocument) throws IOException {
+        PDDocument document = Loader.loadPDF(oldDocument);
+        return createNewBytesBasedOnOldDocument(document);
+    }
+
+    public byte[] createNewBytesBasedOnOldDocument(PDDocument oldDocument) throws IOException {
+        pdfMetadataService.setMetadataToPdf(
+                oldDocument, pdfMetadataService.extractMetadataFromPdf(oldDocument), true);
+
+        ByteArrayOutputStream baos = new ByteArrayOutputStream();
+        oldDocument.save(baos);
+        oldDocument.close();
+        return baos.toByteArray();
+    }
+
+    public PDDocument createNewDocumentBasedOnOldDocument(byte[] oldDocument) throws IOException {
+        PDDocument document = Loader.loadPDF(oldDocument);
+        return createNewDocumentBasedOnOldDocument(document);
+    }
+
+    public PDDocument createNewDocumentBasedOnOldDocument(File oldDocument) throws IOException {
+        PDDocument document = Loader.loadPDF(oldDocument);
+        return createNewDocumentBasedOnOldDocument(document);
+    }
+
     public PDDocument createNewDocumentBasedOnOldDocument(PDDocument oldDocument)
             throws IOException {
         PDDocument document = new PDDocument();