created AttachmentsController

stirling-pdf/src/main/java/stirling/software/SPDF/controller/api/misc/AttachmentsController.java

@@ -1,28 +1,132 @@
 package stirling.software.SPDF.controller.api.misc;
 
-import io.swagger.v3.oas.annotations.tags.Tag;
-import lombok.RequiredArgsConstructor;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.util.List;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
+import org.apache.pdfbox.pdmodel.PDEmbeddedFilesNameTreeNode;
+import org.apache.pdfbox.pdmodel.PageMode;
+import org.apache.pdfbox.pdmodel.common.filespecification.PDComplexFileSpecification;
+import org.apache.pdfbox.pdmodel.common.filespecification.PDEmbeddedFile;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.multipart.MultipartFile;
+
+import io.github.pixee.security.Filenames;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+
 import stirling.software.common.service.CustomPDFDocumentFactory;
+import stirling.software.common.util.WebResponseUtils;
 
 @RestController
 @RequiredArgsConstructor
 @RequestMapping("/api/v1/misc")
 @Tag(name = "Misc", description = "Miscellaneous APIs")
+@Slf4j
 public class AttachmentsController {
 
     private final CustomPDFDocumentFactory pdfDocumentFactory;
 
     @PostMapping(consumes = "multipart/form-data", value = "/add-attachments")
+    @Operation(
+            summary = "Add attachments to PDF",
+            description = "This endpoint adds embedded files (attachments) to a PDF and sets the PageMode to UseAttachments to make them visible. Input:PDF + Files Output:PDF Type:MISO")
     public ResponseEntity<byte[]> addAttachments(
-            String fileName, String attachmentName, byte[] attachmentData) {
-        // Implementation for adding attachments to a PDF file
-        // This is a placeholder method and should be implemented as per requirements.
-        return ResponseEntity.ok()
-                .header("Content-Disposition", "attachment; filename=\"" + fileName + "\"")
-                .body(attachmentData);
+            @RequestParam("fileInput") MultipartFile pdfFile,
+            @RequestParam("attachments") List<MultipartFile> attachments)
+            throws IOException {
+
+        // Load the PDF document
+        PDDocument document = pdfDocumentFactory.load(pdfFile, true);
+        
+        // Get or create the document catalog
+        PDDocumentCatalog catalog = document.getDocumentCatalog();
+        
+        // Create embedded files name tree if it doesn't exist
+        PDEmbeddedFilesNameTreeNode efTree = catalog.getNames().getEmbeddedFiles();
+        if (efTree == null) {
+            efTree = new PDEmbeddedFilesNameTreeNode();
+            catalog.getNames().setEmbeddedFiles(efTree);
+        }
+
+        // Add each attachment
+        for (MultipartFile attachment : attachments) {
+            if (attachment != null && !attachment.isEmpty()) {
+                addEmbeddedFile(document, efTree, attachment);
+            }
+        }
+
+        // Set PageMode to UseAttachments to show the attachments panel
+        catalog.setPageMode(PageMode.USE_ATTACHMENTS);
+
+        // Return the modified PDF
+        return WebResponseUtils.pdfDocToWebResponse(
+                document,
+                Filenames.toSimpleFileName(pdfFile.getOriginalFilename())
+                        .replaceFirst("[.][^.]+$", "") + "_with_attachments.pdf");
+    }
+
+    @PostMapping(consumes = "multipart/form-data", value = "/remove-attachments")
+    @Operation(
+            summary = "Remove attachments from PDF",
+            description = "This endpoint removes all embedded files (attachments) from a PDF. Input:PDF Output:PDF Type:SISO")
+    public ResponseEntity<byte[]> removeAttachments(
+            @RequestParam("fileInput") MultipartFile pdfFile)
+            throws IOException {
+
+        // Load the PDF document
+        PDDocument document = pdfDocumentFactory.load(pdfFile, true);
+        
+        // Get the document catalog
+        PDDocumentCatalog catalog = document.getDocumentCatalog();
+        
+        // Remove embedded files
+        if (catalog.getNames() != null) {
+            catalog.getNames().setEmbeddedFiles(null);
+        }
+
+        // Reset PageMode to UseNone (default)
+        catalog.setPageMode(PageMode.USE_NONE);
+
+        // Return the modified PDF
+        return WebResponseUtils.pdfDocToWebResponse(
+                document,
+                Filenames.toSimpleFileName(pdfFile.getOriginalFilename())
+                        .replaceFirst("[.][^.]+$", "") + "_attachments_removed.pdf");
+    }
+
+    private void addEmbeddedFile(PDDocument document, PDEmbeddedFilesNameTreeNode efTree, MultipartFile file)
+            throws IOException {
+        
+        // Create file specification
+        PDComplexFileSpecification fs = new PDComplexFileSpecification();
+        fs.setFile(file.getOriginalFilename());
+        fs.setFileDescription("Embedded file: " + file.getOriginalFilename());
+
+        // Create embedded file
+        PDEmbeddedFile ef = new PDEmbeddedFile(document, new ByteArrayInputStream(file.getBytes()));
+        ef.setSize((int) file.getSize());
+        ef.setCreationDate(new java.util.GregorianCalendar());
+        ef.setModDate(new java.util.GregorianCalendar());
+
+        // Set MIME type if available
+        String contentType = file.getContentType();
+        if (contentType != null && !contentType.isEmpty()) {
+            ef.setSubtype(contentType);
+        }
+
+        // Associate embedded file with file specification
+        fs.setEmbeddedFile(ef);
+
+        // Add to the name tree
+        efTree.setNames(java.util.Collections.singletonMap(file.getOriginalFilename(), fs));
+        
+        log.info("Added embedded file: {} ({} bytes)", file.getOriginalFilename(), file.getSize());
     }
 }

stirling-pdf/src/main/java/stirling/software/SPDF/controller/web/OtherWebController.java

@@ -191,4 +191,11 @@ public class OtherWebController {
         model.addAttribute("currentPage", "auto-rename");
         return "misc/auto-rename";
     }
+
+    @GetMapping("/attachments")
+    @Hidden
+    public String attachmentsForm(Model model) {
+        model.addAttribute("currentPage", "attachments");
+        return "misc/attachments";
+    }
 }

stirling-pdf/src/main/resources/messages_en_US.properties

@@ -472,6 +472,10 @@ home.addImage.title=Add image
 home.addImage.desc=Adds a image onto a set location on the PDF
 addImage.tags=img,jpg,picture,photo
 
+home.attachments.title=Attachments
+home.attachments.desc=Add or remove embedded files (attachments) to/from a PDF
+attachments.tags=embed,attach,file,attachment
+
 home.watermark.title=Add Watermark
 home.watermark.desc=Add a custom watermark to your PDF document.
 watermark.tags=Text,repeating,label,own,copyright,trademark,img,jpg,picture,photo
@@ -1153,6 +1157,18 @@ addImage.upload=Add image
 addImage.submit=Add image
 
 
+#attachments
+attachments.title=Attachments
+attachments.header=Add attachments to PDF
+attachments.removeHeader=Remove attachments from PDF
+attachments.selectFiles=Select files to attach
+attachments.description=Allows you to add attachments to the PDF
+attachments.descriptionPlaceholder=Enter a description for the attachments...
+attachments.addButton=Add Attachments
+attachments.removeDescription=This will remove all embedded files from the PDF.
+attachments.removeButton=Remove All Attachments
+
+
 #merge
 merge.title=Merge
 merge.header=Merge multiple PDFs (2+)