Add visual workflow builder, fix critical bugs, and add Arabic i18n support

src/js/workflow/nodes/remove-annotations-node.ts

@@ -0,0 +1,46 @@
+import { ClassicPreset } from 'rete';
+import { BaseWorkflowNode } from './base-node';
+import { pdfSocket } from '../sockets';
+import type { SocketData } from '../types';
+import { requirePdfInput, processBatch } from '../types';
+import { PDFDocument, PDFName } from 'pdf-lib';
+
+export class RemoveAnnotationsNode extends BaseWorkflowNode {
+  readonly category = 'Edit & Annotate' as const;
+  readonly icon = 'ph-eraser';
+  readonly description = 'Strip all annotations';
+
+  constructor() {
+    super('Remove Annotations');
+    this.addInput('pdf', new ClassicPreset.Input(pdfSocket, 'PDF'));
+    this.addOutput('pdf', new ClassicPreset.Output(pdfSocket, 'Clean PDF'));
+  }
+
+  async data(
+    inputs: Record<string, SocketData[]>
+  ): Promise<Record<string, SocketData>> {
+    const pdfInputs = requirePdfInput(inputs, 'Remove Annotations');
+
+    return {
+      pdf: await processBatch(pdfInputs, async (input) => {
+        const pdfDoc = await PDFDocument.load(input.bytes);
+        const pages = pdfDoc.getPages();
+
+        for (const page of pages) {
+          const annots = page.node.Annots();
+          if (annots) {
+            page.node.delete(PDFName.of('Annots'));
+          }
+        }
+
+        const pdfBytes = await pdfDoc.save();
+        return {
+          type: 'pdf',
+          document: pdfDoc,
+          bytes: new Uint8Array(pdfBytes),
+          filename: input.filename.replace(/\.pdf$/i, '_clean.pdf'),
+        };
+      }),
+    };
+  }
+}