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

src/js/workflow/nodes/extract-images-node.ts

@@ -0,0 +1,70 @@
+import { ClassicPreset } from 'rete';
+import { BaseWorkflowNode } from './base-node';
+import { pdfSocket } from '../sockets';
+import type { SocketData } from '../types';
+import { requirePdfInput, extractAllPdfs } from '../types';
+import { downloadFile } from '../../utils/helpers.js';
+import { loadPyMuPDF } from '../../utils/pymupdf-loader.js';
+
+export class ExtractImagesNode extends BaseWorkflowNode {
+  readonly category = 'Output' as const;
+  readonly icon = 'ph-download-simple';
+  readonly description = 'Extract all images from PDF';
+
+  constructor() {
+    super('Extract Images');
+    this.addInput('pdf', new ClassicPreset.Input(pdfSocket, 'PDF'));
+  }
+
+  async data(
+    inputs: Record<string, SocketData[]>
+  ): Promise<Record<string, SocketData>> {
+    const pdfInputs = requirePdfInput(inputs, 'Extract Images');
+    const allPdfs = extractAllPdfs(pdfInputs);
+    const pymupdf = await loadPyMuPDF();
+
+    const JSZip = (await import('jszip')).default;
+    const zip = new JSZip();
+    let totalImages = 0;
+
+    for (const pdf of allPdfs) {
+      const blob = new Blob([new Uint8Array(pdf.bytes)], {
+        type: 'application/pdf',
+      });
+      const doc = await pymupdf.open(blob);
+      const pageCount = doc.pageCount;
+      const prefix =
+        allPdfs.length > 1 ? pdf.filename.replace(/\.pdf$/i, '') + '/' : '';
+
+      for (let pageIdx = 0; pageIdx < pageCount; pageIdx++) {
+        const page = doc.getPage(pageIdx);
+        const images = page.getImages();
+
+        for (const imgInfo of images) {
+          try {
+            const imgData = page.extractImage(imgInfo.xref);
+            if (imgData && imgData.data) {
+              totalImages++;
+              zip.file(
+                `${prefix}image_${totalImages}.${imgData.ext || 'png'}`,
+                imgData.data
+              );
+            }
+          } catch {
+            continue;
+          }
+        }
+      }
+      doc.close();
+    }
+
+    if (totalImages === 0) {
+      throw new Error('No images found in any of the connected PDFs');
+    }
+
+    const zipBlob = await zip.generateAsync({ type: 'blob' });
+    downloadFile(zipBlob, 'extracted_images.zip');
+
+    return {};
+  }
+}