| 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 } from 'pdf-lib'; |
|
|
| export class FlattenNode extends BaseWorkflowNode { |
| readonly category = 'Secure PDF' as const; |
| readonly icon = 'ph-stack'; |
| readonly description = 'Flatten forms and annotations'; |
|
|
| constructor() { |
| super('Flatten'); |
| this.addInput('pdf', new ClassicPreset.Input(pdfSocket, 'PDF')); |
| this.addOutput('pdf', new ClassicPreset.Output(pdfSocket, 'Flattened PDF')); |
| } |
|
|
| async data( |
| inputs: Record<string, SocketData[]> |
| ): Promise<Record<string, SocketData>> { |
| const pdfInputs = requirePdfInput(inputs, 'Flatten'); |
|
|
| return { |
| pdf: await processBatch(pdfInputs, async (input) => { |
| const pdfDoc = await PDFDocument.load(input.bytes); |
|
|
| try { |
| const form = pdfDoc.getForm(); |
| form.flatten(); |
| } catch (err) { |
| console.error('Flatten form error (may have no forms):', err); |
| } |
|
|
| const pdfBytes = await pdfDoc.save(); |
| return { |
| type: 'pdf', |
| document: pdfDoc, |
| bytes: new Uint8Array(pdfBytes), |
| filename: input.filename.replace(/\.pdf$/i, '_flattened.pdf'), |
| }; |
| }), |
| }; |
| } |
| } |
|
|
