122 lines
3.8 KiB
TypeScript
122 lines
3.8 KiB
TypeScript
import { ClassicPreset } from 'rete';
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import { BaseWorkflowNode } from './base-node';
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import { pdfSocket } from '../sockets';
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import type { SocketData } from '../types';
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import { requirePdfInput, processBatch } from '../types';
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import { PDFDocument } from 'pdf-lib';
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import { WasmProvider } from '../../utils/wasm-provider.js';
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export class TableOfContentsNode extends BaseWorkflowNode {
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readonly category = 'Organize & Manage' as const;
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readonly icon = 'ph-list';
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readonly description = 'Generate table of contents from bookmarks';
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constructor() {
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super('Table of Contents');
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this.addInput('pdf', new ClassicPreset.Input(pdfSocket, 'PDF'));
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this.addOutput('pdf', new ClassicPreset.Output(pdfSocket, 'PDF with TOC'));
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this.addControl(
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'title',
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new ClassicPreset.InputControl('text', { initial: 'Table of Contents' })
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);
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this.addControl(
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'fontSize',
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new ClassicPreset.InputControl('number', { initial: 12 })
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);
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this.addControl(
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'fontFamily',
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new ClassicPreset.InputControl('number', { initial: 0 })
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);
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this.addControl(
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'addBookmark',
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new ClassicPreset.InputControl('text', { initial: 'true' })
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);
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}
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async data(
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inputs: Record<string, SocketData[]>
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): Promise<Record<string, SocketData>> {
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const pdfInputs = requirePdfInput(inputs, 'Table of Contents');
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const titleCtrl = this.controls['title'] as
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| ClassicPreset.InputControl<'text'>
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| undefined;
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const fontSizeCtrl = this.controls['fontSize'] as
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| ClassicPreset.InputControl<'number'>
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| undefined;
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const fontFamilyCtrl = this.controls['fontFamily'] as
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| ClassicPreset.InputControl<'number'>
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| undefined;
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const addBookmarkCtrl = this.controls['addBookmark'] as
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| ClassicPreset.InputControl<'text'>
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| undefined;
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const title = titleCtrl?.value ?? 'Table of Contents';
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const fontSize = fontSizeCtrl?.value ?? 12;
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const fontFamily = fontFamilyCtrl?.value ?? 0;
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const addBookmark = (addBookmarkCtrl?.value ?? 'true') === 'true';
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const cpdfUrl = WasmProvider.getUrl('cpdf');
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if (!cpdfUrl)
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throw new Error(
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'CoherentPDF is not configured. Please configure it in Advanced Settings.'
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);
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return {
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pdf: await processBatch(pdfInputs, async (input) => {
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const resultBytes = await new Promise<Uint8Array>((resolve, reject) => {
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const worker = new Worker(
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import.meta.env.BASE_URL + 'workers/table-of-contents.worker.js'
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);
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worker.onmessage = (e: MessageEvent) => {
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worker.terminate();
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if (e.data.status === 'success') {
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resolve(new Uint8Array(e.data.pdfBytes));
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} else {
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reject(
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new Error(
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e.data.message || 'Failed to generate table of contents'
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)
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);
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}
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};
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worker.onerror = (err) => {
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worker.terminate();
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reject(new Error('Worker error: ' + err.message));
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};
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const arrayBuffer = input.bytes.buffer.slice(
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input.bytes.byteOffset,
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input.bytes.byteOffset + input.bytes.byteLength
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);
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worker.postMessage(
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{
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command: 'generate-toc',
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pdfData: arrayBuffer,
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title,
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fontSize,
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fontFamily,
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addBookmark,
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cpdfUrl: cpdfUrl + 'coherentpdf.browser.min.js',
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},
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[arrayBuffer]
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);
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});
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const bytes = new Uint8Array(resultBytes);
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const document = await PDFDocument.load(bytes);
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return {
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type: 'pdf',
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document,
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bytes,
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filename: input.filename.replace(/\.pdf$/i, '_toc.pdf'),
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};
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}),
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};
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}
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}
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