Antonio Ledebuhr
e63b4edade
The script now repairs metadata independently of the annotation, and a repeat run leaves the bytes untouched. Co-authored-by: Cursor <cursoragent@cursor.com>
124 lines
3.3 KiB
JavaScript
124 lines
3.3 KiB
JavaScript
import { readFileSync, writeFileSync } from 'node:fs';
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import { dirname, join } from 'node:path';
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import { fileURLToPath } from 'node:url';
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import { PDFDocument, PDFName, PDFString, rgb, StandardFonts } from 'pdf-lib';
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const ROOT = join(dirname(fileURLToPath(import.meta.url)), '..');
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const CV_PATH = join(ROOT, 'CV.pdf');
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const PITCH_URI = 'https://antoniolede.de/pitch';
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const VISIBLE_TEXT = 'antoniolede.de/pitch';
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const TEXT_X = 59.6;
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const TEXT_Y = 215.4;
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const FONT_SIZE = 10.5;
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const PADDING = 2;
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const ORIGINAL_TITLE = 'CV';
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const ORIGINAL_CREATOR = 'Pages';
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// Producer from the unmodified Pages/Quartz export of CV.pdf.
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const ORIGINAL_PRODUCER = 'macOS Version 26.5.2 (Build 25F84) Quartz PDFContext';
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function asString(value) {
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if (!value) {
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return '';
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}
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if (typeof value.decodeText === 'function') {
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return value.decodeText();
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}
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return String(value);
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}
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function annotationUri(annotation) {
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const action = annotation.lookup(PDFName.of('A'));
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if (!action || typeof action.lookup !== 'function') {
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return '';
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}
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const uri = action.lookup(PDFName.of('URI'));
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return asString(uri);
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}
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function pageHasPitchLink(page) {
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const annots = page.node.lookup(PDFName.of('Annots'));
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if (!annots || typeof annots.size !== 'function') {
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return false;
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}
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for (let index = 0; index < annots.size(); index += 1) {
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const annotation = annots.lookup(index);
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if (annotationUri(annotation) === PITCH_URI) {
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return true;
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}
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}
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return false;
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}
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function hasOriginalMetadata(pdfDoc) {
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return (
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pdfDoc.getTitle() === ORIGINAL_TITLE &&
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pdfDoc.getCreator() === ORIGINAL_CREATOR &&
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pdfDoc.getProducer() === ORIGINAL_PRODUCER
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);
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}
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const bytes = readFileSync(CV_PATH);
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const pdfDoc = await PDFDocument.load(bytes, { updateMetadata: false });
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const page = pdfDoc.getPage(0);
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const needsLink = !pageHasPitchLink(page);
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const needsMetadata = !hasOriginalMetadata(pdfDoc);
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if (!needsLink && !needsMetadata) {
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console.log('Pitch link and original metadata already present; leaving CV.pdf unchanged.');
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process.exit(0);
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}
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if (needsLink) {
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const font = await pdfDoc.embedFont(StandardFonts.Helvetica);
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const textWidth = font.widthOfTextAtSize(VISIBLE_TEXT, FONT_SIZE);
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page.drawText(VISIBLE_TEXT, {
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x: TEXT_X,
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y: TEXT_Y,
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size: FONT_SIZE,
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font,
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color: rgb(54 / 255, 125 / 255, 162 / 255),
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});
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const link = pdfDoc.context.register(
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pdfDoc.context.obj({
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Type: 'Annot',
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Subtype: 'Link',
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Rect: [
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TEXT_X - PADDING,
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TEXT_Y - PADDING,
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TEXT_X + textWidth + PADDING,
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TEXT_Y + FONT_SIZE + PADDING,
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],
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Border: [0, 0, 0],
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A: {
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S: 'URI',
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URI: PDFString.of(PITCH_URI),
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},
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}),
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);
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page.node.addAnnot(link);
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}
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if (needsMetadata) {
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pdfDoc.setTitle(ORIGINAL_TITLE);
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pdfDoc.setCreator(ORIGINAL_CREATOR);
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pdfDoc.setProducer(ORIGINAL_PRODUCER);
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}
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const saved = await pdfDoc.save({ useObjectStreams: false });
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writeFileSync(CV_PATH, saved);
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if (needsLink && needsMetadata) {
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console.log('Added the pitch link and restored the original CV.pdf metadata.');
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} else if (needsLink) {
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console.log('Added visible pitch URL and link annotation to page 1 of CV.pdf.');
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} else {
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console.log('Restored the original Title, Creator and Producer on CV.pdf.');
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}
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