mirror of
https://github.com/documenso/documenso
synced 2026-04-21 21:37:18 +00:00
d18dcb4d60
This PR introduces automatic detection and placement of fields and
recipients based on PDF placeholders.
The placeholders have the following structure:
- `{{fieldType,recipientPosition,fieldMeta}}`
- `{{text,r1,required=true,textAlign=right,fontSize=50}}`
When the user uploads a PDF document containing such placeholders, they
get converted automatically to Documenso fields and assigned to
recipients.
34 lines
854 B
TypeScript
34 lines
854 B
TypeScript
import { PDF } from '@libpdf/core';
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import { AppError } from '../../errors/app-error';
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export const normalizePdf = async (pdf: Buffer, options: { flattenForm?: boolean } = {}) => {
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const shouldFlattenForm = options.flattenForm ?? true;
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const pdfDoc = await PDF.load(pdf).catch((e) => {
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console.error(`PDF normalization error: ${e.message}`);
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throw new AppError('INVALID_DOCUMENT_FILE', {
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message: 'The document is not a valid PDF',
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});
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});
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if (pdfDoc.isEncrypted) {
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throw new AppError('INVALID_DOCUMENT_FILE', {
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message: 'The document is encrypted',
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});
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}
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pdfDoc.flattenLayers();
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const form = pdfDoc.getForm();
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if (shouldFlattenForm && form) {
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form.flatten();
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pdfDoc.flattenAnnotations();
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}
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const normalizedPdfBytes = await pdfDoc.save();
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return Buffer.from(normalizedPdfBytes);
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};
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