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fix: handle signature annotations

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This commit is contained in:
Mythie
2024-03-03 11:36:28 +11:00
parent 73aae6f1e3
commit a17d4a2a39
2 changed files with 40 additions and 3 deletions
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27
packages/lib/server-only/document/seal-document.ts
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@ -2,7 +2,7 @@
import { nanoid } from 'nanoid';
import path from 'node:path';
import { PDFDocument } from 'pdf-lib';
import { PDFDocument, PDFSignature, rectangle } from 'pdf-lib';
import PostHogServerClient from '@documenso/lib/server-only/feature-flags/get-post-hog-server-client';
import { DOCUMENT_AUDIT_LOG_TYPE } from '@documenso/lib/types/document-audit-logs';
@ -91,8 +91,31 @@ export const sealDocument = async ({
const doc = await PDFDocument.load(pdfData);
const form = doc.getForm();
// Remove old signatures
for (const field of form.getFields()) {
if (field instanceof PDFSignature) {
field.acroField.getWidgets().forEach((widget) => {
widget.ensureAP();
try {
widget.getNormalAppearance();
} catch (e) {
const { context } = widget.dict;
const xobj = context.formXObject([rectangle(0, 0, 0, 0)]);
const streamRef = context.register(xobj);
widget.setNormalAppearance(streamRef);
}
});
}
}
// Flatten the form to stop annotation layers from appearing above documenso fields
doc.getForm().flatten();
form.flatten();
for (const field of fields) {
await insertFieldInPDF(doc, field);