From 68890a8b473e69b951caf648f546151484c6c9f6 Mon Sep 17 00:00:00 2001
From: Valery Buchinsky <djmute@abv.bg>
Date: Sat, 4 Nov 2023 00:23:29 +0200
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=20[examples]=20placeholder-pdf-lib?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 packages/examples/src/pdf-lib.js | 45 ++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 packages/examples/src/pdf-lib.js

diff --git a/packages/examples/src/pdf-lib.js b/packages/examples/src/pdf-lib.js
new file mode 100644
index 00000000..7b0e0d24
--- /dev/null
+++ b/packages/examples/src/pdf-lib.js
@@ -0,0 +1,45 @@
+var fs = require('fs');
+var path = require('path');
+var PDFDocument = require('pdf-lib').PDFDocument;
+var pdflibAddPlaceholder = require('@signpdf/placeholder-pdf-lib').pdflibAddPlaceholder;
+var signpdf = require('@signpdf/signpdf').default;
+var P12Signer = require('@signpdf/signer-p12').P12Signer;
+
+function work() {
+    // contributing.pdf is the file that is going to be signed
+    var sourcePath = path.join(__dirname, '/../../../resources/contributing.pdf');
+    var pdfBuffer = fs.readFileSync(sourcePath);
+    
+    // certificate.p12 is the certificate that is going to be used to sign
+    var certificatePath = path.join(__dirname, '/../../../resources/certificate.p12');
+    var certificateBuffer = fs.readFileSync(certificatePath);
+    var signer = new P12Signer(certificateBuffer);
+
+    // Load the document into PDF-LIB
+    PDFDocument.load(pdfBuffer).then(function (pdfDoc) {
+        // Add a placeholder for a signature.
+        pdflibAddPlaceholder({
+            pdfDoc: pdfDoc,
+            reason: 'The user is decalaring consent through JavaScript.',
+            contactInfo: 'signpdf@example.com',
+            name: 'John Doe',
+            location: 'Free Text Str., Free World',
+        });
+
+        // Convert the PDF-LIB PDFDocument to Buffer
+        pdfDoc.save({useObjectStreams: false}).then(function (pdfBytes) {
+            var pdfWithPlaceholder = Buffer.from(pdfBytes);
+
+            // And finally sign the document.
+            signpdf
+                .sign(pdfWithPlaceholder, signer)
+                .then(function (signedPdf) {
+                    // signedPdf is a Buffer of an electronically signed PDF. Store it.
+                    var targetPath = path.join(__dirname, '/../output/pdf-lib.pdf');
+                    fs.writeFileSync(targetPath, signedPdf);
+                })
+        })
+    })
+}
+
+work();
\ No newline at end of file