fix: use noto sans for text insertion on pdfs

Use Noto Sans to gracefully handle inserting custom text
on PDF's. Previously we were using Helvetica which is a
standard PDF font but that would fail for any character
that couldn't be encoded in WinANSI.

Noto Sans was chosen as it has support for a large number
of languages and glyphs with challenges now being adding
support for CJK glyphs.

apps/marketing/next.config.js

@@ -18,6 +18,10 @@ const FONT_CAVEAT_BYTES = fs.readFileSync(
   path.join(__dirname, '../../packages/assets/fonts/caveat.ttf'),
 );
 
+const FONT_NOTO_SANS_BYTES = fs.readFileSync(
+  path.join(__dirname, '../../packages/assets/fonts/noto-sans.ttf'),
+);
+
 /** @type {import('next').NextConfig} */
 const config = {
   experimental: {
@@ -38,6 +42,7 @@ const config = {
   env: {
     NEXT_PUBLIC_PROJECT: 'marketing',
     FONT_CAVEAT_URI: `data:font/ttf;base64,${FONT_CAVEAT_BYTES.toString('base64')}`,
+    FONT_NOTO_SANS_URI: `data:font/ttf;base64,${FONT_NOTO_SANS_BYTES.toString('base64')}`,
   },
   modularizeImports: {
     'lucide-react': {

apps/web/next.config.js

@@ -18,6 +18,10 @@ const FONT_CAVEAT_BYTES = fs.readFileSync(
   path.join(__dirname, '../../packages/assets/fonts/caveat.ttf'),
 );
 
+const FONT_NOTO_SANS_BYTES = fs.readFileSync(
+  path.join(__dirname, '../../packages/assets/fonts/noto-sans.ttf'),
+);
+
 /** @type {import('next').NextConfig} */
 const config = {
   output: process.env.DOCKER_OUTPUT ? 'standalone' : undefined,
@@ -42,6 +46,7 @@ const config = {
     APP_VERSION: version,
     NEXT_PUBLIC_PROJECT: 'web',
     FONT_CAVEAT_URI: `data:font/ttf;base64,${FONT_CAVEAT_BYTES.toString('base64')}`,
+    FONT_NOTO_SANS_URI: `data:font/ttf;base64,${FONT_NOTO_SANS_BYTES.toString('base64')}`,
   },
   modularizeImports: {
     'lucide-react': {

packages/lib/constants/pdf.ts

@@ -1,6 +1,6 @@
 import { APP_BASE_URL } from './app';
 
-export const DEFAULT_STANDARD_FONT_SIZE = 15;
+export const DEFAULT_STANDARD_FONT_SIZE = 12;
 export const DEFAULT_HANDWRITING_FONT_SIZE = 50;
 
 export const MIN_STANDARD_FONT_SIZE = 8;

packages/lib/server-only/pdf/insert-field-in-pdf.ts

@@ -1,6 +1,6 @@
 // https://github.com/Hopding/pdf-lib/issues/20#issuecomment-412852821
 import fontkit from '@pdf-lib/fontkit';
-import { PDFDocument, StandardFonts } from 'pdf-lib';
+import { PDFDocument } from 'pdf-lib';
 
 import {
   DEFAULT_HANDWRITING_FONT_SIZE,
@@ -17,6 +17,10 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
     res.arrayBuffer(),
   );
 
+  const fontUbuntu = await fetch(process.env.FONT_NOTO_SANS_URI).then(async (res) =>
+    res.arrayBuffer(),
+  );
+
   const isSignatureField = isSignatureFieldType(field.type);
 
   pdf.registerFontkit(fontkit);
@@ -41,7 +45,7 @@ export const insertFieldInPDF = async (pdf: PDFDocument, field: FieldWithSignatu
   const fieldX = pageWidth * (Number(field.positionX) / 100);
   const fieldY = pageHeight * (Number(field.positionY) / 100);
 
-  const font = await pdf.embedFont(isSignatureField ? fontCaveat : StandardFonts.Helvetica);
+  const font = await pdf.embedFont(isSignatureField ? fontCaveat : fontUbuntu);
 
   if (field.type === FieldType.SIGNATURE || field.type === FieldType.FREE_SIGNATURE) {
     await pdf.embedFont(fontCaveat);

packages/tsconfig/process-env.d.ts

@@ -73,6 +73,7 @@ declare namespace NodeJS {
 
     DEPLOYMENT_TARGET?: 'webapp' | 'marketing';
     FONT_CAVEAT_URI: string;
+    FONT_NOTO_SANS_URI: string;
 
     POSTGRES_URL?: string;
     DATABASE_URL?: string;

turbo.json

@@ -112,6 +112,7 @@
     "NODE_ENV",
     "DEPLOYMENT_TARGET",
     "FONT_CAVEAT_URI",
+    "FONT_NOTO_SANS_URI",
     "POSTGRES_URL",
     "DATABASE_URL",
     "DATABASE_URL_UNPOOLED",