refactor: move barcode generation to document server

src/routes/email.ts

@@ -5,7 +5,6 @@ import { z } from 'zod'
 import { EmailService } from '../services/email'
 import { getEmailTemplate } from '../templates'
 import { Language } from '../types'
-import { toBuffer } from 'bwip-js/node'
 
 const emailRouter = new Hono()
 const emailService = new EmailService()
@@ -18,20 +17,7 @@ const sendEmailSchema = z.object({
 })
 
 async function generateBarcodeDataURL(data) {
-  return `https://barcodeapi.org/api/128/${data}`
-  const buffer = await toBuffer({
-    bcid: 'code128',
-    text: data,
-    scale: 3,
-    height: 10,
-    includetext: true,
-    textxalign: 'center',
-  });
-
-  const base64Data = buffer.toString('base64');
-  const dataURL = `data:image/png;base64,${base64Data}`;
-
-  return dataURL;
+  return `${process.env.DOCUMENT_SERVER_URL}/v1/barcodes/code128/${data}`
 }
 
 emailRouter.post('/', bearerAuth({ token: process.env.AUTHKEY }), zValidator('json', sendEmailSchema), async (c) => {