feat: send email when recipient is done signing

packages/lib/server-only/document/send-recipient-signed-email.ts

@@ -0,0 +1,36 @@
+import { createElement } from 'react';
+
+import { mailer } from '@documenso/email/mailer';
+import { render } from '@documenso/email/render';
+import { DocumentPendingEmailTemplate } from '@documenso/email/templates/document-pending';
+import { Document, Recipient } from '@documenso/prisma/client';
+
+export interface SendPendingEmailOptions {
+  document: Document;
+  recipient: Recipient;
+}
+
+export const sendPendingEmail = async ({ document, recipient }: SendPendingEmailOptions) => {
+  const { email, name } = recipient;
+
+  const assetBaseUrl = process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost:3000';
+
+  const template = createElement(DocumentPendingEmailTemplate, {
+    documentName: document.title,
+    assetBaseUrl,
+  });
+
+  await mailer.sendMail({
+    to: {
+      address: email,
+      name,
+    },
+    from: {
+      name: process.env.NEXT_PRIVATE_SMTP_FROM_NAME || 'Documenso',
+      address: process.env.NEXT_PRIVATE_SMTP_FROM_ADDRESS || 'noreply@documenso.com',
+    },
+    subject: 'You are done signing.',
+    html: render(template),
+    text: render(template, { plainText: true }),
+  });
+};