feat: send email when all recipients have signed

packages/lib/server-only/document/send-completed-email.ts

@@ -0,0 +1,57 @@
+import { createElement } from 'react';
+
+import { mailer } from '@documenso/email/mailer';
+import { render } from '@documenso/email/render';
+import { DocumentCompletedEmailTemplate } from '@documenso/email/templates/document-completed';
+import { prisma } from '@documenso/prisma';
+
+export interface SendDocumentOptions {
+  documentId: number;
+}
+
+export const sendCompletedEmail = async ({ documentId }: SendDocumentOptions) => {
+  const document = await prisma.document.findUnique({
+    where: {
+      id: documentId,
+    },
+    include: {
+      Recipient: true,
+    },
+  });
+
+  if (!document) {
+    throw new Error('Document not found');
+  }
+
+  if (document.Recipient.length === 0) {
+    throw new Error('Document has no recipients');
+  }
+
+  await Promise.all([
+    document.Recipient.map(async (recipient) => {
+      const { email, name } = recipient;
+
+      const assetBaseUrl = process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost:3000';
+
+      const template = createElement(DocumentCompletedEmailTemplate, {
+        documentName: document.title,
+        assetBaseUrl,
+        downloadLink: 'https://documenso.com',
+      });
+
+      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: 'Everyone has signed!',
+        html: render(template),
+        text: render(template, { plainText: true }),
+      });
+    }),
+  ]);
+};