feat: add trpc route to send emails

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

@@ -0,0 +1,39 @@
+import nodemailer from 'nodemailer';
+import nodemailerSendgrid from 'nodemailer-sendgrid';
+
+export const sendMail = async ({ email }: { email: string }) => {
+  let transporter;
+
+  if (process.env.NEXT_PRIVATE_SENDGRID_API_KEY) {
+    transporter = nodemailer.createTransport(
+      nodemailerSendgrid({
+        apiKey: process.env.NEXT_PRIVATE_SENDGRID_API_KEY,
+      }),
+    );
+  }
+
+  if (process.env.NEXT_PRIVATE_SMTP_MAIL_HOST) {
+    transporter = nodemailer.createTransport({
+      host: process.env.NEXT_PRIVATE_SMTP_MAIL_HOST,
+      port: Number(process.env.NEXT_PRIVATE_SMTP_MAIL_PORT),
+      auth: {
+        user: process.env.NEXT_PRIVATE_SMTP_MAIL_USER,
+        pass: process.env.NEXT_PRIVATE_SMTP_MAIL_PASSWORD,
+      },
+    });
+  }
+
+  if (!transporter) {
+    throw new Error(
+      'No mail transport configured. Probably Sendgrid API Key nor SMTP Mail host was set',
+    );
+  }
+
+  await transporter.sendMail({
+    from: 'Documenso <hi@documenso.com>',
+    to: email,
+    subject: 'Welcome to Documenso!',
+    text: 'Welcome to Documenso!',
+    html: '<p>Welcome to Documenso!</p>',
+  });
+};

packages/trpc/server/document-router/router.ts

@@ -0,0 +1,26 @@
+import { TRPCError } from '@trpc/server';
+
+import { sendMail } from '@documenso/lib/server-only/document/send-document';
+
+import { authenticatedProcedure, router } from '../trpc';
+import { ZSendMailMutationSchema } from './schema';
+
+export const documentRouter = router({
+  sendEmail: authenticatedProcedure
+    .input(ZSendMailMutationSchema)
+    .mutation(async ({ input, ctx }) => {
+      try {
+        const { email } = input;
+
+        console.log('Send Mail Context', ctx);
+        return await sendMail({ email });
+      } catch (err) {
+        console.error(err);
+
+        throw new TRPCError({
+          code: 'BAD_REQUEST',
+          message: 'We were unable to send an email.',
+        });
+      }
+    }),
+});

packages/trpc/server/document-router/schema.ts

@@ -0,0 +1,7 @@
+import { z } from 'zod';
+
+export const ZSendMailMutationSchema = z.object({
+  email: z.string().min(1).email(),
+});
+
+export type TSendMailMutationSchema = z.infer<typeof ZSendMailMutationSchema>;

packages/trpc/server/router.ts

@@ -1,4 +1,5 @@
 import { authRouter } from './auth-router/router';
+import { documentRouter } from './document-router/router';
 import { profileRouter } from './profile-router/router';
 import { procedure, router } from './trpc';
 
@@ -6,6 +7,7 @@ export const appRouter = router({
   hello: procedure.query(() => 'Hello, world!'),
   auth: authRouter,
   profile: profileRouter,
+  document: documentRouter,
 });
 
 export type AppRouter = typeof appRouter;