fix(emails): Intercept SMTP to Resend to try with REST API instead

Better debugging Resend email errors

Author: leomp12

packages/emails/src/providers/smtp/index.ts

@@ -7,6 +7,7 @@ import type {
 } from '../../../types/index';
 import type SMTPTransport from 'nodemailer/lib/smtp-transport';
 import nodemailer from 'nodemailer';
+import axios from 'axios';
 import parseTemplateToHtml from '../../parse-template-to-html';
 
 const parseEmailAddrs = (emails: EmailAdrress | EmailAdrress[]) => {
@@ -79,6 +80,31 @@ const sendEmail = async (
   if (!transporter && smtpConfig) {
     setConfigSmtp(smtpConfig);
   }
+  if (smtpConfig?.host === 'smtp.resend.com') {
+    try {
+      const { data } = await axios.post(
+        'https://api.resend.io/v1/email/send',
+        {
+          ...mailOptions,
+          replyTo: undefined,
+          reply_to: emailHeaders.replyTo,
+        },
+        {
+          headers: { Authorization: `Bearer ${smtpConfig.auth.pass}` },
+        },
+      );
+      return { status: 202, message: `emailId: #${data.id}` };
+    } catch (err: any) {
+      if (err.response) {
+        const error: any = new Error('Error sending email with Resend API');
+        error.request = err.config;
+        error.status = err.response.status;
+        error.response = err.response.data;
+        throw new Error(error);
+      }
+      throw err;
+    }
+  }
   if (transporter) {
     const info = await transporter.sendMail(mailOptions);
     return { status: 202, message: `messageId: #${info.messageId}` };

packages/emails/types/index.d.ts

@@ -4,7 +4,7 @@ import { DataEmailSendGrid } from './sendgrid'
 type EmailAdrress = {
   name: string,
   email: string,
-}
+};
 
 type EmailHeaders = {
   from: EmailAdrress,
@@ -14,9 +14,9 @@ type EmailHeaders = {
   sender?: EmailAdrress,
   replyTo?: EmailAdrress | EmailAdrress[]
   bcc?: EmailAdrress[],
-}
+};
 
-type TemplateData = { [key: string]: any }
+type TemplateData = { [key: string]: any };
 
 // TODO: in the future the template can be an object, to accept other types of template besides EJS
 type Template = string
@@ -32,46 +32,18 @@ type EmailConfig = {
   templateData?: TemplateData,
   templateId?: string,
   template?: string,
-}
+};
 
 // https://nodemailer.com/smtp/oauth2/
-
-type SmtpAuth = {
-  user: string,
-  pass: string,
-}
-
-type SmtpAuthToken = {
-  type: 'OAuth2',
-  user: string,
-  accessToken: string,
-}
-
-type SmtpAuth3LO = {
-  type: 'OAuth2',
-  user: string,
-  clientId: string,
-  clientSecret: string,
-  refreshToken: string,
-  accessToken: string,
-  expires: number,
-}
-
-type SmtpAuth2LO = {
-  type: 'OAuth2',
-  user: string,
-  serviceClient: string,
-  privateKey?: string,
-  accessToken: string,
-  expires: number,
-}
-
 type SmtpConfig = {
   host: string,
   port: number,
   secure: boolean,
-  auth: SmtpAuth | SmtpAuthToken | SmtpAuth2LO | SmtpAuth3LO
-}
+  auth: {
+    user: string,
+    pass: string,
+  },
+};
 
 export type {
   EmailAdrress,