try to commit

services/email.service.js

@@ -1,35 +1,66 @@
 /***********************************************************************************************************************************************************************
  * File Name: email.service.js
  * Type of Program: Service
- * Description: Nodemailer-based email service.
+ * Description: Gmail API-based email service (HTTPS, gmail.googleapis.com).
+ *              Render blocks outbound raw SMTP (ports 25/465/587), so nodemailer's
+ *              SMTP transport to smtp.gmail.com can never connect from this host —
+ *              every send failed with nodemailer's own "Connection timeout" after
+ *              its 2-minute connectionTimeout expired. Sending over the Gmail REST
+ *              API instead rides on HTTPS/443, which isn't blocked.
+ *              Auth is OAuth2 with a long-lived refresh token for services.philpro@gmail.com
+ *              (see scripts/get_gmail_refresh_token.js to mint one), reusing the same
+ *              GOOGLE_CLIENT_ID/GOOGLE_CLIENT_SECRET already registered for Google login.
  *              Subject + body per type are hardcoded in data/email_body.data.js —
  *              there is no admin UI or DB table. To add or change an email,
  *              edit that file directly and redeploy.
  * Author: rgrgogu, Kenneth Obsequio (@lash0000)
  * Date Created: Oct. 6, 2025
+ * Date Modified: Jul. 14, 2026 — Replaced nodemailer/SMTP with Gmail API over HTTPS;
+ *                                 SMTP was silently black-holed by Render's network. (Kenneth Obsequio)
  ***********************************************************************************************************************************************************************
  * HOW TO USE:
  *   const emailService = require('../services/email.service');
  *   await emailService.sendEmail({ to: user.email, type: 'OTP', data: { otp } });
  ***********************************************************************************************************************************************************************/
-const nodemailer = require('nodemailer');
+const axios = require('axios');
+const { OAuth2Client } = require('google-auth-library');
 const { emailTemplates } = require('../data/email_body.data');
 
-const port = Number(process.env.SMTP_PORT);
+const GMAIL_SEND_URL    = 'https://gmail.googleapis.com/gmail/v1/users/me/messages/send';
+const GMAIL_PROFILE_URL = 'https://gmail.googleapis.com/gmail/v1/users/me/profile';
 
-const transporter = nodemailer.createTransport({
-  host:        process.env.SMTP_HOST,
-  port,
-  secure:      port === 465,
-  requireTLS:  port === 587,
-  auth: {
-    user: process.env.SMTP_USER,
-    pass: process.env.SMTP_PASS,
-  },
-  tls: {
-    rejectUnauthorized: false,
-  },
-});
+// Lazily initialised so the module can be required before env is loaded.
+let _oauth2Client;
+const getOAuth2Client = () => {
+  if (!_oauth2Client) {
+    _oauth2Client = new OAuth2Client(process.env.GOOGLE_CLIENT_ID, process.env.GOOGLE_CLIENT_SECRET);
+    _oauth2Client.setCredentials({ refresh_token: process.env.GMAIL_REFRESH_TOKEN });
+  }
+  return _oauth2Client;
+};
+
+const getAccessToken = async () => {
+  const { token } = await getOAuth2Client().getAccessToken();
+  if (!token) throw new Error('Failed to obtain Gmail access token');
+  return token;
+};
+
+// Encodes a MIME header value so non-ASCII subjects survive transit (RFC 2047).
+const encodeHeader = (value) => `=?UTF-8?B?${Buffer.from(value, 'utf-8').toString('base64')}?=`;
+
+const buildRawMessage = ({ to, subject, html }) => {
+  const message = [
+    `From: "STARR System" <${process.env.EMAIL_FROM}>`,
+    `To: ${to}`,
+    `Subject: ${encodeHeader(subject)}`,
+    'MIME-Version: 1.0',
+    'Content-Type: text/html; charset=UTF-8',
+    '',
+    html,
+  ].join('\r\n');
+
+  return Buffer.from(message).toString('base64url');
+};
 
 const sendEmail = async ({ to, type, data = {} }) => {
   try {
@@ -40,29 +71,24 @@ const sendEmail = async ({ to, type, data = {} }) => {
     }
 
     const { subject, html } = templateFn(data);
+    const accessToken       = await getAccessToken();
 
-    return await new Promise((resolve, reject) => {
-      transporter.sendMail(
-        {
-          from: {
-            name: "STARR System",
-            address: process.env.EMAIL_FROM,
-          },
-          to,
-          subject,
-          html,
-        },
-        (err, info) => {
-          if (err) return reject(err);
-          resolve(info);
-        }
-      );
-    });
+    const { data: result } = await axios.post(
+      GMAIL_SEND_URL,
+      { raw: buildRawMessage({ to, subject, html }) },
+      { headers: { Authorization: `Bearer ${accessToken}` } },
+    );
+
+    return result;
   } catch (err) {
-    throw new Error(err.message);
+    throw new Error(err.response?.data?.error?.message || err.message);
   }
 };
 
-const ping = () => transporter.verify();
+// Confirms the refresh token is valid and the Gmail API is reachable.
+const ping = async () => {
+  const accessToken = await getAccessToken();
+  await axios.get(GMAIL_PROFILE_URL, { headers: { Authorization: `Bearer ${accessToken}` } });
+};
 
 module.exports = { sendEmail, ping };