refactor: changing nodemailer for render

Author: EngSteven

backend/package-lock.json

@@ -32,9 +32,9 @@
     "class-transformer": "^0.5.1",
     "class-validator": "^0.15.1",
     "mongoose": "^9.3.3",
-    "nodemailer": "^8.0.4",
     "pg": "^8.20.0",
     "reflect-metadata": "^0.2.2",
+    "resend": "^6.10.0",
     "rxjs": "^7.8.1",
     "typeorm": "^0.3.28"
   },

backend/package.json

@@ -1,60 +1,49 @@
 import { Injectable, InternalServerErrorException } from '@nestjs/common';
-import * as nodemailer from 'nodemailer';
+import { Resend } from 'resend';
 
 @Injectable()
 export class MailService {
-  private transporter: nodemailer.Transporter;
+  private resend: Resend;
 
   constructor() {
-    this.transporter = nodemailer.createTransport({
-      host: 'smtp.gmail.com',
-      port: 587, 
-      secure: false, 
-      requireTLS: true, 
-      auth: {
-        user: process.env.EMAIL_USER,
-        pass: process.env.EMAIL_PASS,
-      },
-    });
-    this.transporter.verify((error, success) => {
-      if (error) {
-        console.error('❌ ERROR CRÍTICO SMTP EN RENDER:', error);
-      } else {
-        console.log('✅ CONEXIÓN SMTP ESTABLECIDA. Listo para enviar correos.');
-      }
-    });
+    // Inicializamos Resend con la llave que pusiste en Render
+    this.resend = new Resend(process.env.RESEND_API_KEY);
   }
 
   async sendPasswordResetEmail(to: string, token: string) {
     const frontendUrl = process.env.FRONTEND_URL || 'http://localhost:5173';
     const resetLink = `${frontendUrl}/reset-password?token=${token}`;
 
-    const mailOptions = {
-      from: `"DevTrack Pro" <${process.env.EMAIL_USER}>`,
-      to: to,
-      subject: 'Password Reset Request - DevTrack Pro',
-      html: `
-        <div style="font-family: Arial, sans-serif; max-w: 600px; margin: 0 auto; padding: 20px; border: 1px solid #e2e8f0; border-radius: 10px;">
-          <h2 style="color: #1e293b; text-align: center;">DevTrack Pro</h2>
-          <p style="color: #475569; font-size: 16px;">Hello,</p>
-          <p style="color: #475569; font-size: 16px;">You recently requested to reset your password. Click the button below to proceed:</p>
-          <div style="text-align: center; margin: 30px 0;">
-            <a href="${resetLink}" style="background-color: #4f46e5; color: white; padding: 12px 24px; text-decoration: none; border-radius: 8px; font-weight: bold; font-size: 16px;">
-              Reset Password
-            </a>
+    try {
+      const { data, error } = await this.resend.emails.send({
+        // IMPORTANTE: En el plan gratis sin dominio propio, debes usar este correo exacto de Resend:
+        from: 'DevTrack Pro <onboarding@resend.dev>', 
+        to: to, // Ojo: en el plan gratis, solo puedes enviar correos a la dirección con la que te registraste en Resend.
+        subject: 'Password Reset Request - DevTrack Pro',
+        html: `
+          <div style="font-family: Arial, sans-serif; max-w: 600px; margin: 0 auto; padding: 20px; border: 1px solid #e2e8f0; border-radius: 10px;">
+            <h2 style="color: #1e293b; text-align: center;">DevTrack Pro</h2>
+            <p style="color: #475569; font-size: 16px;">Hello,</p>
+            <p style="color: #475569; font-size: 16px;">You recently requested to reset your password. Click the button below to proceed:</p>
+            <div style="text-align: center; margin: 30px 0;">
+              <a href="${resetLink}" style="background-color: #4f46e5; color: white; padding: 12px 24px; text-decoration: none; border-radius: 8px; font-weight: bold; font-size: 16px;">
+                Reset Password
+              </a>
+            </div>
+            <p style="color: #475569; font-size: 14px;">If you did not request a password reset, please ignore this email or reply to let us know. This link will expire in 1 hour.</p>
+            <hr style="border: none; border-top: 1px solid #e2e8f0; margin: 20px 0;" />
+            <p style="color: #94a3b8; font-size: 12px; text-align: center;">© 2026 DevTrack Pro. All rights reserved.</p>
           </div>
-          <p style="color: #475569; font-size: 14px;">If you did not request a password reset, please ignore this email or reply to let us know. This link will expire in 1 hour.</p>
-          <hr style="border: none; border-top: 1px solid #e2e8f0; margin: 20px 0;" />
-          <p style="color: #94a3b8; font-size: 12px; text-align: center;">© 2026 DevTrack Pro. All rights reserved.</p>
-        </div>
-      `,
-    };
+        `,
+      });
 
-    try {
-      await this.transporter.sendMail(mailOptions);
-      console.log(`Email sent successfully to ${to}`);
+      if (error) {
+        throw new Error(error.message);
+      }
+
+      console.log(`Email sent via HTTP API to ${to}`);
     } catch (error) {
-      console.error('Error sending email:', error);
+      console.error('Error sending email via Resend:', error);
       throw new InternalServerErrorException('Error sending the reset email');
     }
   }