Initial commit

server/utils/apiResponse.js

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+/**
+ * Standardized API Response helper functions
+ */
+const successResponse = (res, message = 'Success', data = {}, statusCode = 200) => {
+  return res.status(statusCode).json({
+    success: true,
+    message,
+    data
+  });
+};
+
+const errorResponse = (res, message = 'Internal Server Error', errors = [], statusCode = 500) => {
+  return res.status(statusCode).json({
+    success: false,
+    message,
+    errors: Array.isArray(errors) ? errors : [errors]
+  });
+};
+
+module.exports = {
+  successResponse,
+  errorResponse
+};
+

server/utils/emailSender.js

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+const nodemailer = require('nodemailer');
+const EmailTemplate = require('../models/EmailTemplate');
+
+const sendEmail = async ({ templateName, to, variables = {} }) => {
+  try {
+    const template = await EmailTemplate.findOne({ name: templateName });
+    let subject = variables.subject || 'Antigravity Guitars Update';
+    let htmlContent = `<p>Thank you for contacting Antigravity Guitars!</p>`;
+
+    if (template) {
+      subject = template.subject;
+      htmlContent = template.bodyHtml;
+
+      // Replace placeholders e.g. {{customerName}} -> variables.customerName
+      Object.keys(variables).forEach((key) => {
+        const regex = new RegExp(`{{${key}}}`, 'g');
+        subject = subject.replace(regex, variables[key] || '');
+        htmlContent = htmlContent.replace(regex, variables[key] || '');
+      });
+    }
+
+    const transporter = nodemailer.createTransport({
+      host: process.env.EMAIL_HOST || 'smtp.mailtrap.io',
+      port: process.env.EMAIL_PORT || 2525,
+      auth: {
+        user: process.env.EMAIL_USER || '',
+        pass: process.env.EMAIL_PASS || ''
+      }
+    });
+
+    const mailOptions = {
+      from: process.env.EMAIL_FROM || '"Antigravity Guitars" <noreply@guitars.com>',
+      to,
+      subject,
+      html: htmlContent
+    };
+
+    if (process.env.NODE_ENV !== 'test' && process.env.EMAIL_USER) {
+      await transporter.sendMail(mailOptions);
+      console.log(`[Email Sent]: Template "${templateName}" to ${to}`);
+    } else {
+      console.log(`[Email Logged (Mock)] To: ${to} | Subject: ${subject}`);
+    }
+    return true;
+  } catch (error) {
+    console.error(`[Email Sender Exception]: ${error.message}`);
+    return false;
+  }
+};
+
+module.exports = { sendEmail };
+

server/utils/jwt.js

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+const jwt = require('jsonwebtoken');
+
+const generateToken = (userId, role) => {
+  return jwt.sign(
+    { id: userId, role },
+    process.env.JWT_SECRET || 'guitar_ecommerce_super_secret_jwt_key_2026',
+    { expiresIn: process.env.JWT_EXPIRE || '30d' }
+  );
+};
+
+module.exports = { generateToken };
+