const nodemailer = require('nodemailer');
const fs = require('fs');
const path = require('path');
/**
* Sends a premium custom email with the PDF attachment.
* @param {string} toEmail - The recipient's email address
* @param {Object} orderData - The Shopify order payload
* @param {Buffer} pdfBuffer - The PDF data buffer
*/
const sendEmailWithAttachment = async (toEmail, orderData, pdfBuffer) => {
const transporter = nodemailer.createTransport({
host: process.env.SMTP_HOST,
port: Number(process.env.SMTP_PORT) || 465,
secure: process.env.SMTP_SECURE === 'true',
auth: {
user: process.env.SMTP_USER,
pass: process.env.SMTP_PASS,
},
tls: {
rejectUnauthorized: false
}
});
const orderNumber = orderData.order_number || orderData.name;
const currencySymbol = orderData.currency === 'INR' ? 'Rs. ' : `${orderData.currency} `;
// Load logo as base64 so it always displays in Gmail (no external URL blocking)
const localLogoPath = path.join(__dirname, 'logo.png');
let logoBase64 = '';
let logoMimeType = 'image/png';
if (fs.existsSync(localLogoPath)) {
logoBase64 = fs.readFileSync(localLogoPath).toString('base64');
}
// --- 1. Generate Order Summary Rows HTML ---
let orderRowsHtml = '';
if (orderData.line_items && orderData.line_items.length > 0) {
orderData.line_items.forEach(item => {
// Shopify stores product image under item.image (object with src) or item.featured_image.url
const itemImageUrl = (item.image && item.image.src)
|| (item.image && typeof item.image === 'string' ? item.image : '')
|| (item.featured_image && item.featured_image.url)
|| '';
const imageHtml = itemImageUrl
? `
| `
: `
| `;
const variantText = item.variant_title ? `${item.variant_title}` : '';
const itemTotal = (parseFloat(item.price) * item.quantity).toFixed(2);
orderRowsHtml += `
${imageHtml}
|
${item.title || item.name} × ${item.quantity}
${variantText}
|
${currencySymbol}${itemTotal}
|
`;
});
}
// --- 2. Calculate Totals ---
const subtotal = parseFloat(orderData.subtotal_price).toFixed(2);
const shipping = parseFloat(orderData.total_shipping_price_set?.shop_money?.amount || 0).toFixed(2);
const taxes = parseFloat(orderData.total_tax || 0).toFixed(2);
const total = parseFloat(orderData.total_price).toFixed(2);
let taxRow = '';
if (parseFloat(taxes) > 0) {
taxRow = `
| Taxes |
${currencySymbol}${taxes} |
`;
}
// --- 3. Billing Address Details HTML ---
const billing = orderData.billing_address || {};
let billingAddressHtml = '';
if (billing.first_name || billing.last_name) {
billingAddressHtml += `${billing.first_name || ''} ${billing.last_name || ''}
`;
}
if (billing.address1) billingAddressHtml += `${billing.address1}
`;
if (billing.address2) billingAddressHtml += `${billing.address2}
`;
if (billing.city || billing.province || billing.zip) {
billingAddressHtml += `${billing.city || ''} ${billing.province || ''} ${billing.zip || ''}
`;
}
if (billing.country) billingAddressHtml += `${billing.country}
`;
if (billing.phone || orderData.phone) {
billingAddressHtml += `${billing.phone || orderData.phone}`;
}
const paymentMethod = orderData.gateway || 'Request Quote';
const shippingMethod = orderData.shipping_lines?.[0]?.title || 'Economy';
// --- 4. Beautiful Responsive HTML Template ---
const htmlTemplate = `
Order Confirmation
|
Order #${orderNumber}
|
|
Thank you for your order!
We're getting your order ready to be shipped. We have attached your custom PDF invoice directly to this email.
|
${orderData.order_status_url ? `
|
View your order
or Visit our store
|
` : ''}
Order summary
|
|
|
| Subtotal |
${currencySymbol}${subtotal} |
| Shipping |
${currencySymbol}${shipping} |
${taxRow}
| Total |
${currencySymbol}${total} ${orderData.currency}
|
|
Customer information
|
|
Billing address
${billingAddressHtml}
|
Payment method
${paymentMethod}
Shipping method
${shippingMethod}
|
|
|
`;
const mailOptions = {
from: `"${process.env.SHOP_NAME || 'Your Store'}" <${process.env.SMTP_FROM_EMAIL}>`,
to: toEmail,
subject: `Invoice for your order #${orderNumber}`,
text: `Thank you for your order! Attached is the invoice for order #${orderNumber}.`,
html: htmlTemplate,
attachments: [
{
filename: `Invoice_${orderNumber}.pdf`,
content: pdfBuffer,
contentType: 'application/pdf'
}
]
};
try {
const info = await transporter.sendMail(mailOptions);
console.log(`Email sent: ${info.messageId}`);
return info;
} catch (error) {
console.error('Error sending email:', error);
throw error;
}
};
module.exports = { sendEmailWithAttachment };