commit 1b2ee461a6daa6be13d29b1eaafc74743b2af427
Author: Alaguraj0361 <alaguraj0361@gmail.com>
Date:   Mon May 18 22:14:41 2026 +0530

    first commit

diff --git a/.env.example b/.env.example
new file mode 100644
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--- /dev/null
+++ b/.env.example
@@ -0,0 +1,13 @@
+PORT=3000
+
+# Shopify Settings
+SHOPIFY_WEBHOOK_SECRET=your_shopify_webhook_secret
+SHOP_NAME="My Awesome Store"
+
+# SMTP / Email Settings
+SMTP_HOST=smtp.gmail.com
+SMTP_PORT=587
+SMTP_SECURE=false
+SMTP_USER=your_email@gmail.com
+SMTP_PASS=your_email_password_or_app_password
+SMTP_FROM_EMAIL=your_email@gmail.com
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7de949e
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+node_modules/
+.env
+webhook.log
+test-email.js
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..83efd4b
--- /dev/null
+++ b/README.md
@@ -0,0 +1,53 @@
+# Shopify Invoice Email Plugin
+
+This is a custom Node.js Express server that listens for Shopify `orders/create` webhooks. When an order is created, it dynamically generates a PDF invoice and sends an email to the customer with the PDF attached.
+
+## Prerequisites
+
+- Node.js (v14 or higher)
+- A Shopify Store
+- An Email Account (e.g., Gmail, SendGrid) to send emails via SMTP.
+
+## Setup
+
+1. **Install Dependencies**
+   Navigate to the directory and run:
+   ```bash
+   npm install
+   ```
+
+2. **Environment Variables**
+   Copy `.env.example` to a new file named `.env`:
+   ```bash
+   cp .env.example .env
+   ```
+   Fill in your configuration in the `.env` file:
+   - `SHOPIFY_WEBHOOK_SECRET`: The webhook secret key from your Shopify Admin panel.
+   - `SMTP_*`: Your email provider's SMTP settings. (If using Gmail, use an App Password).
+
+3. **Start the Server**
+   ```bash
+   node server.js
+   ```
+
+## Shopify Configuration
+
+1. Log in to your Shopify Admin.
+2. Go to **Settings** > **Notifications**.
+3. Scroll down to **Webhooks** and click **Create webhook**.
+4. Set the **Event** to `Order creation`.
+5. Set the **Format** to `JSON`.
+6. Set the **URL** to your server's endpoint (e.g., `https://your-domain.com/webhooks/orders/create`).
+   *(Note: You will need a tool like ngrok to test locally).*
+7. Set the **Webhook API version** to the latest version.
+8. Save the webhook.
+
+At the bottom of the Webhooks section in Shopify, you'll see a message saying "All your webhooks will be signed with xxx...". Use that secret string as your `SHOPIFY_WEBHOOK_SECRET` in the `.env` file.
+
+## Testing Locally
+
+If you are developing locally, you can use `ngrok` to expose your local port 3000 to the internet:
+```bash
+ngrok http 3000
+```
+Use the `https` ngrok URL in your Shopify webhook configuration.
diff --git a/mailer.js b/mailer.js
new file mode 100644
index 0000000..6bd22ae
--- /dev/null
+++ b/mailer.js
@@ -0,0 +1,50 @@
+const nodemailer = require('nodemailer');
+
+/**
+ * Sends an email with the PDF attachment.
+ * @param {string} toEmail - The recipient's email address
+ * @param {string|number} orderNumber - The Shopify order number
+ * @param {Buffer} pdfBuffer - The PDF data buffer
+ */
+const sendEmailWithAttachment = async (toEmail, orderNumber, pdfBuffer) => {
+    // Create a transporter using your email service credentials
+    // You can configure SMTP, SendGrid, Amazon SES, etc.
+    const transporter = nodemailer.createTransport({
+        host: process.env.SMTP_HOST,
+        port: Number(process.env.SMTP_PORT) || 465,
+        secure: process.env.SMTP_SECURE === 'true', // true for 465, false for other ports
+        auth: {
+            user: process.env.SMTP_USER,
+            pass: process.env.SMTP_PASS,
+        },
+        tls: {
+            rejectUnauthorized: false
+        }
+    });
+
+    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: `<p>Thank you for your order!</p><p>Attached is the invoice for order <b>#${orderNumber}</b>.</p>`,
+        attachments: [
+            {
+                filename: `Invoice_${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 };
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..7bbe1f8
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1082 @@
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+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..ca16b08
--- /dev/null
+++ b/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "invoice-email-plugin",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "crypto": "^1.0.1",
+    "dotenv": "^17.4.2",
+    "express": "^5.2.1",
+    "nodemailer": "^8.0.7",
+    "pdfkit": "^0.18.0"
+  }
+}
diff --git a/pdfGenerator.js b/pdfGenerator.js
new file mode 100644
index 0000000..696b975
--- /dev/null
+++ b/pdfGenerator.js
@@ -0,0 +1,90 @@
+const PDFDocument = require('pdfkit');
+
+/**
+ * Generates a PDF invoice based on Shopify order data.
+ * @param {Object} orderData - The Shopify order payload
+ * @returns {Promise<Buffer>} - A promise that resolves to a Buffer containing the PDF data
+ */
+const generateInvoicePDF = (orderData) => {
+    return new Promise((resolve, reject) => {
+        try {
+            const doc = new PDFDocument({ margin: 50 });
+            let buffers = [];
+
+            doc.on('data', buffers.push.bind(buffers));
+            doc.on('end', () => {
+                const pdfData = Buffer.concat(buffers);
+                resolve(pdfData);
+            });
+
+            // Invoice Header
+            doc.fontSize(20).text('Invoice', { align: 'right' });
+            doc.moveDown();
+
+            doc.fontSize(12)
+                .text(`Order Number: ${orderData.name || orderData.order_number}`)
+                .text(`Date: ${new Date(orderData.created_at).toLocaleDateString()}`)
+                .moveDown();
+
+            // Store Info (You can customize this)
+            const shopName = process.env.SHOP_NAME || 'Your Store Name';
+            doc.fontSize(14).text(shopName);
+            doc.moveDown();
+
+            // Customer Info
+            doc.fontSize(14).text('Billed To:');
+            doc.fontSize(12).text(`${orderData.billing_address?.first_name || ''} ${orderData.billing_address?.last_name || ''}`);
+            doc.text(`${orderData.billing_address?.address1 || ''}`);
+            if (orderData.billing_address?.address2) {
+                doc.text(`${orderData.billing_address.address2}`);
+            }
+            doc.text(`${orderData.billing_address?.city || ''}, ${orderData.billing_address?.province || ''} ${orderData.billing_address?.zip || ''}`);
+            doc.text(`${orderData.billing_address?.country || ''}`);
+            doc.moveDown(2);
+
+            // Line Items Table Header
+            doc.fontSize(12).font('Helvetica-Bold');
+            doc.text('Item', 50, doc.y, { continued: true });
+            doc.text('Qty', 300, doc.y, { continued: true, width: 50, align: 'right' });
+            doc.text('Price', 350, doc.y, { continued: true, width: 100, align: 'right' });
+            doc.text('Total', 450, doc.y, { width: 100, align: 'right' });
+            
+            doc.moveTo(50, doc.y).lineTo(550, doc.y).stroke();
+            doc.moveDown(0.5);
+
+            // Line Items Table Rows
+            doc.font('Helvetica');
+            let currentY = doc.y;
+            
+            if (orderData.line_items && orderData.line_items.length > 0) {
+                orderData.line_items.forEach(item => {
+                    doc.text(item.name, 50, currentY, { width: 250 });
+                    doc.text(item.quantity.toString(), 300, currentY, { width: 50, align: 'right' });
+                    doc.text(`${orderData.currency} ${parseFloat(item.price).toFixed(2)}`, 350, currentY, { width: 100, align: 'right' });
+                    const total = parseFloat(item.price) * item.quantity;
+                    doc.text(`${orderData.currency} ${total.toFixed(2)}`, 450, currentY, { width: 100, align: 'right' });
+                    
+                    doc.moveDown(0.5);
+                    currentY = doc.y;
+                });
+            }
+
+            doc.moveTo(50, currentY).lineTo(550, currentY).stroke();
+            doc.moveDown(1);
+
+            // Totals
+            doc.text(`Subtotal: ${orderData.currency} ${orderData.subtotal_price}`, { align: 'right' });
+            if (orderData.total_tax > 0) {
+                doc.text(`Tax: ${orderData.currency} ${orderData.total_tax}`, { align: 'right' });
+            }
+            doc.text(`Shipping: ${orderData.currency} ${orderData.total_shipping_price_set?.shop_money?.amount || '0.00'}`, { align: 'right' });
+            doc.font('Helvetica-Bold').text(`Total: ${orderData.currency} ${orderData.total_price}`, { align: 'right' });
+
+            doc.end();
+        } catch (error) {
+            reject(error);
+        }
+    });
+};
+
+module.exports = { generateInvoicePDF };
diff --git a/server.js b/server.js
new file mode 100644
index 0000000..f132fa0
--- /dev/null
+++ b/server.js
@@ -0,0 +1,82 @@
+require('dotenv').config({ override: true });
+const express = require('express');
+const crypto = require('crypto');
+const { generateInvoicePDF } = require('./pdfGenerator');
+const { sendEmailWithAttachment } = require('./mailer');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// Middleware to capture raw body for Shopify webhook HMAC verification
+app.use(express.json({
+    verify: (req, res, buf) => {
+        req.rawBody = buf;
+    }
+}));
+
+// Function to verify Shopify Webhook
+const verifyShopifyWebhook = (req, res, next) => {
+    const hmacHeader = req.get('X-Shopify-Hmac-Sha256');
+    const body = req.rawBody;
+    const secret = process.env.SHOPIFY_WEBHOOK_SECRET;
+
+    if (!hmacHeader || !body || !secret) {
+        return res.status(401).send('Webhook verification failed: Missing headers or secret.');
+    }
+
+    const generatedHash = crypto
+        .createHmac('sha256', secret)
+        .update(body, 'utf8')
+        .digest('base64');
+
+    if (generatedHash !== hmacHeader) {
+        return res.status(401).send('Webhook verification failed: Invalid HMAC.');
+    }
+
+    next();
+};
+
+// Webhook endpoint for Order Creation
+app.post('/webhooks/orders/create', verifyShopifyWebhook, async (req, res) => {
+    const fs = require('fs');
+    const logMessage = `[${new Date().toISOString()}] Received webhook request\n`;
+    fs.appendFileSync('webhook.log', logMessage);
+
+    // Acknowledge receipt of the webhook immediately
+    res.status(200).send('Webhook received');
+
+    try {
+        const orderData = req.body;
+        const processMessage = `[${new Date().toISOString()}] Processing Order ${orderData.order_number}\n`;
+        fs.appendFileSync('webhook.log', processMessage);
+
+        // 1. Generate the PDF invoice
+        const pdfBuffer = await generateInvoicePDF(orderData);
+
+        // 2. Send the email with the attached PDF
+        const customerEmail = orderData.email || orderData.contact_email;
+        if (!customerEmail) {
+            const errorMsg = `[${new Date().toISOString()}] Order ${orderData.order_number} has no email address associated.\n`;
+            fs.appendFileSync('webhook.log', errorMsg);
+            return;
+        }
+
+        await sendEmailWithAttachment(
+            customerEmail,
+            orderData.order_number,
+            pdfBuffer
+        );
+
+        const successMsg = `[${new Date().toISOString()}] Successfully processed and sent email for Order ${orderData.order_number}\n`;
+        fs.appendFileSync('webhook.log', successMsg);
+
+    } catch (error) {
+        const errorMsg = `[${new Date().toISOString()}] Error processing order webhook: ${error.stack}\n`;
+        fs.appendFileSync('webhook.log', errorMsg);
+        console.error('Error processing order webhook:', error);
+    }
+});
+
+app.listen(PORT, () => {
+    console.log(`Shopify Invoice Email Plugin running on port ${PORT}`);
+});