373 lines
14 KiB
JavaScript
373 lines
14 KiB
JavaScript
const PDFDocument = require('pdfkit');
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/**
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* Helper to draw a mock barcode in the top right corner
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*/
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function drawMockBarcode(doc, x, y, width, height) {
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doc.save();
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let currentX = x;
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const endX = x + width;
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// Draw a series of random thin/thick black lines to look like a barcode
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while (currentX < endX) {
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const lineWidth = Math.random() * 2 + 0.8; // 0.8 to 2.8 pixels wide
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const spacing = Math.random() * 3 + 1.2; // 1.2 to 4.2 pixels spacing
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if (currentX + lineWidth > endX) break;
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doc.rect(currentX, y, lineWidth, height).fill('#000000');
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currentX += lineWidth + spacing;
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}
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doc.restore();
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}
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/**
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* Fetch image buffer from URL safely
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*/
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async function fetchImageBuffer(url) {
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if (!url) return null;
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try {
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const response = await fetch(url);
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if (!response.ok) return null;
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const arrayBuffer = await response.arrayBuffer();
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return Buffer.from(arrayBuffer);
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} catch (err) {
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console.error(`Failed to fetch image from ${url}:`, err.message);
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return null;
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}
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}
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/**
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* Generates a PDF invoice matching the user's custom layout.
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* @param {Object} orderData - The Shopify order payload
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* @returns {Promise<Buffer>} - A promise that resolves to a Buffer containing the PDF data
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*/
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const generateInvoicePDF = async (orderData) => {
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return new Promise(async (resolve, reject) => {
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try {
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const doc = new PDFDocument({ margin: 40, size: 'A4' });
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let buffers = [];
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doc.on('data', buffers.push.bind(buffers));
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doc.on('end', () => {
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const pdfData = Buffer.concat(buffers);
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resolve(pdfData);
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});
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// Colors
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const primaryColor = '#1e293b'; // Slate dark gray
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const textColor = '#334155';
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const lightGray = '#cbd5e1';
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const rowAltColor = '#f8fafc';
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// --- 1. TITLE & BARCODE ---
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// Title (Left)
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const isQuote = orderData.gateway === 'Request Quote' || orderData.payment_gateway_names?.includes('Request Quote');
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const titleText = isQuote ? 'Request Quote' : 'Invoice';
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doc.fontSize(28)
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.font('Helvetica-Bold')
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.fillColor(primaryColor)
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.text(titleText, 40, 40);
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// Barcode (Right)
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drawMockBarcode(doc, 380, 40, 175, 40);
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doc.moveDown(2);
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// --- 2. LOGO & FROM DETAILS ---
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const fromY = 110;
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// Logo (Left)
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let logoLoaded = false;
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const fs = require('fs');
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const path = require('path');
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const localLogoPath = path.join(__dirname, 'logo.png');
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if (fs.existsSync(localLogoPath)) {
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try {
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doc.image(localLogoPath, 40, fromY, { width: 130 });
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logoLoaded = true;
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} catch (e) {
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console.error('Error rendering local logo image:', e);
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}
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}
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if (!logoLoaded) {
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const logoUrl = process.env.SHOP_LOGO_URL;
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const logoBuffer = await fetchImageBuffer(logoUrl);
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if (logoBuffer) {
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try {
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doc.image(logoBuffer, 40, fromY, { width: 130 });
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logoLoaded = true;
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} catch (e) {
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console.error('Error rendering logo image from URL:', e);
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}
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}
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}
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if (!logoLoaded) {
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// Stylish text fallback if image is missing
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doc.fontSize(20)
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.font('Helvetica-Bold')
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.fillColor('#db2777') // Pink accent
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.text('RAY AARI SHOP', 40, fromY);
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}
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// From Address (Right)
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doc.fontSize(10)
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.font('Helvetica-Bold')
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.fillColor(primaryColor)
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.text('From', 380, fromY)
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.font('Helvetica')
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.fillColor(textColor)
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.text('Ray Aari Shop', 380, fromY + 15)
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.text('Sivanatham Salai', 380, fromY + 28)
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.text('Arappalayam Cross Rd, Near : Madura Coats pvt', 380, fromY + 41, { width: 175 })
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.text('Madurai 625016', 380, fromY + 67)
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.text('Tamil Nadu, India', 380, fromY + 80)
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.text('9994333548', 380, fromY + 93);
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// --- 3. BILL TO & ORDER DETAILS ---
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const detailsY = 240;
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// Bill To (Left)
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const billing = orderData.billing_address || {};
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const customContactNumber = orderData.note_attributes?.find?.((attr) => attr.name === 'Contact Number')?.value
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|| orderData.attributes?.['Contact Number']?.contact_phone
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|| orderData.attributes?.['Contact Number']
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|| orderData.contact_phone
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|| orderData.attributes?.contact_phone;
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doc.fontSize(11)
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.font('Helvetica-Bold')
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.fillColor(primaryColor)
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.text('Bill to', 40, detailsY);
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doc.fontSize(10)
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.font('Helvetica')
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.fillColor(textColor);
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let billTextY = detailsY + 18;
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if (billing.first_name || billing.last_name) {
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doc.text(`${billing.first_name || ''} ${billing.last_name || ''}`, 40, billTextY);
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billTextY += 13;
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}
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if (billing.address1) {
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doc.text(billing.address1, 40, billTextY);
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billTextY += 13;
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}
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if (billing.address2) {
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doc.text(billing.address2, 40, billTextY);
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billTextY += 13;
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}
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if (billing.city || billing.province || billing.zip) {
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doc.text(`${billing.city || ''} ${billing.province || ''} ${billing.zip || ''}`, 40, billTextY);
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billTextY += 13;
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}
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if (billing.country) {
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doc.text(billing.country, 40, billTextY);
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billTextY += 13;
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}
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if (orderData.email || orderData.contact_email) {
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doc.text(orderData.email || orderData.contact_email, 40, billTextY);
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billTextY += 13;
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}
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if (billing.phone || orderData.phone) {
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doc.text(billing.phone || orderData.phone, 40, billTextY);
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billTextY += 13;
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}
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if (customContactNumber) {
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doc.text(`Contact: ${customContactNumber}`, 40, billTextY);
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}
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// Order Details (Right)
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const orderDateStr = new Date(orderData.created_at).toLocaleDateString('en-GB'); // DD-MM-YYYY
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const gatewayName = orderData.gateway || 'Request Quote';
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doc.fontSize(14)
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.font('Helvetica-Bold')
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.fillColor(primaryColor)
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.text(`Order no: ${orderData.order_number}`, 380, detailsY)
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.fontSize(10)
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.font('Helvetica-Bold')
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.text('Order date: ', 380, detailsY + 22, { continued: true })
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.font('Helvetica')
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.fillColor(textColor)
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.text(orderDateStr)
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.font('Helvetica-Bold')
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.fillColor(primaryColor)
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.text('Payment method: ', 380, detailsY + 37, { continued: true })
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.font('Helvetica')
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.fillColor(textColor)
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.text(gatewayName);
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// --- 4. PRODUCT TABLE ---
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let tableY = 380;
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// Table Headers
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doc.fontSize(9)
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.font('Helvetica-Bold')
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.fillColor(primaryColor);
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doc.text('S.No', 40, tableY, { width: 35 });
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doc.text('Product', 85, tableY, { width: 270 });
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doc.text('Quantity', 365, tableY, { width: 50, align: 'right' });
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doc.text('Unit price', 425, tableY, { width: 60, align: 'right' });
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doc.text('Total price', 495, tableY, { width: 60, align: 'right' });
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// Line below header
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doc.moveTo(40, tableY + 12)
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.lineTo(555, tableY + 12)
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.lineWidth(0.8)
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.strokeColor(lightGray)
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.stroke();
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tableY += 20;
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// Currency formatting symbol
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const currencySymbol = orderData.currency === 'INR' ? 'Rs. ' : `${orderData.currency} `;
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// Table Rows
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if (orderData.line_items && orderData.line_items.length > 0) {
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for (let i = 0; i < orderData.line_items.length; i++) {
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const item = orderData.line_items[i];
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// Check if we need to start a new page before drawing this row (A4 page height is 842)
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if (tableY > 710) {
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// Draw bottom border line for the current page
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doc.moveTo(40, tableY - 6)
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.lineTo(555, tableY - 6)
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.lineWidth(0.5)
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.strokeColor('#f1f5f9')
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.stroke();
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doc.addPage();
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tableY = 50;
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// Redraw headers on new page
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doc.fontSize(9)
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.font('Helvetica-Bold')
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.fillColor(primaryColor);
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doc.text('S.No', 40, tableY, { width: 35 });
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doc.text('Product', 85, tableY, { width: 270 });
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doc.text('Quantity', 365, tableY, { width: 50, align: 'right' });
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doc.text('Unit price', 425, tableY, { width: 60, align: 'right' });
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doc.text('Total price', 495, tableY, { width: 60, align: 'right' });
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// Line below headers
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doc.moveTo(40, tableY + 12)
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.lineTo(555, tableY + 12)
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.lineWidth(0.8)
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.strokeColor(lightGray)
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.stroke();
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tableY += 25;
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}
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// Background color for alternating rows (slightly taller: 46 height)
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if (i % 2 === 1) {
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doc.rect(40, tableY - 6, 515, 46).fill(rowAltColor);
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}
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doc.fontSize(9)
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.font('Helvetica')
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.fillColor(textColor);
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// S.No
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doc.text((i + 1).toString(), 40, tableY + 10);
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// Handle product image
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let textX = 85;
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let textWidth = 270;
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if (item.image_url) {
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const imgBuffer = await fetchImageBuffer(item.image_url);
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if (imgBuffer) {
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try {
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doc.image(imgBuffer, 85, tableY - 2, { fit: [35, 35] });
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textX = 130;
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textWidth = 225;
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} catch (e) {
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console.error('Error rendering line item image:', e);
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}
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}
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}
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// Product Name and Variant/Quantity details
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const productText = item.title || item.name;
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doc.text(productText, textX, tableY, { width: textWidth, height: 15, ellipsis: true });
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// Display quantity/variant info if available
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if (item.variant_title) {
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doc.fontSize(8)
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.fillColor('#64748b')
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.text(item.variant_title, textX, tableY + 14, { width: textWidth });
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}
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// Reset font size
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doc.fontSize(9).fillColor(textColor);
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// Quantity
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doc.text(item.quantity.toString(), 365, tableY + 10, { width: 50, align: 'right' });
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// Unit Price
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const unitPrice = parseFloat(item.price).toFixed(2);
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doc.text(`${currencySymbol}${unitPrice}`, 425, tableY + 10, { width: 60, align: 'right' });
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// Total Price
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const totalPrice = (parseFloat(item.price) * item.quantity).toFixed(2);
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doc.text(`${currencySymbol}${totalPrice}`, 495, tableY + 10, { width: 60, align: 'right' });
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// Divider Line
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doc.moveTo(40, tableY + 38)
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.lineTo(555, tableY + 38)
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.lineWidth(0.5)
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.strokeColor('#f1f5f9')
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.stroke();
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tableY += 44;
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}
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}
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// --- 5. TOTALS SECTION ---
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if (tableY > 730) {
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doc.addPage();
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tableY = 50;
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}
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tableY += 10;
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doc.fontSize(10)
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.font('Helvetica')
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.fillColor(textColor);
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// Subtotal
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doc.text('Subtotal', 365, tableY, { width: 100, align: 'right' });
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doc.font('Helvetica-Bold')
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.text(`${currencySymbol}${parseFloat(orderData.subtotal_price).toFixed(2)}`, 480, tableY, { width: 75, align: 'right' });
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// Divider
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doc.moveTo(365, tableY + 15)
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.lineTo(555, tableY + 15)
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.lineWidth(0.5)
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.strokeColor(lightGray)
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.stroke();
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tableY += 22;
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// Total
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doc.fontSize(11)
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.font('Helvetica-Bold')
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.fillColor(primaryColor);
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doc.text('Total', 365, tableY, { width: 100, align: 'right' });
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doc.text(`${currencySymbol}${parseFloat(orderData.total_price).toFixed(2)}`, 480, tableY, { width: 75, align: 'right' });
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doc.end();
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} catch (error) {
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reject(error);
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}
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});
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};
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module.exports = { generateInvoicePDF };
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