refactoring 1. step

src/services/pdf-service.js

@@ -0,0 +1,205 @@
+/**
+ * PDF Generation Service
+ * Handles HTML to PDF conversion using Puppeteer
+ */
+const path = require('path');
+const fs = require('fs').promises;
+const { formatMoney, formatDate } = require('../utils/helpers');
+
+// Initialize browser - will be set from main app
+let browserInstance = null;
+
+function setBrowser(browser) {
+    browserInstance = browser;
+}
+
+async function getBrowser() {
+    return browserInstance;
+}
+
+/**
+ * Generate PDF from HTML template
+ */
+async function generatePdfFromHtml(html, options = {}) {
+    const {
+        format = 'Letter',
+        margin = { top: '0.5in', right: '0.5in', bottom: '0.5in', left: '0.5in' },
+        printBackground = true
+    } = options;
+
+    const browser = await getBrowser();
+    if (!browser) {
+        throw new Error('Browser not initialized');
+    }
+
+    const page = await browser.newPage();
+    await page.setContent(html, { waitUntil: 'networkidle0', timeout: 60000 });
+    
+    const pdf = await page.pdf({
+        format,
+        printBackground,
+        margin
+    });
+    
+    await page.close();
+    return pdf;
+}
+
+/**
+ * Get company logo as base64 HTML
+ */
+async function getLogoHtml() {
+    let logoHTML = '';
+    try {
+        const logoPath = path.join(__dirname, '..', '..', 'public', 'uploads', 'company-logo.png');
+        const logoData = await fs.readFile(logoPath);
+        const logoBase64 = logoData.toString('base64');
+        logoHTML = `<img src="data:image/png;base64,${logoBase64}" alt="Company Logo" class="logo logo-size">`;
+    } catch (err) {
+        // No logo found
+    }
+    return logoHTML;
+}
+
+/**
+ * Render invoice items to HTML table rows
+ */
+function renderInvoiceItems(items, invoice = null) {
+    let itemsHTML = items.map(item => {
+        let rateFormatted = item.rate;
+        if (item.rate.toUpperCase() !== 'TBD' && !item.rate.includes('/')) {
+            const rateNum = parseFloat(item.rate.replace(/[^0-9.]/g, ''));
+            if (!isNaN(rateNum)) rateFormatted = rateNum.toFixed(2);
+        }
+        return `
+        <tr>
+            <td class="qty">${item.quantity}</td>
+            <td class="description">${item.description}</td>
+            <td class="rate">${rateFormatted}</td>
+            <td class="amount">${item.amount}</td>
+        </tr>`;
+    }).join('');
+    
+    // Add subtotal
+    const subtotal = invoice ? invoice.subtotal : 0;
+    itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label">Subtotal:</td>
+            <td class="total-amount">$${formatMoney(subtotal)}</td>
+        </tr>`;
+    
+    // Add tax if not exempt
+    if (invoice && !invoice.tax_exempt) {
+        itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label">Tax (${invoice.tax_rate}%):</td>
+            <td class="total-amount">$${formatMoney(invoice.tax_amount)}</td>
+        </tr>`;
+    }
+    
+    // Add total
+    const amountPaid = invoice ? (parseFloat(invoice.amount_paid) || 0) : 0;
+    const total = invoice ? parseFloat(invoice.total) : 0;
+    const balanceDue = total - amountPaid;
+    
+    itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label" style="font-size: 16px;">TOTAL:</td>
+            <td class="total-amount" style="font-size: 16px;">$${formatMoney(total)}</td>
+        </tr>`;
+    
+    // Add downpayment/balance if partial
+    if (amountPaid > 0) {
+        itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label" style="color: #059669;">Downpayment:</td>
+            <td class="total-amount" style="color: #059669;">-$${formatMoney(amountPaid)}</td>
+        </tr>
+        <tr class="footer-row">
+            <td colspan="3" class="total-label" style="font-weight: bold; font-size: 16px; border-top: 2px solid #333; padding-top: 8px;">BALANCE DUE:</td>
+            <td class="total-amount" style="font-weight: bold; font-size: 16px; border-top: 2px solid #333; padding-top: 8px;">$${formatMoney(balanceDue)}</td>
+        </tr>`;
+    }
+    
+    // Thank you message
+    itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="4" class="thank-you">Thank you for your business!</td>
+        </tr>`;
+    
+    return itemsHTML;
+}
+
+/**
+ * Render quote items to HTML table rows
+ */
+function renderQuoteItems(items, quote = null) {
+    let itemsHTML = items.map(item => {
+        let rateFormatted = item.rate;
+        if (item.rate.toUpperCase() !== 'TBD' && !item.rate.includes('/')) {
+            const rateNum = parseFloat(item.rate.replace(/[^0-9.]/g, ''));
+            if (!isNaN(rateNum)) rateFormatted = rateNum.toFixed(2);
+        }
+        return `
+        <tr>
+            <td class="qty">${item.quantity}</td>
+            <td class="description">${item.description}</td>
+            <td class="rate">${rateFormatted}</td>
+            <td class="amount">${item.amount}</td>
+        </tr>`;
+    }).join('');
+    
+    // Add subtotal
+    const subtotal = quote ? quote.subtotal : 0;
+    itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label">Subtotal</td>
+            <td class="total-amount">$${formatMoney(subtotal)}</td>
+        </tr>`;
+    
+    // Add tax if not exempt
+    if (quote && !quote.tax_exempt) {
+        itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label">Tax (${quote.tax_rate}%)</td>
+            <td class="total-amount">$${formatMoney(quote.tax_amount)}</td>
+        </tr>`;
+    }
+    
+    // Add total
+    const total = quote ? quote.total : 0;
+    itemsHTML += `
+        <tr class="footer-row">
+            <td colspan="3" class="total-label" style="font-size: 16px;">TOTAL</td>
+            <td class="total-amount" style="font-size: 16px;">$${formatMoney(total)}</td>
+        </tr>
+        <tr class="footer-row">
+            <td colspan="4" class="thank-you">This quote is valid for 14 days. We appreciate your business </td>
+        </tr>`;
+    
+    return itemsHTML;
+}
+
+/**
+ * Format address lines for template
+ */
+function formatAddressLines(line1, line2, line3, line4, customerName) {
+    const addressLines = [];
+    if (line1 && line1.trim().toLowerCase() !== (customerName || '').trim().toLowerCase()) {
+        addressLines.push(line1);
+    }
+    if (line2) addressLines.push(line2);
+    if (line3) addressLines.push(line3);
+    if (line4) addressLines.push(line4);
+    return addressLines.join('<br>');
+}
+
+module.exports = {
+    setBrowser,
+    getBrowser,
+    generatePdfFromHtml,
+    getLogoHtml,
+    renderInvoiceItems,
+    renderQuoteItems,
+    formatAddressLines
+};