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Website : rimsha.abasa.com
: / var / www / mudeerapi.abasa.com / nodetest-backup30April26 / src / services /
Filename : invoicePdfService.js
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import { marked } from 'marked';
import { S3Client, PutObjectCommand } from '@aws-sdk/client-s3';
import fs from 'fs';

const s3Client = new S3Client({
  region: process.env.AWS_REGION,
  credentials: {
    accessKeyId: process.env.AWS_ACCESS_KEY_ID,
    secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
  },
});

const BUCKET = process.env.AWS_BUCKET_NAME || 'mudeer-bucket';

function wrapHtml(bodyHtml) {
  return `<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Invoice</title>
  <style>
    @page { size: A4; margin: 10px; }
    body { font-family: system-ui, -apple-system, sans-serif; max-width: 720px; margin: 0 auto; padding: 0; color: #000; line-height: 1.35; font-size: 13px; }
    h1 { color: #5D2D83; font-size: 52px; font-weight: 900; letter-spacing: -1px; text-transform: uppercase; line-height: 0.92; margin: 0 0 5px; }
    h2 { color: #234297; font-size: 20px; font-weight: 800; line-height: 1; margin: 0 0 2px; }
    p { margin: 0 0 4px; white-space: pre-line; color: #000; }
    hr { border: none; border-top: 1px solid #5D2D83; margin: 14px 0; }
    table { width: 100%; border-collapse: collapse; margin: 1px 0; page-break-inside: avoid; }
    th, td { text-align: left; padding: 2px 0; }
    th { color: #234297; font-weight: 800; font-size: 14px; border-bottom: 2px solid #5D2D83; padding-left: 0; padding-right: 0; }
    td { padding-left: 0; padding-right: 0; vertical-align: top; color: #000; }
    .invoice-meta-row { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
    .bill-to-block { flex: 1 1 auto; max-width: 62%; }
    .invoice-number-block { min-width: 160px; }
    .meta-line { display: flex; justify-content: space-between; gap: 6px; font-size: 16px; line-height: 1.1; }
    .meta-line strong { min-width: 120px; color: #234297; font-weight: 800; }
    .description-cell { white-space: pre-line; color: #000; }
    .amount-cell { text-align: right; white-space: nowrap; color: #000; }
    .total-label { text-align: right; font-weight: 800; font-size: 20px; padding-top: 4px; color: #234297; }
    .total-value { text-align: right; font-weight: 800; font-size: 20px; padding-top: 4px; white-space: nowrap; color: #234297; }
    .total { font-weight: bold; font-size: 1.2rem; color: #234297; }
    .muted { color: #64748b; font-size: 0.875rem; }

    .page-break { page-break-before: always; break-before: page; height: 1px; }
    .att-title { color: #234297; font-size: 18px; font-weight: 800; margin: 10px 0 6px; }
    .att-table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 11px; }
    .att-table th { text-align: left; font-size: 11px; padding: 6px 6px; border-bottom: 2px solid #5D2D83; color: #234297; }
    .att-table td { padding: 6px 6px; border-bottom: 1px solid #e5e7eb; vertical-align: top; }
    .att-table tbody tr:nth-child(even) { background: #f8fafc; }
    .att-status { display: inline-block; padding: 2px 6px; border-radius: 999px; font-weight: 700; font-size: 10px; }
    .att-status-present { background: #dcfce7; color: #166534; }
    .att-status-late { background: #fef9c3; color: #854d0e; }
    .att-status-absent { background: #fee2e2; color: #991b1b; }
    .att-status-daily-off { background: #f3e8ff; color: #6b21a8; }
    .att-status-public-holiday { background: #fed7aa; color: #9a3412; }
    .att-status-paid-leave { background: #dbeafe; color: #1e40af; }
    .att-status-unpaid-leave { background: #e5e7eb; color: #374151; }
    .att-status-no-record { background: #f3f4f6; color: #6b7280; }
  </style>
</head>
<body>
${bodyHtml}
</body>
</html>`;
}

export async function markdownToHtml(markdown) {
  if (!markdown) return '';
  const raw = await Promise.resolve(marked.parse(markdown));
  return typeof raw === 'string' ? raw : String(raw);
}

export async function renderInvoiceMarkdownToPdf(markdown) {
  const puppeteer = await import('puppeteer');
  const html = wrapHtml(markdown || '');
  const baseLaunchOptions = {
    headless: true,
    args: ['--no-sandbox', '--disable-setuid-sandbox'],
  };

  const configuredPath =
    process.env.PUPPETEER_EXECUTABLE_PATH ||
    process.env.CHROME_PATH ||
    process.env.GOOGLE_CHROME_BIN;

  const fallbackPaths = process.platform === 'win32'
    ? [
        'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe',
        'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe',
      ]
    : process.platform === 'darwin'
      ? ['/Applications/Google Chrome.app/Contents/MacOS/Google Chrome']
      : ['/usr/bin/google-chrome', '/usr/bin/google-chrome-stable', '/usr/bin/chromium-browser', '/usr/bin/chromium'];

  const candidatePaths = [configuredPath, ...fallbackPaths].filter(Boolean);

  let browser = null;
  let lastError = null;

  // First try Puppeteer's default resolution (works when bundled browser exists).
  try {
    browser = await puppeteer.default.launch(baseLaunchOptions);
  } catch (err) {
    lastError = err;
  }

  // Fallback to explicit Chrome paths when Puppeteer cache/browser is missing.
  if (!browser) {
    for (const executablePath of candidatePaths) {
      try {
        if (!fs.existsSync(executablePath)) continue;
        browser = await puppeteer.default.launch({
          ...baseLaunchOptions,
          executablePath,
        });
        break;
      } catch (err) {
        lastError = err;
      }
    }
  }

  if (!browser) {
    throw new Error(
      `Unable to launch Chrome for invoice PDF rendering. Set PUPPETEER_EXECUTABLE_PATH or install Chrome. ${lastError ? `Last error: ${lastError.message}` : ''}`
    );
  }
  try {
    const page = await browser.newPage();
    await page.setContent(html, { waitUntil: 'networkidle0' });
    const buffer = await page.pdf({
      format: 'A4',
      margin: { top: '10px', right: '10px', bottom: '10px', left: '10px' },
      printBackground: true,
    });
    return buffer;
  } finally {
    await browser.close();
  }
}

export async function uploadInvoicePdfToS3(buffer, key) {
  await s3Client.send(
    new PutObjectCommand({
      Bucket: BUCKET,
      Key: key,
      Body: buffer,
      ContentType: 'application/pdf',
    })
  );
  const region = process.env.AWS_REGION || 'us-east-1';
  const url = `https://${BUCKET}.s3.${region}.amazonaws.com/${key}`;
  return url;
}

export function getInvoicePdfKey(year, month, invoiceId) {
  return `invoices/${year}/${month}/${invoiceId}.pdf`;
}