scottpeterson.github.io/wrap-reports.js at main · scottpeterson/scottpeterson.github.io · GitHub

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#!/usr/bin/env node

/**
 * wrap-reports.js - Wraps standalone HTML reports with site navigation
 *
 * PURPOSE:
 * This script enables a zero-config workflow for publishing standalone HTML reports.
 * Drop an HTML file into data/static_reports_html/, run npm run wrap-reports,
 * and the report appears on the site with full navigation.
 *
 * HOW IT WORKS:
 * 1. Scans data/static_reports_html/ for HTML files
 * 2. Extracts <title>, <style>, <body>, and external scripts from each
 * 3. Wraps content in site template with nav/header/footer
 * 4. Scopes CSS to prevent conflicts (body{} -> .report-slug{})
 * 5. Outputs wrapped reports to reports/{slug}.html
 * 6. Generates reports/index.html with a grid of all reports
 *
 * CSS ISOLATION:
 * Reports often have global styles targeting body, *, etc.
 * To prevent conflicts with the site styles, we:
 * - Wrap report content in a div with class .report-{slug}
 * - Transform CSS selectors: body {} -> .report-{slug} {}
 * - Site styles load first, then scoped report styles
 *
 * WORKFLOW:
 * 1. Drop HTML file into data/static_reports_html/
 * 2. Run: npm run wrap-reports
 * 3. Commit: git add reports/ && git commit -m "Add reports" && git push
 */

const fs = require('fs').promises;
const path = require('path');

const SOURCE_DIR = 'data/static_reports_html';
const OUTPUT_DIR = 'reports';

/**
 * Convert filename to URL slug
 * Examples:
 *   bubble_watch.html -> bubble_watch
 *   team_comparison_2026-02-01.html -> team_comparison_2026-02-01
 */
function fileToSlug(filename) {
  return path.basename(filename, '.html');
}

/**
 * Convert slug to human-readable title
 * Examples:
 *   bubble_watch -> Bubble Watch
 *   team_comparison_2026-02-01 -> Team Comparison 2026 02 01
 */
function slugToTitle(slug) {
  return slug
    .replace(/_/g, ' ')
    .replace(/-/g, ' ')
    .replace(/\b\w/g, c => c.toUpperCase());
}

/**
 * Extract content between tags using regex
 * Returns the first match or null
 */
function extractBetween(html, startTag, endTag) {
  const regex = new RegExp(`${startTag}([\\s\\S]*?)${endTag}`, 'i');
  const match = html.match(regex);
  return match ? match[1].trim() : null;
}

/**
 * Extract the <title> from HTML
 */
function extractTitle(html) {
  const match = html.match(/<title>([^<]*)<\/title>/i);
  return match ? match[1].trim() : null;
}

/**
 * Extract all <style> blocks from HTML
 */
function extractStyles(html) {
  const styles = [];
  const regex = /<style[^>]*>([\s\S]*?)<\/style>/gi;
  let match;
  while ((match = regex.exec(html)) !== null) {
    styles.push(match[1].trim());
  }
  return styles.join('\n\n');
}

/**
 * Extract external script URLs (src attributes)
 */
function extractExternalScripts(html) {
  const scripts = [];
  const regex = /<script[^>]+src=["']([^"']+)["'][^>]*>/gi;
  let match;
  while ((match = regex.exec(html)) !== null) {
    scripts.push(match[1]);
  }
  return scripts;
}

/**
 * Extract inline script content
 */
function extractInlineScripts(html) {
  const scripts = [];
  // Match script tags without src attribute that have content
  const regex = /<script(?![^>]*\ssrc=)[^>]*>([\s\S]*?)<\/script>/gi;
  let match;
  while ((match = regex.exec(html)) !== null) {
    const content = match[1].trim();
    if (content) {
      scripts.push(content);
    }
  }
  return scripts;
}

/**
 * Extract body content (everything between <body> and </body>)
 * Strips out script tags since we handle those separately
 */
function extractBody(html) {
  let body = extractBetween(html, '<body[^>]*>', '</body>') || '';
  // Remove all script tags (both with src and inline) since we handle them separately
  body = body.replace(/<script[^>]*>[\s\S]*?<\/script>/gi, '');
  return body.trim();
}

/**
 * Scope CSS selectors to prevent conflicts with site styles
 *
 * Transforms:
 *   body { ... } -> .report-slug { ... }
 *   * { ... } -> .report-slug * { ... }
 *   .class { ... } -> .report-slug .class { ... }
 *
 * This keeps report styles isolated to their wrapper div
 */
function scopeCSS(css, slug) {
  const scopeClass = `.report-${slug}`;

  // Split CSS into rules (handling nested braces for @media etc.)
  let result = '';
  let depth = 0;
  let currentRule = '';
  const inMedia = false;
  const mediaQuery = '';

  for (let i = 0; i < css.length; i++) {
    const char = css[i];

    if (char === '{') {
      depth++;
      currentRule += char;
    } else if (char === '}') {
      depth--;
      currentRule += char;

      if (depth === 0) {
        // Process completed rule
        if (currentRule.trim().startsWith('@media')) {
          // Handle @media blocks
          result += scopeMediaBlock(currentRule, scopeClass);
        } else if (
          currentRule.trim().startsWith('@keyframes') ||
          currentRule.trim().startsWith('@-webkit-keyframes')
        ) {
          // Keep keyframes as-is
          result += currentRule;
        } else {
          // Regular rule
          result += scopeRule(currentRule, scopeClass);
        }
        currentRule = '';
      }
    } else {
      currentRule += char;
    }
  }

  return result;
}

/**
 * Scope a single CSS rule
 */
function scopeRule(rule, scopeClass) {
  // Match selector and body
  const match = rule.match(/^([^{]+)\{([\s\S]*)\}$/);
  if (!match) {
    return rule;
  }

  const selector = match[1].trim();
  const body = match[2];

  // Transform selector
  const scopedSelector = scopeSelector(selector, scopeClass);
  return `${scopedSelector} {\n${body}}\n`;
}

/**
 * Scope a @media block
 */
function scopeMediaBlock(block, scopeClass) {
  // Extract media query and inner rules
  const mediaMatch = block.match(/@media([^{]+)\{([\s\S]*)\}$/);
  if (!mediaMatch) {
    return block;
  }

  const mediaQuery = mediaMatch[1].trim();
  const innerCSS = mediaMatch[2];

  // Scope inner rules
  const scopedInner = scopeCSS(innerCSS, scopeClass.replace('.report-', ''));

  return `@media ${mediaQuery} {\n${scopedInner}}\n`;
}

/**
 * Scope a single selector
 */
function scopeSelector(selector, scopeClass) {
  // Handle multiple selectors (comma-separated)
  return selector
    .split(',')
    .map(s => {
      s = s.trim();

      // body -> .report-slug
      if (s === 'body') {
        return scopeClass;
      }

      // html -> .report-slug (treat similarly)
      if (s === 'html') {
        return scopeClass;
      }

      // * -> .report-slug *
      if (s === '*') {
        return `${scopeClass} *`;
      }

      // body.class or body .class -> .report-slug.class or .report-slug .class
      if (s.startsWith('body')) {
        return s.replace(/^body/, scopeClass);
      }

      // Regular selectors -> .report-slug .selector
      return `${scopeClass} ${s}`;
    })
    .join(', ');
}

/**
 * Generate navigation HTML with Reports dropdown
 * Mirrors the full site navigation from build.js
 */
function generateNav(reports, currentSlug = null) {
  // Build Reports dropdown items
  const dropdownItems = reports
    .map(r => {
      const isActive = r.slug === currentSlug ? ' class="active"' : '';
      return `              <li><a href="${r.slug}.html"${isActive}>${r.title}</a></li>`;
    })
    .join('\n');

  // Navigation with Reports dropdown - matches full site nav from build.js
  return `
    <nav class="main-nav">
      <div class="nav-container">
        <div class="logo"><a href="/">The D3 Stat Lab</a></div>

        <!-- Hamburger Menu Toggle (only appears on mobile) -->
        <div class="menu-toggle" id="menuToggle">
          <span></span>
          <span></span>
          <span></span>
        </div>

        <!-- Navigation Links -->
        <ul class="nav-links" id="navMenu">
          <!-- Close button placed separately at the top of the menu -->
          <div class="menu-close" id="menuClose"></div>

          <li><a href="/">Home</a></li>
          <li><a href="/npi.html">NPI</a></li>
          <li><a href="/season_simulations.html">Season Simulations</a></li>
          <li><a href="/current_season_rankings.html">Current Season Rankings</a></li>
          <li><a href="/conference_rankings.html">Conference Rankings</a></li>
          <li><a href="/composite_rankings.html">Composite Rankings</a></li>
          <li><a href="/distances.html">Distances</a></li>
          <li><a href="/preseason_rankings.html">26-27 Preseason Rankings</a></li>
          <li><a href="/returners.html">Returning and Non-Returning</a></li>
          <li><a href="/publishing_tracker.html">Publishing Tracker</a></li>
          <li class="nav-dropdown">
            <a href="/reports/" class="dropdown-trigger${currentSlug ? ' active' : ''}">Reports <span class="dropdown-arrow">▾</span></a>
            <ul class="dropdown-menu">
              <li><a href="/reports/">All Reports</a></li>
              <li class="dropdown-divider"></li>
${dropdownItems}
            </ul>
          </li>
          <li><a href="/premium.html">Premium</a></li>
          <li><a href="/contact.html">Contact</a></li>
        </ul>
      </div>

      <!-- Overlay for mobile -->
      <div class="nav-overlay" id="navOverlay"></div>
    </nav>`;
}

/**
 * Generate the wrapped HTML for a single report
 */
function generateWrappedReport(report, allReports) {
  const { slug, title, styles, body, externalScripts, inlineScripts } = report;

  const nav = generateNav(allReports, slug);

  // Generate external script tags
  const externalScriptTags = externalScripts
    .map(src => `    <script src="${src}"></script>`)
    .join('\n');

  // Generate inline script tags
  const inlineScriptTags = inlineScripts
    .map(content => `    <script>\n${content}\n    </script>`)
    .join('\n');

  return `<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>${title} - The D3 Stat Lab</title>

    <!-- Block AI/LLM crawlers from using content for training -->
    <meta name="robots" content="noai, noimageai" />
    <meta name="googlebot" content="noai, noimageai" />

    <link rel="icon" type="image/png" href="/favicon.png" />
    <link rel="stylesheet" href="/styles.css" />
    <link rel="stylesheet" href="/css/reports.css" />

    <!-- Scoped report styles -->
    <style>
${styles}
    </style>

    <!-- GoatCounter Analytics -->
    <script
      data-goatcounter="https://thed3statlab.goatcounter.com/count"
      async
      src="https://gc.zgo.at/count.js"
    ></script>
  </head>
  <body>
    ${nav}

    <div class="report-wrapper">
      <div class="report-back-link">
        <a href="/reports/">← Back to Reports</a>
      </div>

      <div class="report-${slug}">
${body}
      </div>
    </div>

    <footer>
      <p>&copy; <span id="currentYear">2026</span> D3 Stat Lab. All rights reserved.</p>
    </footer>
    <script>document.getElementById('currentYear').textContent = new Date().getFullYear();</script>

    <!-- JavaScript for navigation -->
    <script src="/js/navigation.js"></script>
    <script src="/js/reports-nav.js"></script>
${externalScriptTags}
${inlineScriptTags}
  </body>
</html>`;
}

/**
 * Generate the reports index page
 */
function generateIndexPage(reports) {
  const nav = generateNav(reports);

  // Sort reports alphabetically by title
  const sortedReports = [...reports].sort((a, b) =>
    a.title.localeCompare(b.title)
  );

  // Generate report cards
  const cards = sortedReports
    .map(r => {
      return `        <a href="${r.slug}.html" class="report-card">
          <h3>${r.title}</h3>
          <span class="report-card-arrow">→</span>
        </a>`;
    })
    .join('\n');

  return `<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Reports - The D3 Stat Lab</title>

    <!-- Block AI/LLM crawlers from using content for training -->
    <meta name="robots" content="noai, noimageai" />
    <meta name="googlebot" content="noai, noimageai" />

    <link rel="icon" type="image/png" href="/favicon.png" />
    <link rel="stylesheet" href="/styles.css" />
    <link rel="stylesheet" href="/css/reports.css" />

    <!-- GoatCounter Analytics -->
    <script
      data-goatcounter="https://thed3statlab.goatcounter.com/count"
      async
      src="https://gc.zgo.at/count.js"
    ></script>
  </head>
  <body>
    ${nav}

    <main>
      <header>
        <h1>Reports</h1>
        <p>Interactive reports and visualizations for D3 Women's Basketball</p>
      </header>

      <div class="reports-grid">
${cards}
      </div>
    </main>

    <footer>
      <p>&copy; <span id="currentYear">2026</span> D3 Stat Lab. All rights reserved.</p>
    </footer>
    <script>document.getElementById('currentYear').textContent = new Date().getFullYear();</script>

    <!-- JavaScript for navigation -->
    <script src="/js/navigation.js"></script>
    <script src="/js/reports-nav.js"></script>
  </body>
</html>`;
}

/**
 * Process a single HTML report file
 */
async function processReport(filename) {
  const filepath = path.join(SOURCE_DIR, filename);
  const html = await fs.readFile(filepath, 'utf8');

  const slug = fileToSlug(filename);
  const extractedTitle = extractTitle(html);
  const title = extractedTitle || slugToTitle(slug);
  const rawStyles = extractStyles(html);
  const styles = scopeCSS(rawStyles, slug);
  const body = extractBody(html);
  const externalScripts = extractExternalScripts(html);
  const inlineScripts = extractInlineScripts(html);

  return {
    slug,
    title,
    styles,
    body,
    externalScripts,
    inlineScripts,
    filename,
  };
}

/**
 * Main entry point
 */
async function main() {
  console.log('📦 Wrapping static reports...\n');

  try {
    // Ensure output directory exists
    await fs.mkdir(OUTPUT_DIR, { recursive: true });

    // Find all HTML files in source directory
    let files;
    try {
      files = await fs.readdir(SOURCE_DIR);
    } catch (e) {
      console.log(`ℹ️  No source directory found at ${SOURCE_DIR}`);
      console.log('   Create the directory and add HTML reports to wrap.\n');
      return;
    }

    const htmlFiles = files.filter(f => f.endsWith('.html'));

    if (htmlFiles.length === 0) {
      console.log(`ℹ️  No HTML files found in ${SOURCE_DIR}\n`);
      return;
    }

    console.log(`📄 Found ${htmlFiles.length} reports to process...\n`);

    // Clean up stale reports in output dir that no longer have a source file.
    // Without this, old files linger in reports/ and get picked up by build.js
    // for the nav dropdown, creating broken links.
    const sourceBasenames = new Set(htmlFiles.map(f => path.basename(f)));
    try {
      const existingOutputFiles = await fs.readdir(OUTPUT_DIR);
      const staleFiles = existingOutputFiles.filter(
        f =>
          f.endsWith('.html') && f !== 'index.html' && !sourceBasenames.has(f)
      );
      for (const stale of staleFiles) {
        await fs.unlink(path.join(OUTPUT_DIR, stale));
        console.log(`  🗑  Removed stale report: ${stale}`);
      }
      if (staleFiles.length > 0) {
        console.log('');
      }
    } catch (e) {
      // Output dir may not exist yet — that's fine, nothing to clean
    }

    // Process all reports
    const reports = [];
    for (const file of htmlFiles) {
      const report = await processReport(file);
      reports.push(report);
      console.log(`  ✓ Processed ${file} → ${report.slug}.html`);
    }

    // Generate wrapped reports
    console.log('\n📝 Generating wrapped reports...\n');
    for (const report of reports) {
      const html = generateWrappedReport(report, reports);
      const outputPath = path.join(OUTPUT_DIR, `${report.slug}.html`);
      await fs.writeFile(outputPath, html, 'utf8');
      console.log(`  ✓ Generated ${outputPath}`);
    }

    // Generate index page
    const indexHtml = generateIndexPage(reports);
    const indexPath = path.join(OUTPUT_DIR, 'index.html');
    await fs.writeFile(indexPath, indexHtml, 'utf8');
    console.log(`  ✓ Generated ${indexPath}`);

    console.log(`\n✅ Successfully wrapped ${reports.length} reports!`);
    console.log('   View at: http://localhost:8000/reports/\n');
  } catch (error) {
    console.error('\n❌ Error:', error.message);
    process.exit(1);
  }
}

// Run if called directly
if (require.main === module) {
  main();
}

module.exports = { main, processReport, scopeCSS };