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performance-test.js

345 lines

#!/usr/bin/env node

/**
 * Performance Testing Suite for Omega Watch Price History
 * Measures: TTFB, FCP, LCP, Bundle sizes, API response times
 */

import { performance } from 'perf_hooks';
import http from 'http';
import https from 'https';
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const BASE_URL = 'http://45.61.58.125:7600';
const RESULTS_FILE = '/tmp/performance-results.json';

// ANSI color codes
const colors = {
  reset: '\x1b[0m',
  green: '\x1b[32m',
  yellow: '\x1b[33m',
  red: '\x1b[31m',
  cyan: '\x1b[36m',
  bold: '\x1b[1m'
};

function colorize(text, color) {
  return `${colors[color]}${text}${colors.reset}`;
}

function getPerformanceRating(value, thresholds) {
  if (value <= thresholds.good) return { rating: 'GOOD', color: 'green' };
  if (value <= thresholds.needsImprovement) return { rating: 'NEEDS IMPROVEMENT', color: 'yellow' };
  return { rating: 'POOR', color: 'red' };
}

// Test HTTP request with timing
function testEndpoint(url) {
  return new Promise((resolve, reject) => {
    const startTime = performance.now();
    const parsedUrl = new URL(url);

    const request = http.get({
      hostname: parsedUrl.hostname,
      port: parsedUrl.port,
      path: parsedUrl.pathname + parsedUrl.search,
      headers: {
        'Accept-Encoding': 'gzip, deflate, br'
      }
    }, (res) => {
      let data = '';
      let ttfb = 0;

      res.once('readable', () => {
        ttfb = performance.now() - startTime;
      });

      res.on('data', chunk => {
        data += chunk;
      });

      res.on('end', () => {
        const totalTime = performance.now() - startTime;
        resolve({
          status: res.statusCode,
          ttfb: ttfb || totalTime,
          totalTime,
          size: Buffer.byteLength(data),
          headers: res.headers,
          compressed: res.headers['content-encoding'] === 'gzip' ||
                     res.headers['content-encoding'] === 'br' ||
                     res.headers['content-encoding'] === 'deflate'
        });
      });
    });

    request.on('error', reject);
    request.setTimeout(10000, () => {
      request.destroy();
      reject(new Error('Request timeout'));
    });
  });
}

// Test bundle sizes
function analyzeBundleSizes() {
  const distDir = path.join(__dirname, 'dist', 'assets');
  const files = fs.readdirSync(distDir);

  const bundles = {
    js: [],
    css: [],
    total: 0
  };

  files.forEach(file => {
    const filePath = path.join(distDir, file);
    const stats = fs.statSync(filePath);
    const size = stats.size;

    if (file.endsWith('.js')) {
      bundles.js.push({ name: file, size });
      bundles.total += size;
    } else if (file.endsWith('.css')) {
      bundles.css.push({ name: file, size });
      bundles.total += size;
    }
  });

  bundles.js.sort((a, b) => b.size - a.size);
  bundles.css.sort((a, b) => b.size - a.size);

  return bundles;
}

// Format bytes
function formatBytes(bytes) {
  if (bytes === 0) return '0 B';
  const k = 1024;
  const sizes = ['B', 'KB', 'MB', 'GB'];
  const i = Math.floor(Math.log(bytes) / Math.log(k));
  return Math.round((bytes / Math.pow(k, i)) * 100) / 100 + ' ' + sizes[i];
}

// Run comprehensive performance tests
async function runPerformanceTests() {
  console.log(colorize('\n╔═══════════════════════════════════════════════════════════╗', 'cyan'));
  console.log(colorize('║  OMEGA WATCH PRICE HISTORY - PERFORMANCE TEST SUITE      ║', 'cyan'));
  console.log(colorize('╚═══════════════════════════════════════════════════════════╝\n', 'cyan'));

  const results = {
    timestamp: new Date().toISOString(),
    tests: {}
  };

  // 1. Test HTML Page Load
  console.log(colorize('1. HTML Page Load (TTFB & Initial Load)', 'bold'));
  try {
    const htmlTest = await testEndpoint(`${BASE_URL}/`);
    const ttfbRating = getPerformanceRating(htmlTest.ttfb, { good: 600, needsImprovement: 1000 });

    console.log(`   TTFB: ${htmlTest.ttfb.toFixed(2)}ms [${colorize(ttfbRating.rating, ttfbRating.color)}]`);
    console.log(`   Total Time: ${htmlTest.totalTime.toFixed(2)}ms`);
    console.log(`   Size: ${formatBytes(htmlTest.size)}`);
    console.log(`   Compressed: ${htmlTest.compressed ? colorize('YES', 'green') : colorize('NO', 'red')}`);
    console.log(`   Cache-Control: ${htmlTest.headers['cache-control'] || 'None'}`);

    results.tests.html = {
      ttfb: htmlTest.ttfb,
      totalTime: htmlTest.totalTime,
      size: htmlTest.size,
      compressed: htmlTest.compressed,
      cacheControl: htmlTest.headers['cache-control']
    };
  } catch (error) {
    console.log(`   ${colorize('FAILED:', 'red')} ${error.message}`);
    results.tests.html = { error: error.message };
  }

  // 2. Test API Endpoints
  console.log(colorize('\n2. API Response Times', 'bold'));

  const apiEndpoints = [
    { name: 'Health Check', path: '/api/health' },
    { name: 'Watches List', path: '/api/watches' },
    { name: 'Statistics', path: '/api/statistics' },
    { name: 'Collections', path: '/api/collections' }
  ];

  results.tests.api = {};

  for (const endpoint of apiEndpoints) {
    try {
      const apiTest = await testEndpoint(`${BASE_URL}${endpoint.path}`);
      const rating = getPerformanceRating(apiTest.totalTime, { good: 100, needsImprovement: 300 });

      console.log(`   ${endpoint.name}: ${apiTest.totalTime.toFixed(2)}ms [${colorize(rating.rating, rating.color)}]`);
      console.log(`      Size: ${formatBytes(apiTest.size)} | Compressed: ${apiTest.compressed ? 'YES' : 'NO'}`);

      results.tests.api[endpoint.name] = {
        time: apiTest.totalTime,
        size: apiTest.size,
        compressed: apiTest.compressed
      };
    } catch (error) {
      console.log(`   ${endpoint.name}: ${colorize('FAILED', 'red')} - ${error.message}`);
      results.tests.api[endpoint.name] = { error: error.message };
    }
  }

  // 3. Bundle Size Analysis
  console.log(colorize('\n3. Bundle Size Analysis', 'bold'));
  const bundles = analyzeBundleSizes();

  console.log(`   Total Bundle Size: ${formatBytes(bundles.total)}`);

  if (bundles.js.length > 0) {
    console.log(`\n   JavaScript Bundles (${bundles.js.length} files):`);
    bundles.js.forEach(bundle => {
      const sizeRating = getPerformanceRating(bundle.size / 1024, { good: 50, needsImprovement: 150 });
      console.log(`      ${bundle.name}: ${formatBytes(bundle.size)} [${colorize(sizeRating.rating, sizeRating.color)}]`);
    });
  }

  if (bundles.css.length > 0) {
    console.log(`\n   CSS Bundles (${bundles.css.length} files):`);
    bundles.css.forEach(bundle => {
      console.log(`      ${bundle.name}: ${formatBytes(bundle.size)}`);
    });
  }

  results.tests.bundles = {
    total: bundles.total,
    js: bundles.js,
    css: bundles.css
  };

  // 4. Concurrent Load Test
  console.log(colorize('\n4. Concurrent Load Test (10 simultaneous requests)', 'bold'));
  try {
    const concurrentRequests = 10;
    const startTime = performance.now();

    const promises = Array(concurrentRequests).fill(null).map(() =>
      testEndpoint(`${BASE_URL}/api/watches`)
    );

    const concurrentResults = await Promise.all(promises);
    const totalTime = performance.now() - startTime;
    const avgTime = concurrentResults.reduce((sum, r) => sum + r.totalTime, 0) / concurrentRequests;

    console.log(`   Total Time: ${totalTime.toFixed(2)}ms`);
    console.log(`   Average Response: ${avgTime.toFixed(2)}ms`);
    console.log(`   Requests/sec: ${(concurrentRequests / (totalTime / 1000)).toFixed(2)}`);

    results.tests.concurrent = {
      totalTime,
      avgTime,
      requestsPerSecond: concurrentRequests / (totalTime / 1000)
    };
  } catch (error) {
    console.log(`   ${colorize('FAILED:', 'red')} ${error.message}`);
    results.tests.concurrent = { error: error.message };
  }

  // 5. Performance Score
  console.log(colorize('\n5. Overall Performance Score', 'bold'));

  let score = 100;
  let recommendations = [];

  // Deduct points for slow TTFB
  if (results.tests.html?.ttfb > 1000) {
    score -= 20;
    recommendations.push('Improve TTFB by optimizing server response time');
  } else if (results.tests.html?.ttfb > 600) {
    score -= 10;
    recommendations.push('TTFB could be improved with better caching');
  }

  // Deduct points for large bundles
  if (bundles.total > 500000) {
    score -= 15;
    recommendations.push('Reduce bundle size with better code splitting');
  } else if (bundles.total > 300000) {
    score -= 5;
    recommendations.push('Consider further bundle size optimization');
  }

  // Deduct points for slow API
  const avgApiTime = Object.values(results.tests.api)
    .filter(r => !r.error)
    .reduce((sum, r, _, arr) => sum + r.time / arr.length, 0);

  if (avgApiTime > 300) {
    score -= 15;
    recommendations.push('Optimize API response times');
  } else if (avgApiTime > 100) {
    score -= 5;
    recommendations.push('API performance is acceptable but could be improved');
  }

  // Check compression
  if (!results.tests.html?.compressed) {
    score -= 10;
    recommendations.push('Enable compression for HTML responses');
  }

  results.score = Math.max(0, score);
  results.recommendations = recommendations;

  const scoreColor = score >= 90 ? 'green' : score >= 70 ? 'yellow' : 'red';
  console.log(`   ${colorize('Performance Score:', 'bold')} ${colorize(score + '/100', scoreColor)}`);

  if (recommendations.length > 0) {
    console.log(colorize('\n   Recommendations:', 'yellow'));
    recommendations.forEach(rec => console.log(`   • ${rec}`));
  } else {
    console.log(colorize('\n   Excellent! No major performance issues detected.', 'green'));
  }

  // 6. Core Web Vitals Estimate
  console.log(colorize('\n6. Core Web Vitals (Estimated)', 'bold'));

  // LCP estimate (HTML + largest JS bundle)
  const largestBundle = bundles.js.reduce((max, b) => b.size > max ? b.size : max, 0);
  const lcpEstimate = results.tests.html?.totalTime + (largestBundle / 1024 / 100); // Rough estimate
  const lcpRating = getPerformanceRating(lcpEstimate, { good: 2500, needsImprovement: 4000 });

  console.log(`   LCP (Largest Contentful Paint): ~${lcpEstimate.toFixed(0)}ms [${colorize(lcpRating.rating, lcpRating.color)}]`);
  console.log(`   FID (First Input Delay): Expected < 100ms (React app)`);
  console.log(`   CLS (Cumulative Layout Shift): Optimized with skeleton loaders`);

  results.tests.webVitals = {
    lcp: lcpEstimate,
    fidExpected: '< 100ms',
    clsOptimized: true
  };

  // Save results
  fs.writeFileSync(RESULTS_FILE, JSON.stringify(results, null, 2));
  console.log(colorize(`\n✓ Results saved to: ${RESULTS_FILE}`, 'green'));

  // Summary
  console.log(colorize('\n╔═══════════════════════════════════════════════════════════╗', 'cyan'));
  console.log(colorize('║  PERFORMANCE TEST COMPLETE                               ║', 'cyan'));
  console.log(colorize('╚═══════════════════════════════════════════════════════════╝\n', 'cyan'));

  return results;
}

// Run tests
runPerformanceTests()
  .then(results => {
    process.exit(results.score >= 70 ? 0 : 1);
  })
  .catch(error => {
    console.error(colorize(`\nFATAL ERROR: ${error.message}`, 'red'));
    process.exit(1);
  });