#!/usr/bin/env node
/**
 * Test Optimization Demonstration
 * 
 * Quick demonstration of the optimized test approach vs traditional approach.
 * This script shows the key differences and benefits of the optimization strategy.
 */

const { exec } = require('child_process');
const path = require('path');

console.log('🚀 Test Optimization Demonstration');
console.log('====================================\n');

console.log('📋 TRADITIONAL APPROACH PATTERN:');
console.log('  ❌ Each test method makes individual API calls');
console.log('  ❌ Duplicate data fetching across test cases');
console.log('  ❌ Higher API rate limit consumption');
console.log('  ❌ Slower test execution due to network overhead\n');

console.log('📋 OPTIMIZED APPROACH PATTERN:');
console.log('  ✅ Single API call in beforeAll() shared across all tests');
console.log('  ✅ Cached data reused for filtering and analysis');
console.log('  ✅ Minimal API rate limit consumption');
console.log('  ✅ Faster test execution with maintained coverage\n');

console.log('🔍 Running optimized test suite demonstration...\n');

const testCommand = 'npm test -- tests/firewalla/client-device-optimized.test.ts --verbose';

exec(testCommand, { cwd: path.resolve(__dirname, '..') }, (error, stdout, stderr) => {
  if (error) {
    console.error('❌ Test execution failed:', error.message);
    return;
  }

  // Extract key metrics from the output
  const output = stdout + stderr;
  
  // Extract performance metrics
  const apiCallsMatch = output.match(/Total API calls: (\d+)/);
  const testTimeMatch = output.match(/Total test time: (\d+)ms/);
  const testsPassedMatch = output.match(/Tests:\s+(\d+) passed/);
  
  const apiCalls = apiCallsMatch ? parseInt(apiCallsMatch[1]) : 'N/A';
  const testTime = testTimeMatch ? parseInt(testTimeMatch[1]) : 'N/A';
  const testsPassed = testsPassedMatch ? parseInt(testsPassedMatch[1]) : 'N/A';

  console.log('📊 OPTIMIZATION RESULTS:');
  console.log('========================');
  console.log(`✅ Tests Passed: ${testsPassed}`);
  console.log(`⚡ API Calls Used: ${apiCalls} (shared load)`);
  console.log(`🕐 Execution Time: ${testTime}ms`);
  console.log(`📈 Test Coverage: Comprehensive device operations`);
  
  console.log('\n🎯 KEY BENEFITS DEMONSTRATED:');
  console.log('  • Single shared API call eliminates redundancy');
  console.log('  • All test scenarios covered with cached data');
  console.log('  • Fast execution with minimal network overhead');
  console.log('  • Maintainable test isolation and reliability');
  
  console.log('\n💡 IMPLEMENTATION PATTERN:');
  console.log('```typescript');
  console.log('describe("Optimized Test Suite", () => {');
  console.log('  let sharedData: any[];');
  console.log('  ');
  console.log('  beforeAll(async () => {');
  console.log('    // SINGLE API CALL - shared across all tests');
  console.log('    const cache = await TestDataCacheManager.loadSharedTestData(client);');
  console.log('    sharedData = cache.devices;');
  console.log('  });');
  console.log('  ');
  console.log('  it("test scenario 1", () => {');
  console.log('    // Use cached data - NO additional API call');
  console.log('    const filtered = TestDataUtils.filterDevices(sharedData, criteria);');
  console.log('    expect(filtered).toHaveLength(expected);');
  console.log('  });');
  console.log('});');
  console.log('```');
  
  console.log('\n🏆 OPTIMIZATION SUCCESS:');
  console.log('  This approach can be applied to other test suites for similar benefits:');
  console.log('  • Alarm tests: Share alarm data across filtering scenarios');
  console.log('  • Flow tests: Cache flow data for analysis and reporting tests');
  console.log('  • Rule tests: Share rule configurations across validation tests');
  
  console.log('\n🚀 Ready for production use!');
  console.log('  Use OPTIMIZE_TESTS=true to enable optimized patterns in CI/CD');
});

console.log('⏳ Running test suite...');