#!/usr/bin/env node

const BASE_URL = process.env.BASE_URL || 'http://localhost:4000';

async function testMetadataEndpoint() {
  console.log('\n=== Testing /api/vault/metadata (Metadata-First) ===');
  
  try {
    const start = performance.now();
    const response = await fetch(`${BASE_URL}/api/vault/metadata`);
    const data = await response.json();
    const duration = performance.now() - start;
    
    const payloadSize = JSON.stringify(data).length;
    const payloadSizeMB = (payloadSize / 1024 / 1024).toFixed(2);
    const payloadSizeKB = (payloadSize / 1024).toFixed(2);
    
    console.log(`✓ Loaded ${data.length} notes in ${duration.toFixed(2)}ms`);
    console.log(`✓ Payload size: ${payloadSizeMB}MB (${payloadSizeKB}KB)`);
    console.log(`✓ Average per note: ${(payloadSize / data.length).toFixed(0)} bytes`);
    
    return { count: data.length, duration, payloadSize };
  } catch (error) {
    console.error('✗ Error:', error.message);
    return null;
  }
}

async function testOldVaultEndpoint() {
  console.log('\n=== Testing /api/vault (Full Load - OLD) ===');
  
  try {
    const start = performance.now();
    const response = await fetch(`${BASE_URL}/api/vault`);
    const data = await response.json();
    const duration = performance.now() - start;
    
    const payloadSize = JSON.stringify(data).length;
    const payloadSizeMB = (payloadSize / 1024 / 1024).toFixed(2);
    
    console.log(`✓ Loaded ${data.notes?.length || 0} notes in ${duration.toFixed(2)}ms`);
    console.log(`✓ Payload size: ${payloadSizeMB}MB`);
    console.log(`✓ Average per note: ${(payloadSize / (data.notes?.length || 1)).toFixed(0)} bytes`);
    
    return { count: data.notes?.length || 0, duration, payloadSize };
  } catch (error) {
    console.error('✗ Error:', error.message);
    return null;
  }
}

async function testFileListEndpoint() {
  console.log('\n=== Testing /api/files/list (Meilisearch Metadata) ===');
  
  try {
    const start = performance.now();
    const response = await fetch(`${BASE_URL}/api/files/list`);
    const data = await response.json();
    const duration = performance.now() - start;
    
    const payloadSize = JSON.stringify(data).length;
    const payloadSizeMB = (payloadSize / 1024 / 1024).toFixed(2);
    
    console.log(`✓ Loaded ${data.length} files in ${duration.toFixed(2)}ms`);
    console.log(`✓ Payload size: ${payloadSizeMB}MB`);
    console.log(`✓ Average per file: ${(payloadSize / data.length).toFixed(0)} bytes`);
    
    return { count: data.length, duration, payloadSize };
  } catch (error) {
    console.error('✗ Error:', error.message);
    return null;
  }
}

async function runComparison() {
  console.log('╔════════════════════════════════════════════════════════════╗');
  console.log('║  Performance Comparison: Metadata-First vs Full Load       ║');
  console.log('╚════════════════════════════════════════════════════════════╝');
  
  const metadata = await testMetadataEndpoint();
  const fileList = await testFileListEndpoint();
  const full = await testOldVaultEndpoint();
  
  if (metadata && full) {
    console.log('\n╔════════════════════════════════════════════════════════════╗');
    console.log('║  Summary & Improvements                                    ║');
    console.log('╚════════════════════════════════════════════════════════════╝');
    
    const speedImprovement = ((full.duration / metadata.duration - 1) * 100).toFixed(0);
    const sizeImprovement = ((full.payloadSize / metadata.payloadSize - 1) * 100).toFixed(0);
    
    console.log(`\n📊 Metadata Endpoint (NEW):`);
    console.log(`   Duration: ${metadata.duration.toFixed(2)}ms`);
    console.log(`   Payload: ${(metadata.payloadSize / 1024).toFixed(0)}KB`);
    
    if (fileList) {
      console.log(`\n📊 Files List Endpoint (Meilisearch):`);
      console.log(`   Duration: ${fileList.duration.toFixed(2)}ms`);
      console.log(`   Payload: ${(fileList.payloadSize / 1024).toFixed(0)}KB`);
    }
    
    console.log(`\n📊 Full Vault Endpoint (OLD):`);
    console.log(`   Duration: ${full.duration.toFixed(2)}ms`);
    console.log(`   Payload: ${(full.payloadSize / 1024 / 1024).toFixed(2)}MB`);
    
    console.log(`\n✅ Performance Improvements:`);
    console.log(`   Speed: ${speedImprovement}% faster`);
    console.log(`   Size: ${sizeImprovement}% smaller`);
    console.log(`   Startup time reduced from ~${full.duration.toFixed(0)}ms to ~${metadata.duration.toFixed(0)}ms`);
  }
}

runComparison().catch(console.error);