#!/usr/bin/env node
/**
 * Verify PWA Configuration
 * 
 * Checks that all PWA assets and configuration are present and valid.
 */
import { readFile, access } from 'fs/promises';
import { join, dirname } from 'path';
import { fileURLToPath } from 'url';

const __dirname = dirname(fileURLToPath(import.meta.url));
const publicDir = join(__dirname, '..', 'public');
const configPath = join(__dirname, '..', 'nuxt.config.ts');

let errors = [];
let warnings = [];

async function checkFileExists(path, description) {
  try {
    await access(path);
    console.log(`✓ ${description}`);
    return true;
  } catch {
    errors.push(`✗ ${description} - File not found: ${path}`);
    return false;
  }
}

async function verifyPWA() {
  console.log('🔍 Verifying PWA Configuration...\n');

  // Check icons
  console.log('Icons:');
  await checkFileExists(join(publicDir, 'icon.svg'), 'Source icon (SVG)');
  await checkFileExists(join(publicDir, 'icon-192x192.png'), 'Icon 192x192');
  await checkFileExists(join(publicDir, 'icon-512x512.png'), 'Icon 512x512');
  await checkFileExists(join(publicDir, 'icon-192x192-maskable.png'), 'Maskable icon 192x192');
  await checkFileExists(join(publicDir, 'icon-512x512-maskable.png'), 'Maskable icon 512x512');
  await checkFileExists(join(publicDir, 'favicon.ico'), 'Favicon');
  await checkFileExists(join(publicDir, 'apple-touch-icon.png'), 'Apple touch icon');

  // Check screenshots
  console.log('\nScreenshots:');
  await checkFileExists(join(publicDir, 'screenshot-mobile.png'), 'Mobile screenshot');
  await checkFileExists(join(publicDir, 'screenshot-desktop.png'), 'Desktop screenshot');

  // Check Nuxt config
  console.log('\nConfiguration:');
  const configExists = await checkFileExists(configPath, 'Nuxt config file');
  
  if (configExists) {
    const config = await readFile(configPath, 'utf-8');
    
    // Check for required PWA configuration
    if (config.includes('@vite-pwa/nuxt')) {
      console.log('✓ @vite-pwa/nuxt module configured');
    } else {
      errors.push('✗ @vite-pwa/nuxt module not found in config');
    }

    if (config.includes('registerType')) {
      console.log('✓ Service worker registration configured');
    } else {
      warnings.push('⚠ Service worker registration type not set');
    }

    if (config.includes('manifest')) {
      console.log('✓ PWA manifest configured');
    } else {
      errors.push('✗ PWA manifest configuration missing');
    }

    if (config.includes('workbox')) {
      console.log('✓ Workbox configured');
    } else {
      warnings.push('⚠ Workbox configuration missing');
    }

    // Check for important manifest fields
    if (config.includes('theme_color')) {
      console.log('✓ Theme color configured');
    } else {
      warnings.push('⚠ Theme color not configured');
    }

    if (config.includes('display')) {
      console.log('✓ Display mode configured');
    } else {
      warnings.push('⚠ Display mode not configured');
    }
  }

  // Check composables
  console.log('\nComposables:');
  await checkFileExists(join(__dirname, '..', 'composables', 'usePWAInstall.ts'), 'usePWAInstall composable');
  await checkFileExists(join(__dirname, '..', 'composables', 'useOnlineStatus.ts'), 'useOnlineStatus composable');

  // Check components
  console.log('\nComponents:');
  await checkFileExists(join(__dirname, '..', 'components', 'InstallPrompt.vue'), 'InstallPrompt component');
  await checkFileExists(join(__dirname, '..', 'components', 'OfflineBanner.vue'), 'OfflineBanner component');

  // Check pages
  console.log('\nPages:');
  await checkFileExists(join(__dirname, '..', 'pages', 'offline.vue'), 'Offline fallback page');

  // Print summary
  console.log('\n' + '='.repeat(60));
  
  if (errors.length === 0 && warnings.length === 0) {
    console.log('✅ PWA configuration is valid!');
    console.log('\nNext steps:');
    console.log('1. Run `npm run dev` and test in browser');
    console.log('2. Check DevTools → Application → Manifest');
    console.log('3. Test offline functionality');
    console.log('4. Run Lighthouse PWA audit');
    return 0;
  }

  if (warnings.length > 0) {
    console.log('\n⚠️  Warnings:');
    warnings.forEach(w => console.log(w));
  }

  if (errors.length > 0) {
    console.log('\n❌ Errors:');
    errors.forEach(e => console.log(e));
    console.log('\nPWA configuration is incomplete. Please fix the errors above.');
    return 1;
  }

  console.log('\n✅ PWA configuration is mostly valid (with warnings).');
  return 0;
}

verifyPWA()
  .then(code => process.exit(code))
  .catch(error => {
    console.error('\n❌ Verification failed:', error.message);
    process.exit(1);
  });