/**
 * Clean bundler for NOSTR_LOGIN_LITE
 * Removes problematic files and recreates bundle
 */

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

async function createCleanBundle() {
  // First, remove the old bundle if it exists
  const outputPath = path.join(__dirname, 'nostr-login-lite.bundle.js');
  try {
    if (fs.existsSync(outputPath)) {
      fs.unlinkSync(outputPath);
    }
  } catch (e) {
    console.log('No old bundle to remove');
  }

  const mainFile = path.join(__dirname, 'nostr-login-lite.js');
  const nip46File = path.join(__dirname, 'core/nip46-client.js');
  const modalFile = path.join(__dirname, 'ui/modal.js');

  // Start with a clean header
  let bundle = `/**
 * NOSTR_LOGIN_LITE
 * Single-file Nostr authentication library
 * Generated on: ${new Date().toISOString()}
 */

`;

  // Add section markers and combine files
  const files = [
    { path: modalFile, name: 'modal.js' },
    { path: nip46File, name: 'nip46-client.js' },
    { path: mainFile, name: 'nostr-login-lite.js' }
  ];

  for (const file of files) {
    if (fs.existsSync(file.path)) {
      const content = fs.readFileSync(file.path, 'utf8');

      bundle += `\n// ======================================\n`;
      bundle += `// ${file.name}\n`;
      bundle += `// ======================================\n\n`;

      // Clean the content by removing initial header comments
      let lines = content.split('\n');
      let contentStartIndex = 0;

      // Skip the first 10 lines if they contain file headers
      for (let i = 0; i < Math.min(10, lines.length); i++) {
        const line = lines[i].trim();
        if (line.startsWith('/**') || line.startsWith('*') || line.startsWith('/*') || line.startsWith('//') ||
            line.includes('Copyright') || line.includes('@license') || line.includes('Licensed') || line.includes('©')) {
          contentStartIndex = i + 1;
        }
      }

      if (contentStartIndex > 0) {
        lines = lines.slice(contentStartIndex);
      }

      bundle += lines.join('\n');
      bundle += '\n\n';

      console.log(`Added ${file.name}`);
    } else {
      console.warn(`File not found: ${file.path}`);
    }
  }

  // Write the bundled file
  fs.writeFileSync(outputPath, bundle, 'utf8');

  const sizeKB = (bundle.length / 1024).toFixed(2);
  console.log(`\n✅ Clean bundle created: ${outputPath}`);
  console.log(`📏 Bundle size: ${sizeKB} KB`);
  console.log(`📄 Total lines: ${bundle.split('\n').length}`);

  // Verify the bundle starts correctly
  const firstLines = bundle.split('\n').slice(0, 20).join('\n');
  console.log('\n📋 First 20 lines:');
  console.log(firstLines);

  return bundle;
}

if (typeof module !== 'undefined' && module.exports) {
  module.exports = { createCleanBundle };
}

// Run if called directly
if (typeof require !== 'undefined' && require.main === module) {
  createCleanBundle().catch(console.error);
}