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

function generateIndexFile(dirPath) {
  const files = fs.readdirSync(dirPath).filter(file =>
    file.endsWith('.js') && file !== 'index.js'
  );

  if (files.length === 0) return;

  let content = '\/\/ Auto Generated index.js\n';

  // Import each file and export it as a namespace
  files.forEach(file => {
    const moduleName = path.basename(file, '.js');
    content += `export * as ${moduleName} from './${file}';\n`;
  });

  const indexPath = path.join(dirPath, 'index.js');
  fs.writeFileSync(indexPath, content);
  console.log(`Generated index.js for: ${dirPath}`);
}

// Generate index for each subdirectory in src
const srcDir = path.join(__dirname, '..', 'src');
const srcItems = fs.readdirSync(srcDir);

srcItems.forEach(item => {
  const itemPath = path.join(srcDir, item);
  if (fs.statSync(itemPath).isDirectory()) {
    generateIndexFile(itemPath);
  }
});

// Generate index for src directory that imports subdirectories
let srcContent = '\/\/ Auto Generated index.js\n';

// Add imports for each subdirectory
srcItems.forEach(item => {
  const itemPath = path.join(srcDir, item);
  if (fs.statSync(itemPath).isDirectory() ) { // && item !== 'utils'
    // Check if the subdirectory has JS files to determine if we should export it
    const subDirFiles = fs.readdirSync(itemPath).filter(file =>
      file.endsWith('.js') && file !== 'index.js'
    );

    if (subDirFiles.length > 0) {
      srcContent += `export * as ${item} from './${item}/index.js';\n`;
    }
  }
});

// Add imports for files in the utils directory
const utilsDir = path.join(srcDir, 'utils');
if (fs.existsSync(utilsDir)) {
  generateIndexFile(utilsDir);

  // Export individual files from utils
  const utilsFiles = fs.readdirSync(utilsDir).filter(file =>
    file.endsWith('.js') && file !== 'index.js'
  );

  utilsFiles.forEach(file => {
    const moduleName = path.basename(file, '.js');
    srcContent += `export * as ${moduleName} from './utils/${file}';\n`;
  });
}

// Write the src index.js file
const srcIndexPath = path.join(srcDir, 'index.js');
fs.writeFileSync(srcIndexPath, srcContent);
console.log(`Generated index.js for: ${srcDir}`);