import * as fs from 'fs';
import * as path from 'path';

const rootDir = path.resolve(__dirname, '..');
const destDir = path.resolve(rootDir, 'lib/commonjs');
const pluginDir = path.resolve(rootDir, 'plugin');
const appPluginFile = path.resolve(rootDir, 'app.plugin.js');

function copyFileSync(source: string, target: string) {
  let targetFile = target;

  // If target is a directory, a new file with the same name will be created
  if (fs.existsSync(target)) {
    if (fs.lstatSync(target).isDirectory()) {
      targetFile = path.join(target, path.basename(source));
    }
  }

  fs.writeFileSync(targetFile, fs.readFileSync(source));
}

function copyFolderRecursiveSync(source: string, target: string) {
  let files = [];

  // Check if folder needs to be created or integrated
  const targetFolder = path.join(target, path.basename(source));
  if (!fs.existsSync(targetFolder)) {
    fs.mkdirSync(targetFolder);
  }

  // Copy
  if (fs.lstatSync(source).isDirectory()) {
    files = fs.readdirSync(source);
    files.forEach((file) => {
      const curSource = path.join(source, file);
      if (fs.lstatSync(curSource).isDirectory()) {
        copyFolderRecursiveSync(curSource, targetFolder);
      } else {
        copyFileSync(curSource, targetFolder);
      }
    });
  }
}

// Ensure destination directory exists
if (!fs.existsSync(destDir)) {
  fs.mkdirSync(destDir, { recursive: true });
}

// Copy app.plugin.js
copyFileSync(appPluginFile, destDir);

// Copy plugin folder
copyFolderRecursiveSync(pluginDir, destDir);

console.log('Files copied successfully.');