import path from 'path';
import unzipper from 'unzipper';

/**
 * 解压云函数包，如果已经存在根目录就是云函数名称直接解压，否则增加一层
 */
async function unzipCloudFunction(name: string, src: string, dist: string): Promise<string> {
  const directory = await unzipper.Open.file(src);

  // 检测下载包里面有没有程序入口
  const entry = directory.files.find((item) => {
    return item.path === `${name}/index.js`;
  });

  const functionDist = entry ? dist : path.join(dist, name);

  await directory.extract({
    path: functionDist,
  });

  return functionDist;
}

export default unzipCloudFunction;