import compression from 'vite-plugin-compression';

export default (env: any) => {
  // CI 可通过空值或空格关闭：VITE_BUILD_COMPRESS=
  const raw = String(env?.VITE_BUILD_COMPRESS ?? '').trim();
  const plugin: any[] = [];
  if (raw) {
    const compressList = raw.split(',').map((s: string) => s.trim()).filter(Boolean);
    if (compressList.includes('gzip')) {
      // http://doc.ruoyi.vip/ruoyi-vue/other/faq.html#使用gzip解压缩静态文件
      plugin.push(
        compression({
          ext: '.gz',
          deleteOriginFile: false,
          // 小于 10KB 的分包压缩收益很小，跳过可明显缩短收尾时间
          threshold: 10 * 1024,
          verbose: false
        })
      );
    }
    if (compressList.includes('brotli')) {
      plugin.push(
        compression({
          ext: '.br',
          algorithm: 'brotliCompress',
          deleteOriginFile: false
        })
      );
    }
  }
  return plugin;
};