packages/frontend/lib/features/shared/utils/browser_download.dart

import 'dart:js_interop';
import 'dart:typed_data';

import 'package:web/web.dart' as web;

/// Triggers a browser file download by creating a temporary anchor element.
void triggerBrowserDownload(Uint8List bytes, String filename) {
  final jsArray = [bytes.toJS].toJS;
  final blob = web.Blob(jsArray, web.BlobPropertyBag(type: 'application/zip'));
  final url = web.URL.createObjectURL(blob);
  final anchor = web.document.createElement('a') as web.HTMLAnchorElement;
  anchor.href = url;
  anchor.download = filename;
  web.document.body!.appendChild(anchor);
  anchor.click();
  web.document.body!.removeChild(anchor);
  web.URL.revokeObjectURL(url);
}