toOriginUrl method

String toOriginUrl()

Restores the original URL from a local URL.

• If the 'origin' query parameter exists, decodes it and uses it as the base.
• Replaces the path and query parameters with those from the current URL, except for the 'origin' parameter which is removed.
• If 'origin' is missing, returns itself.

Implementation

String toOriginUrl() {
  Uri uri = this.toSafeUri();
  Map<String, String> queryParameters = {...uri.queryParameters};
  if (!queryParameters.containsKey('origin')) return this;
  String? origin = queryParameters['origin'];
  if (origin != null && origin.isNotEmpty) {
    origin = utf8.decode(base64Url.decode(origin));
  }
  if (origin == null) return this;
  Uri originUri = Uri.parse(origin);
  queryParameters.remove('origin');
  originUri = originUri.replace(
    path: uri.path,
    queryParameters: queryParameters.isNotEmpty ? queryParameters : null,
  );
  return originUri.toString();
}