cake_wallet/lib/entities/openalias_record.dart

import 'package:basic_utils/basic_utils.dart';

class OpenaliasRecord {

  OpenaliasRecord({this.address, this.name});

  final String name;
  final String address;

  static String formatDomainName(String name) {
    String formattedName = name;

    if (name.contains("@")) {
      formattedName = name.replaceAll("@", ".");
    }

    return formattedName;
  }

  static Future<OpenaliasRecord> fetchAddressAndName(String formattedName) async {
    String address = formattedName;
    String name = formattedName;

    if (formattedName.contains(".")) {
      try {
        final txtRecord = await DnsUtils.lookupRecord(formattedName, RRecordType.TXT, dnssec: true);

        if (txtRecord != null) {

          for (RRecord element in txtRecord) {
            String record = element.data;

            if (record.contains("oa1:xmr") && record.contains("recipient_address")) {
              record = record.replaceAll('\"', "");

              final dataList = record.split(";");

              address = dataList.where((item) => (item.contains("recipient_address")))
                  .toString().replaceAll("oa1:xmr recipient_address=", "")
                  .replaceAll("(", "").replaceAll(")", "").trim();

              final recipientName = dataList.where((item) => (item.contains("recipient_name"))).toString()
                  .replaceAll("(", "").replaceAll(")", "").trim();

              if (recipientName.isNotEmpty) {
                name = recipientName.replaceAll("recipient_name=", "");
              }

              break;
            }
          }
        }
      } catch (e) {
        print("${e.toString()}");
      }
    }

    return OpenaliasRecord(address: address, name: name);
  }

}