cake_wallet/lib/entities/openalias_record.dart

import 'package:basic_utils/basic_utils.dart';

class OpenaliasRecord {
  OpenaliasRecord({
    required this.address,
    required this.name,
    required this.description,
  });

  final String name;
  final String address;
  final String description;

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

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

    return formattedName;
  }

  static Future<List<RRecord>?> lookupOpenAliasRecord(String name) async {
    try {
      final txtRecord = await DnsUtils.lookupRecord(name, RRecordType.TXT, dnssec: true);

      return txtRecord;
    } catch (e) {
      print("${e.toString()}");
      return null;
    }
  }

  static OpenaliasRecord fetchAddressAndName({
    required String formattedName,
    required String ticker,
    required List<RRecord> txtRecord,
  })  {
    String address = formattedName;
    String name = formattedName;
    String note = '';

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

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

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

        address = dataList
            .where((item) => (item.contains("recipient_address")))
            .toString()
            .replaceAll("oa1:$ticker 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=", "");
        }

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

        if (description.isNotEmpty) {
          note = description.replaceAll("tx_description=", "");
        }

        break;
      }

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