getBNBTransactions method

Implementation

@override
Future<List<Map<String, dynamic>>> getBNBTransactions(String address) async {
  try {
    final currentBlock = await _client.getBlockNumber();
    final fromBlock = currentBlock - 1000; // 1000개 블록으로 줄임
    List<Map<String, dynamic>> transactions = [];

    // 작은 범위로 나누어 조회
    for (int i = fromBlock; i < currentBlock; i += 10) {
      final toBlock = (i + 10 > currentBlock) ? currentBlock : i + 10;
      final logs = await _client.getLogs(
        FilterOptions(
          fromBlock: BlockNum.exact(i),
          toBlock: BlockNum.exact(toBlock),
          address: EthereumAddress.fromHex(address),
          topics: null,
        ),
      );

      for (var log in logs) {
        if (log.address!.hex.toLowerCase() == address.toLowerCase() ||
            log.topics!.any((topic) => topic!.contains(address.toLowerCase()))) {
          transactions.add({
            'hash': log.transactionHash,
            'from': log.address!.hex,
            'blockNumber': log.blockNum.toString(),
            'timestamp': await getBlockTimestamp(log.blockNum.toString()),
            'value': log.data,
          });
        }
      }

      // API 호출 제한을 피하기 위한 지연
      await Future.delayed(Duration(milliseconds: 1000));
    }

    return transactions;
  } catch (e) {
    throw Exception('Failed to get BNB transactions: ${e.toString()}');
  }
}