validateUTXOAddress function

Implementation

(AddressError?, UTXONetworkType?) validateUTXOAddress({
  required String address,
  required CoinEntity? token,
}) {
  if (address.trim().length != address.length) {
    return (AddressError.WHITESPACE, null);
  }

  try {
    // this is the main-check: see if an output-script can be generated
    P2Hash(address).publicKeyScript;
  } catch (e) {
    if (address.startsWith("0x")) {
      return (AddressError.WRONG_CHAIN, null);
    } else if (e.toString().contains("checksum")) {
      return (AddressError.INVALID_CHECKSUM, null);
    } else {
      return (AddressError.INVALID, null);
    }
  }

  if (token?.isUTXO ?? false) if (!address.startsWithAny(
      UTXO_Network_List.singleWhereOrNull((net) => net.coin == token)!
          .addressPrefixes
          .values
          .toList())) {
    return (AddressError.WRONG_CHAIN, null);
  }

  final network = UTXO_Network_List.singleWhereOrNull(
    (net) => address.startsWithAny(net.addressPrefixes.values.toList()),
  );

  return (null, network); // successful validation
}