stack_wallet/lib/wallets/wallet/impl/litecoin_wallet.dart

import 'package:isar/isar.dart';
import 'package:stackwallet/models/isar/models/blockchain_data/address.dart';
import 'package:stackwallet/utilities/amount/amount.dart';
import 'package:stackwallet/wallets/crypto_currency/coins/litecoin.dart';
import 'package:stackwallet/wallets/crypto_currency/crypto_currency.dart';
import 'package:stackwallet/wallets/wallet/intermediate/bip39_hd_wallet.dart';
import 'package:stackwallet/wallets/wallet/wallet_mixin_interfaces/coin_control_interface.dart';
import 'package:stackwallet/wallets/wallet/wallet_mixin_interfaces/electrumx_interface.dart';
import 'package:stackwallet/wallets/wallet/wallet_mixin_interfaces/ordinals_interface.dart';
import 'package:tuple/tuple.dart';

class LitecoinWallet extends Bip39HDWallet
    with ElectrumXInterface, CoinControlInterface, OrdinalsInterface {
  @override
  int get isarTransactionVersion => 1; // TODO actually set this to 2

  LitecoinWallet(CryptoCurrencyNetwork network) : super(Litecoin(network));

  @override
  FilterOperation? get changeAddressFilterOperation =>
      FilterGroup.and(standardChangeAddressFilters);

  @override
  FilterOperation? get receivingAddressFilterOperation =>
      FilterGroup.and(standardReceivingAddressFilters);

  // ===========================================================================

  @override
  Future<List<Address>> fetchAddressesForElectrumXScan() async {
    final allAddresses = await mainDB
        .getAddresses(walletId)
        .filter()
        .not()
        .group(
          (q) => q
              .typeEqualTo(AddressType.nonWallet)
              .or()
              .subTypeEqualTo(AddressSubType.nonWallet),
        )
        .findAll();
    return allAddresses;
  }

  // ===========================================================================

  @override
  Future<void> updateTransactions() async {
    final currentChainHeight = await fetchChainHeight();

    // TODO: [prio=med] switch to V2 transactions
    final data = await fetchTransactionsV1(
      addresses: await fetchAddressesForElectrumXScan(),
      currentChainHeight: currentChainHeight,
    );

    await mainDB.addNewTransactionData(
      data
          .map((e) => Tuple2(
                e.transaction,
                e.address,
              ))
          .toList(),
      walletId,
    );
  }

  @override
  Amount roughFeeEstimate(int inputCount, int outputCount, int feeRatePerKB) {
    return Amount(
      rawValue: BigInt.from(
          ((42 + (272 * inputCount) + (128 * outputCount)) / 4).ceil() *
              (feeRatePerKB / 1000).ceil()),
      fractionDigits: cryptoCurrency.fractionDigits,
    );
  }

  @override
  int estimateTxFee({required int vSize, required int feeRatePerKB}) {
    return vSize * (feeRatePerKB / 1000).ceil();
  }
//
// @override
// Future<TxData> coinSelection({required TxData txData}) async {
//   final isCoinControl = txData.utxos != null;
//   final isSendAll = txData.amount == info.cachedBalance.spendable;
//
//   final utxos =
//       txData.utxos?.toList() ?? await mainDB.getUTXOs(walletId).findAll();
//
//   final currentChainHeight = await chainHeight;
//   final List<UTXO> spendableOutputs = [];
//   int spendableSatoshiValue = 0;
//
//   // Build list of spendable outputs and totaling their satoshi amount
//   for (final utxo in utxos) {
//     if (utxo.isBlocked == false &&
//         utxo.isConfirmed(currentChainHeight, cryptoCurrency.minConfirms) &&
//         utxo.used != true) {
//       spendableOutputs.add(utxo);
//       spendableSatoshiValue += utxo.value;
//     }
//   }
//
//   if (isCoinControl && spendableOutputs.length < utxos.length) {
//     throw ArgumentError("Attempted to use an unavailable utxo");
//   }
//
//   if (spendableSatoshiValue < txData.amount!.raw.toInt()) {
//     throw Exception("Insufficient balance");
//   } else if (spendableSatoshiValue == txData.amount!.raw.toInt() &&
//       !isSendAll) {
//     throw Exception("Insufficient balance to pay transaction fee");
//   }
//
//   if (isCoinControl) {
//   } else {
//     final selection = cs.coinSelection(
//       spendableOutputs
//           .map((e) => cs.InputModel(
//                 i: e.vout,
//                 txid: e.txid,
//                 value: e.value,
//                 address: e.address,
//               ))
//           .toList(),
//       txData.recipients!
//           .map((e) => cs.OutputModel(
//                 address: e.address,
//                 value: e.amount.raw.toInt(),
//               ))
//           .toList(),
//       txData.feeRateAmount!,
//       10, // TODO: ???????????????????????????????
//     );
//
//     // .inputs and .outputs will be null if no solution was found
//     if (selection.inputs!.isEmpty || selection.outputs!.isEmpty) {
//       throw Exception("coin selection failed");
//     }
//   }
// }
}