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update coinSelection to handle custom list of UTXOs

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This commit is contained in:
julian 2023-03-08 09:47:35 -06:00
parent be7fcbe5a0
commit 4aae0fc76e
1 changed files with 65 additions and 36 deletions
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101
lib/services/coins/bitcoin/bitcoin_wallet.dart
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@ -1112,6 +1112,7 @@ class BitcoinWallet extends CoinServiceAPI
try {
final feeRateType = args?["feeRate"];
final feeRateAmount = args?["feeRateAmount"];
final utxos = args?["UTXOs"] as Set<isar_models.UTXO>?;
if (feeRateType is FeeRateType || feeRateAmount is int) {
late final int rate;
if (feeRateType is FeeRateType) {
@ -1139,8 +1140,14 @@ class BitcoinWallet extends CoinServiceAPI
isSendAll = true;
}
final txData =
await coinSelection(satoshiAmount, rate, address, isSendAll);
final txData = await coinSelection(
satoshiAmountToSend: satoshiAmount,
selectedTxFeeRate: rate,
recipientAddress: address,
isSendAll: isSendAll,
utxos: utxos?.toList(),
coinControl: utxos is List<isar_models.UTXO>,
);
Logging.instance.log("prepare send: $txData", level: LogLevel.Info);
try {
@ -2279,11 +2286,12 @@ class BitcoinWallet extends CoinServiceAPI
/// with [satoshiAmountToSend] and [selectedTxFeeRate]. If so, it will call buildTrasaction() and return
/// a map containing the tx hex along with other important information. If not, then it will return
/// an integer (1 or 2)
dynamic coinSelection(
int satoshiAmountToSend,
int selectedTxFeeRate,
String _recipientAddress,
bool isSendAll, {
dynamic coinSelection({
required int satoshiAmountToSend,
required int selectedTxFeeRate,
required String recipientAddress,
required bool coinControl,
required bool isSendAll,
int additionalOutputs = 0,
List<isar_models.UTXO>? utxos,
}) async {
@ -2295,18 +2303,26 @@ class BitcoinWallet extends CoinServiceAPI
int spendableSatoshiValue = 0;
// Build list of spendable outputs and totaling their satoshi amount
for (var i = 0; i < availableOutputs.length; i++) {
if (availableOutputs[i].isBlocked == false &&
availableOutputs[i]
.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) ==
true) {
spendableOutputs.add(availableOutputs[i]);
spendableSatoshiValue += availableOutputs[i].value;
for (final utxo in availableOutputs) {
if (utxo.isBlocked == false &&
utxo.isConfirmed(currentChainHeight, MINIMUM_CONFIRMATIONS) &&
utxo.used != true) {
spendableOutputs.add(utxo);
spendableSatoshiValue += utxo.value;
}
}
// sort spendable by age (oldest first)
spendableOutputs.sort((a, b) => b.blockTime!.compareTo(a.blockTime!));
if (coinControl) {
if (spendableOutputs.length < availableOutputs.length) {
throw ArgumentError("Attempted to use an unavailable utxo");
}
}
// don't care about sorting if using all utxos
if (!coinControl) {
// sort spendable by age (oldest first)
spendableOutputs.sort((a, b) => b.blockTime!.compareTo(a.blockTime!));
}
Logging.instance.log("spendableOutputs.length: ${spendableOutputs.length}",
level: LogLevel.Info);
@ -2337,19 +2353,26 @@ class BitcoinWallet extends CoinServiceAPI
int inputsBeingConsumed = 0;
List<isar_models.UTXO> utxoObjectsToUse = [];
for (var i = 0;
satoshisBeingUsed < satoshiAmountToSend && i < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[i]);
satoshisBeingUsed += spendableOutputs[i].value;
inputsBeingConsumed += 1;
}
for (int i = 0;
i < additionalOutputs && inputsBeingConsumed < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[inputsBeingConsumed]);
satoshisBeingUsed += spendableOutputs[inputsBeingConsumed].value;
inputsBeingConsumed += 1;
if (!coinControl) {
for (var i = 0;
satoshisBeingUsed < satoshiAmountToSend &&
i < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[i]);
satoshisBeingUsed += spendableOutputs[i].value;
inputsBeingConsumed += 1;
}
for (int i = 0;
i < additionalOutputs &&
inputsBeingConsumed < spendableOutputs.length;
i++) {
utxoObjectsToUse.add(spendableOutputs[inputsBeingConsumed]);
satoshisBeingUsed += spendableOutputs[inputsBeingConsumed].value;
inputsBeingConsumed += 1;
}
} else {
satoshisBeingUsed = spendableSatoshiValue;
utxoObjectsToUse = spendableOutputs;
}
Logging.instance
@ -2360,7 +2383,7 @@ class BitcoinWallet extends CoinServiceAPI
.log('utxoObjectsToUse: $utxoObjectsToUse', level: LogLevel.Info);
// numberOfOutputs' length must always be equal to that of recipientsArray and recipientsAmtArray
List<String> recipientsArray = [_recipientAddress];
List<String> recipientsArray = [recipientAddress];
List<int> recipientsAmtArray = [satoshiAmountToSend];
// gather required signing data
@ -2373,7 +2396,7 @@ class BitcoinWallet extends CoinServiceAPI
final int vSizeForOneOutput = (await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
recipients: [recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
int feeForOneOutput = estimateTxFee(
@ -2409,7 +2432,7 @@ class BitcoinWallet extends CoinServiceAPI
vSizeForOneOutput = (await buildTransaction(
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [_recipientAddress],
recipients: [recipientAddress],
satoshiAmounts: [satoshisBeingUsed - 1],
))["vSize"] as int;
} catch (e) {
@ -2423,7 +2446,7 @@ class BitcoinWallet extends CoinServiceAPI
utxosToUse: utxoObjectsToUse,
utxoSigningData: utxoSigningData,
recipients: [
_recipientAddress,
recipientAddress,
await _getCurrentAddressForChain(
1, DerivePathTypeExt.primaryFor(coin)),
],
@ -2628,9 +2651,15 @@ class BitcoinWallet extends CoinServiceAPI
level: LogLevel.Warning);
// try adding more outputs
if (spendableOutputs.length > inputsBeingConsumed) {
return coinSelection(satoshiAmountToSend, selectedTxFeeRate,
_recipientAddress, isSendAll,
additionalOutputs: additionalOutputs + 1, utxos: utxos);
return coinSelection(
satoshiAmountToSend: satoshiAmountToSend,
selectedTxFeeRate: selectedTxFeeRate,
recipientAddress: recipientAddress,
isSendAll: isSendAll,
additionalOutputs: additionalOutputs + 1,
utxos: utxos,
coinControl: coinControl,
);
}
return 2;
}