mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-12-23 03:59:23 +00:00
update transaction build function
This commit is contained in:
parent
e97a3142fd
commit
282e34d0ea
5 changed files with 138 additions and 42 deletions
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@ -4,6 +4,7 @@ import 'package:cw_bitcoin/bitcoin_address_record.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_credentials.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_no_inputs_exception.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_no_inputs_exception.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_priority.dart';
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import 'package:cw_bitcoin/bitcoin_transaction_wrong_balance_exception.dart';
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import 'package:cw_bitcoin/bitcoin_unspent.dart';
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import 'package:cw_bitcoin/bitcoin_unspent.dart';
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import 'package:cw_bitcoin/electrum_balance.dart';
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import 'package:cw_bitcoin/electrum_balance.dart';
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import 'package:cw_bitcoin/electrum_wallet.dart';
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import 'package:cw_bitcoin/electrum_wallet.dart';
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@ -110,64 +111,149 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
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Future<PendingBitcoinCashTransaction> createTransaction(Object credentials) async {
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Future<PendingBitcoinCashTransaction> createTransaction(Object credentials) async {
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const minAmount = 546;
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const minAmount = 546;
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final transactionCredentials = credentials as BitcoinTransactionCredentials;
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final transactionCredentials = credentials as BitcoinTransactionCredentials;
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final inputs = <BitcoinUnspent>[];
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final outputs = transactionCredentials.outputs;
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final outputs = transactionCredentials.outputs;
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final hasMultiDestination = outputs.length > 1;
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final hasMultiDestination = outputs.length > 1;
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final builder = bitbox.Bitbox.transactionBuilder(testnet: false);
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var allInputsAmount = 0;
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var allInputsAmount = 0;
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var inputs = <BitcoinUnspent>[];
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if (unspentCoins.isEmpty) await updateUnspent();
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if (unspentCoins.isEmpty) await updateUnspent();
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inputs = unspentCoins.where((element) => element.isSending).toList();
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for (final utx in unspentCoins) {
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allInputsAmount = inputs.fold(0, (prev, element) => prev + element.value);
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if (utx.isSending) {
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allInputsAmount += utx.value;
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inputs.add(utx);
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}
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}
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if (inputs.isEmpty) throw BitcoinTransactionNoInputsException();
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if (inputs.isEmpty) throw BitcoinTransactionNoInputsException();
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inputs.forEach((BitcoinUnspent utx) => builder.addInput(utx.hash, utx.vout));
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final allAmountFee = transactionCredentials.feeRate != null
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final allAmountFee = transactionCredentials.feeRate != null
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? feeAmountWithFeeRate(transactionCredentials.feeRate!, inputs.length, outputs.length)
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? feeAmountWithFeeRate(transactionCredentials.feeRate!, inputs.length, outputs.length)
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: feeAmountForPriority(transactionCredentials.priority!, inputs.length, outputs.length);
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: feeAmountForPriority(transactionCredentials.priority!, inputs.length, outputs.length);
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final allAmount = allInputsAmount - allAmountFee;
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final allAmount = allInputsAmount - allAmountFee;
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var credentialsAmount = 0;
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var amount = 0;
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var fee = 0;
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//allInputsAmount - transactionCredentials.outputs.fold(0, (prev, element) => prev + element.value);
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if (hasMultiDestination) {
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if (outputs.any((item) => item.sendAll || item.formattedCryptoAmount! <= 0)) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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credentialsAmount = outputs.fold(0, (acc, value) => acc + value.formattedCryptoAmount!);
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// Calculate the amount to send and change
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if (allAmount - credentialsAmount < minAmount) {
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final sendAmount = transactionCredentials.outputs[0].formattedCryptoAmount!;
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throw BitcoinTransactionWrongBalanceException(currency);
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final outputAddress = transactionCredentials.outputs[0].isParsedAddress
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}
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? transactionCredentials.outputs[0].extractedAddress
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: transactionCredentials.outputs[0].address;
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final fee = bitbox.BitcoinCash.getByteCount(inputs.length, 2);
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final changeAmount = allInputsAmount - sendAmount - fee;
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// Add output for the recipient
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amount = credentialsAmount;
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builder.addOutput(outputAddress, sendAmount);
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// Add change output if there is change
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if (transactionCredentials.feeRate != null) {
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if (changeAmount > 0) {
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fee = calculateEstimatedFeeWithFeeRate(transactionCredentials.feeRate!, amount,
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final changeAddress = await walletAddresses.getChangeAddress();
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outputsCount: outputs.length + 1);
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builder.addOutput(changeAddress, changeAmount);
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} else {
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fee = calculateEstimatedFee(transactionCredentials.priority, amount,
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outputsCount: outputs.length + 1);
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}
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} else {
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final output = outputs.first;
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credentialsAmount = !output.sendAll ? output.formattedCryptoAmount! : 0;
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if (credentialsAmount > allAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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amount = output.sendAll || allAmount - credentialsAmount < minAmount
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? allAmount
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: credentialsAmount;
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if (output.sendAll || amount == allAmount) {
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fee = allAmountFee;
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} else if (transactionCredentials.feeRate != null) {
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fee = calculateEstimatedFeeWithFeeRate(transactionCredentials.feeRate!, amount);
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} else {
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fee = calculateEstimatedFee(transactionCredentials.priority, amount);
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}
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}
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if (fee == 0) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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final totalAmount = amount + fee;
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if (totalAmount > balance[currency]!.confirmed || totalAmount > allInputsAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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final txb = bitbox.Bitbox.transactionBuilder(testnet: false);
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final changeAddress = await walletAddresses.getChangeAddress();
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var leftAmount = totalAmount;
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var totalInputAmount = 0;
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inputs.clear();
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for (final utx in unspentCoins) {
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if (utx.isSending) {
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leftAmount = leftAmount - utx.value;
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totalInputAmount += utx.value;
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inputs.add(utx);
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if (leftAmount <= 0) {
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break;
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}
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}
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}
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if (inputs.isEmpty) throw BitcoinTransactionNoInputsException();
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if (amount <= 0 || totalInputAmount < totalAmount) {
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throw BitcoinTransactionWrongBalanceException(currency);
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}
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inputs.forEach((input) {
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txb.addInput(input.hash, input.vout);
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});
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outputs.forEach((item) {
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final outputAmount = hasMultiDestination ? item.formattedCryptoAmount : amount;
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final outputAddress = item.isParsedAddress ? item.extractedAddress! : item.address;
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txb.addOutput(outputAddress, outputAmount!);
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});
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final estimatedSize = bitbox.BitcoinCash.getByteCount(inputs.length, outputs.length + 1);
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var feeAmount = 0;
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if (transactionCredentials.feeRate != null) {
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feeAmount = transactionCredentials.feeRate! * estimatedSize;
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} else {
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feeAmount = feeRate(transactionCredentials.priority!) * estimatedSize;
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}
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final changeValue = totalInputAmount - amount - feeAmount;
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if (changeValue > minAmount) {
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txb.addOutput(changeAddress, changeValue);
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}
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}
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// Sign all inputs after adding all outputs
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for (var i = 0; i < inputs.length; i++) {
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for (var i = 0; i < inputs.length; i++) {
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final input = inputs[i];
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final input = inputs[i];
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final keyPair = generateKeyPair(
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final keyPair = generateKeyPair(
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hd: input.bitcoinAddressRecord.isHidden ? walletAddresses.sideHd : walletAddresses.mainHd,
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hd: input.bitcoinAddressRecord.isHidden ? walletAddresses.sideHd : walletAddresses.mainHd,
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index: input.bitcoinAddressRecord.index,
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index: input.bitcoinAddressRecord.index,
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network: bitcoinCashNetworkType);
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network: bitcoinCashNetworkType);
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builder.sign(i, keyPair, input.value);
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txb.sign(i, keyPair, input.value);
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}
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}
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// Build the transaction
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// Build the transaction
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final tx = builder.build();
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final tx = txb.build();
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return PendingBitcoinCashTransaction(tx, type,
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return PendingBitcoinCashTransaction(tx, type,
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electrumClient: electrumClient, amount: sendAmount, fee: fee);
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electrumClient: electrumClient, amount: amount, fee: fee);
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}
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}
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bitbox.ECPair generateKeyPair(
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bitbox.ECPair generateKeyPair(
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@ -177,12 +263,34 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
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bitbox.ECPair.fromWIF(hd.derive(index).wif!);
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bitbox.ECPair.fromWIF(hd.derive(index).wif!);
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@override
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@override
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int feeAmountForPriority(BitcoinTransactionPriority priority, int inputsCount, int outputsCount) =>
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int feeAmountForPriority(
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BitcoinTransactionPriority priority, int inputsCount, int outputsCount) =>
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feeRate(priority) * bitbox.BitcoinCash.getByteCount(inputsCount, outputsCount);
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feeRate(priority) * bitbox.BitcoinCash.getByteCount(inputsCount, outputsCount);
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int feeAmountWithFeeRate(int feeRate, int inputsCount, int outputsCount) =>
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int feeAmountWithFeeRate(int feeRate, int inputsCount, int outputsCount) =>
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feeRate * bitbox.BitcoinCash.getByteCount(inputsCount, outputsCount);
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feeRate * bitbox.BitcoinCash.getByteCount(inputsCount, outputsCount);
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int calculateEstimatedFeeWithFeeRate(int feeRate, int? amount, {int? outputsCount}) {
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int inputsCount = 0;
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int totalValue = 0;
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for (final input in unspentCoins) {
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if (input.isSending) {
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inputsCount++;
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totalValue += input.value;
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}
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if (amount != null && totalValue >= amount) {
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break;
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}
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}
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if (amount != null && totalValue < amount) return 0;
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final _outputsCount = outputsCount ?? (amount != null ? 2 : 1);
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return feeAmountWithFeeRate(feeRate, inputsCount, _outputsCount);
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}
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@override
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@override
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int feeRate(TransactionPriority priority) {
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int feeRate(TransactionPriority priority) {
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if (priority is BitcoinCashTransactionPriority) {
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if (priority is BitcoinCashTransactionPriority) {
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@ -199,4 +307,3 @@ abstract class BitcoinCashWalletBase extends ElectrumWallet with Store {
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return 0;
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return 0;
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}
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}
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}
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}
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@ -48,10 +48,6 @@ class CWBitcoin extends Bitcoin {
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List<TransactionPriority> getLitecoinTransactionPriorities()
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List<TransactionPriority> getLitecoinTransactionPriorities()
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=> LitecoinTransactionPriority.all;
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=> LitecoinTransactionPriority.all;
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@override
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List<TransactionPriority> getBitcoinCashTransactionPriorities()
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=> BitcoinTransactionPriority.all;
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@override
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@override
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TransactionPriority deserializeBitcoinTransactionPriority(int raw)
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TransactionPriority deserializeBitcoinTransactionPriority(int raw)
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=> BitcoinTransactionPriority.deserialize(raw: raw);
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=> BitcoinTransactionPriority.deserialize(raw: raw);
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@ -60,10 +56,6 @@ class CWBitcoin extends Bitcoin {
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TransactionPriority deserializeLitecoinTransactionPriority(int raw)
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TransactionPriority deserializeLitecoinTransactionPriority(int raw)
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=> LitecoinTransactionPriority.deserialize(raw: raw);
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=> LitecoinTransactionPriority.deserialize(raw: raw);
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@override
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TransactionPriority deserializeBitcoinCashTransactionPriority(int raw)
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=> BitcoinTransactionPriority.deserialize(raw: raw);
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@override
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@override
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int getFeeRate(Object wallet, TransactionPriority priority) {
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int getFeeRate(Object wallet, TransactionPriority priority) {
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final bitcoinWallet = wallet as ElectrumWallet;
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final bitcoinWallet = wallet as ElectrumWallet;
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@ -28,11 +28,11 @@ class CWBitcoinCash extends BitcoinCash {
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@override
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@override
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TransactionPriority deserializeBitcoinCashTransactionPriority(int raw) =>
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TransactionPriority deserializeBitcoinCashTransactionPriority(int raw) =>
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BitcoinTransactionPriority.deserialize(raw: raw);
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BitcoinCashTransactionPriority.deserialize(raw: raw);
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@override
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@override
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TransactionPriority getDefaultTransactionPriority() => BitcoinTransactionPriority.medium;
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TransactionPriority getDefaultTransactionPriority() => BitcoinCashTransactionPriority.medium;
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@override
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@override
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List<TransactionPriority> getTransactionPriorities() => BitcoinTransactionPriority.all;
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List<TransactionPriority> getTransactionPriorities() => BitcoinCashTransactionPriority.all;
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}
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}
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@ -731,7 +731,7 @@ abstract class SettingsStoreBase with Store {
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priority[WalletType.ethereum]!;
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priority[WalletType.ethereum]!;
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}
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}
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if (sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority) != null) {
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if (sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority) != null) {
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priority[WalletType.bitcoinCash] = bitcoin?.deserializeBitcoinCashTransactionPriority(
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priority[WalletType.bitcoinCash] = bitcoinCash?.deserializeBitcoinCashTransactionPriority(
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sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority)!) ??
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sharedPreferences.getInt(PreferencesKey.bitcoinCashTransactionPriority)!) ??
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priority[WalletType.bitcoinCash]!;
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priority[WalletType.bitcoinCash]!;
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}
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}
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@ -28,7 +28,6 @@ Future<void> main(List<String> args) async {
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Future<void> generateBitcoin(bool hasImplementation) async {
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Future<void> generateBitcoin(bool hasImplementation) async {
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final outputFile = File(bitcoinOutputPath);
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final outputFile = File(bitcoinOutputPath);
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const bitcoinCommonHeaders = """
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const bitcoinCommonHeaders = """
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import 'package:cw_bitcoin_cash/cw_bitcoin_cash.dart';
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import 'package:cw_core/wallet_credentials.dart';
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import 'package:cw_core/wallet_credentials.dart';
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import 'package:cw_core/wallet_info.dart';
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import 'package:cw_core/wallet_info.dart';
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import 'package:cw_core/transaction_priority.dart';
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import 'package:cw_core/transaction_priority.dart';
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@ -61,10 +60,8 @@ abstract class Bitcoin {
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Map<String, String> getWalletKeys(Object wallet);
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Map<String, String> getWalletKeys(Object wallet);
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List<TransactionPriority> getTransactionPriorities();
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List<TransactionPriority> getTransactionPriorities();
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List<TransactionPriority> getLitecoinTransactionPriorities();
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List<TransactionPriority> getLitecoinTransactionPriorities();
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List<TransactionPriority> getBitcoinCashTransactionPriorities();
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TransactionPriority deserializeBitcoinTransactionPriority(int raw);
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TransactionPriority deserializeBitcoinTransactionPriority(int raw);
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TransactionPriority deserializeLitecoinTransactionPriority(int raw);
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TransactionPriority deserializeLitecoinTransactionPriority(int raw);
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TransactionPriority deserializeBitcoinCashTransactionPriority(int raw);
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int getFeeRate(Object wallet, TransactionPriority priority);
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int getFeeRate(Object wallet, TransactionPriority priority);
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Future<void> generateNewAddress(Object wallet);
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Future<void> generateNewAddress(Object wallet);
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Object createBitcoinTransactionCredentials(List<Output> outputs, {required TransactionPriority priority, int? feeRate});
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Object createBitcoinTransactionCredentials(List<Output> outputs, {required TransactionPriority priority, int? feeRate});
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