add historical fiat values to transactions csv export

drongo

@@ -1 +1 @@
-Subproject commit 94aafbc11e974e44ba53fe505940767ff77ef940
+Subproject commit 0815484c4cb384522cf215ef18fc69a666b43c37

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -1299,7 +1299,7 @@ public class AppController implements Initializable {
     public void exportWallet(ActionEvent event) {
         WalletForm selectedWalletForm = getSelectedWalletForm();
         if(selectedWalletForm != null) {
-            WalletExportDialog dlg = new WalletExportDialog(selectedWalletForm.getWallet());
+            WalletExportDialog dlg = new WalletExportDialog(selectedWalletForm);
             dlg.initOwner(rootStack.getScene().getWindow());
             Optional<Wallet> wallet = dlg.showAndWait();
             if(wallet.isPresent()) {

src/main/java/com/sparrowwallet/sparrow/UnitFormat.java

@@ -12,6 +12,7 @@ public enum UnitFormat {
         private final DecimalFormat satsFormat = new DecimalFormat("#,##0", getDecimalFormatSymbols());
         private final DecimalFormat tableBtcFormat = new DecimalFormat("0.00000000", getDecimalFormatSymbols());
         private final DecimalFormat currencyFormat = new DecimalFormat("#,##0.00", getDecimalFormatSymbols());
+        private final DecimalFormat tableCurrencyFormat = new DecimalFormat("0.00", getDecimalFormatSymbols());
 
         public DecimalFormat getBtcFormat() {
             btcFormat.setMaximumFractionDigits(8);
@@ -30,6 +31,10 @@ public enum UnitFormat {
             return currencyFormat;
         }
 
+        public DecimalFormat getTableCurrencyFormat() {
+            return tableCurrencyFormat;
+        }
+
         public DecimalFormatSymbols getDecimalFormatSymbols() {
             DecimalFormatSymbols symbols = new DecimalFormatSymbols();
             symbols.setDecimalSeparator('.');
@@ -42,6 +47,7 @@ public enum UnitFormat {
         private final DecimalFormat satsFormat = new DecimalFormat("#,##0", getDecimalFormatSymbols());
         private final DecimalFormat tableBtcFormat = new DecimalFormat("0.00000000", getDecimalFormatSymbols());
         private final DecimalFormat currencyFormat = new DecimalFormat("#,##0.00", getDecimalFormatSymbols());
+        private final DecimalFormat tableCurrencyFormat = new DecimalFormat("0.00", getDecimalFormatSymbols());
 
         public DecimalFormat getBtcFormat() {
             btcFormat.setMaximumFractionDigits(8);
@@ -60,6 +66,10 @@ public enum UnitFormat {
             return currencyFormat;
         }
 
+        public DecimalFormat getTableCurrencyFormat() {
+            return tableCurrencyFormat;
+        }
+
         public DecimalFormatSymbols getDecimalFormatSymbols() {
             DecimalFormatSymbols symbols = new DecimalFormatSymbols();
             symbols.setDecimalSeparator(',');
@@ -78,6 +88,8 @@ public enum UnitFormat {
 
     public abstract DecimalFormat getCurrencyFormat();
 
+    public abstract DecimalFormat getTableCurrencyFormat();
+
     public String formatBtcValue(Long amount) {
         return getBtcFormat().format(amount.doubleValue() / Transaction.SATOSHIS_PER_BITCOIN);
     }
@@ -94,6 +106,10 @@ public enum UnitFormat {
         return getCurrencyFormat().format(amount);
     }
 
+    public String tableFormatCurrencyValue(double amount) {
+        return getTableCurrencyFormat().format(amount);
+    }
+
     public String getGroupingSeparator() {
         return Character.toString(getDecimalFormatSymbols().getGroupingSeparator());
     }

src/main/java/com/sparrowwallet/sparrow/control/FileWalletExportPane.java

@@ -10,6 +10,8 @@ import com.sparrowwallet.sparrow.event.TimedEvent;
 import com.sparrowwallet.sparrow.event.WalletExportEvent;
 import com.sparrowwallet.sparrow.glyphfont.FontAwesome5;
 import com.sparrowwallet.sparrow.io.*;
+import javafx.concurrent.Service;
+import javafx.concurrent.Task;
 import javafx.geometry.Pos;
 import javafx.scene.control.Button;
 import javafx.scene.control.Control;
@@ -141,10 +143,19 @@ public class FileWalletExportPane extends TitledDescriptionPane {
     private void exportWallet(File file, Wallet exportWallet) {
         try {
             if(file != null) {
-                try(OutputStream outputStream = new FileOutputStream(file)) {
-                    exporter.exportWallet(exportWallet, outputStream);
+                FileWalletExportService fileWalletExportService = new FileWalletExportService(exporter, file, exportWallet);
+                fileWalletExportService.setOnSucceeded(event -> {
                     EventManager.get().post(new WalletExportEvent(exportWallet));
-                }
+                });
+                fileWalletExportService.setOnFailed(event -> {
+                    Throwable e = event.getSource().getException();
+                    String errorMessage = e.getMessage();
+                    if(e.getCause() != null && e.getCause().getMessage() != null && !e.getCause().getMessage().isEmpty()) {
+                        errorMessage = e.getCause().getMessage();
+                    }
+                    setError("Export Error", errorMessage);
+                });
+                fileWalletExportService.start();
             } else {
                 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
                 exporter.exportWallet(exportWallet, outputStream);
@@ -167,4 +178,30 @@ public class FileWalletExportPane extends TitledDescriptionPane {
             setError("Export Error", errorMessage);
         }
     }
+
+    public static class FileWalletExportService extends Service<Void> {
+        private final WalletExport exporter;
+        private final File file;
+        private final Wallet wallet;
+
+        public FileWalletExportService(WalletExport exporter, File file, Wallet wallet) {
+            this.exporter = exporter;
+            this.file = file;
+            this.wallet = wallet;
+        }
+
+        @Override
+        protected Task<Void> createTask() {
+            return new Task<>() {
+                @Override
+                protected Void call() throws Exception {
+                    try(OutputStream outputStream = new FileOutputStream(file)) {
+                        exporter.exportWallet(wallet, outputStream);
+                    }
+
+                    return null;
+                }
+            };
+        }
+    }
 }

src/main/java/com/sparrowwallet/sparrow/control/WalletExportDialog.java

@@ -6,6 +6,7 @@ import com.sparrowwallet.drongo.wallet.Wallet;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.event.WalletExportEvent;
+import com.sparrowwallet.sparrow.wallet.WalletForm;
 import com.sparrowwallet.sparrow.io.*;
 import javafx.scene.control.*;
 import javafx.scene.layout.AnchorPane;
@@ -17,7 +18,9 @@ import java.util.List;
 public class WalletExportDialog extends Dialog<Wallet> {
     private Wallet wallet;
 
-    public WalletExportDialog(Wallet wallet) {
+    public WalletExportDialog(WalletForm walletForm) {
+        this.wallet = walletForm.getWallet();
+
         EventManager.get().register(this);
         setOnCloseRequest(event -> {
             EventManager.get().unregister(this);
@@ -42,9 +45,10 @@ public class WalletExportDialog extends Dialog<Wallet> {
 
         List<WalletExport> exporters;
         if(wallet.getPolicyType() == PolicyType.SINGLE) {
-            exporters = List.of(new Electrum(), new ElectrumPersonalServer(), new Descriptor(), new SpecterDesktop(), new Sparrow(), new WalletLabels());
+            exporters = List.of(new Electrum(), new ElectrumPersonalServer(), new Descriptor(), new SpecterDesktop(), new Sparrow(), new WalletLabels(), new WalletTransactions(walletForm));
         } else if(wallet.getPolicyType() == PolicyType.MULTI) {
-            exporters = List.of(new Bip129(), new CaravanMultisig(), new ColdcardMultisig(), new CoboVaultMultisig(), new Electrum(), new ElectrumPersonalServer(), new KeystoneMultisig(), new Descriptor(), new JadeMultisig(), new PassportMultisig(), new SpecterDesktop(), new BlueWalletMultisig(), new SpecterDIY(), new Sparrow(), new WalletLabels());
+            exporters = List.of(new Bip129(), new CaravanMultisig(), new ColdcardMultisig(), new CoboVaultMultisig(), new Electrum(), new ElectrumPersonalServer(), new KeystoneMultisig(),
+                    new Descriptor(), new JadeMultisig(), new PassportMultisig(), new SpecterDesktop(), new BlueWalletMultisig(), new SpecterDIY(), new Sparrow(), new WalletLabels(), new WalletTransactions(walletForm));
         } else {
             throw new UnsupportedOperationException("Cannot export wallet with policy type " + wallet.getPolicyType());
         }

src/main/java/com/sparrowwallet/sparrow/io/WalletLabels.java

@@ -37,7 +37,7 @@ public class WalletLabels implements WalletImport, WalletExport {
 
     @Override
     public String getName() {
-        return "Wallet Labels";
+        return "Labels";
     }
 
     @Override

src/main/java/com/sparrowwallet/sparrow/io/WalletTransactions.java

@@ -0,0 +1,173 @@
+package com.sparrowwallet.sparrow.io;
+
+import com.csvreader.CsvWriter;
+import com.sparrowwallet.drongo.BitcoinUnit;
+import com.sparrowwallet.drongo.protocol.Transaction;
+import com.sparrowwallet.drongo.protocol.TransactionInput;
+import com.sparrowwallet.drongo.protocol.TransactionOutput;
+import com.sparrowwallet.drongo.wallet.BlockTransaction;
+import com.sparrowwallet.drongo.wallet.Wallet;
+import com.sparrowwallet.drongo.wallet.WalletModel;
+import com.sparrowwallet.sparrow.AppServices;
+import com.sparrowwallet.sparrow.UnitFormat;
+import com.sparrowwallet.sparrow.control.EntryCell;
+import com.sparrowwallet.sparrow.net.ExchangeSource;
+import com.sparrowwallet.sparrow.wallet.Entry;
+import com.sparrowwallet.sparrow.wallet.TransactionEntry;
+import com.sparrowwallet.sparrow.wallet.WalletForm;
+import com.sparrowwallet.sparrow.wallet.WalletTransactionsEntry;
+import org.apache.commons.lang3.time.DateUtils;
+
+import java.io.IOException;
+import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class WalletTransactions implements WalletExport {
+    private static final long ONE_DAY = 24*60*60*1000L;
+
+    private final WalletForm walletForm;
+
+    public WalletTransactions(WalletForm walletForm) {
+        this.walletForm = walletForm;
+    }
+
+    @Override
+    public String getName() {
+        return "Transactions";
+    }
+
+    @Override
+    public WalletModel getWalletModel() {
+        return WalletModel.TRANSACTIONS;
+    }
+
+    @Override
+    public void exportWallet(Wallet wallet, OutputStream outputStream) throws ExportException {
+        WalletTransactionsEntry walletTransactionsEntry = walletForm.getWalletTransactionsEntry();
+
+        ExchangeSource exchangeSource = Config.get().getExchangeSource();
+        if(Config.get().getExchangeSource() == null) {
+            exchangeSource = ExchangeSource.COINGECKO;
+        }
+
+        Currency fiatCurrency = (exchangeSource == ExchangeSource.NONE || !AppServices.onlineProperty().get() ? null : Config.get().getFiatCurrency());
+        Map<Date, Double> fiatRates = new HashMap<>();
+        if(fiatCurrency != null && !walletTransactionsEntry.getChildren().isEmpty()) {
+            LongSummaryStatistics stats = walletTransactionsEntry.getChildren().stream()
+                    .map(entry -> ((TransactionEntry)entry).getBlockTransaction().getDate())
+                    .filter(Objects::nonNull)
+                    .collect(Collectors.summarizingLong(Date::getTime));
+            fiatRates = exchangeSource.getHistoricalExchangeRates(fiatCurrency, new Date(stats.getMin() - ONE_DAY), new Date(stats.getMax()));
+        }
+
+        BitcoinUnit bitcoinUnit = Config.get().getBitcoinUnit();
+        if(bitcoinUnit == null || bitcoinUnit.equals(BitcoinUnit.AUTO)) {
+            bitcoinUnit = walletForm.getWallet().getAutoUnit();
+        }
+
+        try {
+            CsvWriter writer = new CsvWriter(outputStream, ',', StandardCharsets.UTF_8);
+
+            writer.write("Date");
+            writer.write("Label");
+            writer.write("Value");
+            writer.write("Balance");
+            writer.write("Fee");
+            if(fiatCurrency != null) {
+                writer.write("Value (" + fiatCurrency.getCurrencyCode() + ")");
+            }
+            writer.write("Txid");
+            writer.endRecord();
+
+            for(Entry entry : walletTransactionsEntry.getChildren()) {
+                TransactionEntry txEntry = (TransactionEntry)entry;
+                writer.write(txEntry.getBlockTransaction().getDate() == null ? "Unconfirmed" : EntryCell.DATE_FORMAT.format(txEntry.getBlockTransaction().getDate()));
+                writer.write(txEntry.getLabel());
+                writer.write(getCoinValue(bitcoinUnit, txEntry.getValue()));
+                writer.write(getCoinValue(bitcoinUnit, txEntry.getBalance()));
+                Long fee = txEntry.getValue() < 0 ? getFee(wallet, txEntry.getBlockTransaction()) : null;
+                writer.write(fee == null ? "" : getCoinValue(bitcoinUnit, fee));
+                if(fiatCurrency != null) {
+                    Double fiatValue = getFiatValue(txEntry, fiatRates);
+                    writer.write(fiatValue == null ? "" : getFiatValue(fiatValue));
+                }
+                writer.write(txEntry.getBlockTransaction().getHash().toString());
+                writer.endRecord();
+            }
+            writer.close();
+        } catch(IOException e) {
+            throw new ExportException("Error writing transactions CSV", e);
+        }
+    }
+
+    private Long getFee(Wallet wallet, BlockTransaction blockTransaction) {
+        long fee = 0L;
+        for(TransactionInput txInput : blockTransaction.getTransaction().getInputs()) {
+            if(txInput.isCoinBase()) {
+                return 0L;
+            }
+
+            BlockTransaction inputTx = wallet.getWalletTransaction(txInput.getOutpoint().getHash());
+            if(inputTx == null || inputTx.getTransaction().getOutputs().size() <= txInput.getOutpoint().getIndex()) {
+                return null;
+            }
+            TransactionOutput spentOutput = inputTx.getTransaction().getOutputs().get((int)txInput.getOutpoint().getIndex());
+            fee += spentOutput.getValue();
+        }
+
+        for(TransactionOutput txOutput : blockTransaction.getTransaction().getOutputs()) {
+            fee -= txOutput.getValue();
+        }
+
+        return fee;
+    }
+
+    private String getCoinValue(BitcoinUnit bitcoinUnit, Long value) {
+        UnitFormat format = Config.get().getUnitFormat() == null ? UnitFormat.DOT : Config.get().getUnitFormat();
+        return BitcoinUnit.BTC.equals(bitcoinUnit) ? format.tableFormatBtcValue(value) : String.format(Locale.ENGLISH, "%d", value);
+    }
+
+    private String getFiatValue(Double value) {
+        UnitFormat format = Config.get().getUnitFormat() == null ? UnitFormat.DOT : Config.get().getUnitFormat();
+        return format.tableFormatCurrencyValue(value);
+    }
+
+    private Double getFiatValue(TransactionEntry txEntry, Map<Date, Double> fiatRates) {
+        Double dayRate = null;
+        if(txEntry.getBlockTransaction().getDate() == null) {
+            if(AppServices.getFiatCurrencyExchangeRate() != null) {
+                dayRate = AppServices.getFiatCurrencyExchangeRate().getBtcRate();
+            }
+        } else {
+            dayRate = fiatRates.get(DateUtils.truncate(txEntry.getBlockTransaction().getDate(), Calendar.DAY_OF_MONTH));
+        }
+
+        if(dayRate != null) {
+            return dayRate * txEntry.getValue() / Transaction.SATOSHIS_PER_BITCOIN;
+        }
+
+        return null;
+    }
+
+    @Override
+    public String getWalletExportDescription() {
+        return "Exports a CSV file containing dates and values of the transactions in this wallet. Additionally, if a fiat currency has been configured, the fiat value on the day they were first included in the blockchain.";
+    }
+
+    @Override
+    public String getExportFileExtension(Wallet wallet) {
+        return "csv";
+    }
+
+    @Override
+    public boolean isWalletExportScannable() {
+        return false;
+    }
+
+    @Override
+    public boolean walletExportRequiresDecryption() {
+        return false;
+    }
+}

src/main/java/com/sparrowwallet/sparrow/net/ExchangeSource.java

@@ -1,13 +1,20 @@
 package com.sparrowwallet.sparrow.net;
 
+import com.sparrowwallet.nightjar.http.JavaHttpException;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.event.ExchangeRatesUpdatedEvent;
 import javafx.concurrent.ScheduledService;
 import javafx.concurrent.Service;
 import javafx.concurrent.Task;
+import org.apache.commons.lang3.time.DateUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.time.Instant;
+import java.time.ZoneId;
+import java.time.temporal.ChronoUnit;
 import java.util.*;
 import java.util.stream.Collectors;
 
@@ -22,6 +29,11 @@ public enum ExchangeSource {
         public Double getExchangeRate(Currency currency) {
             return null;
         }
+
+        @Override
+        public Map<Date, Double> getHistoricalExchangeRates(Currency currency, Date start, Date end) {
+            return Collections.emptyMap();
+        }
     },
     COINBASE("Coinbase") {
         @Override
@@ -60,6 +72,52 @@ public enum ExchangeSource {
                 return new CoinbaseRates();
             }
         }
+
+        @Override
+        public Map<Date, Double> getHistoricalExchangeRates(Currency currency, Date start, Date end) {
+            Map<Date, Double> historicalRates = new TreeMap<>();
+            DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
+
+            Instant currentInstant = start.toInstant();
+            Instant endInstant = end.toInstant();
+
+            while(currentInstant.isBefore(endInstant) || currentInstant.equals(endInstant)) {
+                Date fromDate = Date.from(currentInstant.atZone(ZoneId.systemDefault()).toInstant());
+                currentInstant = currentInstant.plus(300, ChronoUnit.DAYS);
+                Date toDate = Date.from(currentInstant.atZone(ZoneId.systemDefault()).toInstant());
+                toDate = toDate.after(end) ? end : toDate;
+
+                String startTime = dateFormat.format(fromDate);
+                String endTime = dateFormat.format(toDate);
+
+                String url = "https://api.pro.coinbase.com/products/BTC-" + currency.getCurrencyCode() + "/candles?start=" + startTime + "T12:00:00&end=" + endTime + "T12:00:00&granularity=86400";
+
+                if(log.isInfoEnabled()) {
+                    log.info("Requesting historical exchange rates from " + url);
+                }
+
+                HttpClientService httpClientService = AppServices.getHttpClientService();
+                try {
+                    Number[][] coinbaseData = httpClientService.requestJson(url, Number[][].class, Map.of("User-Agent", "Mozilla/4.0 (compatible; MSIE 9.0; Windows NT 6.1)", "Accept", "*/*"));
+                    for(Number[] price : coinbaseData) {
+                        Date date = new Date(price[0].longValue() * 1000);
+                        historicalRates.put(DateUtils.truncate(date, Calendar.DAY_OF_MONTH), price[3].doubleValue());
+                    }
+                } catch(Exception e) {
+                    if(log.isDebugEnabled()) {
+                        log.warn("Error retrieving historical currency rates", e);
+                    } else {
+                        if(e instanceof JavaHttpException javaHttpException && javaHttpException.getStatusCode() == 404) {
+                            log.warn("Error retrieving historical currency rates (" + e.getMessage() + "). BTC-" + currency.getCurrencyCode() + " may not be supported by " + this);
+                        } else {
+                            log.warn("Error retrieving historical currency rates (" + e.getMessage() + ")");
+                        }
+                    }
+                }
+            }
+
+            return historicalRates;
+        }
     },
     COINGECKO("Coingecko") {
         @Override
@@ -98,6 +156,36 @@ public enum ExchangeSource {
                 return new CoinGeckoRates();
             }
         }
+
+        @Override
+        public Map<Date, Double> getHistoricalExchangeRates(Currency currency, Date start, Date end) {
+            long startDate = start.getTime() / 1000;
+            long endDate = end.getTime() / 1000;
+
+            String url = "https://api.coingecko.com/api/v3/coins/bitcoin/market_chart/range?vs_currency=" + currency.getCurrencyCode() + "&from=" + startDate + "&to=" + endDate;
+
+            if(log.isInfoEnabled()) {
+                log.info("Requesting historical exchange rates from " + url);
+            }
+
+            Map<Date, Double> historicalRates = new TreeMap<>();
+            HttpClientService httpClientService = AppServices.getHttpClientService();
+            try {
+                CoinGeckoHistoricalRates coinGeckoHistoricalRates = httpClientService.requestJson(url, CoinGeckoHistoricalRates.class, null);
+                for(List<Number> historicalRate : coinGeckoHistoricalRates.prices) {
+                    Date date = new Date(historicalRate.get(0).longValue());
+                    historicalRates.put(DateUtils.truncate(date, Calendar.DAY_OF_MONTH), historicalRate.get(1).doubleValue());
+                }
+            } catch(Exception e) {
+                if(log.isDebugEnabled()) {
+                    log.warn("Error retrieving historical currency rates", e);
+                } else {
+                    log.warn("Error retrieving historical currency rates (" + e.getMessage() + ")");
+                }
+            }
+
+            return historicalRates;
+        }
     };
 
     private static final Logger log = LoggerFactory.getLogger(ExchangeSource.class);
@@ -112,6 +200,8 @@ public enum ExchangeSource {
 
     public abstract Double getExchangeRate(Currency currency);
 
+    public abstract Map<Date, Double> getHistoricalExchangeRates(Currency currency, Date start, Date end);
+
     private static boolean isValidISO4217Code(String code) {
         try {
             Currency currency = Currency.getInstance(code);
@@ -185,4 +275,8 @@ public enum ExchangeSource {
         public Double value;
         public String type;
     }
+
+    private static class CoinGeckoHistoricalRates {
+        public List<List<Number>> prices = new ArrayList<>();
+    }
 }

src/main/java/com/sparrowwallet/sparrow/terminal/wallet/WalletData.java

@@ -58,7 +58,7 @@ public class WalletData {
 
     public SettingsDialog getSettingsDialog() {
         if(settingsDialog == null) {
-            SettingsWalletForm settingsWalletForm = new SettingsWalletForm(walletForm.getStorage(), walletForm.getWallet());
+            SettingsWalletForm settingsWalletForm = new SettingsWalletForm(walletForm.getStorage(), walletForm.getWallet(), walletForm);
             settingsDialog = new SettingsDialog(settingsWalletForm);
             EventManager.get().register(settingsDialog);
         }

src/main/java/com/sparrowwallet/sparrow/wallet/SettingsController.java

@@ -508,11 +508,8 @@ public class SettingsController extends WalletFormController implements Initiali
             throw new IllegalStateException("Cannot export unsaved wallet");
         }
 
-        Optional<Wallet> optWallet = AppServices.get().getOpenWallets().entrySet().stream()
-                .filter(entry -> walletForm.getWalletFile().equals(entry.getValue().getWalletFile())
-                        && entry.getKey().getName().equals(walletForm.getWallet().getName())).map(Map.Entry::getKey).findFirst();
-        if(optWallet.isPresent()) {
-            WalletExportDialog dlg = new WalletExportDialog(optWallet.get());
+        if(walletForm instanceof SettingsWalletForm settingsWalletForm) {
+            WalletExportDialog dlg = new WalletExportDialog(settingsWalletForm.getAppWalletForm());
             dlg.initOwner(export.getScene().getWindow());
             dlg.showAndWait();
         } else {

src/main/java/com/sparrowwallet/sparrow/wallet/SettingsWalletForm.java

@@ -22,11 +22,13 @@ import java.util.Objects;
  */
 public class SettingsWalletForm extends WalletForm {
     private Wallet walletCopy;
+    private final WalletForm appWalletForm;
 
-    public SettingsWalletForm(Storage storage, Wallet currentWallet) {
+    public SettingsWalletForm(Storage storage, Wallet currentWallet, WalletForm appWalletForm) {
         super(storage, currentWallet);
         this.walletCopy = currentWallet.copy();
         this.walletCopy.setMasterWallet(walletCopy.isMasterWallet() ? null : walletCopy.getMasterWallet().copy());
+        this.appWalletForm = appWalletForm;
     }
 
     @Override
@@ -39,6 +41,10 @@ public class SettingsWalletForm extends WalletForm {
         this.walletCopy = wallet;
     }
 
+    public WalletForm getAppWalletForm() {
+        return appWalletForm;
+    }
+
     @Override
     public void revert() {
         this.walletCopy = super.getWallet().copy();

src/main/java/com/sparrowwallet/sparrow/wallet/TransactionsController.java

@@ -1,18 +1,14 @@
 package com.sparrowwallet.sparrow.wallet;
 
-import com.csvreader.CsvWriter;
 import com.google.common.eventbus.Subscribe;
-import com.sparrowwallet.drongo.BitcoinUnit;
-import com.sparrowwallet.drongo.protocol.TransactionInput;
-import com.sparrowwallet.drongo.protocol.TransactionOutput;
-import com.sparrowwallet.drongo.wallet.BlockTransaction;
-import com.sparrowwallet.sparrow.UnitFormat;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.control.*;
 import com.sparrowwallet.sparrow.event.*;
 import com.sparrowwallet.sparrow.io.Config;
+import com.sparrowwallet.sparrow.io.WalletTransactions;
 import com.sparrowwallet.sparrow.net.ExchangeSource;
+import com.sparrowwallet.drongo.wallet.Wallet;
 import javafx.application.Platform;
 import javafx.collections.ListChangeListener;
 import javafx.event.ActionEvent;
@@ -28,15 +24,11 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.io.File;
-import java.io.FileOutputStream;
-import java.io.IOException;
 import java.net.URL;
-import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;
 import java.util.Collections;
 import java.util.Date;
-import java.util.Locale;
 import java.util.ResourceBundle;
 
 public class TransactionsController extends WalletFormController implements Initializable {
@@ -113,65 +105,25 @@ public class TransactionsController extends WalletFormController implements Init
     }
 
     public void exportCSV(ActionEvent event) {
-        WalletTransactionsEntry walletTransactionsEntry = getWalletForm().getWalletTransactionsEntry();
+        Wallet wallet = getWalletForm().getWallet();
 
         Stage window = new Stage();
         FileChooser fileChooser = new FileChooser();
         fileChooser.setTitle("Export Transactions as CSV");
-        fileChooser.setInitialFileName(getWalletForm().getWallet().getFullName() + ".csv");
-
+        fileChooser.setInitialFileName(wallet.getFullName() + "-transactions.csv");
         AppServices.moveToActiveWindowScreen(window, 800, 450);
         File file = fileChooser.showSaveDialog(window);
         if(file != null) {
-            try(FileOutputStream outputStream = new FileOutputStream(file)) {
-                CsvWriter writer = new CsvWriter(outputStream, ',', StandardCharsets.UTF_8);
-                writer.writeRecord(new String[] {"Date", "Label", "Value", "Balance", "Fee", "Txid"});
-                for(Entry entry : walletTransactionsEntry.getChildren()) {
-                    TransactionEntry txEntry = (TransactionEntry)entry;
-                    writer.write(txEntry.getBlockTransaction().getDate() == null ? "Unconfirmed" : EntryCell.DATE_FORMAT.format(txEntry.getBlockTransaction().getDate()));
-                    writer.write(txEntry.getLabel());
-                    writer.write(getCoinValue(txEntry.getValue()));
-                    writer.write(getCoinValue(txEntry.getBalance()));
-                    Long fee = txEntry.getValue() < 0 ? getFee(txEntry.getBlockTransaction()) : null;
-                    writer.write(fee == null ? "" : getCoinValue(fee));
-                    writer.write(txEntry.getBlockTransaction().getHash().toString());
-                    writer.endRecord();
-                }
-                writer.close();
-            } catch(IOException e) {
+            FileWalletExportPane.FileWalletExportService exportService = new FileWalletExportPane.FileWalletExportService(new WalletTransactions(getWalletForm()), file, wallet);
+            exportService.setOnFailed(failedEvent -> {
+                Throwable e = failedEvent.getSource().getException();
                 log.error("Error exporting transactions as CSV", e);
                 AppServices.showErrorDialog("Error exporting transactions as CSV", e.getMessage());
-            }
+            });
+            exportService.start();
         }
     }
 
-    private Long getFee(BlockTransaction blockTransaction) {
-        long fee = 0L;
-        for(TransactionInput txInput : blockTransaction.getTransaction().getInputs()) {
-            if(txInput.isCoinBase()) {
-                return 0L;
-            }
-
-            BlockTransaction inputTx = getWalletForm().getWallet().getWalletTransaction(txInput.getOutpoint().getHash());
-            if(inputTx == null || inputTx.getTransaction().getOutputs().size() <= txInput.getOutpoint().getIndex()) {
-                return null;
-            }
-            TransactionOutput spentOutput = inputTx.getTransaction().getOutputs().get((int)txInput.getOutpoint().getIndex());
-            fee += spentOutput.getValue();
-        }
-
-        for(TransactionOutput txOutput : blockTransaction.getTransaction().getOutputs()) {
-            fee -= txOutput.getValue();
-        }
-
-        return fee;
-    }
-
-    private String getCoinValue(Long value) {
-        UnitFormat format = Config.get().getUnitFormat() == null ? UnitFormat.DOT : Config.get().getUnitFormat();
-        return BitcoinUnit.BTC.equals(transactionsTable.getBitcoinUnit()) ? format.tableFormatBtcValue(value) : String.format(Locale.ENGLISH, "%d", value);
-    }
-
     private void logMessage(String logMessage) {
         if(logMessage != null) {
             logMessage = logMessage.replace("m/", "../");

src/main/java/com/sparrowwallet/sparrow/wallet/WalletController.java

@@ -102,7 +102,7 @@ public class WalletController extends WalletFormController implements Initializa
 
                     WalletForm walletForm = getWalletForm();
                     if(function.equals(Function.SETTINGS)) {
-                        walletForm = new SettingsWalletForm(getWalletForm().getStorage(), getWalletForm().getWallet());
+                        walletForm = new SettingsWalletForm(getWalletForm().getStorage(), getWalletForm().getWallet(), getWalletForm());
                         getWalletForm().setSettingsWalletForm(walletForm);
                     }