#65 - Export transactions to CSV

src/mainwindow.cpp

@@ -51,6 +51,9 @@ MainWindow::MainWindow(QWidget *parent) :
     // Backup wallet.dat
     QObject::connect(ui->actionBackup_wallet_dat, &QAction::triggered, this, &MainWindow::backupWalletDat);
 
+    // Export transactions
+    QObject::connect(ui->actionExport_transactions, &QAction::triggered, this, &MainWindow::exportTransactions);
+
     // z-Board.net
     QObject::connect(ui->actionz_board_net, &QAction::triggered, this, &MainWindow::postToZBoard);
 
@@ -649,6 +652,25 @@ void MainWindow::importPrivKey() {
     }
 }
 
+/** 
+ * Export transaction history into a CSV file
+ */
+void MainWindow::exportTransactions() {
+    // First, get the export file name
+    QString exportName = "zcash-transactions-" + QDateTime::currentDateTime().toString("yyyyMMdd") + ".csv";
+
+    QUrl csvName = QFileDialog::getSaveFileUrl(this, 
+            tr("Export transactions"), exportName, "CSV file (*.csv)");
+
+    if (csvName.isEmpty())
+        return;
+
+    if (!rpc->getTransactionsModel()->exportToCsv(csvName.toLocalFile())) {
+        QMessageBox::critical(this, tr("Error"), 
+            tr("Error exporting transactions, file was not saved"), QMessageBox::Ok);
+    }
+} 
+
 /**
  * Backup the wallet.dat file. This is kind of a hack, since it has to read from the filesystem rather than an RPC call
  * This might fail for various reasons - Remote zcashd, non-standard locations, custom params passed to zcashd, many others

src/mainwindow.h

@@ -94,6 +94,7 @@ private:
     void exportAllKeys();
     void exportKeys(QString addr = "");
     void backupWalletDat();
+    void exportTransactions();
 
     void doImport(QList<QString>* keys);
 

src/mainwindow.ui

@@ -346,8 +346,8 @@
                <rect>
                 <x>0</x>
                 <y>0</y>
-                <width>928</width>
-                <height>380</height>
+                <width>920</width>
+                <height>334</height>
                </rect>
               </property>
               <layout class="QVBoxLayout" name="sendToLayout">
@@ -978,7 +978,7 @@
      <x>0</x>
      <y>0</y>
      <width>968</width>
-     <height>19</height>
+     <height>22</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -989,6 +989,8 @@
     <addaction name="actionExport_All_Private_Keys"/>
     <addaction name="actionBackup_wallet_dat"/>
     <addaction name="separator"/>
+    <addaction name="actionExport_transactions"/>
+    <addaction name="separator"/>
     <addaction name="actionExit"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
@@ -1086,6 +1088,11 @@
     <string>&amp;Backup wallet.dat</string>
    </property>
   </action>
+  <action name="actionExport_transactions">
+   <property name="text">
+    <string>Export transactions</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

src/rpc.h

@@ -46,10 +46,10 @@ public:
     void watchTxStatus();
     void addNewTxToWatch(Tx tx, const QString& newOpid); 
 
-    BalancesTableModel*               getBalancesModel()  { return balancesTableModel; }    
-    const QList<QString>*             getAllZAddresses()  { return zaddresses; }
-    const QList<UnspentOutput>*       getUTXOs()          { return utxos; }
-    const QMap<QString, double>*      getAllBalances()    { return allBalances; }
+    const TxTableModel*               getTransactionsModel() { return transactionsTableModel; }
+    const QList<QString>*             getAllZAddresses()     { return zaddresses; }
+    const QList<UnspentOutput>*       getUTXOs()             { return utxos; }
+    const QMap<QString, double>*      getAllBalances()       { return allBalances; }
 
     void newZaddr(bool sapling, const std::function<void(json)>& cb);
     void newTaddr(const std::function<void(json)>& cb);

src/txtablemodel.cpp

@@ -39,6 +39,37 @@ void TxTableModel::addTData(const QList<TransactionItem>& data) {
     updateAllData();
 }
 
+bool TxTableModel::exportToCsv(QString fileName) const {
+    if (!modeldata)
+        return false;
+
+    QFile file(fileName);
+    if (!file.open(QIODevice::ReadWrite | QIODevice::Truncate))
+        return false;
+
+    QTextStream out(&file);   // we will serialize the data into the file
+
+    // Write headers
+    for (int i = 0; i < headers.length(); i++) {
+        out << "\"" << headers[i] << "\"";
+    }
+    out << "\"Memo\"";
+    out << endl;
+    
+    // Write out each row
+    for (int row = 0; row < modeldata->length(); row++) {
+        for (int col = 0; col < headers.length(); col++) {
+            out << "\"" << data(index(row, col), Qt::DisplayRole).toString() << "\",";
+        }
+        // Memo
+        out << "\"" << modeldata->at(row).memo << "\"";
+        out << endl;
+    }
+
+    file.close();
+    return true;
+}
+
 void TxTableModel::updateAllData() {    
     auto newmodeldata = new QList<TransactionItem>();
 

src/txtablemodel.h

@@ -19,6 +19,8 @@ public:
     QString  getMemo(int row);
     QString  getAddr(int row);
 
+    bool     exportToCsv(QString fileName) const;
+
     int      rowCount(const QModelIndex &parent) const;
     int      columnCount(const QModelIndex &parent) const;
     QVariant data(const QModelIndex &index, int role) const;