Add dev fee for testnet

src/confirm.ui

@@ -39,6 +39,16 @@
       <string>To</string>
      </property>
      <layout class="QGridLayout" name="gridLayout">
+      <item row="2" column="1">
+       <widget class="QLabel" name="minerFee">
+        <property name="text">
+         <string>Miner Amount</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
       <item row="0" column="0">
        <widget class="QLabel" name="Addr1">
         <property name="text">
@@ -66,6 +76,30 @@
         </property>
        </widget>
       </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="labelMinerFee">
+        <property name="text">
+         <string>Miner Fee</string>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="0">
+       <widget class="QLabel" name="labelDevFee">
+        <property name="text">
+         <string>Dev Fee</string>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="1">
+       <widget class="QLabel" name="devFee">
+        <property name="text">
+         <string>Dev Fee Amount</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>
@@ -89,13 +123,6 @@
      </property>
     </widget>
    </item>
-   <item>
-    <widget class="QLabel" name="feesLabel">
-     <property name="text">
-      <string/>
-     </property>
-    </widget>
-   </item>
    <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">

src/sendtab.cpp

@@ -42,7 +42,8 @@ void MainWindow::setupSendTab() {
     QObject::connect(ui->tabWidget, &QTabWidget::currentChanged, [=] (int pos) {
         if (pos == 1) {
             // Set the fees
-            ui->sendTxFees->setText("0.0001 " + Utils::getTokenName());
+            ui->sendTxFees->setText(QString::number(Utils::getTotalFee(), 'g', 8) %
+                                    " " % Utils::getTokenName());
 
             // Set focus to the first address box
             ui->Address1->setFocus();
@@ -221,7 +222,7 @@ void MainWindow::maxAmountChecked(int checked) {
             auto amt  = ui->sendToWidgets->findChild<QLineEdit*>(QString("Amount")  % QString::number(i+1));
             sumAllAmounts += amt->text().toDouble();
         }
-        sumAllAmounts += settings->fees();
+        sumAllAmounts += Utils::getTotalFee();
 
         auto addr = ui->inputsCombo->currentText().split("(")[0];
 
@@ -276,6 +277,8 @@ void MainWindow::sendButton() {
         return;
     }
 
+    auto devAddress = Utils::getDevAddr(fromAddr, toAddrs);
+
     // Get all the addresses and amounts
     json allRecepients = json::array();
 
@@ -336,6 +339,28 @@ void MainWindow::sendButton() {
 		}
     }
 
+    // Add the dev fee to the transaction
+    if (!devAddress.isEmpty() && Utils::getDevFee() > 0) {
+        json devFee = json::object();
+        devFee["address"] = devAddress.toStdString();
+        devFee["amount"]  = Utils::getDevFee();
+        allRecepients.push_back(devFee);
+    }    
+
+    // Add two rows for fees
+    {
+        confirm.labelMinerFee->setText("Miner Fee");
+        confirm.minerFee->setText(QString::number(Utils::getMinerFee(), 'g', 8) % " " % Utils::getTokenName());
+
+        if (!devAddress.isEmpty() && Utils::getDevFee() > 0) {
+            confirm.labelDevFee->setText("Dev Fee");
+            confirm.devFee->setText(QString::number(Utils::getMinerFee(), 'g', 8) % " " % Utils::getTokenName());
+        } else {
+            confirm.labelDevFee->setText("");
+            confirm.devFee->setText("");
+        }
+    }
+
     // Add sender
     json params = json::array();
     params.push_back(fromAddr.toStdString());
@@ -344,9 +369,6 @@ void MainWindow::sendButton() {
 	// And show it in the confirm dialog 
 	confirm.sendFrom->setText(fnSplitAddressForWrap(fromAddr));
 
-    // Fees in the confirm dialog
-    confirm.feesLabel->setText("Fee 0.0001 " % Utils::getTokenName());
-
 	// Show the dialog and submit it if the user confirms
 	if (d.exec() == QDialog::Accepted) {
 		rpc->sendZTransaction(params, [=](const json& reply) {

src/settings.h

@@ -20,7 +20,6 @@ public:
 	QString getHost();
 	QString getPort();
 
-    double  fees() { return 0.0001; }
 	bool    loadFromSettings();
     bool    loadFromFile();
 

src/ui_confirm.h

@@ -31,12 +31,15 @@ public:
     QLabel *sendFrom;
     QGroupBox *sendToAddrs;
     QGridLayout *gridLayout;
+    QLabel *minerFee;
     QLabel *Addr1;
     QLabel *Amt1;
     QLabel *Memo1;
+    QLabel *labelMinerFee;
+    QLabel *labelDevFee;
+    QLabel *devFee;
     QSpacerItem *verticalSpacer;
     QFrame *line;
-    QLabel *feesLabel;
     QDialogButtonBox *buttonBox;
 
     void setupUi(QDialog *confirm)
@@ -63,6 +66,12 @@ public:
         sendToAddrs->setObjectName(QStringLiteral("sendToAddrs"));
         gridLayout = new QGridLayout(sendToAddrs);
         gridLayout->setObjectName(QStringLiteral("gridLayout"));
+        minerFee = new QLabel(sendToAddrs);
+        minerFee->setObjectName(QStringLiteral("minerFee"));
+        minerFee->setAlignment(Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter);
+
+        gridLayout->addWidget(minerFee, 2, 1, 1, 1);
+
         Addr1 = new QLabel(sendToAddrs);
         Addr1->setObjectName(QStringLiteral("Addr1"));
         Addr1->setWordWrap(true);
@@ -80,6 +89,22 @@ public:
 
         gridLayout->addWidget(Memo1, 1, 0, 1, 2);
 
+        labelMinerFee = new QLabel(sendToAddrs);
+        labelMinerFee->setObjectName(QStringLiteral("labelMinerFee"));
+
+        gridLayout->addWidget(labelMinerFee, 2, 0, 1, 1);
+
+        labelDevFee = new QLabel(sendToAddrs);
+        labelDevFee->setObjectName(QStringLiteral("labelDevFee"));
+
+        gridLayout->addWidget(labelDevFee, 3, 0, 1, 1);
+
+        devFee = new QLabel(sendToAddrs);
+        devFee->setObjectName(QStringLiteral("devFee"));
+        devFee->setAlignment(Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter);
+
+        gridLayout->addWidget(devFee, 3, 1, 1, 1);
+
 
         verticalLayout->addWidget(sendToAddrs);
 
@@ -94,11 +119,6 @@ public:
 
         verticalLayout->addWidget(line);
 
-        feesLabel = new QLabel(confirm);
-        feesLabel->setObjectName(QStringLiteral("feesLabel"));
-
-        verticalLayout->addWidget(feesLabel);
-
         buttonBox = new QDialogButtonBox(confirm);
         buttonBox->setObjectName(QStringLiteral("buttonBox"));
         buttonBox->setOrientation(Qt::Horizontal);
@@ -120,10 +140,13 @@ public:
         groupBox->setTitle(QApplication::translate("confirm", "From", nullptr));
         sendFrom->setText(QString());
         sendToAddrs->setTitle(QApplication::translate("confirm", "To", nullptr));
+        minerFee->setText(QApplication::translate("confirm", "Miner Amount", nullptr));
         Addr1->setText(QApplication::translate("confirm", "TextLabel", nullptr));
         Amt1->setText(QApplication::translate("confirm", "TextLabel", nullptr));
         Memo1->setText(QApplication::translate("confirm", "TextLabel", nullptr));
-        feesLabel->setText(QString());
+        labelMinerFee->setText(QApplication::translate("confirm", "Miner Fee", nullptr));
+        labelDevFee->setText(QApplication::translate("confirm", "Dev Fee", nullptr));
+        devFee->setText(QApplication::translate("confirm", "Dev Fee Amount", nullptr));
     } // retranslateUi
 
 };

src/utils.cpp

@@ -1,5 +1,6 @@
 #include "utils.h"
 #include "settings.h"
+#include "mainwindow.h"
 
 const QString Utils::txidStatusMessage = QString("Tx submitted (right click to copy) txid:");
 
@@ -9,4 +10,51 @@ const QString Utils::getTokenName() {
     } else {
         return "ZEC";
     }
-}
+}
+
+// Get the dev fee address based on the transaction
+const QString Utils::getDevAddr(const QString& fromAddr, const QList<ToFields>& toAddrs) {
+    auto testnetAddrLookup = [=] (const QString& addr) -> QString {
+        if (addr.startsWith("ztestsapling")) {
+            return "ztestsapling1kdp74adyfsmm9838jaupgfyx3npgw8ut63stjjx757pc248cuc0ymzphqeux60c64qe5qt68ygh";
+        } else if (addr.startsWith("zt")) {
+            return "ztbGDqgkmXQjheivgeirwEvJLD4SUNqsWCGwxwVg4YpGz1ARR8P2rXaptkT14z3NDKamcxNmQuvmvktyokMs7HkutRNSx1D";
+        } else {
+            return QString();
+        }
+    };
+
+    if (Settings::getInstance()->isTestnet()) {
+        auto devAddr = testnetAddrLookup(fromAddr);
+        if (!devAddr.isEmpty()) {
+            return devAddr;
+        }
+
+        // t-Addr, find if it is going to a sprout or sapling address
+        for (const ToFields& to : toAddrs) {
+            devAddr = testnetAddrLookup(to.addr);
+            if (!devAddr.isEmpty()) {
+                return devAddr;
+            }
+        }
+        
+        // If this is a t-Addr -> t-Addr transaction, use the sapling address by default
+        return testnetAddrLookup("ztestsapling");
+    } else {
+        // Mainnet doesn't have a fee yet!
+        return QString();
+    }
+}
+
+
+double Utils::getMinerFee() {
+    return 0.0001;
+}
+double Utils::getDevFee() {
+    if (Settings::getInstance()->isTestnet()) {
+        return 0.0001;
+    } else {
+        return 0;
+    }
+}
+double Utils::getTotalFee() { return getMinerFee() + getDevFee(); }

src/utils.h

@@ -3,12 +3,19 @@
 
 #include "precompiled.h"
 
+struct ToFields;
+
 class Utils
 {
 public:
 	static const QString txidStatusMessage;
 
 	static const QString getTokenName();
+	static const QString getDevAddr(const QString& fromAddr, const QList<ToFields>& toAddrs);
+
+	static double  getMinerFee();
+	static double  getDevFee();
+	static double  getTotalFee();
 
 	static const int 	 updateSpeed = 20 * 1000;	// 20 sec
 private: