Add dev fee for testnet

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(); }