From b20b956e15184d39925ac415020ea886c7d47e87 Mon Sep 17 00:00:00 2001
From: xiphon <xiphon@protonmail.com>
Date: Thu, 4 Feb 2021 11:32:30 +0000
Subject: Wallet: estimateTransactionFeeAsync - multi dest support

---
 src/libwalletqt/Wallet.cpp | 37 ++++++++++++++++++++++++++-----------
 1 file changed, 26 insertions(+), 11 deletions(-)

(limited to 'src/libwalletqt/Wallet.cpp')

diff --git a/src/libwalletqt/Wallet.cpp b/src/libwalletqt/Wallet.cpp
index 010bb487..66df9077 100644
--- a/src/libwalletqt/Wallet.cpp
+++ b/src/libwalletqt/Wallet.cpp
@@ -626,17 +626,32 @@ void Wallet::disposeTransaction(UnsignedTransaction *t)
     delete t;
 }
 
-void Wallet::estimateTransactionFeeAsync(const QString &destination,
-                                         quint64 amount,
-                                         PendingTransaction::Priority priority,
-                                         const QJSValue &callback)
-{
-    m_scheduler.run([this, destination, amount, priority] {
-        const uint64_t fee = m_walletImpl->estimateTransactionFee(
-            {std::make_pair(destination.toStdString(), amount)},
-            static_cast<Monero::PendingTransaction::Priority>(priority));
-        return QJSValueList({QString::fromStdString(Monero::Wallet::displayAmount(fee))});
-    }, callback);
+void Wallet::estimateTransactionFeeAsync(
+    const QVector<QString> &destinationAddresses,
+    const QVector<quint64> &amounts,
+    PendingTransaction::Priority priority,
+    const QJSValue &callback)
+{
+    m_scheduler.run(
+        [this, destinationAddresses, amounts, priority] {
+            if (destinationAddresses.size() != amounts.size())
+            {
+                return QJSValueList({""});
+            }
+
+            std::vector<std::pair<std::string, uint64_t>> destinations;
+            destinations.reserve(destinationAddresses.size());
+            for (size_t index = 0; index < destinationAddresses.size(); ++index)
+            {
+                destinations.emplace_back(std::make_pair(destinationAddresses[index].toStdString(), amounts[index]));
+            }
+
+            const uint64_t fee = m_walletImpl->estimateTransactionFee(
+                destinations,
+                static_cast<Monero::PendingTransaction::Priority>(priority));
+            return QJSValueList({QString::fromStdString(Monero::Wallet::displayAmount(fee))});
+        },
+        callback);
 }
 
 TransactionHistory *Wallet::history() const
-- 
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