From dab604e010da4a77cd4ecfc2514f2b4d3dac48b6 Mon Sep 17 00:00:00 2001
From: xiphon <xiphon@protonmail.com>
Date: Wed, 22 Jan 2020 16:30:47 +0000
Subject: wallet2_api: implement estimateTransactionFee

---
 src/wallet/api/wallet.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

(limited to 'src/wallet/api/wallet.cpp')

diff --git a/src/wallet/api/wallet.cpp b/src/wallet/api/wallet.cpp
index 6200c7a1f..33047f703 100644
--- a/src/wallet/api/wallet.cpp
+++ b/src/wallet/api/wallet.cpp
@@ -1671,6 +1671,26 @@ void WalletImpl::disposeTransaction(PendingTransaction *t)
     delete t;
 }
 
+uint64_t WalletImpl::estimateTransactionFee(const std::vector<std::pair<std::string, uint64_t>> &destinations,
+                                            PendingTransaction::Priority priority) const
+{
+    const size_t pubkey_size = 33;
+    const size_t encrypted_paymentid_size = 11;
+    const size_t extra_size = pubkey_size + encrypted_paymentid_size;
+
+    return m_wallet->estimate_fee(
+        m_wallet->use_fork_rules(HF_VERSION_PER_BYTE_FEE, 0),
+        m_wallet->use_fork_rules(4, 0),
+        1,
+        m_wallet->get_min_ring_size() - 1,
+        destinations.size() + 1,
+        extra_size,
+        m_wallet->use_fork_rules(8, 0),
+        m_wallet->get_base_fee(),
+        m_wallet->get_fee_multiplier(m_wallet->adjust_priority(static_cast<uint32_t>(priority))),
+        m_wallet->get_fee_quantization_mask());
+}
+
 TransactionHistory *WalletImpl::history()
 {
     return m_history.get();
-- 
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