From 7e022ff930727e43ffdc2cb0687298f7ac81091a Mon Sep 17 00:00:00 2001
From: Roei Erez <roeierez@gmail.com>
Date: Fri, 21 Jun 2024 00:02:18 +0300
Subject: [PATCH] Use constant for lowball fee rate

---
 lib/core/src/model.rs     | 2 ++
 lib/core/src/sdk.rs       | 2 +-
 lib/core/src/send_swap.rs | 4 ++--
 3 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/core/src/model.rs b/lib/core/src/model.rs
index de99bdf..995e539 100644
--- a/lib/core/src/model.rs
+++ b/lib/core/src/model.rs
@@ -18,6 +18,8 @@ use crate::receive_swap::{
 };
 use crate::utils;
 
+pub const LOWBALL_FEE_RATE: f32 = 0.01;
+
 /// Configuration for the Liquid SDK
 #[derive(Clone, Debug, Serialize)]
 pub struct Config {
diff --git a/lib/core/src/sdk.rs b/lib/core/src/sdk.rs
index 0d19de3..98cdb3b 100644
--- a/lib/core/src/sdk.rs
+++ b/lib/core/src/sdk.rs
@@ -565,7 +565,7 @@ impl LiquidSdk {
     async fn estimate_onchain_tx_fee(&self, amount_sat: u64, address: &str) -> Result<u64> {
         Ok(self
             .onchain_wallet
-            .build_tx(Some(10.0), address, amount_sat)
+            .build_tx(Some(LOWBALL_FEE_RATE * 1000.0), address, amount_sat)
             .await?
             .all_fees()
             .values()
diff --git a/lib/core/src/send_swap.rs b/lib/core/src/send_swap.rs
index f1c7ae5..8bce0b1 100644
--- a/lib/core/src/send_swap.rs
+++ b/lib/core/src/send_swap.rs
@@ -13,7 +13,7 @@ use tokio::sync::{broadcast, Mutex};
 
 use crate::chain::liquid::LiquidChainService;
 use crate::model::PaymentState::{Complete, Created, Failed, Pending, TimedOut};
-use crate::model::{Config, SendSwap};
+use crate::model::{Config, SendSwap, LOWBALL_FEE_RATE};
 use crate::swapper::Swapper;
 use crate::wallet::OnchainWallet;
 use crate::{ensure_sdk, get_invoice_amount};
@@ -196,7 +196,7 @@ impl SendSwapStateHandler {
         let lockup_tx = self
             .onchain_wallet
             .build_tx(
-                Some(10.0),
+                Some(LOWBALL_FEE_RATE * 1000.0),
                 &create_response.address,
                 create_response.expected_amount,
             )