Make num_blocks_from_conf_target usable outside of Wallet

Author: tnull

src/wallet.rs

@@ -122,14 +122,8 @@ where
 			ConfirmationTarget::HighPriority,
 		];
 		for target in confirmation_targets {
-			let num_blocks = match target {
-				ConfirmationTarget::MempoolMinimum => 1008,
-				ConfirmationTarget::Background => 144,
-				ConfirmationTarget::Normal => 12,
-				ConfirmationTarget::HighPriority => 1,
-			};
-
-			let est_fee_rate = self.blockchain.estimate_fee(num_blocks).await;
+			let num_blocks = num_blocks_from_conf_target(target);
+			let est_fee_rate = self.blockchain.estimate_fee(num_blocks as usize).await;
 
 			match est_fee_rate {
 				Ok(rate) => {
@@ -347,6 +341,15 @@ where
 	}
 }
 
+pub(crate) fn num_blocks_from_conf_target(target: ConfirmationTarget) -> u32 {
+	match target {
+		ConfirmationTarget::MempoolMinimum => 1008,
+		ConfirmationTarget::Background => 144,
+		ConfirmationTarget::Normal => 12,
+		ConfirmationTarget::HighPriority => 1,
+	}
+}
+
 /// Similar to [`KeysManager`], but overrides the destination and shutdown scripts so they are
 /// directly spendable by the BDK wallet.
 pub struct WalletKeysManager<D, L: Deref>