fix: handle output spending fee

Author: Jasonvdb

lib/android/src/main/java/com/reactnativeldk/LdkModule.kt

@@ -592,8 +592,8 @@ class LdkModule(reactContext: ReactApplicationContext) : ReactContextBaseJavaMod
     //MARK: Update methods
 
     @ReactMethod
-    fun updateFees(anchorChannelFee: Double, nonAnchorChannelFee: Double, channelCloseMinimum: Double, minAllowedAnchorChannelRemoteFee: Double, onChainSweep: Double, minAllowedNonAnchorChannelRemoteFee: Double, promise: Promise) {
-        feeEstimator.update(anchorChannelFee.toInt(), nonAnchorChannelFee.toInt(), channelCloseMinimum.toInt(), minAllowedAnchorChannelRemoteFee.toInt(), onChainSweep.toInt(), minAllowedNonAnchorChannelRemoteFee.toInt())
+    fun updateFees(anchorChannelFee: Double, nonAnchorChannelFee: Double, channelCloseMinimum: Double, minAllowedAnchorChannelRemoteFee: Double, onChainSweep: Double, minAllowedNonAnchorChannelRemoteFee: Double, outputSpendingFee: Double, promise: Promise) {
+        feeEstimator.update(anchorChannelFee.toInt(), nonAnchorChannelFee.toInt(), channelCloseMinimum.toInt(), minAllowedAnchorChannelRemoteFee.toInt(), onChainSweep.toInt(), minAllowedNonAnchorChannelRemoteFee.toInt(), outputSpendingFee.toInt())
         handleResolve(promise, LdkCallbackResponses.fees_updated)
     }
 

lib/android/src/main/java/com/reactnativeldk/classes/LdkFeeEstimator.kt

@@ -11,14 +11,16 @@ class LdkFeeEstimator {
     var minAllowedAnchorChannelRemoteFee: Int = 0
     var onChainSweep: Int = 0
     var minAllowedNonAnchorChannelRemoteFee: Int = 0
+    var outputSpendingFee: Int = 0
 
-    fun update(anchorChannelFee: Int, nonAnchorChannelFee: Int, channelCloseMinimum: Int, minAllowedAnchorChannelRemoteFee: Int, onChainSweep: Int, minAllowedNonAnchorChannelRemoteFee: Int) {
+    fun update(anchorChannelFee: Int, nonAnchorChannelFee: Int, channelCloseMinimum: Int, minAllowedAnchorChannelRemoteFee: Int, onChainSweep: Int, minAllowedNonAnchorChannelRemoteFee: Int, outputSpendingFee: Int) {
         this.anchorChannelFee = anchorChannelFee
         this.nonAnchorChannelFee = nonAnchorChannelFee
         this.channelCloseMinimum = channelCloseMinimum
         this.minAllowedAnchorChannelRemoteFee = minAllowedAnchorChannelRemoteFee
         this.onChainSweep = onChainSweep
         this.minAllowedNonAnchorChannelRemoteFee = minAllowedNonAnchorChannelRemoteFee
+        this.outputSpendingFee = outputSpendingFee
 
         LdkEventEmitter.send(EventTypes.native_log, "Fee estimator updated")
     }
@@ -31,10 +33,7 @@ class LdkFeeEstimator {
             ConfirmationTarget.LDKConfirmationTarget_MinAllowedAnchorChannelRemoteFee -> minAllowedAnchorChannelRemoteFee
             ConfirmationTarget.LDKConfirmationTarget_OnChainSweep -> onChainSweep
             ConfirmationTarget.LDKConfirmationTarget_MinAllowedNonAnchorChannelRemoteFee -> minAllowedNonAnchorChannelRemoteFee
-            else -> {
-                LdkEventEmitter.send(EventTypes.native_log, "ERROR: New ConfirmationTarget added. Update LdkFeeEstimator.")
-                return@new_impl 0
-            }
+            ConfirmationTarget.LDKConfirmationTarget_OutputSpendingFee -> outputSpendingFee
         }
     }
 }

lib/ios/Classes/LdkFeeEstimator.swift

@@ -15,21 +15,23 @@ class LdkFeeEstimator: FeeEstimator {
     private var minAllowedAnchorChannelRemoteFee: UInt32 = 0
     private var onChainSweep: UInt32 = 0
     private var minAllowedNonAnchorChannelRemoteFee: UInt32 = 0
-    
-    func update(anchorChannelFee: UInt32, nonAnchorChannelFee: UInt32, channelCloseMinimum: UInt32, minAllowedAnchorChannelRemoteFee: UInt32, onChainSweep: UInt32, minAllowedNonAnchorChannelRemoteFee: UInt32) {
+    private var outputSpendingFee: UInt32 = 0
+
+    func update(anchorChannelFee: UInt32, nonAnchorChannelFee: UInt32, channelCloseMinimum: UInt32, minAllowedAnchorChannelRemoteFee: UInt32, onChainSweep: UInt32, minAllowedNonAnchorChannelRemoteFee: UInt32, outputSpendingFee: UInt32) {
         self.anchorChannelFee = anchorChannelFee
         self.nonAnchorChannelFee = nonAnchorChannelFee
         self.channelCloseMinimum = channelCloseMinimum
         self.minAllowedAnchorChannelRemoteFee = minAllowedAnchorChannelRemoteFee
         self.onChainSweep = onChainSweep
         self.minAllowedNonAnchorChannelRemoteFee = minAllowedNonAnchorChannelRemoteFee
+        self.outputSpendingFee = outputSpendingFee
 
         LdkEventEmitter.shared.send(withEvent: .native_log, body: "Fee estimator updated")
     }
-    
+
     override func getEstSatPer1000Weight(confirmationTarget: Bindings.ConfirmationTarget) -> UInt32 {
         let target = confirmationTarget
-        
+
         switch target {
         case .AnchorChannelFee:
             return anchorChannelFee
@@ -43,9 +45,8 @@ class LdkFeeEstimator: FeeEstimator {
             return onChainSweep
         case .MinAllowedNonAnchorChannelRemoteFee:
             return minAllowedNonAnchorChannelRemoteFee
-        @unknown default:
-            LdkEventEmitter.shared.send(withEvent: .native_log, body: "ERROR: New ConfirmationTarget added. Update LdkFeeEstimator.")
-            return 0
+        case .OutputSpendingFee:
+            return outputSpendingFee
         }
     }
 }

lib/ios/Ldk.swift

@@ -618,14 +618,15 @@ class Ldk: NSObject {
     // MARK: Update methods
 
     @objc
-    func updateFees(_ anchorChannelFee: NSInteger, nonAnchorChannelFee: NSInteger, channelCloseMinimum: NSInteger, minAllowedAnchorChannelRemoteFee: NSInteger, onChainSweep: NSInteger, minAllowedNonAnchorChannelRemoteFee: NSInteger, resolve: @escaping RCTPromiseResolveBlock, reject: @escaping RCTPromiseRejectBlock) {
+    func updateFees(_ anchorChannelFee: NSInteger, nonAnchorChannelFee: NSInteger, channelCloseMinimum: NSInteger, minAllowedAnchorChannelRemoteFee: NSInteger, onChainSweep: NSInteger, minAllowedNonAnchorChannelRemoteFee: NSInteger, outputSpendingFee: NSInteger, resolve: @escaping RCTPromiseResolveBlock, reject: @escaping RCTPromiseRejectBlock) {
         feeEstimator.update(
             anchorChannelFee: UInt32(anchorChannelFee),
             nonAnchorChannelFee: UInt32(nonAnchorChannelFee),
             channelCloseMinimum: UInt32(channelCloseMinimum),
             minAllowedAnchorChannelRemoteFee: UInt32(minAllowedAnchorChannelRemoteFee),
             onChainSweep: UInt32(onChainSweep),
-            minAllowedNonAnchorChannelRemoteFee: UInt32(minAllowedNonAnchorChannelRemoteFee)
+            minAllowedNonAnchorChannelRemoteFee: UInt32(minAllowedNonAnchorChannelRemoteFee),
+            outputSpendingFee: UInt32(outputSpendingFee)
         )
         return handleResolve(resolve, .fees_updated)
     }

lib/src/ldk.ts

@@ -346,6 +346,7 @@ class LDK {
 			minAllowedAnchorChannelRemoteFee,
 			onChainSweep,
 			minAllowedNonAnchorChannelRemoteFee,
+			outputSpendingFee,
 		} = fees;
 		try {
 			const satsPerKw = 250;
@@ -356,6 +357,7 @@ class LDK {
 				minAllowedAnchorChannelRemoteFee * satsPerKw,
 				onChainSweep * satsPerKw,
 				minAllowedNonAnchorChannelRemoteFee * satsPerKw,
+				outputSpendingFee * satsPerKw,
 			);
 			this.writeDebugToLog('updateFees', fees);
 			return ok(res);

lib/src/lightning-manager.ts

@@ -140,6 +140,7 @@ class LightningManager {
 		minAllowedAnchorChannelRemoteFee: 5,
 		minAllowedNonAnchorChannelRemoteFee: 5,
 		onChainSweep: 5,
+		outputSpendingFee: 5,
 	});
 	broadcastTransaction: TBroadcastTransaction = async (): Promise<any> => {};
 	lspLogEvent: TLspLogEvent | undefined;

lib/src/utils/types.ts

@@ -252,6 +252,7 @@ export type TFeeUpdateReq = {
 	minAllowedAnchorChannelRemoteFee: number;
 	onChainSweep: number;
 	minAllowedNonAnchorChannelRemoteFee: number;
+	outputSpendingFee: number;
 };
 
 export type TPeer = {