From b094a2408c4af4a42f3f21bc1fa428f371ceef25 Mon Sep 17 00:00:00 2001
From: mmaurello <93129175+mmaurello@users.noreply.github.com>
Date: Tue, 17 Dec 2024 12:10:43 +0100
Subject: [PATCH] enable sending only remote execution in MRL (#407)

---
 packages/builder/src/mrl/MrlBuilder.interfaces.ts         | 1 +
 .../wormhole/extrinsic/polkadotXcm/polkadotXcm.ts         | 8 ++++++--
 packages/mrl/src/getTransferData/getTransferData.ts       | 2 ++
 packages/mrl/src/getTransferData/getTransferData.utils.ts | 3 +++
 packages/mrl/src/mrl.interfaces.ts                        | 1 +
 5 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/packages/builder/src/mrl/MrlBuilder.interfaces.ts b/packages/builder/src/mrl/MrlBuilder.interfaces.ts
index a3c83f3f..44392f96 100644
--- a/packages/builder/src/mrl/MrlBuilder.interfaces.ts
+++ b/packages/builder/src/mrl/MrlBuilder.interfaces.ts
@@ -26,6 +26,7 @@ export interface MrlBuilderParams extends BuilderParams<AnyChain> {
   moonAsset: ChainAsset;
   moonChain: EvmParachain;
   moonGasLimit?: bigint;
+  sendOnlyRemoteExecution?: boolean;
   transact?: Transact;
 }
 
diff --git a/packages/builder/src/mrl/providers/wormhole/extrinsic/polkadotXcm/polkadotXcm.ts b/packages/builder/src/mrl/providers/wormhole/extrinsic/polkadotXcm/polkadotXcm.ts
index 7f74d5de..ac110c0e 100644
--- a/packages/builder/src/mrl/providers/wormhole/extrinsic/polkadotXcm/polkadotXcm.ts
+++ b/packages/builder/src/mrl/providers/wormhole/extrinsic/polkadotXcm/polkadotXcm.ts
@@ -30,6 +30,7 @@ export function polkadotXcm() {
         moonAsset,
         moonChain,
         moonApi,
+        sendOnlyRemoteExecution,
         source,
         sourceAddress,
         sourceApi,
@@ -85,11 +86,14 @@ export function polkadotXcm() {
           transact,
         });
 
-        // TODO add here ability to only send the remote execution (only `send`)
+        const transactionsToSend = sendOnlyRemoteExecution
+          ? [send]
+          : [...assetTransferTxs, send];
+
         return new ExtrinsicConfig({
           module: 'utility',
           func: 'batchAll',
-          getArgs: () => [[...assetTransferTxs, send]],
+          getArgs: () => [transactionsToSend],
         });
       },
     }),
diff --git a/packages/mrl/src/getTransferData/getTransferData.ts b/packages/mrl/src/getTransferData/getTransferData.ts
index fb675777..d56ffcb6 100644
--- a/packages/mrl/src/getTransferData/getTransferData.ts
+++ b/packages/mrl/src/getTransferData/getTransferData.ts
@@ -110,6 +110,7 @@ export async function getTransferData({
       isAutomatic,
       { evmSigner, polkadotSigner }: Partial<Signers>,
       statusCallback,
+      sendOnlyRemoteExecution,
     ): Promise<string[]> {
       const source = route.source.chain;
 
@@ -130,6 +131,7 @@ export async function getTransferData({
         feeAsset,
         isAutomatic,
         route,
+        sendOnlyRemoteExecution,
         sourceAddress,
       });
 
diff --git a/packages/mrl/src/getTransferData/getTransferData.utils.ts b/packages/mrl/src/getTransferData/getTransferData.utils.ts
index d9223a44..e6293943 100644
--- a/packages/mrl/src/getTransferData/getTransferData.utils.ts
+++ b/packages/mrl/src/getTransferData/getTransferData.utils.ts
@@ -102,6 +102,7 @@ export interface BuildTransferParams {
   feeAsset: AssetAmount;
   isAutomatic: boolean;
   route: AssetRoute;
+  sendOnlyRemoteExecution?: boolean;
   sourceAddress: string;
 }
 
@@ -133,6 +134,7 @@ export async function getMrlBuilderParams({
   feeAsset,
   isAutomatic,
   route,
+  sendOnlyRemoteExecution,
   sourceAddress,
 }: BuildTransferParams): Promise<MrlBuilderParams> {
   if (!route.mrl) {
@@ -162,6 +164,7 @@ export async function getMrlBuilderParams({
     moonApi,
     moonAsset: moonChain.nativeAsset,
     moonChain,
+    sendOnlyRemoteExecution,
     source,
     sourceAddress,
     sourceApi,
diff --git a/packages/mrl/src/mrl.interfaces.ts b/packages/mrl/src/mrl.interfaces.ts
index 441d6dfe..64564602 100644
--- a/packages/mrl/src/mrl.interfaces.ts
+++ b/packages/mrl/src/mrl.interfaces.ts
@@ -26,6 +26,7 @@ export interface TransferData {
     isAutomatic: boolean,
     signers: Signers,
     statusCallback?: (params: ISubmittableResult) => void,
+    sendOnlyRemoteExecution?: boolean,
   ): Promise<string[]>;
 }