THEA Withdrawals

.changeset/itchy-panthers-fly.md

@@ -0,0 +1,13 @@
+---
+"@polkadex/thea": major
+---
+
+We have successfully added all the chains for cross chain transfer to Polkadex. In this task, we will be adding the withdraw logic for THEA so that user can withdraw thier assets from Polkadex network to other network.
+
+1. Polkadex to AssetHub - USDT, DED, PINK, USDC
+2. Polkadex to Astar - ASTR
+3. Polkadex to Moonbeam - GLMR
+4. Polkadex to Interlay - IBTC
+5. Polkadex to Unique - UNQ
+6. Polkadex to Polkadot - DOT
+7. Polkadex to Phala - PHA

apps/cross-chain/app/components/polkadotEco.tsx

@@ -4,13 +4,13 @@ import { SubmittableExtrinsic } from "@polkadot/api/promise/types";
 import { Signer } from "@polkadot/api/types";
 import { getChainConnector, Thea } from "@polkadex/thea";
 
-const SOURCE_CHAIN = "Polkadot";
-const DESTINATION_CHAIN = "Polkadex";
-const SELECTED_ASSET = "DOT";
+const SOURCE_CHAIN = "Polkadex";
+const DESTINATION_CHAIN = "AssetHub";
+const SELECTED_ASSET = "USDT";
 
 const fromAddress = "5GLFKUxSXTf8MDDKM1vqEFb5TuV1q642qpQT964mrmjeKz4w";
 const toAddress = "5GLFKUxSXTf8MDDKM1vqEFb5TuV1q642qpQT964mrmjeKz4w";
-const amount = 0.01;
+const amount = 0.1;
 
 export const PolkadotEco = () => {
   const { getAllChains } = new Thea();

packages/thea/src/config/substrate/builders/ExtrinsicBuilder.ts

@@ -2,12 +2,14 @@ import { polkadotXcm } from "./pallets/polkadotXcm";
 import { xcmPallet } from "./pallets/xcmPallet";
 import { xTokens } from "./pallets/xTokens";
 import { xTransfer } from "./pallets/xTransfer";
+import { theaExecuter } from "./pallets/theaExecuter";
 
 export function ExtrinsicBuilderV2() {
   return {
     xTokens,
     xTransfer,
     xcmPallet,
     polkadotXcm,
+    theaExecuter,
   };
 }

packages/thea/src/config/substrate/builders/pallets/theaExecuter.ts

@@ -0,0 +1,68 @@
+import {
+  XcmVersion,
+  ExtrinsicConfigBuilder,
+  ExtrinsicConfig,
+} from "@moonbeam-network/xcm-builder";
+
+import { getExtrinsicAccount } from "../ExtrinsicBuilder.utils";
+
+import { toBeneficiary } from "./theaExecuter.utils";
+
+const pallet = "theaExecutor";
+
+const parachainWithdraw = () => {
+  const func = "parachainWithdraw";
+  return {
+    X2: () => ({
+      sufficient: (): ExtrinsicConfigBuilder => ({
+        build: ({ address, amount, asset, destination }) =>
+          new ExtrinsicConfig({
+            module: pallet,
+            func,
+            getArgs: () => {
+              const version = XcmVersion.v3;
+              const account = getExtrinsicAccount(address);
+              return [
+                asset,
+                amount,
+                toBeneficiary(version, destination, account),
+                null,
+                null,
+                true,
+                false,
+              ];
+            },
+          }),
+      }),
+      insufficient: (
+        feeAssetId: string,
+        feeAmount: number
+      ): ExtrinsicConfigBuilder => ({
+        build: ({ address, amount, asset, destination }) =>
+          new ExtrinsicConfig({
+            module: pallet,
+            func,
+            getArgs: () => {
+              const version = XcmVersion.v3;
+              const account = getExtrinsicAccount(address);
+              return [
+                asset,
+                amount,
+                toBeneficiary(version, destination, account),
+                feeAssetId,
+                feeAmount,
+                true,
+                false,
+              ];
+            },
+          }),
+      }),
+    }),
+  };
+};
+
+export const theaExecuter = () => {
+  return {
+    parachainWithdraw,
+  };
+};

packages/thea/src/config/substrate/builders/pallets/theaExecuter.utils.ts

@@ -0,0 +1,33 @@
+import { XcmVersion } from "@moonbeam-network/xcm-builder";
+import { AnyChain } from "@moonbeam-network/xcm-types";
+
+export const toBeneficiary = (
+  version: XcmVersion,
+  destination: AnyChain,
+  account: any
+) => {
+  if (destination.key === "polkadot") {
+    return {
+      [version]: {
+        parents: 1,
+        interior: {
+          X1: account,
+        },
+      },
+    };
+  }
+
+  return {
+    [version]: {
+      parents: 1,
+      interior: {
+        X2: [
+          {
+            Parachain: destination.parachainId,
+          },
+          account,
+        ],
+      },
+    },
+  };
+};