Add PEN and XLM tokens to Astar portal (#1348)

* first iteration

* add PendulumXcmRepository.ts

* fix build issues

* update PEN png

* PEN is native, so use `getNativeBalance`

* remove console.log

* use '0' instead of 'PEN'

* add XLM and EURC

* use triple '='

* update symbols and issuers

* remove EURC

* remove console

* xcPEN instead of PEN

* Add refactoring

* changing minimum amount

---------

Co-authored-by: Marcel Ebert <mail@marcel-ebert.de>

Author: b-yap

src/assets/img/token/PEN.svg

@@ -364,6 +364,15 @@ export let xcmChainObj: XcmChainObj = {
     subscan: 'https://hydration.subscan.io',
     isAstarNativeToken: true,
   },
+  [Chain.PENDULUM]: {
+    name: Chain.PENDULUM,
+    relayChain: Chain.POLKADOT,
+    img: require('/src/assets/img/token/PEN.svg'),
+    parachainId: parachainIds.PENDULUM,
+    endpoints: ['wss://rpc-pendulum.prd.pendulumchain.tech:443'],
+    subscan: 'https://pendulum.subscan.io/',
+    isAstarNativeToken: false,
+  },
 };
 
 export const xcmChains = objToArray(xcmChainObj);

src/assets/img/token/XLM.svg

@@ -175,6 +175,26 @@ export const xcmToken = {
       originChain: Chain.HYDRATION,
       minBridgeAmount: '5',
     },
+    {
+      symbol: 'xcPEN',
+      isNativeToken: true,
+      assetId: '18446744073709551634',
+      originAssetId: 'PEN',
+      logo: require('/src/assets/img/token/PEN.svg'),
+      isXcmCompatible: true,
+      originChain: Chain.PENDULUM,
+      minBridgeAmount: '2',
+    },
+    {
+      symbol: 'XLM.s',
+      isNativeToken: false,
+      assetId: '18446744073709551635',
+      originAssetId: 'XLM.s',
+      logo: require('/src/assets/img/token/XLM.svg'),
+      isXcmCompatible: true,
+      originChain: Chain.PENDULUM,
+      minBridgeAmount: '1',
+    },
   ],
   [endpointKey.SHIDEN]: [
     {

src/modules/xcm/index.ts

@@ -11,6 +11,7 @@ import {
   EquilibriumXcmRepository,
   UniqueXcmRepository,
   HydrationXcmRepository,
+  PendulumXcmRepository,
 } from 'src/v2/repositories/implementations';
 import { Chain } from 'src/v2/models/XcmModels';
 import { TypeMapping } from 'src/v2/config/types';
@@ -36,6 +37,7 @@ export const XcmRepositoryConfiguration: TypeMapping = {
   [Chain.EQUILIBRIUM]: EquilibriumXcmRepository,
   [Chain.UNIQUE]: UniqueXcmRepository,
   [Chain.HYDRATION]: HydrationXcmRepository,
+  [Chain.PENDULUM]: PendulumXcmRepository,
 };
 
 export type AstarToken = 'ASTR' | 'SDN';

src/modules/xcm/tokens/index.ts

@@ -22,6 +22,7 @@ export enum Chain {
   EQUILIBRIUM = 'Equilibrium',
   UNIQUE = 'Unique',
   HYDRATION = 'Hydration',
+  PENDULUM = 'Pendulum',
 }
 
 export enum parachainIds {
@@ -43,6 +44,7 @@ export enum parachainIds {
   EQUILIBRIUM = 2011,
   UNIQUE = 2037,
   HYDRATION = 2034,
+  PENDULUM = 2094,
 }
 
 export interface XcmChain {

src/v2/config/xcm/XcmRepositoryConfiguration.ts

@@ -19,6 +19,7 @@ export * from './xcm/BifrostXcmRepository';
 export * from './xcm/EquilibriumXcmRepository';
 export * from './xcm/UniqueXcmRepository';
 export * from './xcm/HydrationXcmRepository';
+export * from './xcm/PendulumXcmRepository';
 export * from './NftRepository';
 export * from './AccountUnificationRepository';
 export * from './InflationRepository';

src/v2/models/XcmModels.ts

@@ -0,0 +1,106 @@
+import { BN } from '@polkadot/util';
+import { XcmTokenInformation } from 'src/modules/xcm';
+import { container } from 'src/v2/common';
+import { ExtrinsicPayload, IApi, IApiFactory } from 'src/v2/integration';
+import { Asset } from 'src/v2/models';
+import { Symbols } from 'src/v2/symbols';
+import { XcmRepository } from '../XcmRepository';
+import { XcmChain } from 'src/v2/models/XcmModels';
+import { TokensAccounts } from 'src/v2/repositories/implementations/xcm/AcalaXcmRepository';
+import { decodeAddress } from '@polkadot/util-crypto';
+
+// Mapping object for token IDs
+const TOKEN_IDS: Record<string, any> = {
+  PEN: 'Native',
+  'XLM.s': { Stellar: 'StellarNative' },
+};
+
+export class PendulumXcmRepository extends XcmRepository {
+  constructor() {
+    const defaultApi = container.get<IApi>(Symbols.DefaultApi);
+    const apiFactory = container.get<IApiFactory>(Symbols.ApiFactory);
+    const registeredTokens = container.get<XcmTokenInformation[]>(Symbols.RegisteredTokens);
+    super(defaultApi, apiFactory, registeredTokens);
+  }
+
+  public async getTransferCall(
+    from: XcmChain,
+    to: XcmChain,
+    recipientAddress: string,
+    token: Asset,
+    amount: BN,
+    endpoint: string
+  ): Promise<ExtrinsicPayload> {
+    if (!to.parachainId) {
+      throw `Parachain id for ${to.name} is not defined`;
+    }
+
+    const tokenData = TOKEN_IDS[token.originAssetId];
+    if (!tokenData) {
+      throw `Token name for ${token.originAssetId} is not defined`;
+    }
+
+    const version = 'V3';
+
+    const AccountId32 = {
+      id: decodeAddress(recipientAddress),
+    };
+
+    const destination = {
+      [version]: {
+        parents: '1',
+        interior: {
+          X2: [
+            {
+              Parachain: to.parachainId,
+            },
+            {
+              AccountId32,
+            },
+          ],
+        },
+      },
+    };
+
+    const destWeight = { Unlimited: null };
+
+    return await this.buildTxCall(
+      from,
+      endpoint,
+      'xTokens',
+      'transfer',
+      tokenData,
+      amount,
+      destination,
+      destWeight
+    );
+  }
+
+  public async getTokenBalance(
+    address: string,
+    chain: XcmChain,
+    token: Asset,
+    isNativeToken: boolean,
+    endpoint: string
+  ): Promise<string> {
+    const api = await this.apiFactory.get(endpoint);
+
+    try {
+      if (isNativeToken) {
+        const nativeBalance = await this.getNativeBalance(address, chain, endpoint);
+        return nativeBalance.toString();
+      }
+
+      const currencyId = TOKEN_IDS[token.originAssetId];
+      if (!currencyId) {
+        console.error(`Token name for ${token.originAssetId} is not defined`);
+        return '0';
+      }
+      const bal = await api.query.tokens.accounts<TokensAccounts>(address, currencyId);
+      return bal.free.toString();
+    } catch (e) {
+      console.error(e);
+      return '0';
+    }
+  }
+}