feat:Support for BNC and vDOT assets (#658)

* feat:Support for BNC and vDOT assets

* Fix some errors

* Update BifrostXcmRepository.ts

* Add some constants

src/modules/xcm/index.ts

@@ -199,6 +199,15 @@ export const xcmChainObj: XcmChainObj = {
     subscan: 'https://phala.subscan.io',
     isAstarNativeToken: true,
   },
+  [Chain.BIFROST_POLKADOT]: {
+    name: Chain.BIFROST_POLKADOT,
+    relayChain: Chain.POLKADOT,
+    img: 'https://polkadot.js.org/apps/static/bifrost.76510acf..svg',
+    parachainId: parachainIds.BIFROST_POLKADOT,
+    endpoint: 'wss://hk.p.bifrost-rpc.liebi.com/ws',
+    subscan: 'https://bifrost.subscan.io/',
+    isAstarNativeToken: true,
+  },
 };
 
 export const xcmChains = objToArray(xcmChainObj);

src/modules/xcm/tokens/index.ts

@@ -104,6 +104,26 @@ export const xcmToken = {
       originChain: Chain.PHALA,
       minBridgeAmount: '0.2',
     },
+    {
+      symbol: 'BNC',
+      isNativeToken: true,
+      assetId: '18446744073709551623',
+      originAssetId: 'BNC',
+      logo: 'https://bifrost-kusama.subscan.io/static/img/bifrost.42f1933c.svg',
+      isXcmCompatible: true,
+      originChain: Chain.BIFROST_POLKADOT,
+      minBridgeAmount: '0.1',
+    },
+    {
+      symbol: 'vDOT',
+      isNativeToken: false,
+      assetId: '18446744073709551624',
+      originAssetId: 'vDOT',
+      logo: 'https://bifrost.subscan.io/static/img/vDOT.75c0b67b.svg',
+      isXcmCompatible: true,
+      originChain: Chain.BIFROST_POLKADOT,
+      minBridgeAmount: '0.1',
+    },
   ],
   [endpointKey.SHIDEN]: [
     {

src/v2/config/xcm/XcmRepositoryConfiguration.ts

@@ -7,6 +7,7 @@ import {
   InterlayXcmRepository,
   CrustShadowXcmRepository,
   PhalaXcmRepository,
+  BifrostXcmRepository,
 } from 'src/v2/repositories/implementations';
 import { Chain } from 'src/v2/models/XcmModels';
 import { TypeMapping } from 'src/v2/config/types';
@@ -27,6 +28,7 @@ export const XcmRepositoryConfiguration: TypeMapping = {
   [Chain.CRUST_SHADOW]: CrustShadowXcmRepository,
   [Chain.KHALA]: PhalaXcmRepository,
   [Chain.PHALA]: PhalaXcmRepository,
+  [Chain.BIFROST_POLKADOT]: BifrostXcmRepository,
 };
 
 export type AstarToken = 'ASTR' | 'SDN';

src/v2/models/XcmModels.ts

@@ -17,6 +17,7 @@ export enum Chain {
   CRUST_SHADOW = 'Crust-shadow',
   KHALA = 'Khala',
   PHALA = 'Phala',
+  BIFROST_POLKADOT = 'Bifrost-polkadot',
 }
 
 export enum parachainIds {
@@ -33,6 +34,7 @@ export enum parachainIds {
   CRUST_SHADOW = 2012,
   KHALA = 2004,
   PHALA = 2035,
+  BIFROST_POLKADOT = 2030,
 }
 
 export interface XcmChain {

src/v2/repositories/implementations/index.ts

@@ -13,3 +13,4 @@ export * from './xcm/PhalaXcmRepository';
 export * from './TokenApiRepository';
 export * from './EvmAssetsRepository';
 export * from './xcm/CrustShadowXcmRepository';
+export * from './xcm/BifrostXcmRepository';

src/v2/repositories/implementations/xcm/BifrostXcmRepository.ts

@@ -0,0 +1,104 @@
+import { BN } from '@polkadot/util';
+import { decodeAddress } from '@polkadot/util-crypto';
+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 { XcmChain } from 'src/v2/models/XcmModels';
+import { TokensAccounts } from 'src/v2/repositories/implementations/xcm/AcalaXcmRepository';
+import { Symbols } from 'src/v2/symbols';
+import { XcmRepository } from '../XcmRepository';
+
+const BNC = { Native: 'BNC' };
+const vDOT = { VToken2: 0 };
+const ASTR = { Token2: 3 };
+
+/**
+ * Used to transfer assets from Bifrost
+ */
+export class BifrostXcmRepository 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);
+    this.astarTokens = {
+      ASTR: 3,
+    };
+  }
+
+  public async getTransferCall(
+    from: XcmChain,
+    to: XcmChain,
+    recipientAddress: string,
+    token: Asset,
+    amount: BN
+  ): Promise<ExtrinsicPayload> {
+    if (!to.parachainId) {
+      throw `Parachain id for ${to.name} is not defined`;
+    }
+    let tokenData;
+    if (token.originAssetId == 'BNC') {
+      tokenData = BNC;
+    } else if (token.originAssetId == 'vDOT') {
+      tokenData = vDOT;
+    } else if (token.originAssetId == 'ASTR') {
+      tokenData = ASTR;
+    }
+    const destination = {
+      V1: {
+        parents: '1',
+        interior: {
+          X2: [
+            {
+              Parachain: to.parachainId,
+            },
+            {
+              AccountId32: {
+                network: {
+                  Any: null,
+                },
+                id: decodeAddress(recipientAddress),
+              },
+            },
+          ],
+        },
+      },
+    };
+    const destWeight = {
+      limited: new BN(10).pow(new BN(9)).muln(5),
+    };
+    return await this.buildTxCall(
+      from,
+      'xTokens',
+      'transfer',
+      tokenData,
+      amount,
+      destination,
+      destWeight
+    );
+  }
+
+  public async getTokenBalance(
+    address: string,
+    chain: XcmChain,
+    token: Asset,
+    isNativeToken: boolean
+  ): Promise<string> {
+    const api = await this.apiFactory.get(chain.endpoint);
+    try {
+      if (token.originAssetId == 'BNC') {
+        return (await this.getNativeBalance(address, chain)).toString();
+      } else if (token.originAssetId == 'vDOT') {
+        const bal = await api.query.tokens.accounts<TokensAccounts>(address, vDOT);
+        return bal.free.toString();
+      } else {
+        const bal = await api.query.tokens.accounts<TokensAccounts>(address, ASTR);
+        return bal.free.toString();
+      }
+    } catch (e) {
+      console.error(e);
+      return '0';
+    }
+  }
+}