add logic to get tokens balances for chain and address, change getBal…

…ance and getDecimals to work without signer

packages/builder/fixtures/builderParamsMock.ts

@@ -37,6 +37,11 @@ export const moonbaseAlphaMock = new EvmParachain({
   isTestChain: true,
   key: 'moonbase-alpha',
   name: 'Moonbase Alpha',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'MOCK',
+    symbol: 'MOCK',
+  },
   parachainId: 1000,
   rpc: 'https://rpc.api.moonbase.moonbeam.network',
   ss58Format: 1287,

packages/config/package.json

@@ -51,7 +51,8 @@
   "main": "./build/index.cjs",
   "dependencies": {
     "@moonbeam-network/xcm-builder": "2.0.1",
-    "@moonbeam-network/xcm-types": "2.0.1"
+    "@moonbeam-network/xcm-types": "2.0.1",
+    "viem": "^2.8.6"
   },
   "peerDependencies": {
     "@polkadot/types": "^10.10.1",

packages/config/src/ConfigService/ConfigService.test.ts

@@ -100,6 +100,11 @@ describe('config service', () => {
             isTestChain: true,
             key: 'test',
             name: 'test',
+            nativeCurrency: {
+              decimals: 18,
+              name: 'TEST',
+              symbol: 'TEST',
+            },
             parachainId: 1000,
             rpc: '',
             ss58Format: 1287,

packages/config/src/chains.ts

@@ -329,6 +329,11 @@ export const darwinia = new EvmParachain({
   id: 46,
   key: 'darwinia',
   name: 'Darwinia',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'RING',
+    symbol: 'RING',
+  },
   parachainId: 2046,
   rpc: 'https://rpc.darwinia.network',
   ss58Format: 18,
@@ -355,12 +360,18 @@ export const darwiniaCrab = new EvmParachain({
   id: 44,
   key: 'darwinia-crab',
   name: 'Darwinia Crab',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'CRAB',
+    symbol: 'CRAB',
+  },
   parachainId: 2105,
   rpc: 'https://crab-rpc.darwinia.network',
   ss58Format: 18,
   ws: 'wss://crab-parachain-rpc.darwinia.network',
 });
 
+// FIXME: do we need this chain? it looks dead to me -  https://pangoro.subscan.io/
 export const darwiniaPangoro = new EvmParachain({
   assetsData: [
     {
@@ -382,6 +393,11 @@ export const darwiniaPangoro = new EvmParachain({
   isTestChain: true,
   key: 'darwinia-pangoro',
   name: 'Pangoro',
+  nativeCurrency: {
+    decimals: 18,
+    name: '???',
+    symbol: '???',
+  },
   parachainId: 2105,
   rpc: 'https://pangoro-rpc.darwinia.network',
   ss58Format: 18,
@@ -729,6 +745,11 @@ export const moonbaseAlpha = new EvmParachain({
   isTestChain: true,
   key: 'moonbase-alpha',
   name: 'Moonbase Alpha',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'DEV',
+    symbol: 'DEV',
+  },
   parachainId: 1000,
   rpc: 'https://rpc.api.moonbase.moonbeam.network',
   ss58Format: 1287,
@@ -759,6 +780,11 @@ export const moonbaseBeta = new EvmParachain({
   isTestChain: true,
   key: 'moonbase-beta',
   name: 'Moonbase Beta',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'DEV',
+    symbol: 'DEV',
+  },
   parachainId: 888,
   rpc: 'https://frag-moonbase-beta-rpc.g.moonbase.moonbeam.network',
   ss58Format: 1287,
@@ -931,6 +957,11 @@ export const moonbeam = new EvmParachain({
   id: 1284,
   key: 'moonbeam',
   name: 'Moonbeam',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'Glimmer',
+    symbol: 'GLMR',
+  },
   parachainId: 2004,
   rpc: 'https://rpc.api.moonbeam.network',
   ss58Format: 1284,
@@ -1046,6 +1077,11 @@ export const moonriver = new EvmParachain({
   id: 1285,
   key: 'moonriver',
   name: 'Moonriver',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'MOVR',
+    symbol: 'MOVR',
+  },
   parachainId: 2023,
   rpc: 'https://rpc.api.moonriver.moonbeam.network',
   ss58Format: 1285,

packages/sdk/src/contract/contract.factory.ts

@@ -1,10 +1,12 @@
 import { ContractConfig } from '@moonbeam-network/xcm-builder';
+import { EvmParachain } from '@moonbeam-network/xcm-types';
 import { EvmSigner } from '../sdk.interfaces';
 import {
   BalanceContractInterface,
   TransferContractInterface,
 } from './contract.interfaces';
 import { Erc20, Xtokens } from './contracts';
+import { Erc20Public } from './contracts/Erc20/Erc20Public';
 
 export function createContract(
   config: ContractConfig,
@@ -20,3 +22,14 @@ export function createContract(
 
   throw new Error(`Contract ${config.module} not found`);
 }
+
+export function createContractWithoutSigner(
+  config: ContractConfig,
+  chain: EvmParachain,
+): TransferContractInterface | BalanceContractInterface {
+  if (config.module === 'Erc20') {
+    return new Erc20Public(config, chain.getViemChain());
+  }
+
+  throw new Error(`Public Contract ${config.module} not found`);
+}

packages/sdk/src/contract/contracts/Erc20/Erc20Public.ts

@@ -0,0 +1,46 @@
+import { ContractConfig } from '@moonbeam-network/xcm-builder';
+import { Chain, PublicClient, createPublicClient, http } from 'viem';
+import { BalanceContractInterface } from '../../contract.interfaces';
+import abi from './Erc20ABI.json';
+
+export class Erc20Public implements BalanceContractInterface {
+  readonly address: string;
+
+  readonly #config: ContractConfig;
+
+  readonly #publicClient: PublicClient;
+
+  constructor(config: ContractConfig, chain: Chain) {
+    if (!config.address) {
+      throw new Error('Contract address is required');
+    }
+    this.address = config.address;
+
+    this.#config = config;
+
+    this.#publicClient = createPublicClient({
+      chain,
+      transport: http(),
+    });
+  }
+
+  async getBalance(): Promise<bigint> {
+    const data = await this.#publicClient.readContract({
+      abi,
+      address: this.#config.address as `0x${string}`,
+      functionName: 'balanceOf',
+    });
+
+    return data as unknown as bigint;
+  }
+
+  async getDecimals(): Promise<number> {
+    const data = await this.#publicClient.readContract({
+      abi,
+      address: this.#config.address as `0x${string}`,
+      functionName: 'decimals',
+    });
+
+    return data as unknown as number;
+  }
+}

packages/sdk/src/getTransferData/getSourceData.ts

@@ -340,7 +340,6 @@ export async function getAssetsBalances({
   address,
   chain,
   assets,
-  evmSigner,
   polkadot,
 }: GetAssetsBalancesParams) {
   const result = [];
@@ -358,40 +357,25 @@ export async function getAssetsBalances({
 
   // eslint-disable-next-line no-restricted-syntax
   for (const asset of uniqueAssets) {
-    try {
-      console.log(asset);
-
-      // eslint-disable-next-line no-await-in-loop
-      const decimals = await getDecimals({
-        address,
-        asset: asset.asset,
-        chain,
-        config: asset,
-        evmSigner,
-        polkadot,
-      });
+    // eslint-disable-next-line no-await-in-loop
+    const decimals = await getDecimals({
+      address,
+      asset: asset.asset,
+      chain,
+      config: asset,
+      polkadot,
+    });
 
-      // eslint-disable-next-line no-await-in-loop
-      const balance = await getBalance({
-        address,
-        chain,
-        config: asset,
-        decimals,
-        evmSigner,
-        polkadot,
-      });
+    // eslint-disable-next-line no-await-in-loop
+    const balance = await getBalance({
+      address,
+      chain,
+      config: asset,
+      decimals,
+      polkadot,
+    });
 
-      result.push({ balance, asset: asset.asset });
-    } catch (error) {
-      console.log(
-        '\x1b[34m████████████████████▓▓▒▒░ getSourceData.ts:406 ░▒▒▓▓████████████████████\x1b[0m',
-      );
-      console.log('* error = ');
-      console.log(error);
-      console.log(
-        '\x1b[34m▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄\x1b[0m',
-      );
-    }
+    result.push({ asset: asset.asset, balance, decimals });
   }
   return result;
 }

packages/sdk/src/getTransferData/getTransferData.utils.ts

@@ -1,8 +1,11 @@
 import { CallType, SubstrateQueryConfig } from '@moonbeam-network/xcm-builder';
 import { AssetConfig } from '@moonbeam-network/xcm-config';
-import { AnyChain, Asset } from '@moonbeam-network/xcm-types';
+import { AnyChain, Asset, EvmParachain } from '@moonbeam-network/xcm-types';
 import { convertDecimals, toBigInt } from '@moonbeam-network/xcm-utils';
-import { BalanceContractInterface, createContract } from '../contract';
+import {
+  BalanceContractInterface,
+  createContractWithoutSigner,
+} from '../contract';
 import { PolkadotService } from '../polkadot';
 import { EvmSigner } from '../sdk.interfaces';
 
@@ -23,7 +26,6 @@ export async function getBalance({
   chain,
   config,
   decimals,
-  evmSigner,
   polkadot,
 }: GetBalancesParams) {
   const cfg = config.balance.build({
@@ -38,13 +40,10 @@ export async function getBalance({
       : balance;
   }
 
-  if (!evmSigner) {
-    throw new Error(
-      `getBalance: Evm signer must be provided. Asset: ${config.asset.key}`,
-    );
-  }
-
-  const contract = createContract(cfg, evmSigner) as BalanceContractInterface;
+  const contract = createContractWithoutSigner(
+    cfg,
+    chain as EvmParachain,
+  ) as BalanceContractInterface;
 
   return contract.getBalance();
 }
@@ -53,8 +52,8 @@ export async function getDecimals({
   address,
   asset,
   config,
-  evmSigner,
   polkadot,
+  chain,
 }: GetDecimalsParams) {
   const cfg = config.balance.build({
     address,
@@ -65,13 +64,10 @@ export async function getDecimals({
     return polkadot.getAssetDecimals(asset || config.asset);
   }
 
-  if (!evmSigner) {
-    throw new Error(
-      `getDecimals: Evm signer must be provided. Asset: ${asset?.key}`,
-    );
-  }
-
-  const contract = createContract(cfg, evmSigner) as BalanceContractInterface;
+  const contract = createContractWithoutSigner(
+    cfg,
+    chain as EvmParachain,
+  ) as BalanceContractInterface;
 
   return contract.getDecimals();
 }

packages/sdk/src/sdk.ts

@@ -8,7 +8,7 @@ import { AnyChain, Asset, Ecosystem } from '@moonbeam-network/xcm-types';
 import { getAssetsBalances } from './getTransferData/getSourceData';
 import { getTransferData as gtd } from './getTransferData/getTransferData';
 import { PolkadotService } from './polkadot';
-import { EvmSigner, Signers, TransferData } from './sdk.interfaces';
+import { Signers, TransferData } from './sdk.interfaces';
 
 export interface SdkOptions extends Partial<Signers> {
   configService?: IConfigService;
@@ -88,7 +88,6 @@ export function Sdk(options?: SdkOptions) {
 export async function getParachainBalances(
   chain: AnyChain,
   address: string,
-  evmSigner?: EvmSigner,
 ): Promise<any> {
   const configService = new ConfigService();
   const chainsConfig = configService.getChainConfig(chain);
@@ -100,7 +99,6 @@ export async function getParachainBalances(
     chain,
     assets,
     address,
-    evmSigner,
     polkadot,
   });