29 lines
1.1 KiB
TypeScript
29 lines
1.1 KiB
TypeScript
import { BigNumber } from '@0xproject/utils';
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import * as _ from 'lodash';
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import * as Web3 from 'web3';
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import { BalancesByOwner } from './types';
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export class Balances {
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private _tokenContractInstances: Web3.ContractInstance[];
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private _ownerAddresses: string[];
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constructor(tokenContractInstances: Web3.ContractInstance[], ownerAddresses: string[]) {
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this._tokenContractInstances = tokenContractInstances;
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this._ownerAddresses = ownerAddresses;
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}
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public async getAsync(): Promise<BalancesByOwner> {
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const balancesByOwner: BalancesByOwner = {};
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for (const tokenContractInstance of this._tokenContractInstances) {
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for (const ownerAddress of this._ownerAddresses) {
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let balance = await tokenContractInstance.balanceOf(ownerAddress);
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balance = new BigNumber(balance);
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if (_.isUndefined(balancesByOwner[ownerAddress])) {
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balancesByOwner[ownerAddress] = {};
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}
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balancesByOwner[ownerAddress][tokenContractInstance.address] = balance;
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}
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}
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return balancesByOwner;
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}
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}
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