43 lines
1.6 KiB
TypeScript
43 lines
1.6 KiB
TypeScript
import { BigNumber } from '@0xproject/utils';
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import ABI = require('ethereumjs-abi');
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import ethUtil = require('ethereumjs-util');
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import * as _ from 'lodash';
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import * as Web3 from 'web3';
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import { MultiSigWalletContract } from '../src/contract_wrappers/generated/multi_sig_wallet';
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import { TransactionDataParams } from './types';
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export class MultiSigWrapper {
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private _multiSig: MultiSigWalletContract;
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public static encodeFnArgs(name: string, abi: Web3.AbiDefinition[], args: any[]) {
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const abiEntity = _.find(abi, { name }) as Web3.MethodAbi;
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if (_.isUndefined(abiEntity)) {
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throw new Error(`Did not find abi entry for name: ${name}`);
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}
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const types = _.map(abiEntity.inputs, input => input.type);
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const funcSig = ethUtil.bufferToHex(ABI.methodID(name, types));
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const argsData = _.map(args, arg => {
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const target = _.isBoolean(arg) ? +arg : arg;
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const targetBuff = ethUtil.toBuffer(target);
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return ethUtil.setLengthLeft(targetBuff, 32).toString('hex');
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});
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return funcSig + argsData.join('');
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}
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constructor(multiSigContract: MultiSigWalletContract) {
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this._multiSig = multiSigContract;
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}
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public async submitTransactionAsync(
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destination: string,
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from: string,
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dataParams: TransactionDataParams,
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value: BigNumber = new BigNumber(0),
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) {
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const { name, abi, args = [] } = dataParams;
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const encoded = MultiSigWrapper.encodeFnArgs(name, abi, args);
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return this._multiSig.submitTransaction.sendTransactionAsync(destination, value, encoded, {
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from,
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});
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}
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}
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