import { SignedOrder, TransactionReceiptWithDecodedLogs, ZeroEx } from '0x.js'; import { BigNumber } from '@0xproject/utils'; import * as _ from 'lodash'; import * as Web3 from 'web3'; import { ExchangeContract } from '../contract_wrappers/generated/exchange'; import { constants } from './constants'; import { formatters } from './formatters'; import { LogDecoder } from './log_decoder'; import { signedOrderUtils } from './signed_order_utils'; export class ExchangeWrapper { private _exchange: ExchangeContract; private _logDecoder: LogDecoder = new LogDecoder(constants.TESTRPC_NETWORK_ID); private _zeroEx: ZeroEx; constructor(exchangeContract: ExchangeContract, zeroEx: ZeroEx) { this._exchange = exchangeContract; this._zeroEx = zeroEx; } public async fillOrderAsync( signedOrder: SignedOrder, from: string, opts: { takerTokenFillAmount?: BigNumber } = {}, ): Promise { const params = signedOrderUtils.createFill(signedOrder, opts.takerTokenFillAmount); const txHash = await this._exchange.fillOrder.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenFillAmount, params.v, params.r, params.s, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async cancelOrderAsync( signedOrder: SignedOrder, from: string, opts: { takerTokenCancelAmount?: BigNumber } = {}, ): Promise { const params = signedOrderUtils.createCancel(signedOrder, opts.takerTokenCancelAmount); const txHash = await this._exchange.cancelOrder.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenCancelAmount, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async fillOrKillOrderAsync( signedOrder: SignedOrder, from: string, opts: { takerTokenFillAmount?: BigNumber } = {}, ): Promise { const params = signedOrderUtils.createFill(signedOrder, opts.takerTokenFillAmount); const txHash = await this._exchange.fillOrKillOrder.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenFillAmount, params.v, params.r, params.s, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async batchFillOrdersAsync( orders: SignedOrder[], from: string, opts: { takerTokenFillAmounts?: BigNumber[] } = {}, ): Promise { const params = formatters.createBatchFill(orders, opts.takerTokenFillAmounts); const txHash = await this._exchange.batchFillOrders.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenFillAmounts, params.v, params.r, params.s, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async batchFillOrKillOrdersAsync( orders: SignedOrder[], from: string, opts: { takerTokenFillAmounts?: BigNumber[] } = {}, ): Promise { const params = formatters.createBatchFill(orders, opts.takerTokenFillAmounts); const txHash = await this._exchange.batchFillOrKillOrders.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenFillAmounts, params.v, params.r, params.s, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async marketFillOrdersAsync( orders: SignedOrder[], from: string, opts: { takerTokenFillAmount: BigNumber }, ): Promise { const params = formatters.createMarketFillOrders(orders, opts.takerTokenFillAmount); const txHash = await this._exchange.marketFillOrders.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenFillAmount, params.v, params.r, params.s, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async batchCancelOrdersAsync( orders: SignedOrder[], from: string, opts: { takerTokenCancelAmounts?: BigNumber[] } = {}, ): Promise { const params = formatters.createBatchCancel(orders, opts.takerTokenCancelAmounts); const txHash = await this._exchange.batchCancelOrders.sendTransactionAsync( params.orderAddresses, params.orderValues, params.takerTokenCancelAmounts, { from }, ); const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash); tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address); tx.logs = _.map(tx.logs, log => { const logWithDecodedArgs = this._logDecoder.decodeLogOrThrow(log); wrapLogBigNumbers(logWithDecodedArgs); return logWithDecodedArgs; }); return tx; } public async getOrderHashAsync(signedOrder: SignedOrder): Promise { const params = signedOrderUtils.getOrderAddressesAndValues(signedOrder); const orderHash = await this._exchange.getOrderHash.callAsync(params.orderAddresses, params.orderValues); return orderHash; } public async isValidSignatureAsync(signedOrder: SignedOrder): Promise { const isValidSignature = await this._exchange.isValidSignature.callAsync( signedOrder.maker, ZeroEx.getOrderHashHex(signedOrder), signedOrder.ecSignature.v, signedOrder.ecSignature.r, signedOrder.ecSignature.s, ); return isValidSignature; } public async isRoundingErrorAsync( numerator: BigNumber, denominator: BigNumber, target: BigNumber, ): Promise { const isRoundingError = await this._exchange.isRoundingError.callAsync(numerator, denominator, target); return isRoundingError; } public async getPartialAmountAsync( numerator: BigNumber, denominator: BigNumber, target: BigNumber, ): Promise { const partialAmount = new BigNumber( await this._exchange.getPartialAmount.callAsync(numerator, denominator, target), ); return partialAmount; } } function wrapLogBigNumbers(log: any): any { const argNames = _.keys(log.args); for (const argName of argNames) { const isWeb3BigNumber = _.startsWith(log.args[argName].constructor.toString(), 'function BigNumber('); if (isWeb3BigNumber) { log.args[argName] = new BigNumber(log.args[argName]); } } }