import * as BigNumber from 'bignumber.js'; import {ZeroEx} from '../../src/0x.js'; import {Token, SignedOrder} from '../../src/types'; import {orderFactory} from '../utils/order_factory'; import {constants} from './constants'; export class FillScenarios { private zeroEx: ZeroEx; private userAddresses: string[]; private tokens: Token[]; private coinbase: string; private zrxTokenAddress: string; constructor(zeroEx: ZeroEx, userAddresses: string[], tokens: Token[], zrxTokenAddress: string) { this.zeroEx = zeroEx; this.userAddresses = userAddresses; this.tokens = tokens; this.coinbase = userAddresses[0]; this.zrxTokenAddress = zrxTokenAddress; } public async createFillableSignedOrderAsync(makerTokenAddress: string, takerTokenAddress: string, makerAddress: string, takerAddress: string, fillableAmount: BigNumber.BigNumber, expirationUnixTimestampSec?: BigNumber.BigNumber): Promise { return this.createAsymmetricFillableSignedOrderAsync( makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount, fillableAmount, expirationUnixTimestampSec, ); } public async createFillableSignedOrderWithFeesAsync( makerTokenAddress: string, takerTokenAddress: string, makerFee: BigNumber.BigNumber, takerFee: BigNumber.BigNumber, makerAddress: string, takerAddress: string, fillableAmount: BigNumber.BigNumber, feeRecepient: string, expirationUnixTimestampSec?: BigNumber.BigNumber, ): Promise { return this.createAsymmetricFillableSignedOrderWithFeesAsync( makerTokenAddress, takerTokenAddress, makerFee, takerFee, makerAddress, takerAddress, fillableAmount, fillableAmount, feeRecepient, expirationUnixTimestampSec, ); } public async createAsymmetricFillableSignedOrderAsync( makerTokenAddress: string, takerTokenAddress: string, makerAddress: string, takerAddress: string, makerFillableAmount: BigNumber.BigNumber, takerFillableAmount: BigNumber.BigNumber, expirationUnixTimestampSec?: BigNumber.BigNumber): Promise { const makerFee = new BigNumber(0); const takerFee = new BigNumber(0); const feeRecepient = constants.NULL_ADDRESS; return this.createAsymmetricFillableSignedOrderWithFeesAsync( makerTokenAddress, takerTokenAddress, makerFee, takerFee, makerAddress, takerAddress, makerFillableAmount, takerFillableAmount, feeRecepient, expirationUnixTimestampSec, ); } public async createPartiallyFilledSignedOrderAsync(makerTokenAddress: string, takerTokenAddress: string, takerAddress: string, fillableAmount: BigNumber.BigNumber, partialFillAmount: BigNumber.BigNumber) { const prevSenderAccount = await this.zeroEx.getTransactionSenderAccountIfExistsAsync(); const [makerAddress] = this.userAddresses; const signedOrder = await this.createAsymmetricFillableSignedOrderAsync( makerTokenAddress, takerTokenAddress, makerAddress, takerAddress, fillableAmount, fillableAmount, ); this.zeroEx.setTransactionSenderAccount(takerAddress); const shouldCheckTransfer = false; await this.zeroEx.exchange.fillOrderAsync(signedOrder, partialFillAmount, shouldCheckTransfer); // Re-set sender account so as to avoid introducing side-effects this.zeroEx.setTransactionSenderAccount(prevSenderAccount as string); return signedOrder; } private async createAsymmetricFillableSignedOrderWithFeesAsync( makerTokenAddress: string, takerTokenAddress: string, makerFee: BigNumber.BigNumber, takerFee: BigNumber.BigNumber, makerAddress: string, takerAddress: string, makerFillableAmount: BigNumber.BigNumber, takerFillableAmount: BigNumber.BigNumber, feeRecepient: string, expirationUnixTimestampSec?: BigNumber.BigNumber): Promise { await this.zeroEx.token.transferAsync(makerTokenAddress, this.coinbase, makerAddress, makerFillableAmount); await this.zeroEx.token.setProxyAllowanceAsync(makerTokenAddress, makerAddress, makerFillableAmount); await this.zeroEx.token.transferAsync(takerTokenAddress, this.coinbase, takerAddress, takerFillableAmount); await this.zeroEx.token.setProxyAllowanceAsync(takerTokenAddress, takerAddress, takerFillableAmount); if (!makerFee.isZero()) { await this.zeroEx.token.transferAsync(this.zrxTokenAddress, this.coinbase, makerAddress, makerFee); await this.zeroEx.token.setProxyAllowanceAsync(this.zrxTokenAddress, makerAddress, makerFee); } if (!takerFee.isZero()) { await this.zeroEx.token.transferAsync(this.zrxTokenAddress, this.coinbase, takerAddress, takerFee); await this.zeroEx.token.setProxyAllowanceAsync(this.zrxTokenAddress, takerAddress, takerFee); } const prevTransactionSenderAccount = await this.zeroEx.getTransactionSenderAccountIfExistsAsync(); this.zeroEx.setTransactionSenderAccount(makerAddress); const signedOrder = await orderFactory.createSignedOrderAsync(this.zeroEx, makerAddress, takerAddress, makerFee, takerFee, makerFillableAmount, makerTokenAddress, takerFillableAmount, takerTokenAddress, feeRecepient, expirationUnixTimestampSec); // We re-set the transactionSender to avoid introducing side-effects this.zeroEx.setTransactionSenderAccount(prevTransactionSenderAccount as string); return signedOrder; } }