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import { assetProxyUtils, orderFactory } from '@0xproject/order-utils';
import { AssetProxyId, ERC721AssetData, OrderWithoutExchangeAddress, SignedOrder } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import { artifacts } from './artifacts';
import { constants } from './constants';
import { DummyERC20TokenContract } from './generated_contract_wrappers/dummy_erc20_token';
import { DummyERC721TokenContract } from './generated_contract_wrappers/dummy_erc721_token';
import { ExchangeContract } from './generated_contract_wrappers/exchange';
export class FillScenarios {
private _web3Wrapper: Web3Wrapper;
private _userAddresses: string[];
private _coinbase: string;
private _zrxTokenAddress: string;
private _exchangeAddress: string;
private _erc20ProxyAddress: string;
private _erc721ProxyAddress: string;
constructor(
provider: Provider,
userAddresses: string[],
zrxTokenAddress: string,
exchangeAddress: string,
erc20ProxyAddress: string,
erc721ProxyAddress: string,
) {
this._web3Wrapper = new Web3Wrapper(provider);
this._userAddresses = userAddresses;
this._coinbase = userAddresses[0];
this._zrxTokenAddress = zrxTokenAddress;
this._exchangeAddress = exchangeAddress;
this._erc20ProxyAddress = erc20ProxyAddress;
this._erc721ProxyAddress = erc721ProxyAddress;
}
public async createFillableSignedOrderAsync(
makerAssetData: string,
takerAssetData: string,
makerAddress: string,
takerAddress: string,
fillableAmount: BigNumber,
expirationTimeSeconds?: BigNumber,
): Promise<SignedOrder> {
return this.createAsymmetricFillableSignedOrderAsync(
makerAssetData,
takerAssetData,
makerAddress,
takerAddress,
fillableAmount,
fillableAmount,
expirationTimeSeconds,
);
}
public async createFillableSignedOrderWithFeesAsync(
makerAssetData: string,
takerAssetData: string,
makerFee: BigNumber,
takerFee: BigNumber,
makerAddress: string,
takerAddress: string,
fillableAmount: BigNumber,
feeRecepientAddress: string,
expirationTimeSeconds?: BigNumber,
): Promise<SignedOrder> {
return this._createAsymmetricFillableSignedOrderWithFeesAsync(
makerAssetData,
takerAssetData,
makerFee,
takerFee,
makerAddress,
takerAddress,
fillableAmount,
fillableAmount,
feeRecepientAddress,
expirationTimeSeconds,
);
}
public async createAsymmetricFillableSignedOrderAsync(
makerAssetData: string,
takerAssetData: string,
makerAddress: string,
takerAddress: string,
makerFillableAmount: BigNumber,
takerFillableAmount: BigNumber,
expirationTimeSeconds?: BigNumber,
): Promise<SignedOrder> {
const makerFee = new BigNumber(0);
const takerFee = new BigNumber(0);
const feeRecepientAddress = constants.NULL_ADDRESS;
return this._createAsymmetricFillableSignedOrderWithFeesAsync(
makerAssetData,
takerAssetData,
makerFee,
takerFee,
makerAddress,
takerAddress,
makerFillableAmount,
takerFillableAmount,
feeRecepientAddress,
expirationTimeSeconds,
);
}
public async createPartiallyFilledSignedOrderAsync(
makerAssetData: string,
takerAssetData: string,
takerAddress: string,
fillableAmount: BigNumber,
partialFillAmount: BigNumber,
): Promise<SignedOrder> {
const [makerAddress] = this._userAddresses;
const signedOrder = await this.createAsymmetricFillableSignedOrderAsync(
makerAssetData,
takerAssetData,
makerAddress,
takerAddress,
fillableAmount,
fillableAmount,
);
const exchangeInstance = new ExchangeContract(
artifacts.Exchange.compilerOutput.abi,
signedOrder.exchangeAddress,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
const orderWithoutExchangeAddress = _.omit(signedOrder, [
'signature',
'exchangeAddress',
]) as OrderWithoutExchangeAddress;
await exchangeInstance.fillOrder.sendTransactionAsync(
orderWithoutExchangeAddress,
partialFillAmount,
signedOrder.signature,
{ from: takerAddress },
);
return signedOrder;
}
private async _createAsymmetricFillableSignedOrderWithFeesAsync(
makerAssetData: string,
takerAssetData: string,
makerFee: BigNumber,
takerFee: BigNumber,
makerAddress: string,
takerAddress: string,
makerFillableAmount: BigNumber,
takerFillableAmount: BigNumber,
feeRecepientAddress: string,
expirationTimeSeconds?: BigNumber,
): Promise<SignedOrder> {
const decodedMakerAssetData = assetProxyUtils.decodeAssetDataOrThrow(makerAssetData);
if (decodedMakerAssetData.assetProxyId === AssetProxyId.ERC20) {
await this._increaseERC20BalanceAndAllowanceAsync(
decodedMakerAssetData.tokenAddress,
makerAddress,
makerFillableAmount,
);
} else {
if (!makerFillableAmount.equals(1)) {
throw new Error(`ERC721 makerFillableAmount should be equal 1. Found: ${makerFillableAmount}`);
}
await this._increaseERC721BalanceAndAllowanceAsync(
decodedMakerAssetData.tokenAddress,
makerAddress,
(decodedMakerAssetData as ERC721AssetData).tokenId,
);
}
const decodedTakerAssetData = assetProxyUtils.decodeAssetDataOrThrow(takerAssetData);
if (decodedTakerAssetData.assetProxyId === AssetProxyId.ERC20) {
const takerTokenAddress = decodedTakerAssetData.tokenAddress;
await this._increaseERC20BalanceAndAllowanceAsync(takerTokenAddress, takerAddress, takerFillableAmount);
} else {
if (!takerFillableAmount.equals(1)) {
throw new Error(`ERC721 takerFillableAmount should be equal 1. Found: ${takerFillableAmount}`);
}
await this._increaseERC721BalanceAndAllowanceAsync(
decodedTakerAssetData.tokenAddress,
takerAddress,
(decodedMakerAssetData as ERC721AssetData).tokenId,
);
}
// Fees
await Promise.all([
this._increaseERC20BalanceAndAllowanceAsync(this._zrxTokenAddress, makerAddress, makerFee),
this._increaseERC20BalanceAndAllowanceAsync(this._zrxTokenAddress, takerAddress, takerFee),
]);
const senderAddress = constants.NULL_ADDRESS;
const signedOrder = await orderFactory.createSignedOrderAsync(
this._web3Wrapper.getProvider(),
makerAddress,
takerAddress,
senderAddress,
makerFee,
takerFee,
makerFillableAmount,
makerAssetData,
takerFillableAmount,
takerAssetData,
this._exchangeAddress,
feeRecepientAddress,
expirationTimeSeconds,
);
return signedOrder;
}
private async _increaseERC721BalanceAndAllowanceAsync(
tokenAddress: string,
address: string,
tokenId: BigNumber,
): Promise<void> {
await this._increaseERC721BalanceAsync(tokenAddress, address, tokenId);
await this._increaseERC721AllowanceAsync(tokenAddress, address);
}
private async _increaseERC721AllowanceAsync(tokenAddress: string, address: string): Promise<void> {
const erc721Token = new DummyERC721TokenContract(
artifacts.DummyERC721Token.compilerOutput.abi,
tokenAddress,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
const isApproved = true;
const txHash = await erc721Token.setApprovalForAll.sendTransactionAsync(this._erc721ProxyAddress, isApproved, {
from: address,
});
await this._web3Wrapper.awaitTransactionSuccessAsync(txHash);
}
private async _increaseERC721BalanceAsync(
tokenAddress: string,
address: string,
tokenId: BigNumber,
): Promise<void> {
const erc721Token = new DummyERC721TokenContract(
artifacts.DummyERC721Token.compilerOutput.abi,
tokenAddress,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
const txHash = await erc721Token.mint.sendTransactionAsync(address, tokenId, { from: this._coinbase });
await this._web3Wrapper.awaitTransactionSuccessAsync(txHash);
}
private async _increaseERC20BalanceAndAllowanceAsync(
tokenAddress: string,
address: string,
amount: BigNumber,
): Promise<void> {
if (amount.isZero() || address === constants.NULL_ADDRESS) {
return; // noop
}
await Promise.all([
this._increaseERC20BalanceAsync(tokenAddress, address, amount),
this._increaseERC20AllowanceAsync(tokenAddress, address, amount),
]);
}
private async _increaseERC20BalanceAsync(tokenAddress: string, address: string, amount: BigNumber): Promise<void> {
const erc20Token = new DummyERC20TokenContract(
artifacts.DummyERC20Token.compilerOutput.abi,
tokenAddress,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
await erc20Token.transfer.sendTransactionAsync(address, amount, {
from: this._coinbase,
});
}
private async _increaseERC20AllowanceAsync(
tokenAddress: string,
address: string,
amount: BigNumber,
): Promise<void> {
const erc20Token = new DummyERC20TokenContract(
artifacts.DummyERC20Token.compilerOutput.abi,
tokenAddress,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
const oldMakerAllowance = await erc20Token.allowance.callAsync(address, this._erc20ProxyAddress);
const newMakerAllowance = oldMakerAllowance.plus(amount);
await erc20Token.approve.sendTransactionAsync(this._erc20ProxyAddress, newMakerAllowance, {
from: address,
});
}
}
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