import { artifacts as protocolArtifacts } from '@0x/contracts-protocol';
import { DutchAuctionContract } from '@0x/abi-gen-wrappers';
import { DutchAuction } from '@0x/contract-artifacts';
import { LogDecoder } from '@0x/contracts-test-utils';
import { artifacts as tokensArtifacts } from '@0x/contracts-tokens';
import { _getDefaultContractAddresses } from '../utils/contract_addresses';
import { DutchAuctionDetails, SignedOrder } from '@0x/types';
import { ContractAbi } from 'ethereum-types';
import { Web3Wrapper } from '@0x/web3-wrapper';
import { BigNumber } from '@0x/utils';
import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
import * as _ from 'lodash';
import ethAbi = require('ethereumjs-abi');
import { schemas } from '@0x/json-schemas';
import { assert } from '../utils/assert';
import ethUtil = require('ethereumjs-util');
import { orderTxOptsSchema } from '../schemas/order_tx_opts_schema';
import { txOptsSchema } from '../schemas/tx_opts_schema';
import { OrderTransactionOpts } from '../types';
import { ContractWrapper } from './contract_wrapper';
import { ExchangeWrapperError } from '../types';
import { orderFactory } from '@0x/order-utils/lib/src/order_factory';
import { constants } from 'zlib';
export class DutchAuctionWrapper extends ContractWrapper {
public abi: ContractAbi = DutchAuction.compilerOutput.abi;
public address: string;
private _exchangeAddress: string;
private _dutchAuctionContractIfExists?: DutchAuctionContract;
/**
* Instantiate DutchAuctionWrapper
* @param web3Wrapper Web3Wrapper instance to use.
* @param networkId Desired networkId.
* @param address The address of the Dutch Auction contract. If undefined, will
* default to the known address corresponding to the networkId.
*/
constructor(
web3Wrapper: Web3Wrapper,
networkId: number,
address?: string,
exchangeAddress?: string,
) {
super(web3Wrapper, networkId);
this.address = this.address = _.isUndefined(address) ? _getDefaultContractAddresses(networkId).dutchAuction : address;
this._exchangeAddress = _.isUndefined(exchangeAddress) ? _getDefaultContractAddresses(networkId).exchange : exchangeAddress;
}
/**
* Matches the buy and sell orders at an amount given the following: the current block time, the auction
* start time and the auction begin amount. The sell order is a an order at the lowest amount
* at the end of the auction. Excess from the match is transferred to the seller.
* Over time the price moves from beginAmount to endAmount given the current block.timestamp.
* @param buyOrder The Buyer's order. This order is for the current expected price of the auction.
* @param sellOrder The Seller's order. This order is for the lowest amount (at the end of the auction).
* @param from Address the transaction is being sent from.
* @return Transaction receipt with decoded logs.
*/
public async matchOrdersAsync(
buyOrder: SignedOrder,
sellOrder: SignedOrder,
takerAddress: string,
orderTransactionOpts: OrderTransactionOpts = { shouldValidate: true },
): Promise<string> {
// type assertions
assert.doesConformToSchema('buyOrder', buyOrder, schemas.signedOrderSchema);
assert.doesConformToSchema('sellOrder', sellOrder, schemas.signedOrderSchema);
await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
assert.doesConformToSchema('orderTransactionOpts', orderTransactionOpts, orderTxOptsSchema, [txOptsSchema]);
const normalizedTakerAddress = takerAddress.toLowerCase();
// other assertions
if (
sellOrder.makerAssetData !== buyOrder.takerAssetData ||
sellOrder.takerAssetData !== buyOrder.makerAssetData
) {
throw new Error(ExchangeWrapperError.AssetDataMismatch);
}
// get contract
const dutchAuctionInstance = await this._getDutchAuctionContractAsync();
// validate transaction
if (orderTransactionOpts.shouldValidate) {
await dutchAuctionInstance.matchOrders.callAsync(
buyOrder,
sellOrder,
buyOrder.signature,
sellOrder.signature,
{
from: normalizedTakerAddress,
gas: orderTransactionOpts.gasLimit,
gasPrice: orderTransactionOpts.gasPrice,
nonce: orderTransactionOpts.nonce,
},
);
}
// send transaction
const txHash = await dutchAuctionInstance.matchOrders.sendTransactionAsync(
buyOrder,
sellOrder,
buyOrder.signature,
sellOrder.signature,
{
from: normalizedTakerAddress,
gas: orderTransactionOpts.gasLimit,
gasPrice: orderTransactionOpts.gasPrice,
nonce: orderTransactionOpts.nonce,
},
);
return txHash;
}
/**
* Calculates the Auction Details for the given order
* @param sellOrder The Seller's order. This order is for the lowest amount (at the end of the auction).
* @return The dutch auction details.
*/
public async getAuctionDetailsAsync(sellOrder: SignedOrder): Promise<DutchAuctionDetails> {
// type assertions
assert.doesConformToSchema('sellOrder', sellOrder, schemas.signedOrderSchema);
// get contract
console.log(sellOrder);
console.log(await this._getDutchAuctionContractAsync());
const dutchAuctionInstance = await this._getDutchAuctionContractAsync();
// call contract
const afterAuctionDetails = await dutchAuctionInstance.getAuctionDetails.callAsync(sellOrder);
return afterAuctionDetails;
}
private async _getDutchAuctionContractAsync(): Promise<DutchAuctionContract> {
if (!_.isUndefined(this._dutchAuctionContractIfExists)) {
return this._dutchAuctionContractIfExists;
}
const contractInstance = new DutchAuctionContract(
this.abi,
this.address,
this._web3Wrapper.getProvider(),
this._web3Wrapper.getContractDefaults(),
);
this._dutchAuctionContractIfExists = contractInstance;
return this._dutchAuctionContractIfExists;
}
public async createSignedSellOrderAsync(
auctionBeginTimeSections: BigNumber,
auctionBeginAmount: BigNumber,
auctionEndAmount: BigNumber,
acutionEndTime: BigNumber,
makerAssetData: string,
takerAssetData: string,
makerAddress: string,
takerAddress: string,
takerFillableAmount: BigNumber,
senderAddress?: string,
makerFee?: BigNumber,
takerFee?: BigNumber,
feeRecipientAddress?: string,
): Promise<SignedOrder> {
console.log(`asdasd`);
const makerAssetAmount = auctionEndAmount;
const makerAssetDataWithAuctionDetails = DutchAuctionWrapper.encodeDutchAuctionAssetData(makerAssetData, auctionBeginTimeSections, auctionBeginAmount);
const signedOrder = await orderFactory.createSignedOrderAsync(
this._web3Wrapper.getProvider(),
makerAddress,
makerAssetAmount,
makerAssetDataWithAuctionDetails,
takerFillableAmount,
takerAssetData,
this._exchangeAddress,
{
takerAddress,
senderAddress,
makerFee,
takerFee,
feeRecipientAddress,
expirationTimeSeconds: acutionEndTime,
},
);
//console.log(signedOrder);
return signedOrder;
}
public async createSignedBuyOrderAsync(sellOrder: SignedOrder, buyerAddress: string, senderAddress?: string, makerFee?: BigNumber, takerFee?: BigNumber, feeRecipientAddress?: string): Promise<SignedOrder> {
const signedOrder = await orderFactory.createSignedOrderAsync(
this._web3Wrapper.getProvider(),
buyerAddress,
sellOrder.takerAssetAmount.times(2), // change this to decode value from auction @TODO -- add decode above for this.
sellOrder.takerAssetData,
sellOrder.makerAssetAmount,
sellOrder.makerAssetData,
sellOrder.exchangeAddress,
{
senderAddress,
makerFee,
takerFee,
feeRecipientAddress,
expirationTimeSeconds: sellOrder.expirationTimeSeconds,
},
);
// console.log(signedOrder);
return signedOrder;
}
/**
* Dutch auction details are encoded with the asset data for a 0x order. This function produces a hex
* encoded assetData string, containing information both about the asset being traded and the
* dutch auction; which is usable in the makerAssetData or takerAssetData fields in a 0x order.
* @param assetData Hex encoded assetData string for the asset being auctioned.
* @param beginTimeSeconds Begin time of the dutch auction.
* @param beginAmount Starting amount being sold in the dutch auction.
* @return The hex encoded assetData string.
*/
public static encodeDutchAuctionAssetData(assetData: string, beginTimeSeconds: BigNumber, beginAmount: BigNumber): string {
// console.log(`yoooo`, assetData);
const assetDataBuffer = ethUtil.toBuffer(assetData);
const abiEncodedAuctionData = (ethAbi as any).rawEncode(
['uint256', 'uint256'],
[beginTimeSeconds.toString(), beginAmount.toString()],
);
const abiEncodedAuctionDataBuffer = ethUtil.toBuffer(abiEncodedAuctionData);
const dutchAuctionDataBuffer = Buffer.concat([assetDataBuffer, abiEncodedAuctionDataBuffer]);
// console.log(`GREFG --- `, abiEncodedAuctionData);
const dutchAuctionData = ethUtil.bufferToHex(dutchAuctionDataBuffer);
return dutchAuctionData;
};
}
