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import { artifacts as erc20Artifacts } from '@0x/contracts-erc20';
import { artifacts as erc721Artifacts } from '@0x/contracts-erc721';
import { artifacts as exchangeArtifacts } from '@0x/contracts-exchange';
import { LogDecoder } from '@0x/contracts-test-utils';
import { DutchAuctionDetails, SignedOrder } from '@0x/types';
import { Web3Wrapper } from '@0x/web3-wrapper';
import { Provider, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
import * as _ from 'lodash';
import { DutchAuctionContract } from '../../generated-wrappers/dutch_auction';
import { artifacts } from '../../src/artifacts';
export class DutchAuctionTestWrapper {
private readonly _dutchAuctionContract: DutchAuctionContract;
private readonly _web3Wrapper: Web3Wrapper;
private readonly _logDecoder: LogDecoder;
constructor(contractInstance: DutchAuctionContract, provider: Provider) {
this._dutchAuctionContract = contractInstance;
this._web3Wrapper = new Web3Wrapper(provider);
this._logDecoder = new LogDecoder(this._web3Wrapper, {
...artifacts,
...erc20Artifacts,
...erc721Artifacts,
...exchangeArtifacts,
});
}
/**
* 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,
from: string,
): Promise<TransactionReceiptWithDecodedLogs> {
const txHash = await this._dutchAuctionContract.matchOrders.sendTransactionAsync(
buyOrder,
sellOrder,
buyOrder.signature,
sellOrder.signature,
{
from,
},
);
const tx = await this._logDecoder.getTxWithDecodedLogsAsync(txHash);
return tx;
}
/**
* 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> {
const auctionDetails = await this._dutchAuctionContract.getAuctionDetails.callAsync(sellOrder);
return auctionDetails;
}
}
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