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import { BigNumber } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import ethUtil = require('ethereumjs-util');
import * as _ from 'lodash';
import { crypto } from './crypto';
import { SignedOrder } from './signed_order';
import { OrderParams } from './types';
export class Order {
public params: OrderParams;
private _web3Wrapper: Web3Wrapper;
constructor(web3Wrapper: Web3Wrapper, params: OrderParams) {
this.params = params;
this._web3Wrapper = web3Wrapper;
}
public async signAsync(): Promise<SignedOrder> {
const orderHash = this.getOrderHashHex();
const signature = await this._web3Wrapper.signTransactionAsync(this.params.maker, orderHash);
const { v, r, s } = ethUtil.fromRpcSig(signature);
const signedOrderParams = _.assign(this.params, {
v,
r: ethUtil.bufferToHex(r),
s: ethUtil.bufferToHex(s),
});
const signedOrder = new SignedOrder(this._web3Wrapper, signedOrderParams);
return signedOrder;
}
public getOrderHashHex(): string {
const orderHash = crypto.solSHA3([
this.params.exchangeContractAddress,
this.params.maker,
this.params.taker,
this.params.makerToken,
this.params.takerToken,
this.params.feeRecipient,
this.params.makerTokenAmount,
this.params.takerTokenAmount,
this.params.makerFee,
this.params.takerFee,
this.params.expirationTimestampInSec,
this.params.salt,
]);
const orderHashHex = ethUtil.bufferToHex(orderHash);
return orderHashHex;
}
}
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