38 lines
1.4 KiB
TypeScript
38 lines
1.4 KiB
TypeScript
import { Order, SignedOrder, ZeroEx } from '0x.js';
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import { BigNumber } from '@0xproject/utils';
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import { Web3Wrapper } from '@0xproject/web3-wrapper';
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import * as _ from 'lodash';
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import { DefaultOrderParams } from './types';
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export class OrderFactory {
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private _defaultOrderParams: Partial<Order>;
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private _zeroEx: ZeroEx;
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constructor(zeroEx: ZeroEx, defaultOrderParams: Partial<Order>) {
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this._defaultOrderParams = defaultOrderParams;
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this._zeroEx = zeroEx;
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}
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public async newSignedOrderAsync(customOrderParams: Partial<Order> = {}): Promise<SignedOrder> {
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const randomExpiration = new BigNumber(Math.floor((Date.now() + Math.random() * 100000000000) / 1000));
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const order = ({
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expirationUnixTimestampSec: randomExpiration,
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salt: ZeroEx.generatePseudoRandomSalt(),
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taker: ZeroEx.NULL_ADDRESS,
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...this._defaultOrderParams,
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...customOrderParams,
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} as any) as Order;
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const orderHashHex = ZeroEx.getOrderHashHex(order);
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const shouldAddPersonalMessagePrefix = false;
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const ecSignature = await this._zeroEx.signOrderHashAsync(
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orderHashHex,
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order.maker,
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shouldAddPersonalMessagePrefix,
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);
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const signedOrder = {
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...order,
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ecSignature,
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};
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return signedOrder;
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}
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}
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