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author | Amir Bandeali <abandeali1@gmail.com> | 2018-02-09 09:09:34 +0800 |
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committer | Amir Bandeali <abandeali1@gmail.com> | 2018-04-21 04:56:16 +0800 |
commit | 7201a74aeaa6b646e97d7c9c2c4cc979ace5f4f7 (patch) | |
tree | f0cd69fbe346bc6e7fcd8cb1a4f010e8d4513804 /packages/contracts/src/utils/order_factory.ts | |
parent | 9e2f8bead9a51a4c30b77781ae3b39bed31c36ee (diff) | |
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Move utils dir into src
Diffstat (limited to 'packages/contracts/src/utils/order_factory.ts')
-rw-r--r-- | packages/contracts/src/utils/order_factory.ts | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/packages/contracts/src/utils/order_factory.ts b/packages/contracts/src/utils/order_factory.ts new file mode 100644 index 000000000..8ba5df24a --- /dev/null +++ b/packages/contracts/src/utils/order_factory.ts @@ -0,0 +1,37 @@ +import { Order, SignedOrder, ZeroEx } from '0x.js'; +import { BigNumber } from '@0xproject/utils'; +import { Web3Wrapper } from '@0xproject/web3-wrapper'; +import * as _ from 'lodash'; + +import { DefaultOrderParams } from './types'; + +export class OrderFactory { + private _defaultOrderParams: Partial<Order>; + private _zeroEx: ZeroEx; + constructor(zeroEx: ZeroEx, defaultOrderParams: Partial<Order>) { + this._defaultOrderParams = defaultOrderParams; + this._zeroEx = zeroEx; + } + public async newSignedOrderAsync(customOrderParams: Partial<Order> = {}): Promise<SignedOrder> { + const randomExpiration = new BigNumber(Math.floor((Date.now() + Math.random() * 100000000000) / 1000)); + const order = ({ + expirationUnixTimestampSec: randomExpiration, + salt: ZeroEx.generatePseudoRandomSalt(), + taker: ZeroEx.NULL_ADDRESS, + ...this._defaultOrderParams, + ...customOrderParams, + } as any) as Order; + const orderHashHex = ZeroEx.getOrderHashHex(order); + const shouldAddPersonalMessagePrefix = false; + const ecSignature = await this._zeroEx.signOrderHashAsync( + orderHashHex, + order.maker, + shouldAddPersonalMessagePrefix, + ); + const signedOrder = { + ...order, + ecSignature, + }; + return signedOrder; + } +} |