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import { Provider, SignedOrder } from '@0xproject/types';
import { BigNumber } from '@0xproject/utils';
import * as _ from 'lodash';
import { getOrderHashHex } from './order_hash';
import { generatePseudoRandomSalt } from './salt';
import { signOrderHashAsync } from './signature_utils';
const SHOULD_ADD_PERSONAL_MESSAGE_PREFIX = false;
export const orderFactory = {
async createSignedOrderAsync(
provider: Provider,
maker: string,
taker: string,
makerFee: BigNumber,
takerFee: BigNumber,
makerTokenAmount: BigNumber,
makerTokenAddress: string,
takerTokenAmount: BigNumber,
takerTokenAddress: string,
exchangeContractAddress: string,
feeRecipient: string,
expirationUnixTimestampSecIfExists?: BigNumber,
): Promise<SignedOrder> {
const defaultExpirationUnixTimestampSec = new BigNumber(2524604400); // Close to infinite
const expirationUnixTimestampSec = _.isUndefined(expirationUnixTimestampSecIfExists)
? defaultExpirationUnixTimestampSec
: expirationUnixTimestampSecIfExists;
const order = {
maker,
taker,
makerFee,
takerFee,
makerTokenAmount,
takerTokenAmount,
makerTokenAddress,
takerTokenAddress,
salt: generatePseudoRandomSalt(),
exchangeContractAddress,
feeRecipient,
expirationUnixTimestampSec,
};
const orderHash = getOrderHashHex(order);
const ecSignature = await signOrderHashAsync(provider, orderHash, maker, SHOULD_ADD_PERSONAL_MESSAGE_PREFIX);
const signedOrder: SignedOrder = _.assign(order, { ecSignature });
return signedOrder;
},
};
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