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import { assert as sharedAssert } from '@0xproject/assert';
// HACK: We need those two unused imports because they're actually used by sharedAssert which gets injected here
import { Schema } from '@0xproject/json-schemas'; // tslint:disable-line:no-unused-variable
import { assetDataUtils, isValidSignatureAsync } from '@0xproject/order-utils';
import { ECSignature, Order } from '@0xproject/types'; // tslint:disable-line:no-unused-variable
import { BigNumber } from '@0xproject/utils'; // tslint:disable-line:no-unused-variable
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import { constants } from './constants';
export const assert = {
...sharedAssert,
async isValidSignatureAsync(
provider: Provider,
orderHash: string,
signature: string,
signerAddress: string,
): Promise<void> {
const isValid = await isValidSignatureAsync(provider, orderHash, signature, signerAddress);
sharedAssert.assert(isValid, `Expected order with hash '${orderHash}' to have a valid signature`);
},
isValidSubscriptionToken(variableName: string, subscriptionToken: string): void {
const uuidRegex = new RegExp('^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$');
const isValid = uuidRegex.test(subscriptionToken);
sharedAssert.assert(isValid, `Expected ${variableName} to be a valid subscription token`);
},
async isSenderAddressAsync(
variableName: string,
senderAddressHex: string,
web3Wrapper: Web3Wrapper,
): Promise<void> {
sharedAssert.isETHAddressHex(variableName, senderAddressHex);
const isSenderAddressAvailable = await web3Wrapper.isSenderAddressAvailableAsync(senderAddressHex);
sharedAssert.assert(
isSenderAddressAvailable,
`Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
);
},
ordersCanBeUsedForForwarderContract(orders: Order[], etherTokenAddress: string): void {
sharedAssert.assert(!_.isEmpty(orders), 'Expected at least 1 signed order. Found no orders');
assert.ordersHaveAtMostOneUniqueValueForProperty(orders, 'makerAssetData');
assert.allTakerAssetDatasAreErc20Token(orders, etherTokenAddress);
assert.allTakerAddressesAreNull(orders);
},
feeOrdersCanBeUsedForForwarderContract(orders: Order[], zrxTokenAddress: string, etherTokenAddress: string): void {
if (!_.isEmpty(orders)) {
assert.allMakerAssetDatasAreErc20Token(orders, zrxTokenAddress);
assert.allTakerAssetDatasAreErc20Token(orders, etherTokenAddress);
}
},
allTakerAddressesAreNull(orders: Order[]): void {
assert.ordersHaveAtMostOneUniqueValueForProperty(orders, 'takerAddress', constants.NULL_ADDRESS);
},
allMakerAssetDatasAreErc20Token(orders: Order[], tokenAddress: string): void {
assert.ordersHaveAtMostOneUniqueValueForProperty(
orders,
'makerAssetData',
assetDataUtils.encodeERC20AssetData(tokenAddress),
);
},
allTakerAssetDatasAreErc20Token(orders: Order[], tokenAddress: string): void {
assert.ordersHaveAtMostOneUniqueValueForProperty(
orders,
'takerAssetData',
assetDataUtils.encodeERC20AssetData(tokenAddress),
);
},
/*
* Asserts that all the orders have the same value for the provided propertyName
* If the value parameter is provided, this asserts that all orders have the prope
*/
ordersHaveAtMostOneUniqueValueForProperty(orders: Order[], propertyName: string, value?: any): void {
const allValues = _.map(orders, order => _.get(order, propertyName));
sharedAssert.hasAtMostOneUniqueValue(
allValues,
`Expected all orders to have the same ${propertyName} field. Found the following ${propertyName} values: ${JSON.stringify(
allValues,
)}`,
);
if (!_.isUndefined(value)) {
const firstValue = _.head(allValues);
sharedAssert.assert(
firstValue === value,
`Expected all orders to have a ${propertyName} field with value: ${value}. Found: ${firstValue}`,
);
}
},
};
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