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import { AssetBuyer, BigNumber } from '@0x/asset-buyer';
import { assetDataUtils } from '@0x/order-utils';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import {
DEFAULT_ZERO_EX_CONTAINER_SELECTOR,
GIT_SHA as GIT_SHA_FROM_CONSTANT,
INJECTED_DIV_CLASS,
INJECTED_DIV_ID,
NPM_PACKAGE_VERSION,
} from './constants';
import { assetMetaDataMap } from './data/asset_meta_data_map';
import { ZeroExInstantOverlay, ZeroExInstantOverlayProps } from './index';
import { Network, OrderSource } from './types';
import { analytics } from './util/analytics';
import { assert } from './util/assert';
import { orderCoercionUtil } from './util/order_coercion';
import { providerFactory } from './util/provider_factory';
import { util } from './util/util';
const isInstantRendered = (): boolean => !!document.getElementById(INJECTED_DIV_ID);
const validateInstantRenderConfig = (config: ZeroExInstantConfig, selector: string) => {
assert.isValidOrderSource('orderSource', config.orderSource);
if (!_.isUndefined(config.defaultSelectedAssetData)) {
assert.isHexString('defaultSelectedAssetData', config.defaultSelectedAssetData);
}
if (!_.isUndefined(config.additionalAssetMetaDataMap)) {
assert.isValidAssetMetaDataMap('additionalAssetMetaDataMap', config.additionalAssetMetaDataMap);
}
if (!_.isUndefined(config.defaultAssetBuyAmount)) {
assert.isNumber('defaultAssetBuyAmount', config.defaultAssetBuyAmount);
}
if (!_.isUndefined(config.networkId)) {
assert.isNumber('networkId', config.networkId);
}
if (!_.isUndefined(config.availableAssetDatas)) {
assert.areValidAssetDatas('availableAssetDatas', config.availableAssetDatas);
}
if (!_.isUndefined(config.onClose)) {
assert.isFunction('onClose', config.onClose);
}
if (!_.isUndefined(config.zIndex)) {
assert.isNumber('zIndex', config.zIndex);
}
if (!_.isUndefined(config.affiliateInfo)) {
assert.isValidAffiliateInfo('affiliateInfo', config.affiliateInfo);
}
if (!_.isUndefined(config.provider)) {
assert.isWeb3Provider('provider', config.provider);
}
if (!_.isUndefined(config.walletDisplayName)) {
assert.isString('walletDisplayName', config.walletDisplayName);
}
if (!_.isUndefined(config.shouldDisablePushToHistory)) {
assert.isBoolean('shouldDisablePushToHistory', config.shouldDisablePushToHistory);
}
if (!_.isUndefined(config.shouldDisableAnalyticsTracking)) {
assert.isBoolean('shouldDisableAnalyticsTracking', config.shouldDisableAnalyticsTracking);
}
assert.isString('selector', selector);
};
// Render instant and return a callback that allows you to remove it from the DOM.
const renderInstant = (config: ZeroExInstantConfig, selector: string) => {
const appendToIfExists = document.querySelector(selector);
assert.assert(!_.isNull(appendToIfExists), `Could not find div with selector: ${selector}`);
const appendTo = appendToIfExists as Element;
const injectedDiv = document.createElement('div');
injectedDiv.setAttribute('id', INJECTED_DIV_ID);
injectedDiv.setAttribute('class', INJECTED_DIV_CLASS);
appendTo.appendChild(injectedDiv);
const closeInstant = () => {
analytics.trackInstantClosed();
if (!_.isUndefined(config.onClose)) {
config.onClose();
}
appendTo.removeChild(injectedDiv);
};
const instantOverlayProps = {
...config,
// If we are using the history API, just go back to close
onClose: () => (config.shouldDisablePushToHistory ? closeInstant() : window.history.back()),
};
ReactDOM.render(React.createElement(ZeroExInstantOverlay, instantOverlayProps), injectedDiv);
return closeInstant;
};
export interface ZeroExInstantConfig extends ZeroExInstantOverlayProps {
shouldDisablePushToHistory?: boolean;
}
export const render = (config: ZeroExInstantConfig, selector: string = DEFAULT_ZERO_EX_CONTAINER_SELECTOR) => {
// Coerces BigNumber provided in config to version utilized by 0x packages
const coercedConfig = _.assign({}, config, {
orderSource: _.isArray(config.orderSource)
? orderCoercionUtil.coerceOrderArrayFieldsToBigNumber(config.orderSource)
: config.orderSource,
});
validateInstantRenderConfig(coercedConfig, selector);
if (coercedConfig.shouldDisablePushToHistory) {
if (!isInstantRendered()) {
renderInstant(coercedConfig, selector);
}
return;
}
// Before we render, push to history saying that instant is showing for this part of the history.
window.history.pushState({ zeroExInstantShowing: true }, '0x Instant');
let removeInstant = renderInstant(coercedConfig, selector);
// If the integrator defined a popstate handler, save it to __zeroExInstantIntegratorsPopStateHandler
// unless we have already done so on a previous render.
const anyWindow = window as any;
const popStateExistsAndNotSetPreviously = window.onpopstate && !anyWindow.__zeroExInstantIntegratorsPopStateHandler;
anyWindow.__zeroExInstantIntegratorsPopStateHandler = popStateExistsAndNotSetPreviously
? anyWindow.onpopstate.bind(window)
: util.boundNoop;
const onPopStateHandler = (e: PopStateEvent) => {
anyWindow.__zeroExInstantIntegratorsPopStateHandler(e);
const newState = e.state;
if (newState && newState.zeroExInstantShowing) {
// We have returned to a history state that expects instant to be rendered.
if (!isInstantRendered()) {
removeInstant = renderInstant(coercedConfig, selector);
}
} else {
// History has changed to a different state.
if (isInstantRendered()) {
removeInstant();
}
}
};
window.onpopstate = onPopStateHandler;
};
export const assetDataForERC20TokenAddress = (tokenAddress: string): string => {
assert.isETHAddressHex('tokenAddress', tokenAddress);
return assetDataUtils.encodeERC20AssetData(tokenAddress);
};
export const hasMetaDataForAssetData = (assetData: string): boolean => {
assert.isHexString('assetData', assetData);
return assetMetaDataMap[assetData] !== undefined;
};
export const hasLiquidityForAssetDataAsync = async (
assetData: string,
orderSource: OrderSource,
networkId: Network = Network.Mainnet,
provider?: Provider,
): Promise<boolean> => {
assert.isHexString('assetData', assetData);
assert.isValidOrderSource('orderSource', orderSource);
assert.isNumber('networkId', networkId);
if (provider !== undefined) {
assert.isWeb3Provider('provider', provider);
}
const bestProvider: Provider = provider || providerFactory.getFallbackNoSigningProvider(networkId);
const assetBuyerOptions = { networkId };
const assetBuyer = _.isString(orderSource)
? AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(bestProvider, orderSource, assetBuyerOptions)
: AssetBuyer.getAssetBuyerForProvidedOrders(bestProvider, orderSource, assetBuyerOptions);
const liquidity = await assetBuyer.getLiquidityForAssetDataAsync(assetData);
return liquidity.ethValueAvailableInWei.gt(new BigNumber(0));
};
// Write version info to the exported object for debugging
export const GIT_SHA = GIT_SHA_FROM_CONSTANT;
export const NPM_VERSION = NPM_PACKAGE_VERSION;
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