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import { ObjectMap } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { Provider } from 'ethereum-types';
import * as _ from 'lodash';
import * as React from 'react';
import { Provider as ReduxProvider } from 'react-redux';
import { SelectedAssetThemeProvider } from '../containers/selected_asset_theme_provider';
import { asyncData } from '../redux/async_data';
import { DEFAULT_STATE, DefaultState, State } from '../redux/reducer';
import { store, Store } from '../redux/store';
import { fonts } from '../style/fonts';
import { AffiliateInfo, AssetMetaData, Network, OrderSource } from '../types';
import { assetUtils } from '../util/asset';
import { errorFlasher } from '../util/error_flasher';
import { gasPriceEstimator } from '../util/gas_price_estimator';
import { providerStateFactory } from '../util/provider_state_factory';
fonts.include();
export type ZeroExInstantProviderProps = ZeroExInstantProviderRequiredProps &
Partial<ZeroExInstantProviderOptionalProps>;
export interface ZeroExInstantProviderRequiredProps {
orderSource: OrderSource;
}
export interface ZeroExInstantProviderOptionalProps {
provider: Provider;
availableAssetDatas: string[];
defaultAssetBuyAmount: number;
defaultSelectedAssetData: string;
additionalAssetMetaDataMap: ObjectMap<AssetMetaData>;
networkId: Network;
affiliateInfo: AffiliateInfo;
}
export class ZeroExInstantProvider extends React.Component<ZeroExInstantProviderProps> {
private readonly _store: Store;
// TODO(fragosti): Write tests for this beast once we inject a provider.
private static _mergeDefaultStateWithProps(
props: ZeroExInstantProviderProps,
defaultState: DefaultState = DEFAULT_STATE,
): State {
// use the networkId passed in with the props, otherwise default to that of the default state (1, mainnet)
const networkId = props.networkId || defaultState.network;
// construct the ProviderState
const providerState = providerStateFactory.getInitialProviderState(
props.orderSource,
networkId,
props.provider,
);
// merge the additional additionalAssetMetaDataMap with our default map
const completeAssetMetaDataMap = {
...props.additionalAssetMetaDataMap,
...defaultState.assetMetaDataMap,
};
// construct the final state
const storeStateFromProps: State = {
...defaultState,
providerState,
network: networkId,
selectedAsset: _.isUndefined(props.defaultSelectedAssetData)
? undefined
: assetUtils.createAssetFromAssetDataOrThrow(
props.defaultSelectedAssetData,
completeAssetMetaDataMap,
networkId,
),
selectedAssetAmount: _.isUndefined(props.defaultAssetBuyAmount)
? undefined
: new BigNumber(props.defaultAssetBuyAmount),
availableAssets: _.isUndefined(props.availableAssetDatas)
? undefined
: assetUtils.createAssetsFromAssetDatas(props.availableAssetDatas, completeAssetMetaDataMap, networkId),
assetMetaDataMap: completeAssetMetaDataMap,
affiliateInfo: props.affiliateInfo,
};
return storeStateFromProps;
}
constructor(props: ZeroExInstantProviderProps) {
super(props);
const initialAppState = ZeroExInstantProvider._mergeDefaultStateWithProps(this.props);
this._store = store.create(initialAppState);
}
public componentDidMount(): void {
const state = this._store.getState();
// tslint:disable-next-line:no-floating-promises
asyncData.fetchEthPriceAndDispatchToStore(this._store);
// fetch available assets if none are specified
if (_.isUndefined(state.availableAssets)) {
// tslint:disable-next-line:no-floating-promises
asyncData.fetchAvailableAssetDatasAndDispatchToStore(this._store);
}
// warm up the gas price estimator cache just in case we can't
// grab the gas price estimate when submitting the transaction
// tslint:disable-next-line:no-floating-promises
gasPriceEstimator.getGasInfoAsync();
// tslint:disable-next-line:no-floating-promises
this._flashErrorIfWrongNetwork();
}
public render(): React.ReactNode {
return (
<ReduxProvider store={this._store}>
<SelectedAssetThemeProvider>{this.props.children}</SelectedAssetThemeProvider>
</ReduxProvider>
);
}
private readonly _flashErrorIfWrongNetwork = async (): Promise<void> => {
const msToShowError = 30000; // 30 seconds
const state = this._store.getState();
const network = state.network;
const web3Wrapper = state.providerState.web3Wrapper;
const networkOfProvider = await web3Wrapper.getNetworkIdAsync();
if (network !== networkOfProvider) {
const errorMessage = `Wrong network detected. Try switching to ${Network[network]}.`;
errorFlasher.flashNewErrorMessage(this._store.dispatch, errorMessage, msToShowError);
}
};
}
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