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import { AssetBuyer } from '@0x/asset-buyer';
import { ObjectMap, SignedOrder } from '@0x/types';
import * as _ from 'lodash';
import * as React from 'react';
import { Provider } from 'react-redux';
import { SelectedAssetThemeProvider } from '../containers/selected_asset_theme_provider';
import { asyncData } from '../redux/async_data';
import { INITIAL_STATE, State } from '../redux/reducer';
import { store, Store } from '../redux/store';
import { fonts } from '../style/fonts';
import { AssetMetaData, Network } from '../types';
import { assetUtils } from '../util/asset';
import { BigNumberInput } from '../util/big_number_input';
import { errorFlasher } from '../util/error_flasher';
import { gasPriceEstimator } from '../util/gas_price_estimator';
import { getProvider } from '../util/provider';
import { web3Wrapper } from '../util/web3_wrapper';
fonts.include();
export type ZeroExInstantProviderProps = ZeroExInstantProviderRequiredProps &
Partial<ZeroExInstantProviderOptionalProps>;
export interface ZeroExInstantProviderRequiredProps {
orderSource: string | SignedOrder[];
}
export interface ZeroExInstantProviderOptionalProps {
availableAssetDatas: string[];
defaultAssetBuyAmount: number;
defaultSelectedAssetData: string;
additionalAssetMetaDataMap: ObjectMap<AssetMetaData>;
networkId: Network;
}
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 _mergeInitialStateWithProps(props: ZeroExInstantProviderProps, state: State = INITIAL_STATE): State {
const networkId = props.networkId || state.network;
// TODO: Provider needs to not be hard-coded to injected web3.
const provider = getProvider();
const assetBuyerOptions = {
networkId,
};
let assetBuyer;
if (_.isString(props.orderSource)) {
assetBuyer = AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(
provider,
props.orderSource,
assetBuyerOptions,
);
} else {
assetBuyer = AssetBuyer.getAssetBuyerForProvidedOrders(provider, props.orderSource, assetBuyerOptions);
}
const completeAssetMetaDataMap = {
...props.additionalAssetMetaDataMap,
...state.assetMetaDataMap,
};
const storeStateFromProps: State = {
...state,
assetBuyer,
network: networkId,
selectedAsset: _.isUndefined(props.defaultSelectedAssetData)
? undefined
: assetUtils.createAssetFromAssetDataOrThrow(
props.defaultSelectedAssetData,
completeAssetMetaDataMap,
networkId,
),
selectedAssetAmount: _.isUndefined(props.defaultAssetBuyAmount)
? state.selectedAssetAmount
: new BigNumberInput(props.defaultAssetBuyAmount),
availableAssets: _.isUndefined(props.availableAssetDatas)
? undefined
: assetUtils.createAssetsFromAssetDatas(props.availableAssetDatas, completeAssetMetaDataMap, networkId),
assetMetaDataMap: completeAssetMetaDataMap,
};
return storeStateFromProps;
}
constructor(props: ZeroExInstantProviderProps) {
super(props);
const initialAppState = ZeroExInstantProvider._mergeInitialStateWithProps(this.props, INITIAL_STATE);
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.getFastAmountInWeiAsync();
// tslint:disable-next-line:no-floating-promises
this._flashErrorIfWrongNetwork();
}
public render(): React.ReactNode {
return (
<Provider store={this._store}>
<SelectedAssetThemeProvider>{this.props.children}</SelectedAssetThemeProvider>
</Provider>
);
}
private readonly _flashErrorIfWrongNetwork = async (): Promise<void> => {
const msToShowError = 30000; // 30 seconds
const network = this._store.getState().network;
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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