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import { AssetProxyId } from '@0x/types';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import { Dispatch } from 'redux';
import { BIG_NUMBER_ZERO } from '../constants';
import { AccountState, ERC20Asset, OrderProcessState, ProviderState } from '../types';
import { assetUtils } from '../util/asset';
import { buyQuoteUpdater } from '../util/buy_quote_updater';
import { coinbaseApi } from '../util/coinbase_api';
import { errorFlasher } from '../util/error_flasher';
import { actions } from './actions';
import { State } from './reducer';
export const asyncData = {
fetchEthPriceAndDispatchToStore: async (dispatch: Dispatch) => {
try {
const ethUsdPrice = await coinbaseApi.getEthUsdPrice();
dispatch(actions.updateEthUsdPrice(ethUsdPrice));
} catch (e) {
const errorMessage = 'Error fetching ETH/USD price';
errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
dispatch(actions.updateEthUsdPrice(BIG_NUMBER_ZERO));
}
},
fetchAvailableAssetDatasAndDispatchToStore: async (state: State, dispatch: Dispatch) => {
const { providerState, assetMetaDataMap, network } = state;
const assetBuyer = providerState.assetBuyer;
try {
const assetDatas = await assetBuyer.getAvailableAssetDatasAsync();
const assets = assetUtils.createAssetsFromAssetDatas(assetDatas, assetMetaDataMap, network);
dispatch(actions.setAvailableAssets(assets));
} catch (e) {
const errorMessage = 'Could not find any assets';
errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
// On error, just specify that none are available
dispatch(actions.setAvailableAssets([]));
}
},
fetchAccountInfoAndDispatchToStore: async (
providerState: ProviderState,
dispatch: Dispatch,
shouldAttemptUnlock: boolean = false,
shouldSetToLoading: boolean = false,
) => {
const web3Wrapper = providerState.web3Wrapper;
const provider = providerState.provider;
if (shouldSetToLoading && providerState.account.state !== AccountState.Loading) {
dispatch(actions.setAccountStateLoading());
}
let availableAddresses: string[];
try {
// TODO(bmillman): Add support at the web3Wrapper level for calling `eth_requestAccounts` instead of calling enable here
const isPrivacyModeEnabled = !_.isUndefined((provider as any).enable);
availableAddresses =
isPrivacyModeEnabled && shouldAttemptUnlock
? await (provider as any).enable()
: await web3Wrapper.getAvailableAddressesAsync();
} catch (e) {
dispatch(actions.setAccountStateLocked());
return;
}
if (!_.isEmpty(availableAddresses)) {
const activeAddress = availableAddresses[0];
dispatch(actions.setAccountStateReady(activeAddress));
// tslint:disable-next-line:no-floating-promises
asyncData.fetchAccountBalanceAndDispatchToStore(activeAddress, providerState.web3Wrapper, dispatch);
} else {
dispatch(actions.setAccountStateLocked());
}
},
fetchAccountBalanceAndDispatchToStore: async (address: string, web3Wrapper: Web3Wrapper, dispatch: Dispatch) => {
try {
const ethBalanceInWei = await web3Wrapper.getBalanceInWeiAsync(address);
dispatch(actions.updateAccountEthBalance({ address, ethBalanceInWei }));
} catch (e) {
// leave balance as is
return;
}
},
fetchCurrentBuyQuoteAndDispatchToStore: async (
state: State,
dispatch: Dispatch,
options: { updateSilently: boolean },
) => {
const { buyOrderState, providerState, selectedAsset, selectedAssetUnitAmount, affiliateInfo } = state;
const assetBuyer = providerState.assetBuyer;
if (
!_.isUndefined(selectedAssetUnitAmount) &&
!_.isUndefined(selectedAsset) &&
buyOrderState.processState === OrderProcessState.None &&
selectedAsset.metaData.assetProxyId === AssetProxyId.ERC20
) {
await buyQuoteUpdater.updateBuyQuoteAsync(
assetBuyer,
dispatch,
selectedAsset as ERC20Asset,
selectedAssetUnitAmount,
{ setPending: !options.updateSilently, dispatchErrors: !options.updateSilently, affiliateInfo },
);
}
},
};
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