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import { AssetProxyId } from '@0x/types';
import * as _ from 'lodash';
import { BIG_NUMBER_ZERO } from '../constants';
import { AccountState, ERC20Asset, OrderProcessState } 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 { Store } from './store';
export const asyncData = {
fetchEthPriceAndDispatchToStore: async (store: Store) => {
try {
const ethUsdPrice = await coinbaseApi.getEthUsdPrice();
store.dispatch(actions.updateEthUsdPrice(ethUsdPrice));
} catch (e) {
const errorMessage = 'Error fetching ETH/USD price';
errorFlasher.flashNewErrorMessage(store.dispatch, errorMessage);
store.dispatch(actions.updateEthUsdPrice(BIG_NUMBER_ZERO));
}
},
fetchAvailableAssetDatasAndDispatchToStore: async (store: Store) => {
const { providerState, assetMetaDataMap, network } = store.getState();
const assetBuyer = providerState.assetBuyer;
try {
const assetDatas = await assetBuyer.getAvailableAssetDatasAsync();
const assets = assetUtils.createAssetsFromAssetDatas(assetDatas, assetMetaDataMap, network);
store.dispatch(actions.setAvailableAssets(assets));
} catch (e) {
const errorMessage = 'Could not find any assets';
errorFlasher.flashNewErrorMessage(store.dispatch, errorMessage);
// On error, just specify that none are available
store.dispatch(actions.setAvailableAssets([]));
}
},
fetchAccountInfoAndDispatchToStore: async (options: { store: Store; shouldSetToLoading: boolean }) => {
const { store, shouldSetToLoading } = options;
const { providerState } = store.getState();
const web3Wrapper = providerState.web3Wrapper;
const provider = providerState.provider;
if (shouldSetToLoading && providerState.account.state !== AccountState.Loading) {
store.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
? await (provider as any).enable()
: await web3Wrapper.getAvailableAddressesAsync();
} catch (e) {
store.dispatch(actions.setAccountStateLocked());
return;
}
if (!_.isEmpty(availableAddresses)) {
const activeAddress = availableAddresses[0];
store.dispatch(actions.setAccountStateReady(activeAddress));
// tslint:disable-next-line:no-floating-promises
asyncData.fetchAccountBalanceAndDispatchToStore(store);
} else {
store.dispatch(actions.setAccountStateLocked());
}
},
fetchAccountBalanceAndDispatchToStore: async (store: Store) => {
const { providerState } = store.getState();
const web3Wrapper = providerState.web3Wrapper;
const account = providerState.account;
if (account.state !== AccountState.Ready) {
return;
}
try {
const address = account.address;
const ethBalanceInWei = await web3Wrapper.getBalanceInWeiAsync(address);
store.dispatch(actions.updateAccountEthBalance({ address, ethBalanceInWei }));
} catch (e) {
// leave balance as is
return;
}
},
fetchCurrentBuyQuoteAndDispatchToStore: async (options: { store: Store; shouldSetPending: boolean }) => {
const { store, shouldSetPending } = options;
const {
buyOrderState,
providerState,
selectedAsset,
selectedAssetUnitAmount,
affiliateInfo,
} = store.getState();
const assetBuyer = providerState.assetBuyer;
if (
!_.isUndefined(selectedAssetUnitAmount) &&
!_.isUndefined(selectedAsset) &&
buyOrderState.processState === OrderProcessState.None &&
selectedAsset.metaData.assetProxyId === AssetProxyId.ERC20
) {
await buyQuoteUpdater.updateBuyQuoteAsync(
assetBuyer,
store.dispatch,
selectedAsset as ERC20Asset,
selectedAssetUnitAmount,
shouldSetPending,
affiliateInfo,
);
}
},
};
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