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import * as _ from 'lodash';
import { BIG_NUMBER_ZERO } from '../constants';
import { AccountState } from '../types';
import { assetUtils } from '../util/asset';
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 (store: Store) => {
const { providerState } = store.getState();
const web3Wrapper = providerState.web3Wrapper;
if (providerState.account.state !== AccountState.Loading) {
store.dispatch(actions.setAccountStateLoading());
}
let availableAddresses: string[];
try {
availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
} catch (e) {
store.dispatch(actions.setAccountStateError());
return;
}
if (!_.isEmpty(availableAddresses)) {
const activeAddress = availableAddresses[0];
store.dispatch(actions.setAccountStateReady(activeAddress));
await 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 ethBalanceInWei = await web3Wrapper.getBalanceInWeiAsync(account.address);
store.dispatch(actions.updateAccountEthBalance(ethBalanceInWei));
} catch (e) {
// leave balance as is
return;
}
},
};
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