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import { AssetBuyer, BuyQuote } from '@0x/asset-buyer';
import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import { Dispatch } from 'redux';
import { oc } from 'ts-optchain';
import { SLIPPAGE_PERCENTAGE } from '../constants';
import { Action, actions } from '../redux/actions';
import { AffiliateInfo, ERC20Asset, QuoteFetchOrigin } from '../types';
import { analytics } from '../util/analytics';
import { assetUtils } from '../util/asset';
import { errorFlasher } from '../util/error_flasher';
import { errorReporter } from '../util/error_reporter';
export const buyQuoteUpdater = {
updateBuyQuoteAsync: async (
assetBuyer: AssetBuyer,
dispatch: Dispatch<Action>,
asset: ERC20Asset,
assetUnitAmount: BigNumber,
fetchOrigin: QuoteFetchOrigin,
options: {
setPending: boolean;
dispatchErrors: boolean;
affiliateInfo?: AffiliateInfo;
},
): Promise<void> => {
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetUnitAmount, asset.metaData.decimals);
if (options.setPending) {
// mark quote as pending
dispatch(actions.setQuoteRequestStatePending());
}
const feePercentage = oc(options.affiliateInfo).feePercentage();
let newBuyQuote: BuyQuote | undefined;
const slippagePercentage = SLIPPAGE_PERCENTAGE;
try {
newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue, {
feePercentage,
slippagePercentage,
});
} catch (error) {
const errorMessage = assetUtils.assetBuyerErrorMessage(asset, error);
errorReporter.report(error);
analytics.trackQuoteError(error.message ? error.message : 'other', baseUnitValue, fetchOrigin);
if (options.dispatchErrors) {
dispatch(actions.setQuoteRequestStateFailure());
errorFlasher.flashNewErrorMessage(dispatch, errorMessage || 'Error fetching price, please try again');
}
return;
}
// We have a successful new buy quote
errorFlasher.clearError(dispatch);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
analytics.trackQuoteFetched(newBuyQuote, fetchOrigin);
},
};
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