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wip: abstract out updating buy quote

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This commit is contained in:
Steve Klebanoff 2018-11-08 16:14:00 -08:00
parent 624f5cee8d
commit dd4d3b10cf
2 changed files with 59 additions and 39 deletions
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43
packages/instant/src/containers/selected_erc20_asset_amount_input.ts
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@ -1,20 +1,17 @@
import { AssetBuyer, AssetBuyerError, BuyQuote } from '@0x/asset-buyer';
import { AssetBuyer } from '@0x/asset-buyer';
import { AssetProxyId } from '@0x/types';
import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import * as React from 'react';
import { connect } from 'react-redux';
import { Dispatch } from 'redux';
import { oc } from 'ts-optchain';
import { ERC20AssetAmountInput } from '../components/erc20_asset_amount_input';
import { Action, actions } from '../redux/actions';
import { State } from '../redux/reducer';
import { ColorOption } from '../style/theme';
import { AffiliateInfo, ERC20Asset, OrderProcessState } from '../types';
import { assetUtils } from '../util/asset';
import { errorFlasher } from '../util/error_flasher';
import { updateBuyQuoteOrFlashErrorAsync } from '../util/buy_quote_fetcher';
export interface SelectedERC20AssetAmountInputProps {
fontColor?: ColorOption;
@ -77,42 +74,10 @@ const updateBuyQuoteAsync = async (
assetAmount: BigNumber,
affiliateInfo?: AffiliateInfo,
): Promise<void> => {
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, asset.metaData.decimals);
// mark quote as pending
dispatch(actions.setQuoteRequestStatePending());
const feePercentage = oc(affiliateInfo).feePercentage();
let newBuyQuote: BuyQuote | undefined;
try {
newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue, { feePercentage });
} catch (error) {
dispatch(actions.setQuoteRequestStateFailure());
let errorMessage;
if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
errorMessage = `Not enough ${assetName} available`;
} else if (error.message === AssetBuyerError.InsufficientZrxLiquidity) {
errorMessage = 'Not enough ZRX available';
} else if (
error.message === AssetBuyerError.StandardRelayerApiError ||
error.message.startsWith(AssetBuyerError.AssetUnavailable)
) {
const assetName = assetUtils.bestNameForAsset(asset, 'This asset');
errorMessage = `${assetName} is currently unavailable`;
}
if (!_.isUndefined(errorMessage)) {
errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
} else {
throw error;
}
return;
}
// We have a successful new buy quote
errorFlasher.clearError(dispatch);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
// kick of buy quote
updateBuyQuoteOrFlashErrorAsync(assetBuyer, asset, assetAmount, dispatch, affiliateInfo);
};
const debouncedUpdateBuyQuoteAsync = _.debounce(updateBuyQuoteAsync, 200, { trailing: true });

55
packages/instant/src/util/buy_quote_fetcher.ts Normal file
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@ -0,0 +1,55 @@
// TODO: rename file and export object
import { AssetBuyer, AssetBuyerError, 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 { Action, actions } from '../redux/actions';
import { AffiliateInfo, ERC20Asset } from '../types';
import { assetUtils } from '../util/asset';
import { errorFlasher } from './error_flasher';
export const updateBuyQuoteOrFlashErrorAsync = async (
assetBuyer: AssetBuyer,
asset: ERC20Asset,
assetAmount: BigNumber,
dispatch: Dispatch<Action>,
affiliateInfo?: AffiliateInfo,
) => {
// get a new buy quote.
const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, asset.metaData.decimals);
const feePercentage = oc(affiliateInfo).feePercentage();
let newBuyQuote: BuyQuote | undefined;
try {
newBuyQuote = await assetBuyer.getBuyQuoteAsync(asset.assetData, baseUnitValue, { feePercentage });
} catch (error) {
dispatch(actions.setQuoteRequestStateFailure());
let errorMessage;
if (error.message === AssetBuyerError.InsufficientAssetLiquidity) {
const assetName = assetUtils.bestNameForAsset(asset, 'of this asset');
errorMessage = `Not enough ${assetName} available`;
} else if (error.message === AssetBuyerError.InsufficientZrxLiquidity) {
errorMessage = 'Not enough ZRX available';
} else if (
error.message === AssetBuyerError.StandardRelayerApiError ||
error.message.startsWith(AssetBuyerError.AssetUnavailable)
) {
const assetName = assetUtils.bestNameForAsset(asset, 'This asset');
errorMessage = `${assetName} is currently unavailable`;
}
if (!_.isUndefined(errorMessage)) {
errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
} else {
throw error;
}
return;
}
// We have a successful new buy quote
errorFlasher.clearError(dispatch);
// invalidate the last buy quote.
dispatch(actions.updateLatestBuyQuote(newBuyQuote));
};