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-rw-r--r--packages/instant/src/components/buy_button.tsx120
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diff --git a/packages/instant/src/components/buy_button.tsx b/packages/instant/src/components/buy_button.tsx
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index 551e857a5..000000000
--- a/packages/instant/src/components/buy_button.tsx
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-import { AssetBuyer, AssetBuyerError, BuyQuote } 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 { oc } from 'ts-optchain';
-
-import { WEB_3_WRAPPER_TRANSACTION_FAILED_ERROR_MSG_PREFIX } from '../constants';
-import { ColorOption } from '../style/theme';
-import { AffiliateInfo, Asset, ZeroExInstantError } from '../types';
-import { analytics } from '../util/analytics';
-import { errorReporter } from '../util/error_reporter';
-import { gasPriceEstimator } from '../util/gas_price_estimator';
-import { util } from '../util/util';
-
-import { Button } from './ui/button';
-
-export interface BuyButtonProps {
- accountAddress?: string;
- accountEthBalanceInWei?: BigNumber;
- buyQuote?: BuyQuote;
- assetBuyer: AssetBuyer;
- web3Wrapper: Web3Wrapper;
- affiliateInfo?: AffiliateInfo;
- selectedAsset?: Asset;
- onValidationPending: (buyQuote: BuyQuote) => void;
- onValidationFail: (buyQuote: BuyQuote, errorMessage: AssetBuyerError | ZeroExInstantError) => void;
- onSignatureDenied: (buyQuote: BuyQuote) => void;
- onBuyProcessing: (buyQuote: BuyQuote, txHash: string, startTimeUnix: number, expectedEndTimeUnix: number) => void;
- onBuySuccess: (buyQuote: BuyQuote, txHash: string) => void;
- onBuyFailure: (buyQuote: BuyQuote, txHash: string) => void;
-}
-
-export class BuyButton extends React.PureComponent<BuyButtonProps> {
- public static defaultProps = {
- onClick: util.boundNoop,
- onBuySuccess: util.boundNoop,
- onBuyFailure: util.boundNoop,
- };
- public render(): React.ReactNode {
- const { buyQuote, accountAddress, selectedAsset } = this.props;
- const shouldDisableButton = _.isUndefined(buyQuote) || _.isUndefined(accountAddress);
- const buttonText =
- !_.isUndefined(selectedAsset) && selectedAsset.metaData.assetProxyId === AssetProxyId.ERC20
- ? `Buy ${selectedAsset.metaData.symbol.toUpperCase()}`
- : 'Buy Now';
- return (
- <Button
- width="100%"
- onClick={this._handleClick}
- isDisabled={shouldDisableButton}
- fontColor={ColorOption.white}
- >
- {buttonText}
- </Button>
- );
- }
- private readonly _handleClick = async () => {
- // The button is disabled when there is no buy quote anyway.
- const { buyQuote, assetBuyer, affiliateInfo, accountAddress, accountEthBalanceInWei, web3Wrapper } = this.props;
- if (_.isUndefined(buyQuote) || _.isUndefined(accountAddress)) {
- return;
- }
- this.props.onValidationPending(buyQuote);
- const ethNeededForBuy = buyQuote.worstCaseQuoteInfo.totalEthAmount;
- // if we don't have a balance for the user, let the transaction through, it will be handled by the wallet
- const hasSufficientEth = _.isUndefined(accountEthBalanceInWei) || accountEthBalanceInWei.gte(ethNeededForBuy);
- if (!hasSufficientEth) {
- analytics.trackBuyNotEnoughEth(buyQuote);
- this.props.onValidationFail(buyQuote, ZeroExInstantError.InsufficientETH);
- return;
- }
- let txHash: string | undefined;
- const gasInfo = await gasPriceEstimator.getGasInfoAsync();
- const feeRecipient = oc(affiliateInfo).feeRecipient();
- try {
- analytics.trackBuyStarted(buyQuote);
- txHash = await assetBuyer.executeBuyQuoteAsync(buyQuote, {
- feeRecipient,
- takerAddress: accountAddress,
- gasPrice: gasInfo.gasPriceInWei,
- });
- } catch (e) {
- if (e instanceof Error) {
- if (e.message === AssetBuyerError.TransactionValueTooLow) {
- analytics.trackBuySimulationFailed(buyQuote);
- this.props.onValidationFail(buyQuote, AssetBuyerError.TransactionValueTooLow);
- return;
- } else if (e.message === AssetBuyerError.SignatureRequestDenied) {
- analytics.trackBuySignatureDenied(buyQuote);
- this.props.onSignatureDenied(buyQuote);
- return;
- } else {
- errorReporter.report(e);
- analytics.trackBuyUnknownError(buyQuote, e.message);
- this.props.onValidationFail(buyQuote, ZeroExInstantError.CouldNotSubmitTransaction);
- return;
- }
- }
- throw e;
- }
- const startTimeUnix = new Date().getTime();
- const expectedEndTimeUnix = startTimeUnix + gasInfo.estimatedTimeMs;
- this.props.onBuyProcessing(buyQuote, txHash, startTimeUnix, expectedEndTimeUnix);
- try {
- analytics.trackBuyTxSubmitted(buyQuote, txHash, startTimeUnix, expectedEndTimeUnix);
- await web3Wrapper.awaitTransactionSuccessAsync(txHash);
- } catch (e) {
- if (e instanceof Error && e.message.startsWith(WEB_3_WRAPPER_TRANSACTION_FAILED_ERROR_MSG_PREFIX)) {
- analytics.trackBuyTxFailed(buyQuote, txHash, startTimeUnix, expectedEndTimeUnix);
- this.props.onBuyFailure(buyQuote, txHash);
- return;
- }
- throw e;
- }
- analytics.trackBuyTxSucceeded(buyQuote, txHash, startTimeUnix, expectedEndTimeUnix);
- this.props.onBuySuccess(buyQuote, txHash);
- };
-}