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-rw-r--r--packages/instant/src/components/buy_button.tsx106
1 files changed, 94 insertions, 12 deletions
diff --git a/packages/instant/src/components/buy_button.tsx b/packages/instant/src/components/buy_button.tsx
index 5a32b9575..877ab275c 100644
--- a/packages/instant/src/components/buy_button.tsx
+++ b/packages/instant/src/components/buy_button.tsx
@@ -1,19 +1,101 @@
+import { AssetBuyer, AssetBuyerError, BuyQuote } from '@0x/asset-buyer';
+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, ZeroExInstantError } from '../types';
+import { gasPriceEstimator } from '../util/gas_price_estimator';
+import { util } from '../util/util';
-import { Button, Container, Text } from './ui';
+import { Button } from './ui/button';
-export interface BuyButtonProps {}
+export interface BuyButtonProps {
+ accountAddress?: string;
+ accountEthBalanceInWei?: BigNumber;
+ buyQuote?: BuyQuote;
+ assetBuyer: AssetBuyer;
+ web3Wrapper: Web3Wrapper;
+ affiliateInfo?: AffiliateInfo;
+ 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 const BuyButton: React.StatelessComponent<BuyButtonProps> = props => (
- <Container padding="20px" width="100%">
- <Button width="100%">
- <Text fontColor={ColorOption.white} fontWeight={600} fontSize="20px">
+export class BuyButton extends React.Component<BuyButtonProps> {
+ public static defaultProps = {
+ onClick: util.boundNoop,
+ onBuySuccess: util.boundNoop,
+ onBuyFailure: util.boundNoop,
+ };
+ public render(): React.ReactNode {
+ const { buyQuote, accountAddress } = this.props;
+ const shouldDisableButton = _.isUndefined(buyQuote) || _.isUndefined(accountAddress);
+ return (
+ <Button
+ width="100%"
+ onClick={this._handleClick}
+ isDisabled={shouldDisableButton}
+ fontColor={ColorOption.white}
+ fontSize="20px"
+ >
Buy
- </Text>
- </Button>
- </Container>
-);
-
-BuyButton.displayName = 'BuyButton';
+ </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) {
+ this.props.onValidationFail(buyQuote, ZeroExInstantError.InsufficientETH);
+ return;
+ }
+ let txHash: string | undefined;
+ const gasInfo = await gasPriceEstimator.getGasInfoAsync();
+ const feeRecipient = oc(affiliateInfo).feeRecipient();
+ try {
+ txHash = await assetBuyer.executeBuyQuoteAsync(buyQuote, {
+ feeRecipient,
+ takerAddress: accountAddress,
+ gasPrice: gasInfo.gasPriceInWei,
+ });
+ } catch (e) {
+ if (e instanceof Error) {
+ if (e.message === AssetBuyerError.SignatureRequestDenied) {
+ this.props.onSignatureDenied(buyQuote);
+ return;
+ } else if (e.message === AssetBuyerError.TransactionValueTooLow) {
+ this.props.onValidationFail(buyQuote, AssetBuyerError.TransactionValueTooLow);
+ return;
+ }
+ }
+ throw e;
+ }
+ const startTimeUnix = new Date().getTime();
+ const expectedEndTimeUnix = startTimeUnix + gasInfo.estimatedTimeMs;
+ this.props.onBuyProcessing(buyQuote, txHash, startTimeUnix, expectedEndTimeUnix);
+ try {
+ await web3Wrapper.awaitTransactionSuccessAsync(txHash);
+ } catch (e) {
+ if (e instanceof Error && e.message.startsWith(WEB_3_WRAPPER_TRANSACTION_FAILED_ERROR_MSG_PREFIX)) {
+ this.props.onBuyFailure(buyQuote, txHash);
+ return;
+ }
+ throw e;
+ }
+ this.props.onBuySuccess(buyQuote, txHash);
+ };
+}