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Ensure users reacknowledge price slippage risks when it changes (#10376)

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David Walsh 2021-02-05 14:40:40 -06:00 committed by GitHub
parent 913fd5aad6
commit 531c35bc96
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1 changed files with 21 additions and 1 deletions
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22
ui/app/pages/swaps/view-quote/view-quote.js
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@ -9,6 +9,7 @@ import SelectQuotePopover from '../select-quote-popover';
import { useEthFiatAmount } from '../../../hooks/useEthFiatAmount';
import { useEqualityCheck } from '../../../hooks/useEqualityCheck';
import { useNewMetricEvent } from '../../../hooks/useMetricEvent';
import { usePrevious } from '../../../hooks/usePrevious';
import { useSwapsEthToken } from '../../../hooks/useSwapsEthToken';
import { MetaMetricsContext } from '../../../contexts/metametrics.new';
import FeeCard from '../fee-card';
@ -93,6 +94,7 @@ export default function ViewQuote() {
acknowledgedPriceDifference,
setAcknowledgedPriceDifference,
] = useState(false);
const priceDifferenceRiskyBuckets = ['high', 'medium'];
const routeState = useSelector(getBackgroundSwapRouteState);
const quotes = useSelector(getQuotes, isEqual);
@ -481,6 +483,24 @@ export default function ViewQuote() {
]);
// Price difference warning
const priceSlippageBucket = usedQuote?.priceSlippage?.bucket;
const lastPriceDifferenceBucket = usePrevious(priceSlippageBucket);
// If the user agreed to a different bucket of risk, make them agree again
useEffect(() => {
if (
acknowledgedPriceDifference &&
lastPriceDifferenceBucket === 'medium' &&
priceSlippageBucket === 'high'
) {
setAcknowledgedPriceDifference(false);
}
}, [
priceSlippageBucket,
acknowledgedPriceDifference,
lastPriceDifferenceBucket,
]);
let viewQuotePriceDifferenceComponent = null;
const priceSlippageFromSource = useEthFiatAmount(
usedQuote?.priceSlippage?.sourceAmountInETH || 0,
@ -510,7 +530,7 @@ export default function ViewQuote() {
const shouldShowPriceDifferenceWarning =
!showInsufficientWarning &&
usedQuote &&
(['high', 'medium'].includes(usedQuote.priceSlippage.bucket) ||
(priceDifferenceRiskyBuckets.includes(priceSlippageBucket) ||
priceSlippageUnknownFiatValue);
if (shouldShowPriceDifferenceWarning) {