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metamask-extension/ui/hooks/useShouldShowSpeedUp.js

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import { useEffect, useState } from 'react';
import { SECOND } from '../../shared/constants/time';
/**
* Evaluates whether the transaction is eligible to be sped up, and registers
* an effect to check the logic again after the transaction has surpassed 5 seconds
* of queue time.
*
* @param {Object} transactionGroup - the transaction group to check against
* @param {boolean} isEarliestNonce - Whether this group is currently the earliest nonce
*/
2020-11-03 00:41:28 +01:00
export function useShouldShowSpeedUp(transactionGroup, isEarliestNonce) {
const { transactions, hasRetried } = transactionGroup;
const [earliestTransaction = {}] = transactions;
const { submittedTime } = earliestTransaction;
const [speedUpEnabled, setSpeedUpEnabled] = useState(() => {
return Date.now() - submittedTime > 5000 && isEarliestNonce && !hasRetried;
});
useEffect(() => {
// because this hook is optimized to only run on changes we have to
// key into the changing time delta between submittedTime and now()
// and if the status of the transaction changes based on that difference
// trigger a setState call to tell react to re-render. This effect will
// also immediately set retryEnabled and not create a timeout if the
// condition is already met. This effect will run anytime the variables
// for determining enabled status change
let timeoutId;
if (!hasRetried && isEarliestNonce && !speedUpEnabled) {
if (Date.now() - submittedTime > SECOND * 5) {
setSpeedUpEnabled(true);
} else {
timeoutId = setTimeout(() => {
setSpeedUpEnabled(true);
clearTimeout(timeoutId);
}, 5001 - (Date.now() - submittedTime));
}
}
// Anytime the effect is re-ran, make sure to remove a previously set timeout
// so as to avoid multiple timers potentially overlapping
return () => {
if (timeoutId) {
clearTimeout(timeoutId);
}
};
}, [submittedTime, speedUpEnabled, hasRetried, isEarliestNonce]);
return speedUpEnabled;
}