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metamask-extension/ui/pages/swaps/countdown-timer/countdown-timer.js

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import React, { useState, useEffect, useContext, useRef } from 'react';
import { useSelector } from 'react-redux';
import PropTypes from 'prop-types';
import classnames from 'classnames';
import { Duration } from 'luxon';
import { I18nContext } from '../../../contexts/i18n';
import InfoTooltip from '../../../components/ui/info-tooltip';
import { getSwapsQuoteRefreshTime } from '../../../ducks/swaps/swaps';
import { SECOND } from '../../../../shared/constants/time';
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// Return the mm:ss start time of the countdown timer.
// If time has elapsed between `timeStarted` the time current time,
// then that elapsed time will be subtracted from the timer before
// rendering
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function getNewTimer(currentTime, timeStarted, timeBaseStart) {
const timeAlreadyElapsed = currentTime - timeStarted;
return timeBaseStart - timeAlreadyElapsed;
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}
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function decreaseTimerByOne(timer) {
return Math.max(timer - SECOND, 0);
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}
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function timeBelowWarningTime(timer, warningTime) {
const [warningTimeMinutes, warningTimeSeconds] = warningTime.split(':');
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return (
timer <=
(Number(warningTimeMinutes) * 60 + Number(warningTimeSeconds)) * SECOND
);
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}
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export default function CountdownTimer({
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timeStarted,
timeOnly,
timerBase,
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warningTime,
labelKey,
infoTooltipLabelKey,
}) {
const t = useContext(I18nContext);
const intervalRef = useRef();
const initialTimeStartedRef = useRef();
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const swapsQuoteRefreshTime = useSelector(getSwapsQuoteRefreshTime);
const timerStart = Number(timerBase) || swapsQuoteRefreshTime;
const [currentTime, setCurrentTime] = useState(() => Date.now());
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const [timer, setTimer] = useState(() =>
getNewTimer(currentTime, timeStarted, timerStart),
);
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useEffect(() => {
if (intervalRef.current === undefined) {
intervalRef.current = setInterval(() => {
setTimer(decreaseTimerByOne);
}, SECOND);
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}
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return function cleanup() {
clearInterval(intervalRef.current);
};
}, []);
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// Reset the timer that timer has hit '0:00' and the timeStarted prop has changed
useEffect(() => {
if (!initialTimeStartedRef.current) {
initialTimeStartedRef.current = timeStarted || Date.now();
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}
if (timer === 0 && timeStarted !== initialTimeStartedRef.current) {
initialTimeStartedRef.current = timeStarted;
const newCurrentTime = Date.now();
setCurrentTime(newCurrentTime);
setTimer(getNewTimer(newCurrentTime, timeStarted, timerStart));
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clearInterval(intervalRef.current);
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intervalRef.current = setInterval(() => {
setTimer(decreaseTimerByOne);
}, SECOND);
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}
}, [timeStarted, timer, timerStart]);
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const formattedTimer = Duration.fromMillis(timer).toFormat('m:ss');
let time;
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if (timeOnly) {
time = <div className="countdown-timer__time">{formattedTimer}</div>;
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} else if (labelKey) {
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time = t(labelKey, [
<div key="countdown-time-1" className="countdown-timer__time">
{formattedTimer}
</div>,
]);
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}
return (
<div className="countdown-timer">
<div
Increase Jest unit test coverage for the Swaps feature to ~25% (#10900) * Swaps: Show a network name dynamically in a tooltip * Replace “Ethereum” with “$1”, change “Test” to “Testnet” * Replace 이더리움 with $1 * Translate network names, use ‘Ethereum’ by default if a translation is not available yet * Reorder messages to resolve ESLint issues * Add a snapshot test for the FeeCard component, increase Jest threshold * Enable snapshot testing into external .snap files in ESLint * Add the “networkNameEthereum” key in ko/messages.json, remove default “Ethereum” value * Throw an error if chain ID is not supported by the Swaps feature * Use string literals when calling the `t` fn, * Watch Jest tests silently (no React warnings in terminal, only errors) * Add @testing-library/jest-dom, import it before running Jest tests * Add snapshot testing of Swaps’ React components for happy paths, increase minimum threshold for Jest * Add the test/jest folder for Jest setup and shared functions, use it in Swaps Jest tests * Fix ESLint issues, update linting config * Enable ESLint for .snap files (Jest snapshots), throw an error if a snapshot is bigger than 50 lines * Don’t run lint:fix for .snap files * Move `createProps` outside of `describe` blocks, move store creation inside tests * Use translations instead of keys, update a rendering function to load translations * Make sure all Jest snapshots are shorter than 50 lines (default limit) * Add / update props for Swaps tests * Fix React warnings when running tests for Swaps
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data-testid="countdown-timer__timer-container"
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className={classnames('countdown-timer__timer-container', {
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'countdown-timer__timer-container--warning':
warningTime && timeBelowWarningTime(timer, warningTime),
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})}
>
{time}
</div>
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{!timeOnly && infoTooltipLabelKey ? (
<InfoTooltip position="bottom" contentText={t(infoTooltipLabelKey)} />
) : null}
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</div>
);
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}
CountdownTimer.propTypes = {
timeStarted: PropTypes.number,
timeOnly: PropTypes.bool,
timerBase: PropTypes.number,
warningTime: PropTypes.string,
labelKey: PropTypes.string,
infoTooltipLabelKey: PropTypes.string,
};