47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
import moment from 'moment';
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import { dayCount } from '../utils/date-utils';
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const daysBetween = 1.5;
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export function calcCurrentStreak(cals) {
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const revCals = cals.slice().reverse();
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if (dayCount([moment(), revCals[0]]) > daysBetween) {
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return 0;
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}
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let streakBroken = false;
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const lastDayInStreak = revCals
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.reduce((current, cal, index) => {
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const before = revCals[index === 0 ? 0 : index - 1];
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if (
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!streakBroken &&
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moment(before).diff(cal, 'days', true) < daysBetween
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) {
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return index;
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}
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streakBroken = true;
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return current;
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}, 0);
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const lastTimestamp = revCals[lastDayInStreak];
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return dayCount([moment(), lastTimestamp]);
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}
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export function calcLongestStreak(cals) {
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let tail = cals[0];
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const longest = cals.reduce((longest, head, index) => {
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const last = cals[index === 0 ? 0 : index - 1];
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// is streak broken
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if (moment(head).diff(last, 'days', true) > daysBetween) {
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tail = head;
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}
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if (dayCount(longest) < dayCount([head, tail])) {
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return [head, tail];
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}
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return longest;
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}, [cals[0], cals[0]]);
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return dayCount(longest);
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}
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