55 lines
1.3 KiB
JavaScript
55 lines
1.3 KiB
JavaScript
import _ from 'lodash';
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import moment from 'moment-timezone';
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import { dayCount } from '../utils/date-utils';
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const daysBetween = 1.5;
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export function prepUniqueDays(cals, tz = 'UTC') {
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return _(cals)
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.map(ts => moment(ts).tz(tz).startOf('day').valueOf())
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.uniq()
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.sort()
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.value();
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}
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export function calcCurrentStreak(cals, tz = 'UTC') {
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let prev = _.last(cals);
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if (moment().tz(tz).startOf('day').diff(prev, 'days') > daysBetween) {
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return 0;
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}
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let currentStreak = 0;
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let streakContinues = true;
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_.forEachRight(cals, cur => {
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if (moment(prev).diff(cur, 'days') < daysBetween) {
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prev = cur;
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currentStreak++;
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} else {
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// current streak found
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streakContinues = false;
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}
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return streakContinues;
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});
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return currentStreak;
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}
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export function calcLongestStreak(cals, tz = 'UTC') {
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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).tz(tz).diff(moment(last).tz(tz), 'days') > daysBetween) {
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tail = head;
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}
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if (dayCount(longest, tz) < dayCount([head, tail], tz)) {
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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, tz);
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}
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