session-desktop/ts/util/formatRelativeTime.ts
2019-03-12 17:44:14 -07:00

57 lines
1.6 KiB
TypeScript

import moment from 'moment';
import { LocalizerType } from '../types/Util';
const getExtendedFormats = (i18n: LocalizerType) => ({
y: 'lll',
M: `${i18n('timestampFormat_M') || 'MMM D'} LT`,
d: 'ddd LT',
});
const getShortFormats = (i18n: LocalizerType) => ({
y: 'll',
M: i18n('timestampFormat_M') || 'MMM D',
d: 'ddd',
});
function isToday(timestamp: moment.Moment) {
const today = moment().format('ddd');
const targetDay = moment(timestamp).format('ddd');
return today === targetDay;
}
function isYear(timestamp: moment.Moment) {
const year = moment().format('YYYY');
const targetYear = moment(timestamp).format('YYYY');
return year === targetYear;
}
export function formatRelativeTime(
rawTimestamp: number | Date,
options: { extended?: boolean; i18n: LocalizerType }
) {
const { extended, i18n } = options;
const formats = extended ? getExtendedFormats(i18n) : getShortFormats(i18n);
const timestamp = moment(rawTimestamp);
const now = moment();
const diff = moment.duration(now.diff(timestamp));
if (diff.years() >= 1 || !isYear(timestamp)) {
return timestamp.format(formats.y);
} else if (diff.months() >= 1 || diff.days() > 6) {
return timestamp.format(formats.M);
} else if (diff.days() >= 1 || !isToday(timestamp)) {
return timestamp.format(formats.d);
} else if (diff.hours() >= 1) {
const key = extended ? 'hoursAgo' : 'hoursAgoShort';
return i18n(key, [String(diff.hours())]);
} else if (diff.minutes() >= 1) {
const key = extended ? 'minutesAgo' : 'minutesAgoShort';
return i18n(key, [String(diff.minutes())]);
}
return i18n('justNow');
}