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Nextcloud-News/js/filter/RelativeTimestamp.js
2021-07-24 14:52:34 +02:00

59 lines
2.1 KiB
JavaScript

/**
* Nextcloud - News
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Alec Kojaev <alec@kojaev.name>
* @copyright Alec Kojaev 2021
*/
app.filter('relativeTimestamp', ['SettingsResource', function (SettingsResource) {
'use strict';
const languageCode = SettingsResource.get('language');
const relFormat = Intl.RelativeTimeFormat ?
new Intl.RelativeTimeFormat(languageCode, { numeric: 'auto' }) : null;
const maxRelDistance = 90*86400*1000;
const relLimits = [
[ 7*86400*1000, 'week' ],
[ 86400*1000, 'day' ],
[ 3600*1000, 'hour' ],
[ 60*1000, 'minute' ],
[ 1*1000, 'second' ]
];
const absLimits = [
[ 7*86400*1000, { hour: '2-digit', minute: '2-digit', dayPeriod: 'narrow',
year: 'numeric', month: 'short', day: 'numeric' } ],
[ 43200*1000, { hour: '2-digit', minute: '2-digit', dayPeriod: 'narrow',
weekday: 'long' } ],
[ 0, { hour: '2-digit', minute: '2-digit', dayPeriod: 'narrow' } ]
];
return function (timestamp) {
if (!Number.isFinite(timestamp)) {
return timestamp;
}
const ts = new Date(timestamp);
const dist = ts.getTime() - Date.now();
const absDist = Math.abs(dist);
if (relFormat && absDist < maxRelDistance) {
for (const [ scale, unit ] of relLimits) {
const value = Math.trunc(dist / scale);
if (value !== 0) {
return relFormat.format(value, unit);
}
}
// We arrive here only if distance from now is less than 1 second
return relFormat.format(0, 'second');
} else {
for (const [ limit, options ] of absLimits) {
if (absDist >= limit) {
return ts.toLocaleString(languageCode, options);
}
}
// We shouldn't be here
return ts.toLocaleString(languageCode, absLimits[absLimits.length - 1][1]);
}
};
}]);