docbrown/app/assets/javascripts/utilities/timeAgo.js
2019-03-08 13:07:23 -05:00

37 lines
1.1 KiB
JavaScript

function secondsToHumanUnitAgo(seconds) {
const times = [
['second', 1],
['min', 60],
['hour', 60*60],
['day', 60*60*24],
['week', 60*60*24*7],
['month', 60*60*24*30],
['year', 60*60*24*365],
];
if(seconds < times[0][1])
return "just now";
let scale = 0;
// If the amount of seconds is more than a minute, we change the scale to minutes
// If the amount of seconds then is more than an hour, we change the scale to hours
// This continues until the unit above our current scale is longer than `seconds`, or doesn't exist
while(scale+1 < times.length && seconds >= times[scale+1][1])
scale+=1;
const wholeUnits = Math.floor(seconds / times[scale][1]);
const unitName = times[scale][0] + (wholeUnits === 1 ? '' : 's');
return wholeUnits + " " + unitName + " ago";
}
function timeAgo(oldTimeInSeconds, maxDisplayedAge = 60*60*24-1) {
const timeNow = new Date() / 1000;
const diff = Math.round(timeNow - oldTimeInSeconds);
if(diff > maxDisplayedAge)
return '';
return "<span class='time-ago-indicator'>(" + secondsToHumanUnitAgo(diff) + ")</span>";
}