Air-Quality-Web/client_src/js/Helpers/DateHelper.mjs

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"use strict";
function human_duration_unit(milliseconds) {
let seconds = Math.floor(milliseconds / 1000);
if(seconds <= 60) return "second";
if(seconds <= 60*60) return "minute";
if(seconds <= 60*60*24) return "hour";
if(seconds <= 60*60*24*45) return "day";
if(seconds <= 60*60*24*365) return "month";
return "year";
}
/**
* Calculates the time since a particular datetime and returns a
* human-readable result.
* @source Ported from PHP in Pepperminty Wiki https://github.com/sbrl/Pepperminty-Wiki/blob/712e954/core/05-functions.php#L55-L89
* @param {Date} datetime The datetime to convert.
* @return {string} The time since the given timestamp as a human-readable string.
*/
function human_time_since(datetime) {
return human_time((new Date() - datetime) / 1000);
}
/**
* Renders a given number of seconds as something that humans can understand more easily.
* @source Ported from PHP in Pepperminty Wiki https://github.com/sbrl/Pepperminty-Wiki/blob/712e954/core/05-functions.php#L55-L89
* @param {int} seconds The number of seconds to render.
* @return {string} The rendered time.
*/
function human_time(seconds)
{
if(seconds < 0) return "the future";
let tokens = new Map([
[ 31536000, 'year' ],
[ 2592000, 'month' ],
[ 604800, 'week' ],
[ 86400, 'day' ],
[ 3600, 'hour' ],
[ 60, 'minute' ],
[ 1, 'second' ]
]);
for(let unit of tokens) {
if (seconds < unit[0]) continue;
numberOfUnits = Math.floor(seconds / unit[0]);
return `${numberOfUnits} ${unit[1]}${((numberOfUnits > 1)?'s':'')} ago`;
}
}
/**
* Rounds a Date to match the specified number of minutes.
* Useful when making API requests to improve caching.
* @param {Date} date The date to round.
* @param {int} interval_minutes The number of minutes to round it to. Should be less than 60.
* @return {void} Doesn't return anything - it mutates the original Date object instead.
*/
function round_date_interval(date, interval_minutes) {
date.setSeconds(0);
date.setMilliseconds(0);
date.setMinutes(
Math.floor(date.getMinutes() / interval_minutes) * interval_minutes
);
}
export {
human_duration_unit,
human_time_since, human_time,
round_date_interval
};