swaf/src/Time.ts
2021-02-23 17:42:32 +01:00

94 lines
2.5 KiB
TypeScript

export class TimeUnit {
public constructor(
public readonly milliseconds: number,
public readonly longName: string,
public readonly shortName: string,
) {
}
}
export default class Time {
public static readonly UNITS = {
MILLISECOND: {
milliseconds: 1,
longName: 'millisecond',
shortName: 'ms',
},
SECOND: {
milliseconds: 1000,
longName: 'second',
shortName: 's',
},
MINUTE: {
milliseconds: 60 * 1000,
longName: 'minute',
shortName: 'm',
},
HOUR: {
milliseconds: 60 * 60 * 1000,
longName: 'hour',
shortName: 'h',
},
DAY: {
milliseconds: 24 * 60 * 60 * 1000,
longName: 'day',
shortName: 'd',
},
MONTH: {
milliseconds: 30 * 24 * 60 * 60 * 1000,
longName: 'month',
shortName: 'M',
},
YEAR: {
milliseconds: 365 * 24 * 60 * 60 * 1000,
longName: 'year',
shortName: 'y',
},
};
public static humanizeTimeSince(
since: Date,
short?: boolean,
skipOneUnitNumber?: boolean,
units?: TimeUnit[],
): string {
return this.humanizeDuration(Date.now() - since.getTime(), short, skipOneUnitNumber, units);
}
public static humanizeTimeTo(
to: Date,
short?: boolean,
skipOneUnitNumber?: boolean,
units?: TimeUnit[],
): string {
return this.humanizeDuration(to.getTime() - Date.now(), short, skipOneUnitNumber, units);
}
public static humanizeDuration(
duration: number,
short: boolean = false,
skipOneUnitNumber: boolean = false,
units: TimeUnit[] = [
this.UNITS.SECOND,
this.UNITS.MINUTE,
this.UNITS.HOUR,
this.UNITS.DAY,
this.UNITS.MONTH,
this.UNITS.YEAR,
],
): string {
for (let i = units.length - 1; i > 0; i--) {
if (duration >= units[i - 1].milliseconds && duration < units[i].milliseconds) {
const amount = Math.floor(duration / units[i - 1].milliseconds);
const unit = short ?
units[i - 1].shortName :
' ' + units[i - 1].longName + (amount > 1 ? 's' : '');
return (amount > 1 || !skipOneUnitNumber ? amount : '') + unit;
}
}
return 'now';
}
}