front-hub/src/utils/date.ts

import { getDeclension } from "./declension";


export function isDateToday(date: Date): boolean {
    const today = new Date();
    today.setHours(0, 0, 0, 0);
    return date.getTime() > today.getTime();
}

const avgDaysInMonth = 30.43692;
const avgDaysInYear = 365.242199;

export function formatDateWithDeclention(numberOfDays: number) {
    if (numberOfDays === 0) return "0 дней";

    const years = Math.floor(numberOfDays / avgDaysInYear);
    const months = Math.floor(numberOfDays % avgDaysInYear / avgDaysInMonth);
    const days = Math.floor(numberOfDays % avgDaysInYear % avgDaysInMonth);

    const yearsDisplay = years > 0 ? `${years} ${getDeclension(years, "год")}` : "";
    const monthsDisplay = months > 0 ? `${months} ${getDeclension(months, "месяц")}` : "";
    const daysDisplay = days > 0 ? `${days} ${getDeclension(days, "день")}` : "";

    return `${yearsDisplay} ${monthsDisplay} ${daysDisplay}`;
}