zapishis-client/packages/utils/src/datetime-format.ts

/* eslint-disable import/no-unassigned-import */
import { isBrowser } from './environment';
import 'dayjs/locale/ru';
import dayjs from 'dayjs';
import { noop } from 'radashi';

export function combineDateTime(date: Date, time: string) {
  const [hours = '00', minutes = '00'] = time.split(':');

  return new Date(
    date.getFullYear(),
    date.getMonth(),
    date.getDate(),
    Number.parseInt(hours, 10),
    Number.parseInt(minutes, 10),
  );
}

export function formatDate(date: Date | string) {
  if (!date) return { db: noop, user: noop };

  return {
    db: () => dayjs(date).format('YYYY-MM-DD'),
    user: (template?: string, fallbackLang: string = 'ru') => {
      const lang = isBrowser() ? document.documentElement.lang || fallbackLang : fallbackLang;

      dayjs.locale(lang);

      return dayjs(date).format(template || 'D MMMM YYYY');
    },
  };
}

export function formatTime(time: string) {
  const [hours = '00', minutes = '00'] = time.split(':');

  return {
    db: () => `${hours}:${minutes}:00`,
    user: () => `${hours}:${minutes}`,
  };
}

export function getMinutes(time: string) {
  const [hours = '00', minutes = '00'] = time.split(':');
  return Number.parseInt(hours, 10) * 60 + Number.parseInt(minutes, 10);
}

export function sumTime(time1: string, time2: string) {
  const [hours1 = '00', minutes1 = '00'] = time1.split(':');
  const [hours2 = '00', minutes2 = '00'] = time2.split(':');

  let totalMinutes = Number.parseInt(minutes1, 10) + Number.parseInt(minutes2, 10);
  let totalHours = Number.parseInt(hours1, 10) + Number.parseInt(hours2, 10);

  totalHours += Math.floor(totalMinutes / 60);
  totalMinutes %= 60;

  const paddedHours = totalHours.toString().padStart(2, '0');
  const paddedMinutes = totalMinutes.toString().padStart(2, '0');

  return `${paddedHours}:${paddedMinutes}`;
}