/*
 * Copyright (C) 2007-2022 Crafter Software Corporation. All Rights Reserved.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3 as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import { Moment } from 'moment-timezone';
import GlobalState from '../models/GlobalState';
export interface TimezoneDescriptor {
  name: string;
  offset: string;
}
export declare const getTimezones: () => TimezoneDescriptor[];
export declare function asDayMonthDateTime(date: string): string;
export declare function asLocalizedDateTime(
  date: string | number | Date,
  localeCode: string,
  dateTimeFormatOptions?: GlobalState['uiConfig']['locale']['dateTimeFormatOptions']
): string;
export declare function getUserTimeZone(): string;
export declare function getUserLocaleCode(): string;
/**
 * Create ISO 8601 string
 **/
export declare const create8601String: (date: string, time: string, offset: string) => string;
/**
 * Returns an array as ['yyyy-mm-dd', 'hh:mm:ss', '+/-nn:nn'] out of a ISO 8601 date string
 **/
export declare const get8601Pieces: (date: string | Date | number | Moment) => string[];
export declare function isSameDay(date1: Date, date2: Date): boolean;
/**
 * Returns the Z offset (e.g. +01:00) from the offset number that represents the difference,
 * in minutes, between this date as evaluated in the UTC time zone, and the same date as evaluated
 * in the local time zone
 **/
export declare function getFormattedGmtOffsetFromTimezoneOffset(timezoneOffset: number): string;
/**
 * Returns true if the date object is a valid date, false otherwise
 **/
export declare function isValidDate(date: Date): boolean;
/**
 * Returns the Z offset (e.g. +01:00) of a timezone name, considering daylight savings of the date.
 **/
export declare function getZDateOffset(date: Date | Moment, timezone: string): string;
/**
 * Creates a Date object that's the same moment in time as the original date but expressed in the target timezone
 **/
export declare function createTransposedToTimezoneDate(date: Date | Moment, targetTimezone: string): Date;
/**
 * Creates a date that's at least half hour from now.
 **/
export declare function createAtLeastHalfHourInFutureDate(): Date;