/*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License.
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*/
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/**
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* Utility functions for managing date and time operations.
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*/
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/**
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* return the current time in Unix time (seconds).
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*/
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export function nowSeconds(): number {
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// Date.getTime() returns in milliseconds.
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return Math.round(new Date().getTime() / 1000.0);
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}
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/**
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* Converts JS Date object to seconds
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* @param date Date
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*/
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export function toSecondsFromDate(date: Date): number {
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// Convert date to seconds
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return date.getTime() / 1000;
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}
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/**
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* Convert seconds to JS Date object. Seconds can be in a number or string format or undefined (will still return a date).
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* @param seconds
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*/
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export function toDateFromSeconds(seconds: number | string | undefined): Date {
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if (seconds) {
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return new Date(Number(seconds) * 1000);
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}
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return new Date();
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}
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/**
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* check if a token is expired based on given UTC time in seconds.
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* @param expiresOn
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*/
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export function isTokenExpired(expiresOn: string, offset: number): boolean {
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// check for access token expiry
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const expirationSec = Number(expiresOn) || 0;
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const offsetCurrentTimeSec = nowSeconds() + offset;
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// If current time + offset is greater than token expiration time, then token is expired.
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return offsetCurrentTimeSec > expirationSec;
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}
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/**
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* Checks if a cache entry is expired based on the last updated time and cache retention days.
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* @param lastUpdatedAt
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* @param cacheRetentionDays
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* @returns
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*/
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export function isCacheExpired(
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lastUpdatedAt: string,
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cacheRetentionDays: number
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): boolean {
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const cacheExpirationTimestamp =
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Number(lastUpdatedAt) + cacheRetentionDays * 24 * 60 * 60 * 1000;
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return Date.now() > cacheExpirationTimestamp;
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}
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/**
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* If the current time is earlier than the time that a token was cached at, we must discard the token
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* i.e. The system clock was turned back after acquiring the cached token
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* @param cachedAt
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* @param offset
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*/
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export function wasClockTurnedBack(cachedAt: string): boolean {
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const cachedAtSec = Number(cachedAt);
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return cachedAtSec > nowSeconds();
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}
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/**
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* Waits for t number of milliseconds
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* @param t number
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* @param value T
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*/
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export function delay<T>(t: number, value?: T): Promise<T | void> {
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return new Promise((resolve) => setTimeout(() => resolve(value), t));
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}
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