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83 lines
2.1 KiB
83 lines
2.1 KiB
import dayjs from "dayjs";
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import timezone from "dayjs/plugin/timezone";
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import utc from "dayjs/plugin/utc";
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import timezones from "timezones-list";
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import { localeDirection, currentLocale } from "./i18n";
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dayjs.extend(utc);
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dayjs.extend(timezone);
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/**
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* Returns the offset from UTC in hours for the current locale.
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* @returns {number} The offset from UTC in hours.
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*
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* Generated by Trelent
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*/
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function getTimezoneOffset(timeZone) {
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const now = new Date();
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const tzString = now.toLocaleString("en-US", {
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timeZone,
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});
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const localString = now.toLocaleString("en-US");
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const diff = (Date.parse(localString) - Date.parse(tzString)) / 3600000;
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const offset = diff + now.getTimezoneOffset() / 60;
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return -offset;
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}
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/**
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* Returns a list of timezones sorted by their offset from UTC.
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* @param {Array} timezones - An array of timezone objects.
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* @returns {Array} A list of the given timezones sorted by their offset from UTC.
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*
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* Generated by Trelent
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*/
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export function timezoneList() {
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let result = [];
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for (let timezone of timezones) {
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try {
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let display = dayjs().tz(timezone.tzCode).format("Z");
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result.push({
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name: `(UTC${display}) ${timezone.tzCode}`,
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value: timezone.tzCode,
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time: getTimezoneOffset(timezone.tzCode),
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});
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} catch (e) {
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// Skipping not supported timezone.tzCode by dayjs
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}
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}
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result.sort((a, b) => {
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if (a.time > b.time) {
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return 1;
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}
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if (b.time > a.time) {
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return -1;
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}
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return 0;
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});
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return result;
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}
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export function setPageLocale() {
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const html = document.documentElement;
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html.setAttribute("lang", currentLocale() );
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html.setAttribute("dir", localeDirection() );
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}
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/**
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* Mainly used for dev, because the backend and the frontend are in different ports.
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*/
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export function getResBaseURL() {
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const env = process.env.NODE_ENV;
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if (env === "development" || localStorage.dev === "dev") {
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return location.protocol + "//" + location.hostname + ":3001";
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} else {
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return "";
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}
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}
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