62 lines
1.5 KiB
TypeScript
62 lines
1.5 KiB
TypeScript
import type { Locale } from "./translations";
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const LOCALE_COOKIE = "mis_locale";
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let initialized = false;
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let currentLocale: Locale = "en";
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const listeners = new Set<() => void>();
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const isBrowser = () => typeof document !== "undefined";
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function readCookieLocale(): Locale | null {
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if (!isBrowser()) return null;
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const match = document.cookie
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.split(";")
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.map((part) => part.trim())
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.find((part) => part.startsWith(`${LOCALE_COOKIE}=`));
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if (!match) return null;
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const value = match.split("=")[1];
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if (value === "es-MX" || value === "en") return value;
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return null;
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}
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function readLocaleFromDocument(): Locale {
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if (!isBrowser()) return "en";
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const cookieLocale = readCookieLocale();
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if (cookieLocale) return cookieLocale;
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const docLang = document.documentElement.getAttribute("lang");
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if (docLang === "es-MX" || docLang === "en") return docLang;
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return "en";
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}
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function ensureInitialized() {
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if (initialized) return;
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currentLocale = readLocaleFromDocument();
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initialized = true;
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}
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export function getLocaleSnapshot(): Locale {
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if (!isBrowser()) return "en";
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ensureInitialized();
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return currentLocale;
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}
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export function subscribeLocale(listener: () => void) {
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listeners.add(listener);
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return () => listeners.delete(listener);
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}
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export function setLocale(next: Locale) {
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if (isBrowser()) {
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document.documentElement.setAttribute("lang", next);
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document.cookie = `${LOCALE_COOKIE}=${next}; Path=/; Max-Age=31536000; SameSite=Lax`;
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}
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currentLocale = next;
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listeners.forEach((listener) => listener());
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}
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