next
Version:
The React Framework
53 lines (52 loc) • 2.84 kB
JavaScript
import { acceptLanguage } from '../../../server/accept-header';
import { denormalizePagePath } from '../page-path/denormalize-page-path';
import { detectDomainLocale } from './detect-domain-locale';
import { formatUrl } from '../router/utils/format-url';
import { getCookieParser } from '../../../server/api-utils/get-cookie-parser';
function getLocaleFromCookie(i18n, headers) {
if (headers === void 0) headers = {};
var _getCookieParser_NEXT_LOCALE, _getCookieParser;
const nextLocale = (_getCookieParser = getCookieParser(headers || {})()) == null ? void 0 : (_getCookieParser_NEXT_LOCALE = _getCookieParser.NEXT_LOCALE) == null ? void 0 : _getCookieParser_NEXT_LOCALE.toLowerCase();
return nextLocale ? i18n.locales.find((locale)=>nextLocale === locale.toLowerCase()) : undefined;
}
function detectLocale(param) {
let { i18n, headers, domainLocale, preferredLocale, pathLocale } = param;
return pathLocale || (domainLocale == null ? void 0 : domainLocale.defaultLocale) || getLocaleFromCookie(i18n, headers) || preferredLocale || i18n.defaultLocale;
}
function getAcceptPreferredLocale(i18n, headers) {
if ((headers == null ? void 0 : headers['accept-language']) && !Array.isArray(headers['accept-language'])) {
try {
return acceptLanguage(headers['accept-language'], i18n.locales);
} catch (err) {}
}
}
export function getLocaleRedirect(param) {
let { defaultLocale, domainLocale, pathLocale, headers, nextConfig, urlParsed } = param;
if (nextConfig.i18n && nextConfig.i18n.localeDetection !== false && denormalizePagePath(urlParsed.pathname) === '/') {
const preferredLocale = getAcceptPreferredLocale(nextConfig.i18n, headers);
const detectedLocale = detectLocale({
i18n: nextConfig.i18n,
preferredLocale,
headers,
pathLocale,
domainLocale
});
const preferredDomain = detectDomainLocale(nextConfig.i18n.domains, undefined, preferredLocale);
if (domainLocale && preferredDomain) {
const isPDomain = preferredDomain.domain === domainLocale.domain;
const isPLocale = preferredDomain.defaultLocale === preferredLocale;
if (!isPDomain || !isPLocale) {
const scheme = "http" + (preferredDomain.http ? '' : 's');
const rlocale = isPLocale ? '' : preferredLocale;
return scheme + "://" + preferredDomain.domain + "/" + rlocale;
}
}
if (detectedLocale.toLowerCase() !== defaultLocale.toLowerCase()) {
return formatUrl({
...urlParsed,
pathname: (nextConfig.basePath || '') + "/" + detectedLocale + (nextConfig.trailingSlash ? '/' : '')
});
}
}
}
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