70 lines
2.3 KiB
TypeScript
70 lines
2.3 KiB
TypeScript
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import { NextRequest, NextResponse } from 'next/server';
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import { locales, defaultLocale } from './lib/i18n';
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export function middleware(request: NextRequest) {
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// 在静态导出模式下，中间件不会执行
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// 这个文件保留用于开发和服务器模式
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// 在静态导出模式下跳过中间件逻辑
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if (process.env.NODE_ENV === 'production' && process.env.NEXT_OUTPUT_MODE === 'export') {
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return NextResponse.next();
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}
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const pathname = request.nextUrl.pathname;
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// Check if there is any supported locale in the pathname
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const pathnameIsMissingLocale = locales.every(
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(locale) => !pathname.startsWith(`/${locale}/`) && pathname !== `/${locale}`,
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);
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// Redirect if there is no locale
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if (pathnameIsMissingLocale) {
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// Get locale from Accept-Language header or use default
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const locale = getLocaleFromRequest(request) || defaultLocale;
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// Don't redirect for default locale on root path
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if (locale === defaultLocale && pathname === '/') {
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return NextResponse.next();
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}
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// Redirect to locale-prefixed path for non-default locales
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if (locale !== defaultLocale) {
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return NextResponse.redirect(
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new URL(`/${locale}${pathname === '/' ? '' : pathname}`, request.url),
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);
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}
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}
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return NextResponse.next();
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}
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function getLocaleFromRequest(request: NextRequest): string | undefined {
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// Get locale from cookie first
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const localeCookie = request.cookies.get('locale')?.value;
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if (localeCookie && locales.includes(localeCookie as any)) {
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return localeCookie;
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}
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// Get locale from Accept-Language header
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const acceptLanguage = request.headers.get('accept-language');
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if (acceptLanguage) {
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const preferredLocale = acceptLanguage
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.split(',')
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.map((lang) => lang.split(';')[0].trim())
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.find((lang) => locales.includes(lang as any));
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if (preferredLocale) {
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return preferredLocale;
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}
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}
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return defaultLocale;
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}
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export const config = {
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matcher: [
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// Skip all internal paths (_next), static files, and manifest files
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'/((?!_next|api|favicon.ico|site.webmanifest|.*\\..*).*)',
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],
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};
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