112 lines
3.0 KiB
TypeScript
Executable File
112 lines
3.0 KiB
TypeScript
Executable File
import { NextResponse } from 'next/server';
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import type { NextRequest } from 'next/server';
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import { I18N_CONFIG } from '@nice/i18n';
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// 使用统一的 i18n 配置
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const { supportedLocales, defaultLocale } = I18N_CONFIG;
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export type Locale = typeof supportedLocales[number];
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function getLocale(request: NextRequest): string {
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// 从 Cookie 获取
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const cookieLocale = request.cookies.get('NEXT_LOCALE')?.value;
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if (cookieLocale && (supportedLocales as readonly string[]).includes(cookieLocale)) {
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return cookieLocale;
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}
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// 从 Accept-Language 头获取
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const acceptLanguage = request.headers.get('accept-language') || '';
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const browserLocales = acceptLanguage
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.split(',')
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.map(lang => lang.split(';')[0]?.trim())
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.filter(Boolean)
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.map(lang => lang?.split('-')[0])
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.filter(Boolean);
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for (const browserLocale of browserLocales) {
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if (browserLocale && (supportedLocales as readonly string[]).includes(browserLocale)) {
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return browserLocale;
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}
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}
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return defaultLocale;
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}
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export function middleware(request: NextRequest) {
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const { pathname, search } = request.nextUrl;
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// 跳过不需要处理的路径
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if (
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// API 路由
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pathname.startsWith('/api/') ||
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// Next.js 内部路径
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pathname.startsWith('/_next/') ||
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// 翻译文件路径
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pathname.startsWith('/locales/') ||
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// 静态文件
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pathname.includes('.') ||
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// 特定文件
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pathname === '/favicon.ico' ||
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pathname === '/sitemap.xml' ||
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pathname === '/robots.txt' ||
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// 图片文件
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/\.(jpg|jpeg|png|gif|svg|ico|webp)$/i.test(pathname) ||
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// CSS/JS 文件
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/\.(css|js|mjs)$/i.test(pathname)
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) {
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return NextResponse.next();
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}
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// 检查是否已经有语言前缀
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const hasLocalePrefix = supportedLocales.some(
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locale => pathname.startsWith(`/${locale}/`) || pathname === `/${locale}`
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);
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if (!hasLocalePrefix) {
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// 获取用户的语言偏好
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const locale = getLocale(request);
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// 重定向到带语言前缀的 URL
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const newUrl = new URL(`/${locale}${pathname}`, request.url);
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newUrl.search = search;
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const response = NextResponse.redirect(newUrl);
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// 设置 Cookie 保存语言偏好
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response.cookies.set('NEXT_LOCALE', locale, {
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maxAge: 365 * 24 * 60 * 60, // 1 year
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path: '/',
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sameSite: 'lax'
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});
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return response;
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}
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// 验证语言是否支持
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const pathLocale = pathname.split('/')[1];
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if (pathLocale && !(supportedLocales as readonly string[]).includes(pathLocale)) {
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// 不支持的语言，重定向到默认语言
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const newPathname = pathname.replace(`/${pathLocale}`, `/${defaultLocale}`);
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const newUrl = new URL(newPathname, request.url);
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newUrl.search = search;
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return NextResponse.redirect(newUrl);
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}
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// 添加语言信息到请求头，供服务端组件使用
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const requestHeaders = new Headers(request.headers);
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requestHeaders.set('x-pathname', pathname);
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return NextResponse.next({
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request: {
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headers: requestHeaders,
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}
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});
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}
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// Middleware matcher configuration
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export const config = {
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matcher: [
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'/((?!api|_next/static|_next/image|favicon.ico|locales|.*\\..*).*)'
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],
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};
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