<script setup>
import { onMounted } from 'vue'
import { useRouter } from 'vitepress'
onMounted(() => {
const router = useRouter()
// 优先级：URL 参数 > localStorage > 浏览器语言 > 默认中文
// 与 Landing Page (src/lib/i18n.ts) 保持一致
const stored = localStorage.getItem('preferred-lang')
const params = new URLSearchParams(window.location.search)
const urlLang = params.get('lang')
const browserLang = navigator.language || navigator.userLanguage || ''
let targetLang = 'zh' // 默认中文
// 1. URL 参数（最高优先级）
if (urlLang === 'zh') {
targetLang = 'zh'
} else if (urlLang === 'en') {
targetLang = 'en'
}
// 2. localStorage（用户偏好）
else if (stored === 'zh-CN' || stored === 'zh') {
targetLang = 'zh'
} else if (stored === 'en') {
targetLang = 'en'
}
// 3. 浏览器语言
else if (browserLang.startsWith('zh')) {
targetLang = 'zh'
} else if (/^en/i.test(browserLang)) {
targetLang = 'en'
}
// 4. 默认中文（已设置）
router.go(`/${targetLang}/`)
})
</script>
Detecting your language preference...