feat: 多语言支持 https://github.com/vastsa/FileCodeBox/issues/310 https://github.com/vastsa/FileCodeBox/issues/299

src/i18n/index.ts

@@ -0,0 +1,50 @@
+import { createI18n } from 'vue-i18n'
+import zhCN from './locales/zh-CN'
+import enUS from './locales/en-US'
+
+// 获取浏览器语言设置
+const getDefaultLocale = (): string => {
+  const savedLocale = localStorage.getItem('locale')
+  if (savedLocale) {
+    return savedLocale
+  }
+  
+  const browserLocale = navigator.language.toLowerCase()
+  if (browserLocale.startsWith('zh')) {
+    return 'zh-CN'
+  }
+  return 'en-US'
+}
+
+const messages = {
+  'zh-CN': zhCN,
+  'en-US': enUS
+}
+
+const i18n = createI18n({
+  legacy: false, // 使用 Composition API 模式
+  locale: getDefaultLocale(),
+  fallbackLocale: 'zh-CN',
+  messages,
+  globalInjection: true // 全局注入 $t 函数
+})
+
+export default i18n
+
+// 导出切换语言的函数
+export const setLocale = (locale: string) => {
+  i18n.global.locale.value = locale as 'zh-CN' | 'en-US'
+  localStorage.setItem('locale', locale)
+  document.documentElement.lang = locale
+}
+
+// 导出获取当前语言的函数
+export const getCurrentLocale = () => {
+  return i18n.global.locale.value
+}
+
+// 导出可用语言列表
+export const availableLocales = [
+  { code: 'zh-CN', name: '中文' },
+  { code: 'en-US', name: 'English' }
+]