feat: 语言切换

src/api/user.ts

@@ -108,3 +108,20 @@ export const verifyEmailCode = (verifyCode: string): Promise<ApiResponse> => {
 		data: { verifyCode }
 	})
 }
+
+// 获取用户语言设置
+export const getUserLanguage = (): Promise<ApiResponse> => {
+	return request({
+		url: '/buyer/profile/getLanguage',
+		method: 'post'
+	})
+}
+
+// 设置语言
+export const setUserLanguage = (language: string): Promise<ApiResponse> => {
+	return request({
+		url: '/buyer/profile/setLanguage',
+		method: 'post',
+		data: { language }
+	})
+}

src/router/index.ts

@@ -1,4 +1,16 @@
 import { createRouter, createWebHistory } from 'vue-router'
+import { useUserInfoStore } from '@/stores/userInfo'
+import { getUserLanguage } from '@/api/user'
+import i18n from '@/lang/index'
+
+// 语言映射：后端格式 -> i18n 格式
+const backendToI18nLanguage: Record<string, string> = {
+	'en': 'ENGLISH',
+	'zh-CN': 'CHINESE_SIMPLIFIED'
+}
+
+// 语言同步状态缓存（避免每次路由切换都请求）
+let languageSynced = false
 
 /**
  * 路由缓存机制:
@@ -83,6 +95,52 @@ router.beforeEach((to, from, next) => {
   next()
 })
 
-router.afterEach(() => {})
+router.afterEach(async () => {
+	// 检查用户是否已登录
+	const userInfoStore = useUserInfoStore()
+	const token = userInfoStore.state.token
+	
+	if (!token) {
+		languageSynced = false // 未登录时重置同步状态
+		return
+	}
+	
+	// 如果已经同步过，跳过
+	if (languageSynced) {
+		return
+	}
+	
+	try {
+		// 获取用户语言设置
+		const response = await getUserLanguage()
+		const userLanguage = (response as any)?.language // 后端返回 'en' 或 'zh-CN'
+		
+		if (!userLanguage) {
+			return
+		}
+		
+		// 转换为 i18n 格式
+		const i18nLanguage = backendToI18nLanguage[userLanguage]
+		
+		if (!i18nLanguage) {
+			return
+		}
+		
+		// 获取当前 i18n 语言
+		const currentLocale = i18n.global.locale.value
+		
+		// 如果用户语言和本地 i18n 不一致，更新 i18n
+		if (i18nLanguage !== currentLocale) {
+			i18n.global.locale.value = i18nLanguage as 'ENGLISH' | 'CHINESE_SIMPLIFIED'
+			localStorage.setItem('language', i18nLanguage)
+		}
+		
+		// 标记已同步
+		languageSynced = true
+	} catch (error) {
+		// 静默失败，不影响页面正常加载
+		console.warn('Failed to sync user language:', error)
+	}
+})
 
 export default router

src/views/main-header.vue

@@ -87,6 +87,8 @@
 	import myEvent from '@/utils/myEvent'
 	import { useI18n } from 'vue-i18n'
 	import { useUserInfoStore } from '@/stores/userInfo'
+	import { setUserLanguage } from '@/api/user'
+
 	const { t, locale } = useI18n()
 	const userInfoStore = useUserInfoStore()
 	const router = useRouter()
@@ -153,6 +155,12 @@
 	const onLanguageClick = () => {
 		locale.value = locale.value === 'ENGLISH' ? 'CHINESE_SIMPLIFIED' : 'ENGLISH'
 		localStorage.setItem('language', locale.value)
+		console.log(locale.value)
+		const localeMap: Record<string, string> = {
+			ENGLISH: 'en',
+			CHINESE_SIMPLIFIED: 'zh-CN'
+		}
+		setUserLanguage(localeMap[locale.value])
 	}
 </script>
 

src/views/setting/useSettingsForm.ts

@@ -26,11 +26,24 @@ interface UseSettingsFormOptions {
 	locale: Ref<string>
 }
 
+// 前端 UI 使用的语言值（用于下拉选择）
 const languageLocaleMap: Record<LanguageValue, 'ENGLISH' | 'CHINESE_SIMPLIFIED'> = {
 	english: 'ENGLISH',
 	chinese: 'CHINESE_SIMPLIFIED'
 }
 
+// 后端 API 使用的语言值
+const backendLanguageMap: Record<'ENGLISH' | 'CHINESE_SIMPLIFIED', 'en' | 'zh-CN'> = {
+	ENGLISH: 'en',
+	CHINESE_SIMPLIFIED: 'zh-CN'
+}
+
+// 后端语言值转换为前端语言值
+const backendToFrontendLanguage: Record<'en' | 'zh-CN', LanguageValue> = {
+	en: 'english',
+	'zh-CN': 'chinese'
+}
+
 const emailPattern = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
 
 const createDefaultData = (): SettingsData => ({
@@ -58,8 +71,15 @@ const normalizeLanguage = (language: string | null | undefined): LanguageValue =
 		return '' as LanguageValue
 	}
 
-	const normalized = language.trim().toLowerCase()
-	return normalized.includes('chinese') ? 'chinese' : 'english'
+	// 后端返回 'en' 或 'zh-CN'
+	const trimmed = language.trim()
+	if (trimmed === 'en') {
+		return 'english'
+	} else if (trimmed === 'zh-CN') {
+		return 'chinese'
+	}
+
+	return '' as LanguageValue
 }
 
 const buildSettingsDataFromProfile = (profile: Partial<UserProfile>): SettingsData => ({
@@ -308,14 +328,20 @@ export function useSettingsForm({ t, locale }: UseSettingsFormOptions) {
 			return
 		}
 
-		const nextEmail = securityDraft.value.newEmail.trim() || draftData.value.email || ''
+		// 将前端语言值转换为后端格式
+		let backendLanguage = ''
+		if (draftData.value.language) {
+			const i18nLocale = languageLocaleMap[draftData.value.language as LanguageValue]
+			backendLanguage = backendLanguageMap[i18nLocale]
+		}
+
 		const nextData: UserProfile = {
 			firstName: draftData.value.firstName.trim(),
 			lastName: draftData.value.lastName.trim(),
 			username: draftData.value.username.trim(),
-			email: nextEmail,
+			email: securityDraft.value.newEmail.trim(),
 			roles: draftData.value.roles as string[],
-			language: draftData.value.language,
+			language: backendLanguage, // 发送后端格式：'en' 或 'zh-CN'
 			region: draftData.value.region,
 			newPassword: '',
 			oldPassword: '',
@@ -337,26 +363,34 @@ export function useSettingsForm({ t, locale }: UseSettingsFormOptions) {
 
 		try {
 			await updateUserProfile(nextData)
+
+			// 将后端返回的语言值转换为前端格式
+			const frontendLanguage = backendLanguage
+				? backendToFrontendLanguage[backendLanguage as 'en' | 'zh-CN']
+				: ''
+
 			const settingsData: SettingsData = {
 				firstName: nextData.firstName,
 				lastName: nextData.lastName,
 				username: nextData.username,
 				email: nextData.email,
 				roles: nextData.roles as RoleValue[],
-				language: nextData.language as LanguageValue | '',
+				language: frontendLanguage,
 				region: nextData.region as any
 			}
 			sourceData.value = cloneSettingsData(settingsData)
 			console.log(nextData)
 
-			if (nextData.language && nextData.language !== previousLanguage) {
-				syncAppLanguage(nextData.language as LanguageValue)
+			if (frontendLanguage && frontendLanguage !== previousLanguage) {
+				syncAppLanguage(frontendLanguage as LanguageValue)
 			}
 
 			draftData.value = cloneSettingsData(sourceData.value)
 			securityDraft.value = createEmptySecurityDraft()
 			resetEmailVerificationState()
 			isEditing.value = false
+			isEditingEmail.value = false
+			isEditingPassword.value = false
 			ElMessage.success(t('Settings.messages.settingsUpdated'))
 		} catch (error) {
 			console.warn(error)