[add] i18n support zh,en

api/app/controllers/__init__.py

@@ -16,6 +16,7 @@ from . import (
     file_controller,
     file_storage_controller,
     home_page_controller,
+    i18n_controller,
     implicit_memory_controller,
     knowledge_controller,
     knowledgeshare_controller,
@@ -94,5 +95,6 @@ manager_router.include_router(memory_working_controller.router)
 manager_router.include_router(file_storage_controller.router)
 manager_router.include_router(ontology_controller.router)
 manager_router.include_router(skill_controller.router)
+manager_router.include_router(i18n_controller.router)
 
 __all__ = ["manager_router"]

api/app/controllers/auth_controller.py

@@ -1,4 +1,5 @@
 from datetime import datetime, timedelta, timezone
+from typing import Callable
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 
@@ -16,6 +17,7 @@ from app.core.exceptions import BusinessException
 from app.core.error_codes import BizCode
 from app.dependencies import get_current_user, oauth2_scheme
 from app.models.user_model import User
+from app.i18n.dependencies import get_translator
 
 # 获取专用日志器
 auth_logger = get_auth_logger()
@@ -26,7 +28,8 @@ router = APIRouter(tags=["Authentication"])
 @router.post("/token", response_model=ApiResponse)
 async def login_for_access_token(
     form_data: TokenRequest,
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """用户登录获取token"""
     auth_logger.info(f"用户登录请求: {form_data.email}")
@@ -40,10 +43,10 @@ async def login_for_access_token(
         invite_info = workspace_service.validate_invite_token(db, form_data.invite)
         
         if not invite_info.is_valid:
-            raise BusinessException("邀请码无效或已过期", code=BizCode.BAD_REQUEST)
+            raise BusinessException(t("auth.invite.invalid"), code=BizCode.BAD_REQUEST)
         
         if invite_info.email != form_data.email:
-            raise BusinessException("邀请邮箱与登录邮箱不匹配", code=BizCode.BAD_REQUEST)        
+            raise BusinessException(t("auth.invite.email_mismatch"), code=BizCode.BAD_REQUEST)        
         auth_logger.info(f"邀请码验证成功: workspace={invite_info.workspace_name}")
         try:
             # 尝试认证用户
@@ -69,7 +72,7 @@ async def login_for_access_token(
             elif e.code == BizCode.PASSWORD_ERROR:
                 # 用户存在但密码错误
                 auth_logger.warning(f"接受邀请失败，密码验证错误: {form_data.email}")
-                raise BusinessException("接受邀请失败，密码验证错误", BizCode.LOGIN_FAILED)
+                raise BusinessException(t("auth.invite.password_verification_failed"), BizCode.LOGIN_FAILED)
             else:
                 # 其他认证失败情况，直接抛出
                 raise
@@ -82,7 +85,7 @@ async def login_for_access_token(
         except BusinessException as e:
             
             # 其他认证失败情况，直接抛出
-            raise BusinessException(e.message,BizCode.LOGIN_FAILED)
+            raise BusinessException(e.message, BizCode.LOGIN_FAILED)
 
     # 创建 tokens
     access_token, access_token_id = security.create_access_token(subject=user.id)
@@ -110,14 +113,15 @@ async def login_for_access_token(
             expires_at=access_expires_at,
             refresh_expires_at=refresh_expires_at
         ),
-        msg="登录成功"
+        msg=t("auth.login.success")
     )
 
 
 @router.post("/refresh", response_model=ApiResponse)
 async def refresh_token(
     refresh_request: RefreshTokenRequest,
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """刷新token"""
     auth_logger.info("收到token刷新请求")
@@ -125,18 +129,18 @@ async def refresh_token(
     # 验证 refresh token
     userId = security.verify_token(refresh_request.refresh_token, "refresh")
     if not userId:
-        raise BusinessException("无效的refresh token", code=BizCode.TOKEN_INVALID)
+        raise BusinessException(t("auth.token.invalid_refresh_token"), code=BizCode.TOKEN_INVALID)
     
     # 检查用户是否存在
     user = auth_service.get_user_by_id(db, userId)
     if not user:
-        raise BusinessException("用户不存在", code=BizCode.USER_NOT_FOUND)
+        raise BusinessException(t("auth.user.not_found"), code=BizCode.USER_NOT_FOUND)
     
     # 检查 refresh token 黑名单
     if settings.ENABLE_SINGLE_SESSION:
         refresh_token_id = security.get_token_id(refresh_request.refresh_token)
         if refresh_token_id and await SessionService.is_token_blacklisted(refresh_token_id):
-            raise BusinessException("Refresh token已失效", code=BizCode.TOKEN_BLACKLISTED)
+            raise BusinessException(t("auth.token.refresh_token_blacklisted"), code=BizCode.TOKEN_BLACKLISTED)
     
     # 生成新 tokens
     new_access_token, new_access_token_id = security.create_access_token(subject=user.id)
@@ -167,7 +171,7 @@ async def refresh_token(
             expires_at=access_expires_at,
             refresh_expires_at=refresh_expires_at
         ),
-        msg="token刷新成功"
+        msg=t("auth.token.refresh_success")
     )
 
 
@@ -175,14 +179,15 @@ async def refresh_token(
 async def logout(
     token: str = Depends(oauth2_scheme),
     current_user: User = Depends(get_current_user),
-    db: Session = Depends(get_db)
+    db: Session = Depends(get_db),
+    t: Callable = Depends(get_translator)
 ):
     """登出当前用户：加入token黑名单并清理会话"""
     auth_logger.info(f"用户 {current_user.username} 请求登出")
     
     token_id = security.get_token_id(token)
     if not token_id:
-        raise BusinessException("无效的access token", code=BizCode.TOKEN_INVALID)
+        raise BusinessException(t("auth.token.invalid"), code=BizCode.TOKEN_INVALID)
 
     # 加入黑名单
     await SessionService.blacklist_token(token_id)
@@ -192,5 +197,5 @@ async def logout(
         await SessionService.clear_user_session(current_user.username)
 
     auth_logger.info(f"用户 {current_user.username} 登出成功")
-    return success(msg="登出成功")
+    return success(msg=t("auth.logout.success"))
 

api/app/controllers/i18n_controller.py

@@ -0,0 +1,833 @@
+"""
+I18n Management API Controller
+
+This module provides management APIs for:
+- Language management (list, get, add, update languages)
+- Translation management (get, update, reload translations)
+"""
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+from typing import Callable, Optional
+
+from app.core.logging_config import get_api_logger
+from app.core.response_utils import success
+from app.db import get_db
+from app.dependencies import get_current_user, get_current_superuser
+from app.i18n.dependencies import get_translator
+from app.i18n.service import get_translation_service
+from app.models.user_model import User
+from app.schemas.i18n_schema import (
+    LanguageInfo,
+    LanguageListResponse,
+    LanguageCreateRequest,
+    LanguageUpdateRequest,
+    TranslationResponse,
+    TranslationUpdateRequest,
+    MissingTranslationsResponse,
+    ReloadResponse
+)
+from app.schemas.response_schema import ApiResponse
+
+api_logger = get_api_logger()
+
+router = APIRouter(
+    prefix="/i18n",
+    tags=["I18n Management"],
+)
+
+
+# ============================================================================
+# Language Management APIs
+# ============================================================================
+
+@router.get("/languages", response_model=ApiResponse)
+def get_languages(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get list of all supported languages.
+    
+    Returns:
+        List of language information including code, name, and status
+    """
+    api_logger.info(f"Get languages request from user: {current_user.username}")
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Get available locales from translation service
+    available_locales = translation_service.get_available_locales()
+    
+    # Build language info list
+    languages = []
+    for locale in available_locales:
+        is_default = locale == settings.I18N_DEFAULT_LANGUAGE
+        is_enabled = locale in settings.I18N_SUPPORTED_LANGUAGES
+        
+        # Get native names
+        native_names = {
+            "zh": "中文（简体）",
+            "en": "English",
+            "ja": "日本語",
+            "ko": "한국어",
+            "fr": "Français",
+            "de": "Deutsch",
+            "es": "Español"
+        }
+        
+        language_info = LanguageInfo(
+            code=locale,
+            name=f"{locale.upper()}",
+            native_name=native_names.get(locale, locale),
+            is_enabled=is_enabled,
+            is_default=is_default
+        )
+        languages.append(language_info)
+    
+    response = LanguageListResponse(languages=languages)
+    
+    api_logger.info(f"Returning {len(languages)} languages")
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.get("/languages/{locale}", response_model=ApiResponse)
+def get_language(
+    locale: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get information about a specific language.
+    
+    Args:
+        locale: Language code (e.g., 'zh', 'en')
+        
+    Returns:
+        Language information
+    """
+    api_logger.info(f"Get language info request: locale={locale}, user={current_user.username}")
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Build language info
+    is_default = locale == settings.I18N_DEFAULT_LANGUAGE
+    is_enabled = locale in settings.I18N_SUPPORTED_LANGUAGES
+    
+    native_names = {
+        "zh": "中文（简体）",
+        "en": "English",
+        "ja": "日本語",
+        "ko": "한국어",
+        "fr": "Français",
+        "de": "Deutsch",
+        "es": "Español"
+    }
+    
+    language_info = LanguageInfo(
+        code=locale,
+        name=f"{locale.upper()}",
+        native_name=native_names.get(locale, locale),
+        is_enabled=is_enabled,
+        is_default=is_default
+    )
+    
+    api_logger.info(f"Returning language info for: {locale}")
+    return success(data=language_info.dict(), msg=t("common.success.retrieved"))
+
+
+@router.post("/languages", response_model=ApiResponse)
+def add_language(
+    request: LanguageCreateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Add a new language (admin only).
+    
+    Note: This endpoint validates the request but actual language addition
+    requires creating translation files in the locales directory.
+    
+    Args:
+        request: Language creation request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Add language request: code={request.code}, admin={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    # Check if language already exists
+    available_locales = translation_service.get_available_locales()
+    if request.code in available_locales:
+        api_logger.warning(f"Language already exists: {request.code}")
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=t("i18n.language.already_exists", locale=request.code)
+        )
+    
+    # Note: Actual language addition requires creating translation files
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Language addition validated: {request.code}. "
+        "Translation files need to be created manually."
+    )
+    
+    return success(
+        msg=t(
+            "i18n.language.add_instructions",
+            locale=request.code,
+            dir=settings.I18N_CORE_LOCALES_DIR
+        )
+    )
+
+
+@router.put("/languages/{locale}", response_model=ApiResponse)
+def update_language(
+    locale: str,
+    request: LanguageUpdateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Update language configuration (admin only).
+    
+    Note: This endpoint validates the request but actual configuration
+    changes require updating environment variables or config files.
+    
+    Args:
+        locale: Language code
+        request: Language update request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Update language request: locale={locale}, admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if language exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Note: Actual configuration changes require updating settings
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Language update validated: {locale}. "
+        "Configuration changes require environment variable updates."
+    )
+    
+    return success(msg=t("i18n.language.update_instructions", locale=locale))
+
+
+# ============================================================================
+# Translation Management APIs
+# ============================================================================
+
+@router.get("/translations", response_model=ApiResponse)
+def get_all_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get all translations for all or specific locale.
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        All translations organized by locale and namespace
+    """
+    api_logger.info(
+        f"Get all translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    if locale:
+        # Get translations for specific locale
+        available_locales = translation_service.get_available_locales()
+        if locale not in available_locales:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=t("i18n.language.not_found", locale=locale)
+            )
+        
+        translations = {
+            locale: translation_service._cache.get(locale, {})
+        }
+    else:
+        # Get all translations
+        translations = translation_service._cache
+    
+    response = TranslationResponse(translations=translations)
+    
+    api_logger.info(f"Returning translations for: {locale or 'all locales'}")
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.get("/translations/{locale}", response_model=ApiResponse)
+def get_locale_translations(
+    locale: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get all translations for a specific locale.
+    
+    Args:
+        locale: Language code
+        
+    Returns:
+        All translations for the locale organized by namespace
+    """
+    api_logger.info(
+        f"Get locale translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    translations = translation_service._cache.get(locale, {})
+    
+    api_logger.info(f"Returning {len(translations)} namespaces for locale: {locale}")
+    return success(data={"locale": locale, "translations": translations}, msg=t("common.success.retrieved"))
+
+
+@router.get("/translations/{locale}/{namespace}", response_model=ApiResponse)
+def get_namespace_translations(
+    locale: str,
+    namespace: str,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get translations for a specific namespace in a locale.
+    
+    Args:
+        locale: Language code
+        namespace: Translation namespace (e.g., 'common', 'auth')
+        
+    Returns:
+        Translations for the specified namespace
+    """
+    api_logger.info(
+        f"Get namespace translations request: locale={locale}, "
+        f"namespace={namespace}, user={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Get namespace translations
+    locale_translations = translation_service._cache.get(locale, {})
+    namespace_translations = locale_translations.get(namespace, {})
+    
+    if not namespace_translations:
+        api_logger.warning(f"Namespace not found: {namespace} in locale: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.namespace.not_found", namespace=namespace, locale=locale)
+        )
+    
+    api_logger.info(
+        f"Returning translations for namespace: {namespace} in locale: {locale}"
+    )
+    return success(
+        data={
+            "locale": locale,
+            "namespace": namespace,
+            "translations": namespace_translations
+        },
+        msg=t("common.success.retrieved")
+    )
+
+
+@router.put("/translations/{locale}/{key:path}", response_model=ApiResponse)
+def update_translation(
+    locale: str,
+    key: str,
+    request: TranslationUpdateRequest,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Update a single translation (admin only).
+    
+    Note: This endpoint validates the request but actual translation updates
+    require modifying translation files in the locales directory.
+    
+    Args:
+        locale: Language code
+        key: Translation key (format: "namespace.key.subkey")
+        request: Translation update request
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Update translation request: locale={locale}, key={key}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    
+    # Check if locale exists
+    available_locales = translation_service.get_available_locales()
+    if locale not in available_locales:
+        api_logger.warning(f"Language not found: {locale}")
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=t("i18n.language.not_found", locale=locale)
+        )
+    
+    # Validate key format
+    if "." not in key:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=t("i18n.translation.invalid_key_format", key=key)
+        )
+    
+    # Note: Actual translation updates require modifying JSON files
+    # This endpoint serves as a validation and documentation point
+    
+    api_logger.info(
+        f"Translation update validated: {locale}/{key}. "
+        "Translation files need to be updated manually."
+    )
+    
+    return success(
+        msg=t("i18n.translation.update_instructions", locale=locale, key=key)
+    )
+
+
+@router.get("/translations/missing", response_model=ApiResponse)
+def get_missing_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_user)
+):
+    """
+    Get list of missing translations.
+    
+    Compares translations across locales to find missing keys.
+    
+    Args:
+        locale: Optional locale to check (defaults to checking all non-default locales)
+        
+    Returns:
+        List of missing translation keys
+    """
+    api_logger.info(
+        f"Get missing translations request: locale={locale}, user={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    translation_service = get_translation_service()
+    
+    default_locale = settings.I18N_DEFAULT_LANGUAGE
+    available_locales = translation_service.get_available_locales()
+    
+    # Get default locale translations as reference
+    default_translations = translation_service._cache.get(default_locale, {})
+    
+    # Collect all keys from default locale
+    def collect_keys(data, prefix=""):
+        keys = []
+        for key, value in data.items():
+            full_key = f"{prefix}.{key}" if prefix else key
+            if isinstance(value, dict):
+                keys.extend(collect_keys(value, full_key))
+            else:
+                keys.append(full_key)
+        return keys
+    
+    default_keys = set()
+    for namespace, translations in default_translations.items():
+        namespace_keys = collect_keys(translations, namespace)
+        default_keys.update(namespace_keys)
+    
+    # Find missing keys in target locale(s)
+    missing_by_locale = {}
+    
+    target_locales = [locale] if locale else [
+        loc for loc in available_locales if loc != default_locale
+    ]
+    
+    for target_locale in target_locales:
+        if target_locale not in available_locales:
+            continue
+        
+        target_translations = translation_service._cache.get(target_locale, {})
+        target_keys = set()
+        
+        for namespace, translations in target_translations.items():
+            namespace_keys = collect_keys(translations, namespace)
+            target_keys.update(namespace_keys)
+        
+        missing_keys = default_keys - target_keys
+        if missing_keys:
+            missing_by_locale[target_locale] = sorted(list(missing_keys))
+    
+    response = MissingTranslationsResponse(missing_translations=missing_by_locale)
+    
+    total_missing = sum(len(keys) for keys in missing_by_locale.values())
+    api_logger.info(f"Found {total_missing} missing translations across {len(missing_by_locale)} locales")
+    
+    return success(data=response.dict(), msg=t("common.success.retrieved"))
+
+
+@router.post("/reload", response_model=ApiResponse)
+def reload_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Trigger hot reload of translation files (admin only).
+    
+    Args:
+        locale: Optional locale to reload (defaults to reloading all locales)
+        
+    Returns:
+        Reload status and statistics
+    """
+    api_logger.info(
+        f"Reload translations request: locale={locale or 'all'}, "
+        f"admin={current_user.username}"
+    )
+    
+    from app.core.config import settings
+    
+    if not settings.I18N_ENABLE_HOT_RELOAD:
+        api_logger.warning("Hot reload is disabled in configuration")
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=t("i18n.reload.disabled")
+        )
+    
+    translation_service = get_translation_service()
+    
+    try:
+        # Reload translations
+        translation_service.reload(locale)
+        
+        # Get statistics
+        available_locales = translation_service.get_available_locales()
+        reloaded_locales = [locale] if locale else available_locales
+        
+        response = ReloadResponse(
+            success=True,
+            reloaded_locales=reloaded_locales,
+            total_locales=len(available_locales)
+        )
+        
+        api_logger.info(
+            f"Successfully reloaded translations for: {', '.join(reloaded_locales)}"
+        )
+        
+        return success(data=response.dict(), msg=t("i18n.reload.success"))
+        
+    except Exception as e:
+        api_logger.error(f"Failed to reload translations: {str(e)}")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=t("i18n.reload.failed", error=str(e))
+        )
+
+
+# ============================================================================
+# Performance Monitoring APIs
+# ============================================================================
+
+@router.get("/metrics", response_model=ApiResponse)
+def get_metrics(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get i18n performance metrics (admin only).
+    
+    Returns:
+        Performance metrics including:
+        - Request counts
+        - Missing translations
+        - Timing statistics
+        - Locale usage
+        - Error counts
+    """
+    api_logger.info(f"Get metrics request: admin={current_user.username}")
+    
+    translation_service = get_translation_service()
+    metrics = translation_service.get_metrics_summary()
+    
+    api_logger.info("Returning i18n metrics")
+    return success(data=metrics, msg=t("common.success.retrieved"))
+
+
+@router.get("/metrics/cache", response_model=ApiResponse)
+def get_cache_stats(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get cache statistics (admin only).
+    
+    Returns:
+        Cache statistics including:
+        - Hit/miss rates
+        - LRU cache performance
+        - Loaded locales
+        - Memory usage
+    """
+    api_logger.info(f"Get cache stats request: admin={current_user.username}")
+    
+    translation_service = get_translation_service()
+    cache_stats = translation_service.get_cache_stats()
+    memory_usage = translation_service.get_memory_usage()
+    
+    data = {
+        "cache": cache_stats,
+        "memory": memory_usage
+    }
+    
+    api_logger.info("Returning cache statistics")
+    return success(data=data, msg=t("common.success.retrieved"))
+
+
+@router.get("/metrics/prometheus")
+def get_prometheus_metrics(
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get metrics in Prometheus format (admin only).
+    
+    Returns:
+        Prometheus-formatted metrics as plain text
+    """
+    api_logger.info(f"Get Prometheus metrics request: admin={current_user.username}")
+    
+    from app.i18n.metrics import get_metrics
+    metrics = get_metrics()
+    prometheus_output = metrics.export_prometheus()
+    
+    from fastapi.responses import PlainTextResponse
+    return PlainTextResponse(content=prometheus_output)
+
+
+@router.post("/metrics/reset", response_model=ApiResponse)
+def reset_metrics(
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Reset all metrics (admin only).
+    
+    Returns:
+        Success message
+    """
+    api_logger.info(f"Reset metrics request: admin={current_user.username}")
+    
+    from app.i18n.metrics import get_metrics
+    metrics = get_metrics()
+    metrics.reset()
+    
+    translation_service = get_translation_service()
+    translation_service.cache.reset_stats()
+    
+    api_logger.info("Metrics reset completed")
+    return success(msg=t("i18n.metrics.reset_success"))
+
+
+# ============================================================================
+# Missing Translation Logging and Reporting APIs
+# ============================================================================
+
+@router.get("/logs/missing", response_model=ApiResponse)
+def get_missing_translation_logs(
+    locale: Optional[str] = None,
+    limit: Optional[int] = 100,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Get missing translation logs (admin only).
+    
+    Returns logged missing translations with context information.
+    
+    Args:
+        locale: Optional locale filter
+        limit: Maximum number of entries to return (default: 100)
+        
+    Returns:
+        Missing translation logs with context
+    """
+    api_logger.info(
+        f"Get missing translation logs request: locale={locale}, "
+        f"limit={limit}, admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Get missing translations
+    missing_translations = translation_logger.get_missing_translations(locale)
+    
+    # Get missing with context
+    missing_with_context = translation_logger.get_missing_with_context(locale, limit)
+    
+    # Get statistics
+    statistics = translation_logger.get_statistics()
+    
+    data = {
+        "missing_translations": missing_translations,
+        "recent_context": missing_with_context,
+        "statistics": statistics
+    }
+    
+    api_logger.info(
+        f"Returning {statistics['total_missing']} missing translations"
+    )
+    return success(data=data, msg=t("common.success.retrieved"))
+
+
+@router.get("/logs/missing/report", response_model=ApiResponse)
+def generate_missing_translation_report(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Generate a comprehensive missing translation report (admin only).
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        Comprehensive report with missing translations and statistics
+    """
+    api_logger.info(
+        f"Generate missing translation report request: locale={locale}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Generate report
+    report = translation_logger.generate_report(locale)
+    
+    api_logger.info(
+        f"Generated report with {report['total_missing']} missing translations"
+    )
+    return success(data=report, msg=t("common.success.retrieved"))
+
+
+@router.post("/logs/missing/export", response_model=ApiResponse)
+def export_missing_translations(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Export missing translations to JSON file (admin only).
+    
+    Args:
+        locale: Optional locale filter
+        
+    Returns:
+        Export status and file path
+    """
+    api_logger.info(
+        f"Export missing translations request: locale={locale}, "
+        f"admin={current_user.username}"
+    )
+    
+    from datetime import datetime
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Generate filename with timestamp
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    locale_suffix = f"_{locale}" if locale else "_all"
+    output_file = f"logs/i18n/missing_translations{locale_suffix}_{timestamp}.json"
+    
+    # Export to file
+    translation_logger.export_to_json(output_file)
+    
+    api_logger.info(f"Missing translations exported to: {output_file}")
+    return success(
+        data={"file_path": output_file},
+        msg=t("i18n.logs.export_success", file=output_file)
+    )
+
+
+@router.delete("/logs/missing", response_model=ApiResponse)
+def clear_missing_translation_logs(
+    locale: Optional[str] = None,
+    t: Callable = Depends(get_translator),
+    current_user: User = Depends(get_current_superuser)
+):
+    """
+    Clear missing translation logs (admin only).
+    
+    Args:
+        locale: Optional locale to clear (clears all if not specified)
+        
+    Returns:
+        Success message
+    """
+    api_logger.info(
+        f"Clear missing translation logs request: locale={locale or 'all'}, "
+        f"admin={current_user.username}"
+    )
+    
+    translation_service = get_translation_service()
+    translation_logger = translation_service.translation_logger
+    
+    # Clear logs
+    translation_logger.clear(locale)
+    
+    api_logger.info(f"Cleared missing translation logs for: {locale or 'all locales'}")
+    return success(msg=t("i18n.logs.clear_success"))

api/app/controllers/user_controller.py

@@ -1,6 +1,7 @@
 from fastapi import APIRouter, Depends
 from sqlalchemy.orm import Session
 import uuid
+from typing import Callable
 
 from app.core.error_codes import BizCode
 from app.core.exceptions import BusinessException
@@ -19,6 +20,7 @@ from app.services import user_service
 from app.core.logging_config import get_api_logger
 from app.core.response_utils import success
 from app.core.security import verify_password
+from app.i18n.dependencies import get_translator
 
 # 获取API专用日志器
 api_logger = get_api_logger()
@@ -33,7 +35,8 @@ router = APIRouter(
 def create_superuser(
     user: user_schema.UserCreate,
     db: Session = Depends(get_db),
-    current_superuser: User = Depends(get_current_superuser)
+    current_superuser: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """创建超级管理员（仅超级管理员可访问）"""
     api_logger.info(f"超级管理员创建请求: {user.username}, email: {user.email}")
@@ -42,7 +45,7 @@ def create_superuser(
     api_logger.info(f"超级管理员创建成功: {result.username} (ID: {result.id})")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="超级管理员创建成功")
+    return success(data=result_schema, msg=t("users.create.superuser_success"))
 
 
 @router.delete("/{user_id}", response_model=ApiResponse)
@@ -50,6 +53,7 @@ def delete_user(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """停用用户（软删除）"""
     api_logger.info(f"用户停用请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -57,13 +61,14 @@ def delete_user(
         db=db, user_id_to_deactivate=user_id, current_user=current_user
     )
     api_logger.info(f"用户停用成功: {result.username} (ID: {result.id})")
-    return success(msg="用户停用成功")
+    return success(msg=t("users.delete.deactivate_success"))
 
 @router.post("/{user_id}/activate", response_model=ApiResponse)
 def activate_user(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """激活用户"""
     api_logger.info(f"用户激活请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -74,13 +79,14 @@ def activate_user(
     api_logger.info(f"用户激活成功: {result.username} (ID: {result.id})")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="用户激活成功")
+    return success(data=result_schema, msg=t("users.activate.success"))
 
 
 @router.get("", response_model=ApiResponse)
 def get_current_user_info(
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """获取当前用户信息"""
     api_logger.info(f"当前用户信息请求: {current_user.username}")
@@ -105,7 +111,7 @@ def get_current_user_info(
                 break
     
     api_logger.info(f"当前用户信息获取成功: {result.username}, 角色: {result_schema.role}, 工作空间: {result_schema.current_workspace_name}")
-    return success(data=result_schema, msg="用户信息获取成功")
+    return success(data=result_schema, msg=t("users.info.get_success"))
 
 
 @router.get("/superusers", response_model=ApiResponse)
@@ -113,6 +119,7 @@ def get_tenant_superusers(
     include_inactive: bool = False,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """获取当前租户下的超管账号列表（仅超级管理员可访问）"""
     api_logger.info(f"获取租户超管列表请求: {current_user.username}")
@@ -125,7 +132,7 @@ def get_tenant_superusers(
     api_logger.info(f"租户超管列表获取成功: count={len(superusers)}")
     
     superusers_schema = [user_schema.User.model_validate(u) for u in superusers]
-    return success(data=superusers_schema, msg="租户超管列表获取成功")
+    return success(data=superusers_schema, msg=t("users.list.superusers_success"))
 
 
 
@@ -134,6 +141,7 @@ def get_user_info_by_id(
     user_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """根据用户ID获取用户信息"""
     api_logger.info(f"获取用户信息请求: user_id={user_id}, 操作者: {current_user.username}")
@@ -144,7 +152,7 @@ def get_user_info_by_id(
     api_logger.info(f"用户信息获取成功: {result.username}")
     
     result_schema = user_schema.User.model_validate(result)
-    return success(data=result_schema, msg="用户信息获取成功")
+    return success(data=result_schema, msg=t("users.info.get_success"))
 
 
 @router.put("/change-password", response_model=ApiResponse)
@@ -152,6 +160,7 @@ async def change_password(
     request: ChangePasswordRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """修改当前用户密码"""
     api_logger.info(f"用户密码修改请求: {current_user.username}")
@@ -164,7 +173,7 @@ async def change_password(
         current_user=current_user
     )
     api_logger.info(f"用户密码修改成功: {current_user.username}")
-    return success(msg="密码修改成功")
+    return success(msg=t("auth.password.change_success"))
 
 
 @router.put("/admin/change-password", response_model=ApiResponse)
@@ -172,6 +181,7 @@ async def admin_change_password(
     request: AdminChangePasswordRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    t: Callable = Depends(get_translator)
 ):
     """超级管理员修改指定用户的密码"""
     api_logger.info(f"管理员密码修改请求: 管理员 {current_user.username} 修改用户 {request.user_id}")
@@ -186,16 +196,17 @@ async def admin_change_password(
     # 根据是否生成了随机密码来构造响应
     if request.new_password:
         api_logger.info(f"管理员密码修改成功: 用户 {request.user_id}")
-        return success(msg="密码修改成功")
+        return success(msg=t("auth.password.change_success"))
     else:
         api_logger.info(f"管理员密码重置成功: 用户 {request.user_id}, 随机密码已生成")
-        return success(data=generated_password, msg="密码重置成功")
+        return success(data=generated_password, msg=t("auth.password.reset_success"))
 
 
 @router.post("/verify_pwd", response_model=ApiResponse)
 def verify_pwd(
     request: VerifyPasswordRequest,
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """验证当前用户密码"""
     api_logger.info(f"用户验证密码请求: {current_user.username}")
@@ -203,8 +214,8 @@ def verify_pwd(
     is_valid = verify_password(request.password, current_user.hashed_password)
     api_logger.info(f"用户密码验证结果: {current_user.username}, valid={is_valid}")
     if not is_valid:
-        raise BusinessException("密码验证失败", code=BizCode.VALIDATION_FAILED)
-    return success(data={"valid": is_valid}, msg="验证完成")
+        raise BusinessException(t("users.errors.password_verification_failed"), code=BizCode.VALIDATION_FAILED)
+    return success(data={"valid": is_valid}, msg=t("common.success.retrieved"))
 
 
 @router.post("/send-email-code", response_model=ApiResponse)
@@ -212,6 +223,7 @@ async def send_email_code(
     request: SendEmailCodeRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """发送邮箱验证码"""
     api_logger.info(f"用户请求发送邮箱验证码: {current_user.username}, email={request.email}")
@@ -219,7 +231,7 @@ async def send_email_code(
     await user_service.send_email_code_method(db=db, email=request.email, user_id=current_user.id)
     
     api_logger.info(f"邮箱验证码已发送: {current_user.username}")
-    return success(msg="验证码已发送到您的邮箱，请查收")
+    return success(msg=t("users.email.code_sent"))
 
 
 @router.put("/change-email", response_model=ApiResponse)
@@ -227,6 +239,7 @@ async def change_email(
     request: VerifyEmailCodeRequest,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
 ):
     """验证验证码并修改邮箱"""
     api_logger.info(f"用户修改邮箱: {current_user.username}, new_email={request.new_email}")
@@ -239,4 +252,51 @@ async def change_email(
     )
     
     api_logger.info(f"用户邮箱修改成功: {current_user.username}")
-    return success(msg="邮箱修改成功")
+    return success(msg=t("users.email.change_success"))
+
+
+
+@router.get("/me/language", response_model=ApiResponse)
+def get_current_user_language(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
+):
+    """获取当前用户的语言偏好"""
+    api_logger.info(f"获取用户语言偏好: {current_user.username}")
+    
+    language = user_service.get_user_language_preference(
+        db=db,
+        user_id=current_user.id,
+        current_user=current_user
+    )
+    
+    api_logger.info(f"用户语言偏好获取成功: {current_user.username}, language={language}")
+    return success(
+        data=user_schema.LanguagePreferenceResponse(language=language),
+        msg=t("users.language.get_success")
+    )
+
+
+@router.put("/me/language", response_model=ApiResponse)
+def update_current_user_language(
+    request: user_schema.LanguagePreferenceRequest,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+    t: Callable = Depends(get_translator)
+):
+    """设置当前用户的语言偏好"""
+    api_logger.info(f"更新用户语言偏好: {current_user.username}, language={request.language}")
+    
+    updated_user = user_service.update_user_language_preference(
+        db=db,
+        user_id=current_user.id,
+        language=request.language,
+        current_user=current_user
+    )
+    
+    api_logger.info(f"用户语言偏好更新成功: {current_user.username}, language={request.language}")
+    return success(
+        data=user_schema.LanguagePreferenceResponse(language=updated_user.preferred_language),
+        msg=t("users.language.update_success")
+    )

api/app/controllers/workspace_controller.py

@@ -14,6 +14,12 @@ from app.dependencies import (
     get_current_user,
     workspace_access_guard,
 )
+from app.i18n.dependencies import get_current_language, get_translator
+from app.i18n.serializers import (
+    WorkspaceSerializer,
+    WorkspaceMemberSerializer,
+    WorkspaceInviteSerializer
+)
 from app.models.tenant_model import Tenants
 from app.models.user_model import User
 from app.models.workspace_model import InviteStatus
@@ -65,7 +71,9 @@ def get_workspaces(
     include_current: bool = Query(True, description="是否包含当前工作空间"),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
-    current_tenant: Tenants = Depends(get_current_tenant)
+    current_tenant: Tenants = Depends(get_current_tenant),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取当前租户下用户参与的所有工作空间
 
@@ -88,8 +96,13 @@ def get_workspaces(
         )
 
     api_logger.info(f"成功获取 {len(workspaces)} 个工作空间")
-    workspaces_schema = [WorkspaceResponse.model_validate(w) for w in workspaces]
-    return success(data=workspaces_schema, msg="工作空间列表获取成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    workspaces_data = [WorkspaceResponse.model_validate(w).model_dump() for w in workspaces]
+    workspaces_i18n = serializer.serialize_list(workspaces_data, language)
+    
+    return success(data=workspaces_i18n, msg=t("workspace.list_retrieved"))
 
 
 @router.post("", response_model=ApiResponse)
@@ -98,6 +111,8 @@ def create_workspace(
     language_type: str = Header(default="zh", alias="X-Language-Type"),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_superuser),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """创建新的工作空间"""
     from app.core.language_utils import get_language_from_header
@@ -118,8 +133,13 @@ def create_workspace(
         f"工作空间创建成功 - 名称: {workspace.name}, ID: {result.id}, "
         f"创建者: {current_user.username}, language={language}"
     )
-    result_schema = WorkspaceResponse.model_validate(result)
-    return success(data=result_schema, msg="工作空间创建成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    result_data = WorkspaceResponse.model_validate(result).model_dump()
+    result_i18n = serializer.serialize(result_data, language)
+    
+    return success(data=result_i18n, msg=t("workspace.created"))
 
 @router.put("", response_model=ApiResponse)
 @cur_workspace_access_guard()
@@ -127,6 +147,8 @@ def update_workspace(
     workspace: WorkspaceUpdate,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """更新工作空间"""
     workspace_id = current_user.current_workspace_id
@@ -139,14 +161,21 @@ def update_workspace(
         user=current_user,
     )
     api_logger.info(f"工作空间更新成功 - ID: {workspace_id}, 用户: {current_user.username}")
-    result_schema = WorkspaceResponse.model_validate(result)
-    return success(data=result_schema, msg="工作空间更新成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceSerializer()
+    result_data = WorkspaceResponse.model_validate(result).model_dump()
+    result_i18n = serializer.serialize(result_data, language)
+    
+    return success(data=result_i18n, msg=t("workspace.updated"))
 
 @router.get("/members", response_model=ApiResponse)
 @cur_workspace_access_guard()
 def get_cur_workspace_members(
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间成员列表（关系序列化）"""
     api_logger.info(f"用户 {current_user.username} 请求获取工作空间 {current_user.current_workspace_id} 的成员列表")
@@ -157,8 +186,14 @@ def get_cur_workspace_members(
         user=current_user,
     )
     api_logger.info(f"工作空间成员列表获取成功 - ID: {current_user.current_workspace_id}, 数量: {len(members)}")
+    
+    # 转换为表格项并使用序列化器添加国际化字段
     table_items = _convert_members_to_table_items(members)
-    return success(data=table_items, msg="工作空间成员列表获取成功")
+    serializer = WorkspaceMemberSerializer()
+    members_data = [item.model_dump() for item in table_items]
+    members_i18n = serializer.serialize_list(members_data, language)
+    
+    return success(data=members_i18n, msg=t("workspace.members.list_retrieved"))
 
 
 @router.put("/members", response_model=ApiResponse)
@@ -168,6 +203,7 @@ def update_workspace_members(
     updates: List[WorkspaceMemberUpdate],
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     workspace_id = current_user.current_workspace_id
     api_logger.info(f"用户 {current_user.username} 请求更新工作空间 {workspace_id} 的成员角色")
@@ -178,7 +214,7 @@ def update_workspace_members(
         user=current_user,
     )
     api_logger.info(f"工作空间成员角色更新成功 - ID: {workspace_id}, 数量: {len(members)}")
-    return success(msg="成员角色更新成功")
+    return success(msg=t("workspace.members.role_updated"))
 
 
 @router.delete("/members/{member_id}", response_model=ApiResponse)
@@ -187,6 +223,7 @@ def delete_workspace_member(
     member_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     workspace_id = current_user.current_workspace_id
     api_logger.info(f"用户 {current_user.username} 请求删除工作空间 {workspace_id} 的成员 {member_id}")
@@ -198,7 +235,7 @@ def delete_workspace_member(
         user=current_user,
     )
     api_logger.info(f"工作空间成员删除成功 - ID: {workspace_id}, 成员: {member_id}")
-    return success(msg="成员删除成功")
+    return success(msg=t("workspace.members.deleted"))
 
 
 # 创建空间协作邀请
@@ -208,6 +245,8 @@ def create_workspace_invite(
     invite_data: WorkspaceInviteCreate,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """创建工作空间邀请"""
     workspace_id = current_user.current_workspace_id
@@ -220,7 +259,12 @@ def create_workspace_invite(
         user=current_user
     )
     api_logger.info(f"工作空间邀请创建成功 - 工作空间: {workspace_id}, 邮箱: {invite_data.email}")
-    return success(data=result, msg="邀请创建成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.created"))
 
 
 @router.get("/invites", response_model=ApiResponse)
@@ -232,6 +276,8 @@ def get_workspace_invites(
     offset: int = Query(0, ge=0),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间邀请列表"""
     workspace_id = current_user.current_workspace_id
@@ -246,18 +292,30 @@ def get_workspace_invites(
         offset=offset
     )
     api_logger.info(f"成功获取 {len(invites)} 个邀请记录")
-    return success(data=invites, msg="邀请列表获取成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    invites_i18n = serializer.serialize_list(invites, language)
+    
+    return success(data=invites_i18n, msg=t("workspace.invites.list_retrieved"))
 
 
 @public_router.get("/invites/validate/{token}", response_model=ApiResponse)
 def get_workspace_invite_info(
     token: str,
     db: Session = Depends(get_db),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """获取工作空间邀请用户信息（无需认证）"""
     result = workspace_service.validate_invite_token(db=db, token=token)
     api_logger.info(f"工作空间邀请验证成功 - 邀请: {token}")
-    return success(data=result, msg="邀请验证成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.validated"))
 
 
 @router.delete("/invites/{invite_id}", response_model=ApiResponse)
@@ -267,6 +325,8 @@ def revoke_workspace_invite(
     invite_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    language: str = Depends(get_current_language),
+    t: callable = Depends(get_translator)
 ):
     """撤销工作空间邀请"""
     workspace_id = current_user.current_workspace_id
@@ -279,7 +339,12 @@ def revoke_workspace_invite(
         user=current_user
     )
     api_logger.info(f"工作空间邀请撤销成功 - 邀请: {invite_id}")
-    return success(data=result, msg="邀请撤销成功")
+    
+    # 使用序列化器添加国际化字段
+    serializer = WorkspaceInviteSerializer()
+    result_i18n = serializer.serialize(result, language)
+    
+    return success(data=result_i18n, msg=t("workspace.invites.revoked"))
 
 # ==================== 公开邀请接口（无需认证） ====================
 
@@ -302,6 +367,7 @@ def switch_workspace(
     workspace_id: uuid.UUID,
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
+    t: callable = Depends(get_translator)
 ):
     """切换工作空间"""
     api_logger.info(f"用户 {current_user.username} 请求切换工作空间为 {workspace_id}")
@@ -312,7 +378,7 @@ def switch_workspace(
         user=current_user,
     )
     api_logger.info(f"成功切换工作空间为 {workspace_id}")
-    return success(msg="工作空间切换成功")
+    return success(msg=t("workspace.switched"))
 
 
 @router.get("/storage", response_model=ApiResponse)
@@ -320,6 +386,7 @@ def switch_workspace(
 def get_workspace_storage_type(
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        t: callable = Depends(get_translator)
 ):
     """获取当前工作空间的存储类型"""
     workspace_id = current_user.current_workspace_id
@@ -331,7 +398,7 @@ def get_workspace_storage_type(
         user=current_user
     )
     api_logger.info(f"成功获取工作空间 {workspace_id} 的存储类型: {storage_type}")
-    return success(data={"storage_type": storage_type}, msg="存储类型获取成功")
+    return success(data={"storage_type": storage_type}, msg=t("workspace.storage.type_retrieved"))
 
 
 @router.get("/workspace_models", response_model=ApiResponse)
@@ -339,6 +406,8 @@ def get_workspace_storage_type(
 def workspace_models_configs(
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        language: str = Depends(get_current_language),
+        t: callable = Depends(get_translator)
 ):
     """获取当前工作空间的模型配置（llm, embedding, rerank）"""
     workspace_id = current_user.current_workspace_id
@@ -354,14 +423,14 @@ def workspace_models_configs(
         api_logger.warning(f"工作空间 {workspace_id} 不存在或无权访问")
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,
-            detail="工作空间不存在或无权访问"
+            detail=t("workspace.not_found")
         )
 
     api_logger.info(
         f"成功获取工作空间 {workspace_id} 的模型配置: "
         f"llm={configs.get('llm')}, embedding={configs.get('embedding')}, rerank={configs.get('rerank')}"
     )
-    return success(data=WorkspaceModelsConfig.model_validate(configs), msg="模型配置获取成功")
+    return success(data=WorkspaceModelsConfig.model_validate(configs), msg=t("workspace.models.config_retrieved"))
 
 
 @router.put("/workspace_models", response_model=ApiResponse)
@@ -370,6 +439,7 @@ def update_workspace_models_configs(
         models_update: WorkspaceModelsUpdate,
         db: Session = Depends(get_db),
         current_user: User = Depends(get_current_user),
+        t: callable = Depends(get_translator)
 ):
     """更新当前工作空间的模型配置（llm, embedding, rerank）"""
     workspace_id = current_user.current_workspace_id
@@ -386,5 +456,5 @@ def update_workspace_models_configs(
         f"成功更新工作空间 {workspace_id} 的模型配置: "
         f"llm={updated_workspace.llm}, embedding={updated_workspace.embedding}, rerank={updated_workspace.rerank}"
     )
-    return success(data=WorkspaceModelsConfig.model_validate(updated_workspace), msg="模型配置更新成功")
+    return success(data=WorkspaceModelsConfig.model_validate(updated_workspace), msg=t("workspace.models.config_updated"))