[feat] add i18n localization: en/zh; add peers display; ui refresh

app/lib/services/auth_service.dart

@@ -0,0 +1,120 @@
+import 'dart:io';
+import 'package:dio/dio.dart';
+import 'package:path_provider/path_provider.dart';
+import 'dart:developer' as developer;
+
+/// 带有ZeroTier认证的HTTP客户端
+class AuthedDioClient {
+  final String _authToken;
+  final Dio _dio;
+  
+  /// 创建带有ZeroTier认证的HTTP客户端
+  /// 
+  /// [authToken] - ZeroTier认证令牌
+  /// [baseUrl] - API基础URL
+  AuthedDioClient(this._authToken, String baseUrl) : _dio = Dio(BaseOptions(
+      baseUrl: 'http://$baseUrl',
+      connectTimeout: const Duration(seconds: 5),
+      receiveTimeout: const Duration(seconds: 5),
+    )) {
+    
+    // 添加拦截器以处理身份验证
+    _dio.interceptors.add(InterceptorsWrapper(
+      onRequest: (options, handler) {
+        // 添加ZeroTier特定认证头
+        options.headers['X-ZT1-Auth'] = _authToken;
+        return handler.next(options);
+      },
+    ));
+  }
+  
+  /// 获取底层的Dio实例
+  Dio get dio => _dio;
+  
+  /// 发送GET请求
+  Future<Response> get(String path) {
+    return _dio.get(path);
+  }
+  
+  /// 发送POST请求
+  Future<Response> post(String path, {dynamic data}) {
+    return _dio.post(path, data: data);
+  }
+  
+  /// 发送PUT请求
+  Future<Response> put(String path, {dynamic data}) {
+    return _dio.put(path, data: data);
+  }
+  
+  /// 发送DELETE请求
+  Future<Response> delete(String path) {
+    return _dio.delete(path);
+  }
+  
+  /// 关闭客户端
+  void close() {
+    _dio.close();
+  }
+}
+
+/// ZeroTier认证服务，用于管理认证和客户端创建
+class AuthService {
+  static const String API_HOST = 'localhost:9993';
+  
+  /// 缓存的HTTP客户端实例
+  AuthedDioClient? _cachedClient;
+  
+  /// 获取已认证的HTTP客户端
+  Future<AuthedDioClient> get client async {
+    // 如果我们已经有缓存的客户端，直接返回
+    if (_cachedClient != null) {
+      return _cachedClient!;
+    }
+    
+    try {
+      final authToken = await _loadAuthToken();
+      _cachedClient = AuthedDioClient(authToken, API_HOST);
+      return _cachedClient!;
+    } catch (e) {
+      developer.log('加载认证令牌失败', error: e.toString());
+      rethrow;
+    }
+  }
+
+  /// 清理资源
+  void dispose() {
+    if (_cachedClient != null) {
+      _cachedClient!.close();
+      _cachedClient = null;
+    }
+  }
+
+  /// 加载认证令牌
+  Future<String> _loadAuthToken() async {
+    try {
+      final path = (await getApplicationDocumentsDirectory()).path;
+      final file = File('$path/run/authtoken');
+      
+      // 检查文件是否存在
+      if (!await file.exists()) {
+        throw FileSystemException('认证令牌文件未找到', file.path);
+      }
+      
+      final token = await file.readAsString();
+      return token.trim();
+    } catch (e) {
+      developer.log('读取认证令牌失败', error: e.toString());
+      rethrow;
+    }
+  }
+}
+
+/// 超时异常类
+class TimeoutException implements Exception {
+  final String message;
+  
+  TimeoutException(this.message);
+  
+  @override
+  String toString() => message;
+}