4f1ad82345
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114 lines
3.6 KiB
Dart
114 lines
3.6 KiB
Dart
import 'dart:io';
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import 'package:dio/dio.dart';
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import 'local_database.dart';
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/// API 基础地址
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const String baseUrl = 'http://localhost:5000'; // adb reverse 或同WiFi直连时改为PC的IP
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/// Dio HTTP 客户端封装——带 token 注入、401 自动刷新
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class ApiClient {
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final Dio _dio;
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final LocalDatabase _db;
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ApiClient({required LocalDatabase db})
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: _db = db,
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_dio = Dio(BaseOptions(
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baseUrl: baseUrl,
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connectTimeout: const Duration(seconds: 15),
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receiveTimeout: const Duration(seconds: 60),
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headers: {'Content-Type': 'application/json'},
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)) {
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_dio.interceptors.add(_AuthInterceptor(this));
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_dio.interceptors.add(LogInterceptor(requestBody: true, responseBody: false));
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}
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Dio get dio => _dio;
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Future<String?> get accessToken => _db.read('access_token');
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Future<String?> get refreshToken => _db.read('refresh_token');
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Future<void> saveTokens(String access, String refresh) async {
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await _db.write('access_token', access);
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await _db.write('refresh_token', refresh);
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}
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Future<void> clearTokens() async {
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await _db.deleteAll();
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}
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/// 带 token 的 GET 请求
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Future<Response> get(String path, {Map<String, dynamic>? queryParameters}) async {
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return _dio.get(path, queryParameters: queryParameters);
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}
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/// 带 token 的 POST 请求
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Future<Response> post(String path, {dynamic data}) async {
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return _dio.post(path, data: data);
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}
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/// 带 token 的 PUT 请求
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Future<Response> put(String path, {dynamic data}) async {
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return _dio.put(path, data: data);
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}
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/// 带 token 的 DELETE 请求
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Future<Response> delete(String path) async {
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return _dio.delete(path);
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}
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/// 上传文件（multipart），返回文件 URL
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Future<String?> uploadFile(String path, File file, {String fieldName = 'file'}) async {
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final formData = FormData.fromMap({
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fieldName: await MultipartFile.fromFile(file.path, filename: file.path.split('/').last),
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});
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final res = await _dio.post(path, data: formData);
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final data = res.data;
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if (data is Map) {
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return data['url']?.toString() ?? data['data']?['url']?.toString();
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}
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return null;
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}
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}
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/// 认证拦截器：自动注入 token + 401 刷新
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class _AuthInterceptor extends Interceptor {
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final ApiClient _client;
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_AuthInterceptor(this._client);
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@override
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void onRequest(RequestOptions options, RequestInterceptorHandler handler) async {
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if (!options.path.contains('/auth/')) {
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final token = await _client.accessToken;
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if (token != null) {
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options.headers['Authorization'] = 'Bearer $token';
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}
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}
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handler.next(options);
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}
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@override
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void onError(DioException err, ErrorInterceptorHandler handler) async {
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if (err.response?.statusCode == 401) {
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final refresh = await _client.refreshToken;
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if (refresh != null) {
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try {
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final response = await Dio(BaseOptions(baseUrl: baseUrl))
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.post('/api/auth/refresh', data: {'refreshToken': refresh});
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final data = response.data['data'];
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if (data != null) {
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await _client.saveTokens(data['accessToken'], data['refreshToken']);
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final opts = err.requestOptions;
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final token = data['accessToken'];
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opts.headers['Authorization'] = 'Bearer $token';
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final retryResponse = await Dio(BaseOptions(baseUrl: baseUrl)).fetch(opts);
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return handler.resolve(retryResponse);
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}
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} catch (e) { print('[ApiClient] token刷新失败: $e'); }
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}
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await _client.clearTokens();
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}
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handler.next(err);
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}
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}
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