浅念
8be21b856b
P3 Task 3 移动端（对接 Task 2 api client + 本任务新增的后端契约）： - 登录页实装：账号/密码表单（空值客户端校验）→ api.login（会话自动 持久化）→ pushReplacement /home；错误码本地化（AUTH_INVALID_ CREDENTIALS / AUTH_RATE_LIMITED（含稍后再试文案）/ 网络 / 校验）； 提交加载态防重复提交。 - 修改密码页（设置页入口）：当前/新/确认三字段，客户端校验（≥8 位、 两次一致）→ api.changePassword → toast + pop；成功后本地会话不变 （服务端保留当前会话）；旧密码错误（401 AUTH_INVALID_CREDENTIALS） 显示「当前密码错误」且不触发 401 驱逐。 - 退出登录：设置页按钮 → api.logout 尽力而为 → 清会话 → 清栈回 /login；App 壳 initState 注册 onUnauthorized（业务 401 → 清栈 /login）， 根 navigatorKey 接线；password-change 的 401 豁免会话驱逐（拦截器 豁免集合与令牌附加分离）。 - l10n：新增 16 组 zh/en 文案；错误码 → 文案解析扩展 （core/error_l10n.dart，errorCode→AppLocalizations）。 - 测试：ApiClient.changePassword 单测 ×2（Bearer+请求体；旧密码 401 不驱逐）；widget 测试 ×12（登录 5：空值/成功跳转/凭据错误/限速文案/ 加载禁用；改密 4：过短/不一致/旧密码错误文案+会话保留/成功 toast+pop 且令牌不变；设置 2：改密入口跳转/登出清会话回登录；App 壳 1：401 清栈回 /login）。flutter analyze 0 issue；flutter test 81/81。 Co-Authored-By: Claude Code <noreply@anthropic.com>
525 lines
17 KiB
Dart
525 lines
17 KiB
Dart
/// cn-api 客户端（P3 计划 Task 2）。
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///
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/// - 契约权威：`packages/contracts/openapi.yaml`（servers.url=/v1）。
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/// - Bearer 注入：请求拦截器从 [SessionStore] 读取令牌（登录端点豁免）。
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/// - 401 处理：清空会话并触发 [onUnauthorized]（App 壳注册的监听回调，
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/// 负责跳转 /login）；并发的后续 401 只通知一次，直至新会话写入。
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/// 登录端点自身的 401（凭据错误）与修改密码端点的 401（旧密码错误）
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/// 不是会话过期语义，不触发会话驱逐。
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/// - 错误归一：HTTP 错误体 `{code, message, requestId}` 与网络层失败一律
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/// 抛 [AppException]（码表见 [ErrorCodes]；l10n 文案解析留在 UI 层）。
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library;
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import 'package:dio/dio.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../features/albums/models.dart';
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import '../features/auth/models.dart';
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import '../features/photos/models.dart';
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import '../features/uploads/models.dart';
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import 'app_exception.dart';
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import 'config.dart';
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import 'error_codes.dart';
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import 'models/cursor_page.dart';
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import 'session_store.dart';
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class ApiClient {
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/// [dio] 可注入测试替身（自定义 HttpClientAdapter）；[baseUrl] 缺省
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/// 取 [ApiConfig.baseUrl]（--dart-define API_BASE 覆盖）。
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ApiClient({
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required SessionStore sessionStore,
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String baseUrl = ApiConfig.baseUrl,
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Dio? dio,
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}) : _session = sessionStore {
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_dio = dio ??
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Dio(
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BaseOptions(
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baseUrl: baseUrl,
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connectTimeout: const Duration(seconds: 10),
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sendTimeout: const Duration(seconds: 60),
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receiveTimeout: const Duration(seconds: 60),
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),
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);
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_dio.interceptors.add(
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InterceptorsWrapper(onRequest: _attachSession, onError: _handleError),
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);
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}
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late final Dio _dio;
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final SessionStore _session;
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/// 会话失效（401 驱逐）通知。App 壳启动时注册，例如：
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///
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/// ```dart
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/// ref.read(apiClientProvider).onUnauthorized = () =>
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/// navigatorKey.currentState
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/// ?.pushNamedAndRemoveUntil('/login', (route) => false);
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/// ```
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void Function()? onUnauthorized;
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/// 去重标记：并发 401 只通知一次；登录/续期成功写新会话后复位。
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bool _unauthorizedNotified = false;
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/// 暴露内部 Dio（presign PUT 直传等需要绕过统一封装的场景）。
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Dio get dio => _dio;
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void close({bool force = false}) => _dio.close(force: force);
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/// 登录端点：不附加令牌（未认证端点）。
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static bool _isLoginPath(String path) =>
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path.endsWith('/v1/auth/password');
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/// 401 驱逐豁免：登录（凭据错误）与修改密码（旧密码错误）的 401 都不是
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/// 会话过期语义，不得清会话/触发跳登录；其余端点 401 一律驱逐。
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static bool _evictsSessionOn401(String path) =>
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!_isLoginPath(path) && !path.endsWith('/v1/auth/password-change');
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// ── 拦截器 ──
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Future<void> _attachSession(
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RequestOptions options,
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RequestInterceptorHandler handler,
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) async {
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try {
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if (!_isLoginPath(options.path)) {
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final session = await _session.read();
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if (session != null &&
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session.token.isNotEmpty &&
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!options.headers.containsKey('Authorization')) {
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options.headers['Authorization'] = 'Bearer ${session.token}';
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}
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}
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} on Object {
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// 存储读取失败不阻断请求：按未登录裸发，由服务端 401 裁决。
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} finally {
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handler.next(options);
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}
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}
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Future<void> _handleError(
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DioException e,
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ErrorInterceptorHandler handler,
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) async {
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if (e.response?.statusCode == 401 &&
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_evictsSessionOn401(e.requestOptions.path)) {
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try {
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// 先同步置位去重标记再做异步清除：并发 401 下仅首个触发通知。
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final shouldNotify = !_unauthorizedNotified;
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_unauthorizedNotified = true;
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await _session.clear();
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if (shouldNotify) {
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onUnauthorized?.call();
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}
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} on Object {
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// 会话清除/通知失败不阻断错误传播（下次 401 仍会重试清除）。
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}
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}
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handler.next(e);
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}
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// ── 错误映射 ──
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/// DioException → [AppException]（公开静态，供表驱动单测直接调用）。
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///
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/// 优先取错误响应体 `{code, message, requestId}`（契约
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/// `components.schemas.Error`）；无错误体的响应按契约通用兜底
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/// （openapi.yaml info.description：401→AUTH_TOKEN_EXPIRED、
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/// 500→INTERNAL_ERROR）；网络层失败映射客户端伪码（NETWORK_* 等）。
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static AppException mapDioException(DioException e) {
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final response = e.response;
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if (response != null) {
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final status = response.statusCode ?? 0;
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final data = response.data;
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if (data is Map) {
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final Object? code = data['code'];
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final Object? message = data['message'];
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final Object? requestId = data['requestId'];
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if (code is String && message is String) {
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return AppException(
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code: code,
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message: message,
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requestId: requestId is String ? requestId : null,
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statusCode: status,
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);
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}
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}
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if (status == 401) {
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return const AppException(
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code: ErrorCodes.authTokenExpired,
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message: '未认证或会话已过期',
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statusCode: 401,
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);
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}
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if (status >= 500) {
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return AppException(
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code: ErrorCodes.internalError,
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message: '服务器内部错误',
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statusCode: status,
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);
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}
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return AppException(
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code: ErrorCodes.httpError,
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message: 'HTTP $status 且无契约错误体',
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statusCode: status,
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);
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}
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switch (e.type) {
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case DioExceptionType.connectionTimeout:
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case DioExceptionType.sendTimeout:
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case DioExceptionType.receiveTimeout:
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case DioExceptionType.transformTimeout:
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return const AppException(
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code: ErrorCodes.networkTimeout,
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message: '网络超时',
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);
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case DioExceptionType.cancel:
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return const AppException(
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code: ErrorCodes.cancelled,
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message: '请求已取消',
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);
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case DioExceptionType.connectionError:
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return const AppException(
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code: ErrorCodes.networkError,
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message: '网络连接失败',
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);
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case DioExceptionType.badCertificate:
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return const AppException(
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code: ErrorCodes.networkError,
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message: '证书校验失败',
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);
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case DioExceptionType.badResponse: // 有响应必经上方分支，防御性兜底。
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case DioExceptionType.unknown:
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return AppException(
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code: ErrorCodes.networkError,
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message: e.message ?? '未知网络错误',
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);
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}
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}
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/// 统一发送：DioException 归一为 AppException 后抛出。
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Future<T> _send<T>(Future<T> Function() run) async {
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try {
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return await run();
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} on DioException catch (e) {
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throw mapDioException(e);
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}
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}
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// ── auth（契约 tag: auth）──
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/// operationId `loginWithPassword`（POST /auth/password）。
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///
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/// 成功后将会话（令牌/过期时间/账号回显）写入 [SessionStore]。
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Future<LoginResponse> login(String account, String password) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>(
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'/v1/auth/password',
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data: {'account': account, 'password': password},
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),
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);
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final result = LoginResponse.fromJson(resp.data!);
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await _session.save(
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Session(
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token: result.sessionToken,
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expiresAt: result.expiresAt,
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account: account,
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),
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);
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_unauthorizedNotified = false;
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return result;
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}
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/// operationId `refreshSession`（POST /auth/refresh）：令牌不变，
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/// 滑动续期过期时间——同步回写 [SessionStore]。
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Future<RefreshResponse> refresh() async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>('/v1/auth/refresh'),
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);
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final result = RefreshResponse.fromJson(resp.data!);
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final current = await _session.read();
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if (current != null) {
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await _session.save(
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Session(
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token: current.token,
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expiresAt: result.expiresAt,
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account: current.account,
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),
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);
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}
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return result;
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}
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/// operationId `logout`（POST /auth/logout）。尽力而为：服务端撤销
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/// 失败不阻塞本地退出，本地会话恒被清除。
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Future<void> logout() async {
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try {
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await _send(() => _dio.post<void>('/v1/auth/logout'));
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} on AppException {
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// 尽力而为（计划 Task 3 语义）：错误吞掉，本地照常登出。
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} finally {
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await _session.clear();
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_unauthorizedNotified = false;
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}
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}
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/// operationId `changePassword`（POST /auth/password-change → 204，
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/// P3 Task 3 契约增补）。
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///
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/// 服务端成功后撤销其他会话、**保留当前会话**——本地令牌继续有效，
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/// 无需重登录。旧密码错误 → 401 AUTH_INVALID_CREDENTIALS（不驱逐会话，
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/// 见 [_evictsSessionOn401]）。
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Future<void> changePassword(String oldPassword, String newPassword) =>
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_send(
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() => _dio.post<void>(
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'/v1/auth/password-change',
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data: {'oldPassword': oldPassword, 'newPassword': newPassword},
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),
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);
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// ── albums / members / categories / admin ──
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/// operationId `listAlbums`（GET /albums，游标分页）。
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Future<CursorPage<AlbumSummary>> listAlbums({String? cursor, int? limit}) =>
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_getPage('/v1/albums', AlbumSummary.fromJson, cursor: cursor, limit: limit);
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/// operationId `createAlbum`（POST /albums → 201）。
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Future<Album> createAlbum(AlbumCreateRequest req) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>('/v1/albums', data: req.toJson()),
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);
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return Album.fromJson(resp.data!);
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}
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/// operationId `getAlbum`（GET /albums/{albumId}）。
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Future<Album> getAlbum(String albumId) async {
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final resp = await _send(
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() => _dio.get<Map<String, dynamic>>('/v1/albums/$albumId'),
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);
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return Album.fromJson(resp.data!);
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}
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/// operationId `updateAlbum`（PATCH /albums/{albumId}，部分更新）。
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Future<Album> updateAlbum(String albumId, AlbumUpdateRequest patch) async {
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final resp = await _send(
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() => _dio.patch<Map<String, dynamic>>(
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'/v1/albums/$albumId',
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data: patch.toJson(),
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),
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);
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return Album.fromJson(resp.data!);
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}
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/// operationId `addAlbumMember`（POST /albums/{albumId}/members → 201）。
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///
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/// role 省略：契约缺省 collaborator（P1a 唯一可添加角色）。
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Future<Member> addMember(String albumId, String userId) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>(
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'/v1/albums/$albumId/members',
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data: {'userId': userId},
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),
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);
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return Member.fromJson(resp.data!);
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}
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/// operationId `listAlbumMembers`（GET /albums/{albumId}/members）。
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Future<CursorPage<Member>> listMembers(
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String albumId, {
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String? cursor,
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int? limit,
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}) =>
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_getPage(
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'/v1/albums/$albumId/members',
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Member.fromJson,
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cursor: cursor,
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limit: limit,
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);
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/// operationId `removeAlbumMember`
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/// （DELETE /albums/{albumId}/members/{userId} → 204，目标不存在幂等）。
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Future<void> removeMember(String albumId, String userId) =>
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_send(() => _dio.delete<void>('/v1/albums/$albumId/members/$userId'));
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/// operationId `lookupUsersByAccount`
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/// （GET /admin/users?accountPrefix=，无游标，按账号升序）。
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Future<List<AdminUserLookupItem>> lookupUsers(
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String accountPrefix, {
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int? limit,
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}) async {
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final resp = await _send(
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() => _dio.get<Map<String, dynamic>>(
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'/v1/admin/users',
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queryParameters: {
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'accountPrefix': accountPrefix,
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'limit': ?limit,
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},
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),
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);
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final items = resp.data!['items'] as List<dynamic>;
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return items
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.map(
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(dynamic e) => AdminUserLookupItem.fromJson(
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e as Map<String, dynamic>,
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),
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)
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.toList();
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}
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/// operationId `createCategory`
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/// （POST /albums/{albumId}/categories → 201）。
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Future<Category> createCategory(
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String albumId,
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CategoryCreateRequest req,
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) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>(
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'/v1/albums/$albumId/categories',
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data: req.toJson(),
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),
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);
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return Category.fromJson(resp.data!);
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}
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/// operationId `updateCategory`（PATCH /categories/{categoryId}）。
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Future<Category> updateCategory(
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String categoryId,
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CategoryUpdateRequest patch,
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) async {
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final resp = await _send(
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() => _dio.patch<Map<String, dynamic>>(
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'/v1/categories/$categoryId',
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data: patch.toJson(),
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),
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);
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return Category.fromJson(resp.data!);
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}
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/// operationId `deleteCategory`（DELETE /categories/{categoryId} → 204）。
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Future<void> deleteCategory(String categoryId) =>
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_send(() => _dio.delete<void>('/v1/categories/$categoryId'));
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// ── uploads（契约 tag: uploads）──
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/// operationId `initUpload`（POST /uploads → 201，clientTaskId 幂等）。
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Future<UploadInitResponse> initUpload(UploadInitRequest req) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>('/v1/uploads', data: req.toJson()),
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);
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return UploadInitResponse.fromJson(resp.data!);
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}
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/// operationId `renewUploadCredential`
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/// （POST /uploads/{uploadId}/renew，结构同初始化响应）。
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Future<UploadInitResponse> renewUpload(String uploadId) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>('/v1/uploads/$uploadId/renew'),
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);
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return UploadInitResponse.fromJson(resp.data!);
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}
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/// operationId `completeUpload`
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/// （POST /uploads/{uploadId}/complete，幂等核验）。
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Future<UploadCompleteResponse> completeUpload(String uploadId) async {
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final resp = await _send(
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() => _dio.post<Map<String, dynamic>>('/v1/uploads/$uploadId/complete'),
|
||
);
|
||
return UploadCompleteResponse.fromJson(resp.data!);
|
||
}
|
||
|
||
/// operationId `listUploads`（GET /uploads，跨设备会话历史，新在前）。
|
||
Future<CursorPage<UploadSessionRecord>> listUploads({
|
||
String? cursor,
|
||
int? limit,
|
||
}) =>
|
||
_getPage(
|
||
'/v1/uploads',
|
||
UploadSessionRecord.fromJson,
|
||
cursor: cursor,
|
||
limit: limit,
|
||
);
|
||
|
||
// ── photos（契约 tag: photos）──
|
||
|
||
/// operationId `listAlbumPhotos`
|
||
/// （GET /albums/{albumId}/photos，管理列表，全状态可见）。
|
||
Future<CursorPage<AdminPhoto>> listAlbumPhotos(
|
||
String albumId, {
|
||
PhotoVisibility? visibility,
|
||
String? categoryId,
|
||
String? cursor,
|
||
int? limit,
|
||
}) =>
|
||
_getPage(
|
||
'/v1/albums/$albumId/photos',
|
||
AdminPhoto.fromJson,
|
||
cursor: cursor,
|
||
limit: limit,
|
||
extraQuery: {
|
||
if (visibility != null) 'visibility': visibility.wire,
|
||
'categoryId': ?categoryId,
|
||
},
|
||
);
|
||
|
||
/// operationId `updatePhoto`（PATCH /photos/{photoId}）：仅允许
|
||
/// hidden ↔ published 切换，非法取值本地即抛 ArgumentError。
|
||
Future<PhotoRecord> updatePhotoVisibility(
|
||
String photoId,
|
||
PhotoVisibility visibility,
|
||
) async {
|
||
if (visibility != PhotoVisibility.hidden &&
|
||
visibility != PhotoVisibility.published) {
|
||
throw ArgumentError(
|
||
'updatePhotoVisibility 仅允许 hidden/published，收到 '
|
||
'${visibility.wire}',
|
||
);
|
||
}
|
||
final resp = await _send(
|
||
() => _dio.patch<Map<String, dynamic>>(
|
||
'/v1/photos/$photoId',
|
||
data: {'visibility': visibility.wire},
|
||
),
|
||
);
|
||
return PhotoRecord.fromJson(resp.data!);
|
||
}
|
||
|
||
/// operationId `deletePhoto`（DELETE /photos/{photoId} → 204 软删除）。
|
||
Future<void> deletePhoto(String photoId) =>
|
||
_send(() => _dio.delete<void>('/v1/photos/$photoId'));
|
||
|
||
// ── 通用游标分页 ──
|
||
|
||
/// 通用游标页请求：cursor/limit 仅在提供时下发，[extraQuery] 携带
|
||
/// 领域过滤参数。
|
||
Future<CursorPage<T>> _getPage<T>(
|
||
String path,
|
||
T Function(Map<String, dynamic>) fromJson, {
|
||
String? cursor,
|
||
int? limit,
|
||
Map<String, dynamic>? extraQuery,
|
||
}) async {
|
||
final resp = await _send(
|
||
() => _dio.get<Map<String, dynamic>>(
|
||
path,
|
||
queryParameters: {
|
||
'cursor': ?cursor,
|
||
'limit': ?limit,
|
||
...?extraQuery,
|
||
},
|
||
),
|
||
);
|
||
return CursorPage.parse(resp.data!, fromJson);
|
||
}
|
||
}
|
||
|
||
/// 会话存储 Provider（生产实现：flutter_secure_storage）。
|
||
final sessionStoreProvider =
|
||
Provider<SessionStore>((ref) => SecureSessionStore());
|
||
|
||
/// API 客户端 Provider。App 壳启动时注册 [ApiClient.onUnauthorized]
|
||
/// 跳转 /login（命名路由，见 lib/app/app.dart）。
|
||
final apiClientProvider = Provider<ApiClient>((ref) {
|
||
final client = ApiClient(sessionStore: ref.watch(sessionStoreProvider));
|
||
ref.onDispose(client.close);
|
||
return client;
|
||
});
|