dual check v0.1
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// DualCheck API 封装
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// 后端统一响应格式：{code:0, message, data}
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// WebSocket 消息格式：{type, data, error}
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import 'package:dio/dio.dart';
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import 'package:flutter/foundation.dart';
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/// 后端地址
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const String _baseUrl = kIsWeb
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? 'http://localhost:8080'
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: 'http://127.0.0.1:8080';
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/// WebSocket 地址
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const String _wsBaseUrl =
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kIsWeb ? 'ws://localhost:8080' : 'ws://127.0.0.1:8080';
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class DualCheckApi {
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DualCheckApi()
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: _dio = Dio(BaseOptions(
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baseUrl: _baseUrl,
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connectTimeout: const Duration(seconds: 10),
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receiveTimeout: const Duration(seconds: 10),
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)) {
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_dio.interceptors.add(InterceptorsWrapper(
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onResponse: (response, handler) {
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final data = response.data;
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if (data is Map<String, dynamic> && data['code'] != 0) {
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handler.reject(DioException(
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requestOptions: response.requestOptions,
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response: response,
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type: DioExceptionType.badResponse,
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error: _BizError(data['code'] as int, data['message'] as String),
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));
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return;
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}
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handler.next(response);
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},
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));
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}
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final Dio _dio;
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// ── Create ──
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Future<CreateResp> createSession({required String nickname}) async {
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final res = await _dio.post<Map<String, dynamic>>(
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'/api/v1/dual-check/create',
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data: {'nickname': nickname},
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);
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final d = res.data!['data'] as Map<String, dynamic>;
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return CreateResp(
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sessionId: d['session_id'] as String,
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nickname: d['nickname'] as String,
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ttl: d['ttl_seconds'] as int,
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);
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}
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// ── Submit ──
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Future<SubmitResp> submit({
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required String sessionId,
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required String nickname,
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required String role, // "initiator" | "participant"
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required String text,
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}) async {
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final res = await _dio.post<Map<String, dynamic>>(
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'/api/v1/dual-check/submit',
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data: {
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'session_id': sessionId,
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'nickname': nickname,
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'role': role,
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'text': text,
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},
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);
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final d = res.data!['data'] as Map<String, dynamic>;
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return SubmitResp(
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submitted: d['submitted'] as bool,
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initiatorReady: d['initiator_ready'] as bool,
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match: d['match'] as bool?,
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);
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}
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// ── CheckSession ──
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Future<CheckResp> checkSession(String sessionId) async {
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final res = await _dio.get<Map<String, dynamic>>(
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'/api/v1/dual-check/check/$sessionId',
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);
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final d = res.data!['data'] as Map<String, dynamic>;
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return CheckResp(
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exists: d['exists'] as bool,
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initiatorReady: d['initiator_ready'] as bool,
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participantCount: d['participant_count'] as int,
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ttlSeconds: d['ttl_seconds'] as int,
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);
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}
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// ── GetSession 全量快照 ──
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Future<SessionResp> getSession(String sessionId) async {
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final res = await _dio.get<Map<String, dynamic>>(
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'/api/v1/dual-check/session/$sessionId',
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);
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return parseSession(res.data!['data'] as Map<String, dynamic>);
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}
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// ── SetResubmit 发起方切换"允许参与者重新提交" ──
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Future<SessionResp> setResubmit(String sessionId, {required bool allow}) async {
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final res = await _dio.post<Map<String, dynamic>>(
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'/api/v1/dual-check/session/$sessionId/resubmit',
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data: {'allow': allow},
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);
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return parseSession(res.data!['data'] as Map<String, dynamic>);
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}
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// ── EndSession 发起方主动结束会话 ──
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Future<void> endSession(String sessionId) async {
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await _dio.post('/api/v1/dual-check/session/$sessionId/end');
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}
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static SessionResp parseSession(Map<String, dynamic> d) {
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final parts = (d['participants'] as List)
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.map((p) => ParticipantResp.fromMap(p as Map<String, dynamic>))
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.toList();
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return SessionResp(
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sessionId: d['session_id'] as String,
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initiatorNickname: (d['initiator_nickname'] ?? '') as String,
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initiatorReady: d['initiator_ready'] as bool,
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allowResubmit: (d['allow_resubmit'] as bool?) ?? false,
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participants: parts,
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ttlSeconds: d['ttl_seconds'] as int,
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);
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}
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// ── WS URL ──
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String wsUrl({
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required String sessionId,
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required String role,
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required String nickname,
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}) {
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return '$_wsBaseUrl/api/v1/dual-check/ws'
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'?session_id=${Uri.encodeQueryComponent(sessionId)}'
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'&role=$role'
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'&nickname=${Uri.encodeQueryComponent(nickname)}';
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}
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}
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// ── 数据模型 ──
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class CreateResp {
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final String sessionId;
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final String nickname;
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final int ttl;
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CreateResp({required this.sessionId, required this.nickname, required this.ttl});
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}
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class SubmitResp {
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final bool submitted;
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final bool initiatorReady;
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final bool? match;
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SubmitResp({required this.submitted, required this.initiatorReady, this.match});
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}
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class CheckResp {
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final bool exists;
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final bool initiatorReady;
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final int participantCount;
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final int ttlSeconds;
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CheckResp({
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required this.exists,
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required this.initiatorReady,
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required this.participantCount,
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required this.ttlSeconds,
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});
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}
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class ParticipantResp {
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final String nickname;
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final bool joined;
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final bool submitted;
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final bool? match;
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ParticipantResp({
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required this.nickname,
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required this.joined,
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required this.submitted,
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this.match,
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});
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factory ParticipantResp.fromMap(Map<String, dynamic> m) {
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return ParticipantResp(
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nickname: m['nickname'] as String,
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joined: m['joined'] as bool? ?? true,
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submitted: m['submitted'] as bool,
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match: m['match'] as bool?,
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);
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}
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}
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class SessionResp {
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final String sessionId;
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final String initiatorNickname;
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final bool initiatorReady;
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final bool allowResubmit;
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final List<ParticipantResp> participants;
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final int ttlSeconds;
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SessionResp({
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required this.sessionId,
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required this.initiatorNickname,
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required this.initiatorReady,
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required this.allowResubmit,
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required this.participants,
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required this.ttlSeconds,
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});
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}
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// ── WS 消息类型 ──
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class WSMessage {
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final String type;
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final Map<String, dynamic> data;
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final String? error;
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WSMessage({required this.type, required this.data, this.error});
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factory WSMessage.fromJson(Map<String, dynamic> json) {
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return WSMessage(
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type: json['type'] as String,
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data: (json['data'] as Map<String, dynamic>?) ?? const {},
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error: json['error'] as String?,
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);
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}
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}
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// ── 业务错误处理 ──
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class _BizError implements Exception {
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_BizError(this.code, this.message);
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final int code;
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final String message;
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@override
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String toString() => '[biz:$code] $message';
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}
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bool isBizError(DioException e) => e.error is _BizError;
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int? bizErrorCode(DioException e) {
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final err = e.error;
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return err is _BizError ? err.code : null;
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}
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String bizErrorMessage(DioException e) {
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final err = e.error;
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return err is _BizError ? err.message : (e.message ?? '请求失败');
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}
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