feat(app): F8 班级系统 + F9/F10 占位页面
F8 班级系统: - ClassBloc 状态管理 (班级列表/日记墙/成员/主题/评语) - 班级主页: 日记墙 + 主题布置 Tab + 成员列表 - 老师管理页: 创建班级 + 布置主题 + 点评入口 - 班级码展示 + 评语卡片 F9 家长功能 (占位): - 家长中心页面框架: 日记查看/心情统计/使用时间/数据管理 - PIPL 合规提示卡片 F10 搜索/设置 (部分): - 个人中心: 用户信息 + 角色展示 + 功能入口 + 退出登录 - 搜索页: 标签筛选 + 心情过滤 + 搜索框 验证: flutter analyze 0 error
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iven
410
app/lib/features/class_/bloc/class_bloc.dart
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410
app/lib/features/class_/bloc/class_bloc.dart
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// 班级 BLoC — 管理班级状态、成员、日记墙、主题布置和评语
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import 'package:flutter_bloc/flutter_bloc.dart';
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import 'package:nuanji_app/data/models/journal_entry.dart';
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import 'package:nuanji_app/data/models/school_class.dart';
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// ===== Events =====
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sealed class ClassEvent {
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const ClassEvent();
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}
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/// 加载我的班级列表
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final class ClassLoadMyClasses extends ClassEvent {
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const ClassLoadMyClasses();
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}
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/// 选择当前班级
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final class ClassSelected extends ClassEvent {
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final String classId;
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const ClassSelected(this.classId);
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}
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/// 加载班级成员列表
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final class ClassLoadMembers extends ClassEvent {
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final String classId;
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const ClassLoadMembers(this.classId);
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}
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/// 加载班级日记墙（已分享到班级的日记）
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final class ClassLoadDiaryWall extends ClassEvent {
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final String classId;
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const ClassLoadDiaryWall(this.classId);
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}
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/// 加载主题布置列表
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final class ClassLoadTopics extends ClassEvent {
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final String classId;
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const ClassLoadTopics(this.classId);
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}
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/// 创建班级（老师）
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final class ClassCreate extends ClassEvent {
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final String name;
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final String? schoolName;
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const ClassCreate({required this.name, this.schoolName});
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}
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/// 布置主题（老师）
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final class TopicAssign extends ClassEvent {
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final String classId;
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final String title;
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final String? description;
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final DateTime? dueDate;
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const TopicAssign({
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required this.classId,
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required this.title,
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this.description,
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this.dueDate,
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});
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}
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/// 加载日记评语
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final class ClassLoadComments extends ClassEvent {
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final String journalId;
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const ClassLoadComments(this.journalId);
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}
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// ===== State =====
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/// 班级成员模型
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class ClassMember {
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final String userId;
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final String role;
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final String? nickname;
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final DateTime joinedAt;
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const ClassMember({
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required this.userId,
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required this.role,
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this.nickname,
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required this.joinedAt,
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});
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}
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/// 主题布置模型
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class TopicAssignment {
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final String id;
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final String classId;
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final String teacherId;
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final String title;
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final String? description;
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final DateTime? dueDate;
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final bool isActive;
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const TopicAssignment({
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required this.id,
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required this.classId,
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required this.teacherId,
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required this.title,
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this.description,
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this.dueDate,
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this.isActive = true,
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});
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}
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/// 评语模型
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class Comment {
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final String id;
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final String journalId;
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final String authorId;
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final String content;
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final DateTime createdAt;
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const Comment({
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required this.id,
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required this.journalId,
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required this.authorId,
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required this.content,
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required this.createdAt,
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});
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}
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/// 班级状态
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sealed class ClassState {
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const ClassState();
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}
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/// 初始状态
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final class ClassInitial extends ClassState {
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const ClassInitial();
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}
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/// 加载中
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final class ClassLoading extends ClassState {
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const ClassLoading();
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}
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/// 班级列表已加载
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final class ClassListLoaded extends ClassState {
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final List<SchoolClass> classes;
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final bool isLoading;
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const ClassListLoaded({
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this.classes = const [],
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this.isLoading = false,
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});
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ClassListLoaded copyWith({
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List<SchoolClass>? classes,
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bool? isLoading,
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}) =>
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ClassListLoaded(
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classes: classes ?? this.classes,
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isLoading: isLoading ?? this.isLoading,
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);
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}
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/// 班级详情已加载（日记墙 / 成员 / 主题 / 评语）
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final class ClassDetailLoaded extends ClassState {
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final SchoolClass classInfo;
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final List<ClassMember> members;
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final List<JournalEntry> diaryWall;
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final List<TopicAssignment> topics;
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final List<Comment> comments;
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final bool isLoadingWall;
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final bool isLoadingMembers;
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final String? selectedJournalId;
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const ClassDetailLoaded({
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required this.classInfo,
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this.members = const [],
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this.diaryWall = const [],
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this.topics = const [],
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this.comments = const [],
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this.isLoadingWall = false,
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this.isLoadingMembers = false,
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this.selectedJournalId,
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});
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ClassDetailLoaded copyWith({
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SchoolClass? classInfo,
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List<ClassMember>? members,
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List<JournalEntry>? diaryWall,
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List<TopicAssignment>? topics,
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List<Comment>? comments,
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bool? isLoadingWall,
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bool? isLoadingMembers,
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String? selectedJournalId,
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bool clearSelectedJournal = false,
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}) =>
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ClassDetailLoaded(
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classInfo: classInfo ?? this.classInfo,
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members: members ?? this.members,
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diaryWall: diaryWall ?? this.diaryWall,
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topics: topics ?? this.topics,
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comments: comments ?? this.comments,
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isLoadingWall: isLoadingWall ?? this.isLoadingWall,
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isLoadingMembers: isLoadingMembers ?? this.isLoadingMembers,
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selectedJournalId: clearSelectedJournal
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? null
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: (selectedJournalId ?? this.selectedJournalId),
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);
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}
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/// 错误状态
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final class ClassError extends ClassState {
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final String message;
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const ClassError(this.message);
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}
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// ===== BLoC =====
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class ClassBloc extends Bloc<ClassEvent, ClassState> {
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ClassBloc() : super(const ClassInitial()) {
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on<ClassLoadMyClasses>(_onLoadMyClasses);
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on<ClassSelected>(_onClassSelected);
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on<ClassLoadMembers>(_onLoadMembers);
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on<ClassLoadDiaryWall>(_onLoadDiaryWall);
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on<ClassLoadTopics>(_onLoadTopics);
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on<ClassCreate>(_onCreateClass);
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on<TopicAssign>(_onTopicAssign);
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on<ClassLoadComments>(_onLoadComments);
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}
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Future<void> _onLoadMyClasses(
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ClassLoadMyClasses event,
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Emitter<ClassState> emit,
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) async {
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emit(const ClassListLoaded(isLoading: true));
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// Phase 1: 占位数据，待 API 集成
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await Future.delayed(const Duration(milliseconds: 300));
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final now = DateTime.now();
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emit(ClassListLoaded(classes: [
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SchoolClass(
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id: 'class-1',
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name: '三年二班',
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schoolName: '阳光小学',
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teacherId: 'teacher-1',
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classCode: 'a1b2c3',
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memberCount: 28,
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createdAt: now,
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updatedAt: now,
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),
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]));
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}
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Future<void> _onClassSelected(
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ClassSelected event,
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Emitter<ClassState> emit,
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) async {
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final now = DateTime.now();
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final classInfo = SchoolClass(
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id: event.classId,
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name: '三年二班',
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schoolName: '阳光小学',
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teacherId: 'teacher-1',
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classCode: 'a1b2c3',
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memberCount: 28,
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createdAt: now,
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updatedAt: now,
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);
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emit(ClassDetailLoaded(classInfo: classInfo));
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add(ClassLoadDiaryWall(event.classId));
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add(ClassLoadMembers(event.classId));
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add(ClassLoadTopics(event.classId));
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}
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Future<void> _onLoadMembers(
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ClassLoadMembers event,
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Emitter<ClassState> emit,
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) async {
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if (state is! ClassDetailLoaded) return;
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final current = state as ClassDetailLoaded;
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emit(current.copyWith(isLoadingMembers: true));
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await Future.delayed(const Duration(milliseconds: 200));
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final now = DateTime.now();
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final members = List.generate(
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28,
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(i) => ClassMember(
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userId: 'user-$i',
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role: i == 0 ? 'teacher' : 'student',
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nickname: i == 0 ? '王老师' : '同学$i',
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joinedAt: now,
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),
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);
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emit(current.copyWith(members: members, isLoadingMembers: false));
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}
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Future<void> _onLoadDiaryWall(
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ClassLoadDiaryWall event,
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Emitter<ClassState> emit,
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) async {
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if (state is! ClassDetailLoaded) return;
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final current = state as ClassDetailLoaded;
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emit(current.copyWith(isLoadingWall: true));
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await Future.delayed(const Duration(milliseconds: 200));
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final now = DateTime.now();
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final titles = ['快乐的周末', '春天来了', '我的小猫', '数学课', '好朋友', '下雨天'];
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final diaries = List.generate(
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6,
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(i) => JournalEntry(
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id: 'diary-$i',
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authorId: 'user-${i + 1}',
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classId: event.classId,
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title: titles[i],
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date: now.subtract(Duration(days: i)),
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mood: Mood.values[i % Mood.values.length],
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tags: const ['日常', '心情'],
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createdAt: now,
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updatedAt: now,
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),
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);
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emit(current.copyWith(diaryWall: diaries, isLoadingWall: false));
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}
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Future<void> _onLoadTopics(
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ClassLoadTopics event,
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Emitter<ClassState> emit,
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) async {
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if (state is! ClassDetailLoaded) return;
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final current = state as ClassDetailLoaded;
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final topics = [
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TopicAssignment(
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id: 'topic-1',
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classId: event.classId,
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teacherId: 'teacher-1',
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title: '我的周末',
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description: '写一篇关于你周末生活的日记',
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dueDate: DateTime.now().add(const Duration(days: 3)),
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),
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TopicAssignment(
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id: 'topic-2',
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classId: event.classId,
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teacherId: 'teacher-1',
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title: '最开心的一天',
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description: '回忆一下让你最开心的一天',
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),
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];
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emit(current.copyWith(topics: topics));
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}
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Future<void> _onCreateClass(
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ClassCreate event,
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Emitter<ClassState> emit,
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) async {
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final newClass = SchoolClass.create(
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name: event.name,
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schoolName: event.schoolName ?? '',
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teacherId: 'current-user',
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classCode: 'x1y2z3',
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);
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if (state is ClassListLoaded) {
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final current = state as ClassListLoaded;
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emit(current.copyWith(classes: [...current.classes, newClass]));
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}
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}
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Future<void> _onTopicAssign(
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TopicAssign event,
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Emitter<ClassState> emit,
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) async {
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if (state is! ClassDetailLoaded) return;
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final current = state as ClassDetailLoaded;
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final newTopic = TopicAssignment(
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id: 'topic-${DateTime.now().millisecondsSinceEpoch}',
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classId: event.classId,
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teacherId: 'current-user',
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title: event.title,
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description: event.description,
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dueDate: event.dueDate,
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);
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emit(current.copyWith(topics: [newTopic, ...current.topics]));
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}
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Future<void> _onLoadComments(
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ClassLoadComments event,
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Emitter<ClassState> emit,
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) async {
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if (state is! ClassDetailLoaded) return;
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final current = state as ClassDetailLoaded;
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final comments = [
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Comment(
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id: 'comment-1',
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journalId: event.journalId,
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authorId: 'teacher-1',
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content: '写得很好，继续保持！',
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createdAt: DateTime.now(),
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),
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];
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emit(current.copyWith(
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comments: comments,
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selectedJournalId: event.journalId,
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));
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}
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}
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