feat(diary): 数据层 + 班级系统 (Phase F1 + B3)
Flutter 数据层 (Phase F1): - journal_entry.dart: 日记数据模型 (Mood/Weather/tags/version) - journal_element.dart: 元素模型 (text/image/sticker/handwriting_ref/tape) - school_class.dart: 班级模型 - user_settings.dart: 用户设置 (主题/画笔/字号) - isar_database.dart: Isar 初始化 - api_client.dart: Dio + JWT注入 + 离线感知 + 401处理 - journal_repository.dart: 抽象接口 + InMemory实现 (乐观锁) - sync_engine.dart: WiFi同步 + 操作队列 + 重试(5次) + 快照持久化 Rust 班级系统 (Phase B3): - class_service.rs: 创建班级(6位码) + 加入班级 + 成员管理 - topic_service.rs: 老师布置主题 + 主题列表 - comment_service.rs: 老师点评 + 评语列表 - class_handler.rs: 5个API端点 + 权限守卫 - topic_handler.rs: 2个API端点 - comment_handler.rs: 2个API端点 - dto.rs: 新增5个DTO (ClassMemberResp/CreateTopicReq/TopicResp/CreateCommentReq/CommentResp) - 6条新路由注册 验证: cargo check 通过, 433测试全绿, flutter analyze 1 warning
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iven
156
app/lib/data/models/journal_element.dart
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156
app/lib/data/models/journal_element.dart
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// 日记元素数据模型 — 手写不可变类（避免 build_runner 依赖）
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import 'dart:collection';
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import 'package:uuid/uuid.dart';
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/// 元素类型 — 日记页面上的各种内容载体
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enum ElementType {
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text('text'),
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image('image'),
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sticker('sticker'),
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handwritingRef('handwriting_ref'),
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tape('tape');
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const ElementType(this.value);
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final String value;
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}
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/// 日记元素 — 日记页面中的单个内容单元
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///
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/// 每个元素有独立的位置、尺寸、旋转和层级。
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/// [content] 字段根据 [elementType] 存储不同的结构化数据：
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/// - text: {'text': '...', 'fontSize': 16.0, 'fontColor': '#2D2420'}
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/// - image: {'filePath': '...', 'thumbnailPath': '...'}
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/// - sticker: {'stickerPackId': '...', 'stickerId': '...'}
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/// - handwriting_ref: {'strokesFileId': '...', 'strokeCount': 42}
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/// - tape: {'tapeStyle': 'washi_dots', 'tapeColor': '#F2CC8F'}
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class JournalElement {
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final String id;
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final String journalId;
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final ElementType elementType;
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final double positionX;
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final double positionY;
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final double width;
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final double height;
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final double rotation;
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final int zIndex;
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final Map<String, dynamic> content;
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final int version;
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final DateTime createdAt;
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final DateTime updatedAt;
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const JournalElement({
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required this.id,
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required this.journalId,
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required this.elementType,
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this.positionX = 0,
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this.positionY = 0,
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this.width = 100,
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this.height = 100,
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this.rotation = 0,
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this.zIndex = 0,
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this.content = const {},
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this.version = 1,
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required this.createdAt,
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required this.updatedAt,
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});
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JournalElement copyWith({
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String? id,
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String? journalId,
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ElementType? elementType,
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double? positionX,
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double? positionY,
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double? width,
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double? height,
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double? rotation,
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int? zIndex,
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Map<String, dynamic>? content,
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int? version,
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DateTime? createdAt,
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DateTime? updatedAt,
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}) =>
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JournalElement(
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id: id ?? this.id,
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journalId: journalId ?? this.journalId,
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elementType: elementType ?? this.elementType,
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positionX: positionX ?? this.positionX,
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positionY: positionY ?? this.positionY,
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width: width ?? this.width,
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height: height ?? this.height,
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rotation: rotation ?? this.rotation,
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zIndex: zIndex ?? this.zIndex,
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content: content ?? this.content,
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version: version ?? this.version,
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createdAt: createdAt ?? this.createdAt,
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updatedAt: updatedAt ?? this.updatedAt,
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);
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Map<String, dynamic> toJson() => {
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'id': id,
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'journal_id': journalId,
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'element_type': elementType.value,
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'position_x': positionX,
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'position_y': positionY,
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'width': width,
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'height': height,
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'rotation': rotation,
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'z_index': zIndex,
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'content': content,
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'version': version,
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'created_at': createdAt.toIso8601String(),
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'updated_at': updatedAt.toIso8601String(),
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};
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factory JournalElement.fromJson(Map<String, dynamic> json) => JournalElement(
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id: json['id'] as String,
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journalId: json['journal_id'] as String,
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elementType: ElementType.values.firstWhere(
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(e) => e.value == json['element_type'],
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orElse: () => ElementType.text,
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),
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positionX: (json['position_x'] as num?)?.toDouble() ?? 0,
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positionY: (json['position_y'] as num?)?.toDouble() ?? 0,
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width: (json['width'] as num?)?.toDouble() ?? 100,
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height: (json['height'] as num?)?.toDouble() ?? 100,
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rotation: (json['rotation'] as num?)?.toDouble() ?? 0,
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zIndex: (json['z_index'] as int?) ?? 0,
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content: UnmodifiableMapView(
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Map<String, dynamic>.from(json['content'] as Map? ?? {}),
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),
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version: (json['version'] as int?) ?? 1,
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createdAt: DateTime.parse(json['created_at'] as String),
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updatedAt: DateTime.parse(json['updated_at'] as String),
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);
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/// 创建新元素的工厂方法 — 自动生成 id 和时间戳
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factory JournalElement.create({
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required String journalId,
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required ElementType elementType,
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double positionX = 0,
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double positionY = 0,
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double width = 100,
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double height = 100,
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double rotation = 0,
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int zIndex = 0,
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Map<String, dynamic> content = const {},
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}) {
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final now = DateTime.now();
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return JournalElement(
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id: const Uuid().v4(),
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journalId: journalId,
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elementType: elementType,
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positionX: positionX,
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positionY: positionY,
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width: width,
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height: height,
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rotation: rotation,
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zIndex: zIndex,
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content: content,
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version: 1,
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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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