generated from dellevin/template
319 lines
8.6 KiB
Dart
319 lines
8.6 KiB
Dart
import 'dart:convert';
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import 'package:flutter/foundation.dart';
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import 'package:uuid/uuid.dart';
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/// 块类型枚举
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enum NoteBlockType {
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paragraph,
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heading1,
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heading2,
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heading3,
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bulletList,
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numberedList,
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checklist,
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quote,
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codeBlock,
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divider;
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String toJson() => name;
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static NoteBlockType fromString(String value) {
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return NoteBlockType.values.firstWhere(
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(t) => t.name == value,
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orElse: () => NoteBlockType.paragraph,
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);
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}
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/// 中文标签
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String get label {
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switch (this) {
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case NoteBlockType.paragraph:
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return '正文';
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case NoteBlockType.heading1:
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return '标题1';
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case NoteBlockType.heading2:
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return '标题2';
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case NoteBlockType.heading3:
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return '标题3';
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case NoteBlockType.bulletList:
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return '无序列表';
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case NoteBlockType.numberedList:
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return '有序列表';
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case NoteBlockType.checklist:
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return '待办';
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case NoteBlockType.quote:
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return '引用';
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case NoteBlockType.codeBlock:
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return '代码块';
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case NoteBlockType.divider:
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return '分割线';
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}
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}
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}
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/// 内联格式类型
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enum InlineFormatType {
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bold,
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italic,
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underline,
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strikethrough,
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inlineCode;
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String toJson() => name;
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static InlineFormatType fromString(String value) {
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return InlineFormatType.values.firstWhere(
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(t) => t.name == value,
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orElse: () => InlineFormatType.bold,
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);
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}
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}
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/// 内联格式区间
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class InlineFormatSpan {
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final int start;
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final int end;
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final Set<InlineFormatType> formats;
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const InlineFormatSpan({
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required this.start,
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required this.end,
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required this.formats,
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});
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Map<String, dynamic> toJson() => {
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's': start,
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'e': end,
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'f': formats.map((f) => f.toJson()).toList(),
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};
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factory InlineFormatSpan.fromJson(Map<String, dynamic> json) {
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return InlineFormatSpan(
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start: json['s'] as int? ?? 0,
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end: json['e'] as int? ?? 0,
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formats: (json['f'] as List<dynamic>?)
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?.map((f) => InlineFormatType.fromString(f as String))
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.toSet() ??
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{},
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);
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}
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InlineFormatSpan copyWith(
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{int? start, int? end, Set<InlineFormatType>? formats}) {
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return InlineFormatSpan(
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start: start ?? this.start,
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end: end ?? this.end,
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formats: formats ?? Set.from(this.formats),
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);
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}
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}
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/// 单个内容块
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class NoteBlock {
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final String id;
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final NoteBlockType type;
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final String text;
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final Map<String, dynamic> metadata;
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final List<InlineFormatSpan> formatting;
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NoteBlock({
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String? id,
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this.type = NoteBlockType.paragraph,
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this.text = '',
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Map<String, dynamic>? metadata,
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List<InlineFormatSpan>? formatting,
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}) : id = id ?? const Uuid().v4(),
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metadata = metadata ?? {},
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formatting = formatting ?? [];
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Map<String, dynamic> toJson() => {
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'id': id,
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'type': type.toJson(),
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'text': text,
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'metadata': metadata,
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'formatting': formatting.map((f) => f.toJson()).toList(),
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};
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factory NoteBlock.fromJson(Map<String, dynamic> json) {
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return NoteBlock(
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id: json['id'] as String?,
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type: NoteBlockType.fromString(json['type'] as String? ?? 'paragraph'),
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text: json['text'] as String? ?? '',
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metadata: (json['metadata'] as Map<String, dynamic>?) ?? {},
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formatting: (json['formatting'] as List<dynamic>?)
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?.map(
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(f) => InlineFormatSpan.fromJson(f as Map<String, dynamic>))
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.toList() ??
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[],
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);
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}
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NoteBlock copyWith({
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NoteBlockType? type,
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String? text,
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Map<String, dynamic>? metadata,
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List<InlineFormatSpan>? formatting,
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}) {
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return NoteBlock(
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id: id,
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type: type ?? this.type,
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text: text ?? this.text,
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metadata: metadata ?? Map.from(this.metadata),
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formatting: formatting ?? List.from(this.formatting),
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);
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}
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/// 深拷贝
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NoteBlock deepCopy() {
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return NoteBlock(
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id: id,
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type: type,
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text: text,
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metadata: Map.from(metadata),
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formatting: formatting
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.map((f) => InlineFormatSpan(
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start: f.start,
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end: f.end,
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formats: Set.from(f.formats),
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))
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.toList(),
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);
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}
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}
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/// Note Plus 文档
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///
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/// 仿 AppFlowy 的 View 模型：
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/// - parentId 指向父文档 ID（空字符串 = 根级文档）
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/// - 每个文档既是页面也是容器，支持无限嵌套
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class NotePlusDocument {
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final String id;
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final String title;
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final String parentId; // 父文档 ID，空字符串 = 根级
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final int sortIndex; // 同级排序序号
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final List<NoteBlock> blocks;
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final String? blocksJson; // 原始 Delta JSON（flutter_quill 模式优先使用）
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final List<String> tags;
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final List<String> images;
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final DateTime createdAt;
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final DateTime updatedAt;
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final bool isDeleted;
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NotePlusDocument({
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String? id,
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this.title = '',
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this.parentId = '',
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this.sortIndex = 0,
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List<NoteBlock>? blocks,
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this.blocksJson,
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List<String>? tags,
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List<String>? images,
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DateTime? createdAt,
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DateTime? updatedAt,
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this.isDeleted = false,
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}) : id = id ?? const Uuid().v4(),
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blocks = blocks ?? [NoteBlock()],
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tags = tags ?? [],
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images = images ?? [],
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createdAt = createdAt ?? DateTime.now(),
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updatedAt = updatedAt ?? DateTime.now();
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/// 从 JSON（DB 行）创建
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factory NotePlusDocument.fromJson(Map<String, dynamic> json) {
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final blocksJson = json['blocks_json'] as String? ?? '[]';
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List<NoteBlock> blocksList;
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try {
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blocksList = (jsonDecode(blocksJson) as List<dynamic>)
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.map((b) => NoteBlock.fromJson(b as Map<String, dynamic>))
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.toList();
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} catch (e) {
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debugPrint('[NotePlusDocument] blocks_json 解析失败，使用默认空文档: $e');
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blocksList = [];
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}
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return NotePlusDocument(
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id: json['id'] as String?,
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title: json['title'] as String? ?? '',
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parentId: json['parent_id'] as String? ?? '',
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sortIndex: json['sort_index'] as int? ?? 0,
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blocks: blocksList.isEmpty ? [NoteBlock()] : blocksList,
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blocksJson: json['blocks_json'] as String?,
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tags: _parseStringList(json['tags'] as String?),
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images: _parseStringList(json['images'] as String?),
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createdAt: json['created_at'] != null
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? DateTime.tryParse(json['created_at'] as String) ?? DateTime.now()
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: DateTime.now(),
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updatedAt: json['updated_at'] != null
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? DateTime.tryParse(json['updated_at'] as String) ?? DateTime.now()
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: DateTime.now(),
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isDeleted: (json['is_deleted'] as int?) == 1,
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);
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}
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/// 序列化为 DB 行
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Map<String, dynamic> toJson() => {
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'id': id,
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'title': title,
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'parent_id': parentId,
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'sort_index': sortIndex,
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'blocks_json': blocksJson ?? jsonEncode(blocks.map((b) => b.toJson()).toList()),
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'tags': tags.isEmpty ? null : jsonEncode(tags),
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'images': images.isEmpty ? null : jsonEncode(images),
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'created_at': createdAt.toUtc().toIso8601String(),
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'updated_at': updatedAt.toUtc().toIso8601String(),
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'is_deleted': isDeleted ? 1 : 0,
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};
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NotePlusDocument copyWith({
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String? title,
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String? parentId,
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int? sortIndex,
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List<NoteBlock>? blocks,
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String? blocksJson,
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List<String>? tags,
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List<String>? images,
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DateTime? updatedAt,
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bool? isDeleted,
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}) {
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return NotePlusDocument(
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id: id,
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title: title ?? this.title,
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parentId: parentId ?? this.parentId,
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sortIndex: sortIndex ?? this.sortIndex,
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blocks: blocks ?? List.from(this.blocks),
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blocksJson: blocksJson ?? this.blocksJson,
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tags: tags ?? List.from(this.tags),
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images: images ?? List.from(this.images),
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createdAt: createdAt,
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updatedAt: updatedAt ?? this.updatedAt,
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isDeleted: isDeleted ?? this.isDeleted,
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);
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}
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/// 深拷贝
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NotePlusDocument deepCopy() {
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return NotePlusDocument(
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id: id,
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title: title,
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parentId: parentId,
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sortIndex: sortIndex,
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blocks: blocks.map((b) => b.deepCopy()).toList(),
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tags: List.from(tags),
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images: List.from(images),
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createdAt: createdAt,
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updatedAt: updatedAt,
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isDeleted: isDeleted,
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);
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}
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static List<String> _parseStringList(String? json) {
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if (json == null || json.isEmpty) return [];
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try {
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final list = jsonDecode(json) as List<dynamic>;
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return list.map((e) => e.toString()).toList();
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} catch (_) {
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return [];
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}
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}
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}
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