generated from dellevin/template
133 lines
3.6 KiB
Dart
133 lines
3.6 KiB
Dart
import 'package:sqflite/sqflite.dart';
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import '../../models/data_models.dart';
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import '../database_helper.dart';
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/// 笔记数据访问对象
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class NoteDao {
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final DatabaseHelper _dbHelper = DatabaseHelper.instance;
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// 获取所有未删除的笔记
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Future<List<Note>> getAllNotes() async {
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final db = await _dbHelper.database;
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final List<Map<String, dynamic>> maps = await db.query(
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'notes',
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where: 'is_deleted = ?',
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whereArgs: [0],
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orderBy: 'created_at DESC',
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);
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return List.generate(maps.length, (i) => Note.fromJson(maps[i]));
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}
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// 分页查询笔记
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Future<List<Note>> getNotesPaged({int limit = 20, int offset = 0}) async {
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final db = await _dbHelper.database;
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final maps = await db.query('notes', where: 'is_deleted = 0',
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orderBy: 'created_at DESC', limit: limit, offset: offset);
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return List.generate(maps.length, (i) => Note.fromJson(maps[i]));
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}
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// 根据ID获取笔记
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Future<Note?> getNoteById(String id) async {
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final db = await _dbHelper.database;
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final List<Map<String, dynamic>> maps = await db.query(
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'notes',
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where: 'id = ?',
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whereArgs: [id],
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);
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if (maps.isEmpty) return null;
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return Note.fromJson(maps.first);
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}
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// 添加笔记
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Future<int> insertNote(Note note) async {
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final db = await _dbHelper.database;
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return await db.insert('notes', note.toJson());
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}
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// 更新笔记
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Future<int> updateNote(Note note) async {
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final db = await _dbHelper.database;
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return await db.update(
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'notes',
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note.toJson(),
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where: 'id = ?',
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whereArgs: [note.id],
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);
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}
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// 软删除笔记
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Future<int> deleteNote(String id) async {
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final db = await _dbHelper.database;
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return await db.update(
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'notes',
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{'is_deleted': 1, 'updated_at': DateTime.now().toIso8601String()},
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where: 'id = ?',
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whereArgs: [id],
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);
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}
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// ========== 回收站相关方法 ==========
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// 获取已删除的笔记
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Future<List<Note>> getDeletedNotes() async {
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final db = await _dbHelper.database;
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final List<Map<String, dynamic>> maps = await db.query(
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'notes',
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where: 'is_deleted = ?',
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whereArgs: [1],
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orderBy: 'created_at DESC',
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);
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return List.generate(maps.length, (i) => Note.fromJson(maps[i]));
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}
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// 恢复已删除的笔记
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Future<int> restoreNote(String id) async {
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final db = await _dbHelper.database;
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return await db.update(
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'notes',
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{'is_deleted': 0, 'updated_at': DateTime.now().toIso8601String()},
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where: 'id = ?',
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whereArgs: [id],
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);
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}
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// 彻底删除笔记
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Future<int> permanentDeleteNote(String id) async {
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final db = await _dbHelper.database;
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return await db.delete(
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'notes',
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where: 'id = ?',
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whereArgs: [id],
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);
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}
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// 搜索笔记
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Future<List<Note>> searchNotes(String query) async {
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final db = await _dbHelper.database;
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final List<Map<String, dynamic>> maps = await db.query(
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'notes',
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where: '(title LIKE ? OR content LIKE ? OR tags LIKE ?) AND is_deleted = ?',
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whereArgs: ['%$query%', '%$query%', '%$query%', 0],
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orderBy: 'created_at DESC',
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);
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return List.generate(maps.length, (i) => Note.fromJson(maps[i]));
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}
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// 根据标签筛选
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Future<List<Note>> getNotesByTag(String tag) async {
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final db = await _dbHelper.database;
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final List<Map<String, dynamic>> maps = await db.query(
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'notes',
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where: 'tags LIKE ? AND is_deleted = ?',
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whereArgs: ['%$tag%', 0],
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orderBy: 'created_at DESC',
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);
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return List.generate(maps.length, (i) => Note.fromJson(maps[i]));
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}
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}
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