优化项目结构

2026-07-05 13:58:25 +08:00
parent 82aca12402
commit de180eee47
41 changed files with 0 additions and 0 deletions
--- a/lib/data/book/book_excerpt_dao.dart
+++ b/lib/data/book/book_excerpt_dao.dart
@@ -0,0 +1,117 @@
+import 'package:flutter/foundation.dart';
+import 'package:sqflite/sqflite.dart';
+import '../../models/data_models.dart';
+import '../database_helper.dart';
+
+/// 书籍摘抄数据访问对象
+class BookExcerptDao {
+  final DatabaseHelper _dbHelper = DatabaseHelper.instance;
+
+  Future<T> _wrap<T>(String op, Future<T> Function() fn) async {
+    try {
+      return await fn();
+    } catch (e) {
+      debugPrint('[BookExcerptDao] $op error: $e');
+      rethrow;
+    }
+  }
+
+  /// 获取书籍的所有摘抄
+  Future<List<BookExcerpt>> getExcerptsByBookId(String bookId) => _wrap('getExcerptsByBookId', () async {
+    final db = await _dbHelper.database;
+    final maps = await db.query(
+      'book_excerpts',
+      where: 'book_id = ? AND is_deleted = 0',
+      whereArgs: [bookId],
+      orderBy: 'created_at DESC',
+    );
+    return maps.map((map) => BookExcerpt.fromJson(map)).toList();
+  });
+
+  /// 根据ID获取摘抄
+  Future<BookExcerpt?> getExcerptById(String id) => _wrap('getExcerptById', () async {
+    final db = await _dbHelper.database;
+    final maps = await db.query(
+      'book_excerpts',
+      where: 'id = ? AND is_deleted = 0',
+      whereArgs: [id],
+    );
+    if (maps.isNotEmpty) return BookExcerpt.fromJson(maps.first);
+    return null;
+  });
+
+  /// 插入摘抄
+  Future<String> insertExcerpt(BookExcerpt excerpt) => _wrap('insertExcerpt', () async {
+    final db = await _dbHelper.database;
+    await db.insert(
+      'book_excerpts',
+      excerpt.toJson(),
+      conflictAlgorithm: ConflictAlgorithm.replace,
+    );
+    return excerpt.id;
+  });
+
+  /// 更新摘抄
+  Future<void> updateExcerpt(BookExcerpt excerpt) => _wrap('updateExcerpt', () async {
+    final db = await _dbHelper.database;
+    await db.update(
+      'book_excerpts',
+      excerpt.toJson(),
+      where: 'id = ?',
+      whereArgs: [excerpt.id],
+    );
+  });
+
+  /// 删除摘抄（软删除）
+  Future<void> deleteExcerpt(String id) => _wrap('deleteExcerpt', () async {
+    final db = await _dbHelper.database;
+    await db.update(
+      'book_excerpts',
+      {'is_deleted': 1, 'updated_at': DateTime.now().toUtc().toIso8601String()},
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  });
+
+  /// 彻底删除摘抄
+  Future<void> permanentDeleteExcerpt(String id) => _wrap('permanentDeleteExcerpt', () async {
+    final db = await _dbHelper.database;
+    await db.delete(
+      'book_excerpts',
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  });
+
+  /// 获取摘抄数量
+  Future<int> getExcerptCount(String bookId) => _wrap('getExcerptCount', () async {
+    final db = await _dbHelper.database;
+    final result = await db.rawQuery(
+      'SELECT COUNT(*) as count FROM book_excerpts WHERE book_id = ? AND is_deleted = 0',
+      [bookId],
+    );
+    return result.first['count'] as int? ?? 0;
+  });
+
+  /// 获取所有已删除的摘抄
+  Future<List<BookExcerpt>> getDeletedExcerpts() => _wrap('getDeletedExcerpts', () async {
+    final db = await _dbHelper.database;
+    final maps = await db.query(
+      'book_excerpts',
+      where: 'is_deleted = 1',
+      orderBy: 'updated_at DESC',
+    );
+    return maps.map((map) => BookExcerpt.fromJson(map)).toList();
+  });
+
+  /// 恢复已删除的摘抄
+  Future<void> restoreExcerpt(String id) => _wrap('restoreExcerpt', () async {
+    final db = await _dbHelper.database;
+    await db.update(
+      'book_excerpts',
+      {'is_deleted': 0},
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  });
+}