generated from dellevin/template
86 lines
2.5 KiB
Dart
86 lines
2.5 KiB
Dart
import 'package:flutter/foundation.dart';
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import '../../models/data_models.dart';
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import '../database_helper.dart';
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/// 书籍角色数据访问对象
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class BookCharacterDao {
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final DatabaseHelper _dbHelper = DatabaseHelper.instance;
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Future<T> _wrap<T>(String op, Future<T> Function() fn) async {
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try {
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return await fn();
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} catch (e) {
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debugPrint('[BookCharacterDao] $op error: $e');
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rethrow;
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}
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}
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/// 获取书籍的所有角色
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Future<List<BookCharacter>> getByBookId(String bookId) => _wrap('getByBookId', () async {
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final db = await _dbHelper.database;
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final maps = await db.query(
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'book_characters',
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where: 'book_id = ? AND is_deleted = 0',
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whereArgs: [bookId],
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orderBy: 'sort_order, created_at',
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);
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return maps.map((m) => BookCharacter.fromJson(m)).toList();
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});
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/// 根据ID获取角色
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Future<BookCharacter?> getById(String id) => _wrap('getById', () async {
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final db = await _dbHelper.database;
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final maps = await db.query(
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'book_characters',
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where: 'id = ? AND is_deleted = 0',
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whereArgs: [id],
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);
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if (maps.isEmpty) return null;
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return BookCharacter.fromJson(maps.first);
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});
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/// 添加角色
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Future<int> insert(BookCharacter character) => _wrap('insert', () async {
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final db = await _dbHelper.database;
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return await db.insert('book_characters', character.toJson());
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});
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/// 更新角色
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Future<int> update(BookCharacter character) => _wrap('update', () async {
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final db = await _dbHelper.database;
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return await db.update(
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'book_characters',
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character.toJson(),
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where: 'id = ?',
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whereArgs: [character.id],
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);
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});
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/// 软删除角色
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Future<int> delete(String id) => _wrap('delete', () async {
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final db = await _dbHelper.database;
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return await db.update(
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'book_characters',
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{'is_deleted': 1, 'updated_at': DateTime.now().toUtc().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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/// 获取书籍的角色数量
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Future<int> getCount(String bookId) => _wrap('getCount', () async {
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final db = await _dbHelper.database;
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final result = await db.rawQuery(
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'SELECT COUNT(*) as count FROM book_characters WHERE book_id = ? AND is_deleted = 0',
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[bookId],
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);
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return result.first['count'] as int? ?? 0;
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});
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/// 彻底删除角色
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Future<void> permanentDelete(String id) => _wrap('permanentDelete', () async {
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final db = await _dbHelper.database;
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await db.delete('book_characters', where: 'id = ?', whereArgs: [id]);
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});
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}
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