结构重构

lib/utils/movie/movie_poster_dao.dart

@@ -0,0 +1,61 @@
+import 'package:sqflite/sqflite.dart';
+import '../../models/data_models.dart';
+import '../database_helper.dart';
+
+/// 影视海报墙数据访问对象
+class MoviePosterDao {
+  final DatabaseHelper _dbHelper = DatabaseHelper.instance;
+
+  /// 获取影视的所有海报
+  Future<List<MoviePoster>> getPostersByMovieId(String movieId) async {
+    final db = await _dbHelper.database;
+    final List<Map<String, dynamic>> maps = await db.query(
+      'movie_posters',
+      where: 'movie_id = ? AND is_deleted = 0',
+      whereArgs: [movieId],
+      orderBy: 'created_at DESC',
+    );
+
+    return List.generate(maps.length, (i) => MoviePoster.fromJson(maps[i]));
+  }
+
+  /// 根据ID获取海报
+  Future<MoviePoster?> getPosterById(String id) async {
+    final db = await _dbHelper.database;
+    final List<Map<String, dynamic>> maps = await db.query(
+      'movie_posters',
+      where: 'id = ? AND is_deleted = 0',
+      whereArgs: [id],
+    );
+
+    if (maps.isEmpty) return null;
+    return MoviePoster.fromJson(maps.first);
+  }
+
+  /// 添加海报
+  Future<int> insertPoster(MoviePoster poster) async {
+    final db = await _dbHelper.database;
+    return await db.insert('movie_posters', poster.toJson());
+  }
+
+  /// 软删除海报
+  Future<int> deletePoster(String id) async {
+    final db = await _dbHelper.database;
+    return await db.update(
+      'movie_posters',
+      {'is_deleted': 1},
+      where: 'id = ?',
+      whereArgs: [id],
+    );
+  }
+
+  /// 获取影视的海报数量
+  Future<int> getPosterCount(String movieId) async {
+    final db = await _dbHelper.database;
+    final result = await db.rawQuery(
+      'SELECT COUNT(*) as count FROM movie_posters WHERE movie_id = ? AND is_deleted = 0',
+      [movieId],
+    );
+    return result.first['count'] as int;
+  }
+}