126 lines
5.2 KiB
Dart
126 lines
5.2 KiB
Dart
import 'dart:convert';
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import 'package:hgdj/hj_model/home/collection_model.dart';
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import 'package:hgdj/hj_model/video_model.dart';
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import 'package:hgdj/hj_utils/const.dart';
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import 'package:hgdj/tools_base/cache/history/base_history_record_store.dart';
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import 'package:hgdj/tools_base/cache/history/cartoon_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/comics_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/community_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/game_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/novel_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/pic_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/search_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/short_video_history_store.dart';
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import 'package:hgdj/tools_base/cache/history/video_history_store.dart';
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import 'package:hgdj/tools_base/debug_log.dart';
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import '../hj_model/cartoon_media_info.dart';
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/// 浏览历史 + 搜索历史的统一入口。按 [MediaStyle] 派发到各自的 store，业务层不直接碰 store
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class HistoryUtil {
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/// 每种类型独占一个 db 文件，store 自身是单例。返回 null = 该类型不记历史
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static BaseHistoryRecordStore? _storeOf(MediaStyle type) => switch (type) {
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MediaStyle.Video => VideoHistoryStore(),
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MediaStyle.ShortVideo => ShortVideoHistoryStore(),
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MediaStyle.Comics => ComicsHistoryStore(),
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MediaStyle.Cartoon => CartoonHistoryStore(),
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MediaStyle.Novel => NovelHistoryStore(),
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MediaStyle.Community => CommunityHistoryStore(),
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MediaStyle.Pic => PicHistoryStore(),
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MediaStyle.Game => GameHistoryStore(),
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// 短剧的观看历史和续播位置是同一张表，走 DramaResumeStore；其余是当前业务无浏览历史需求的类型
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MediaStyle.Drama ||
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MediaStyle.Area ||
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MediaStyle.Seed ||
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MediaStyle.Actress ||
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MediaStyle.NakedChat ||
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MediaStyle.GroupChat =>
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null,
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};
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/// 插入浏览历史（已存在则刷新到最前；超上限自动删最旧，上限见 BaseHistoryRecordStore.maxRows）
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static Future<void> insert(Object? model, MediaStyle type) async {
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try {
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final json = _toJson(model);
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if (json == null) {
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//类型没在 _toJson/_idOf 里登记 → 静默不记历史。入参是 Object? 编译期拦不住，只能靠日志暴露
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debugLog('HistoryUtil.insert 未登记的类型', model?.runtimeType);
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return;
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}
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final id = _idOf(model);
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final store = _storeOf(type);
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if (id == null || id.isEmpty || store == null) return;
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await store.save(modelId: id, modelDataJson: jsonEncode(json));
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} catch (e) {
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debugLog('HistoryUtil.insert', e);
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}
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}
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/// 删除单条浏览历史
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static Future<void> delete(Object? model, MediaStyle type) async {
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try {
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final id = _idOf(model);
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if (id == null) {
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debugLog('HistoryUtil.delete 未登记的类型', model?.runtimeType);
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return;
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}
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final store = _storeOf(type);
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if (id.isEmpty || store == null) return;
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await store.remove(id);
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} catch (e) {
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debugLog('HistoryUtil.delete', e);
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}
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}
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/// 指定类型的浏览历史（按时间倒序，分页）。解析不出的条目直接丢弃，不让一条脏数据废掉整页
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static Future<List<T>> fetch<T>(MediaStyle type,
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{int page = 1, int pageSize = 20}) async {
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try {
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final store = _storeOf(type);
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if (store == null) return <T>[];
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final jsonList = await store.fetch(page: page, pageSize: pageSize);
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return jsonList.map((e) => _fromJson<T>(e)).whereType<T>().toList();
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} catch (e) {
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debugLog('HistoryUtil.fetch', e);
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return <T>[];
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}
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}
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/// 三个 _xxx 按实例匹配，新增可记历史的 model 时这里和 [_fromJson] 一起加一行
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static String? _idOf(Object? model) => switch (model) {
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VideoModel m => m.id,
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CartoonMediaInfo m => m.id,
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CollectionModel m => m.id,
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_ => null,
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};
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static Map<String, dynamic>? _toJson(Object? model) => switch (model) {
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VideoModel m => m.toJson(),
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CartoonMediaInfo m => m.toJson(),
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CollectionModel m => m.toJson(),
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_ => null,
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};
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/// 反序列化只能按 [T] 分派（拿不到实例）。**必须用 T == 类型比较**：
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/// 靠 T.toString() 对类名在 release 混淆后必然失配，表现是列表静默空白
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static T? _fromJson<T>(String raw) {
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final json = Map<String, dynamic>.from(jsonDecode(raw));
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if (T == VideoModel) return VideoModel.fromJson(json) as T;
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if (T == CartoonMediaInfo) return CartoonMediaInfo.fromJson(json) as T;
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if (T == CollectionModel) return CollectionModel.fromJson(json) as T;
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return null;
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}
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//搜索历史（按时间倒序）
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static Future<List<String>> searchHistories() =>
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SearchHistoryStore().fetchAll();
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//新增一条搜索历史（已存在则去重提到最前，超上限自动删最旧）
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static Future<void> addSearch(String keyword) =>
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SearchHistoryStore().save(keyword);
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//清空搜索历史
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static Future<void> clearSearch() => SearchHistoryStore().clean();
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}
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