110 lines
3.5 KiB
Dart
110 lines
3.5 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'package:hgdj/hj_utils/const.dart';
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import 'package:hgdj/tools_base/event_bus/events.dart';
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import 'package:hgdj/tools_base/widget/scroll_positioned_list/src/scrollable_positioned_list.dart';
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import '../../../hj_model/acg/comic_chapters_model.dart';
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import '../../../hj_model/cartoon_media_info.dart';
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import '../../../hj_utils/api_service/acg_service.dart';
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import '../../hj_utils/history_util.dart';
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import '../../tools_base/event_bus/event_bus_util.dart';
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import 'cartoon_read_page.dart';
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import 'widget/acg_source_manager.dart';
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import 'widget/cartoon_subset_alert.dart';
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class CartoonDetailLogic extends GetxController
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with GetTickerProviderStateMixin {
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String? id;
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CartoonMediaInfo? mediaInfo;
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bool showHeader = true;
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double showOffset = 245;
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bool get isCartoonType => manager.mediaInfo?.mediaType == 'image'; //是否是动画
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// 推荐 tab 固定 3 个（漫画/视频/动漫），顺序由页面按当前内容类型动态排
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late TabController tabCtr = TabController(length: 3, vsync: this);
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late ScrollController scrollCtr = ScrollController()
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..addListener(() {
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//滚过阈值切换顶部沉浸 header,状态变了才刷新
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final show = scrollCtr.offset <= showOffset;
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if (show != showHeader) {
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showHeader = show;
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update(['header']);
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}
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});
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final ItemScrollController itemSCtrl = ItemScrollController();
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late ACGSourceManager manager;
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late StreamSubscription subscription;
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CartoonDetailLogic({this.id})
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: manager = ACGSourceManager(id ?? ''); //初始化，加载子集
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@override
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void onReady() async {
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super.onReady();
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// subscription 是 late，必须在任何 await 前初始化，
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// 否则详情加载途中退出会让 onClose 的 cancel() 打到未初始化字段而崩
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subscription = eventBus.on<ACGMenuChanged>((event) {
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//列表未 attach(未 build/布局完)时 jumpTo 内部会 ! 取空崩溃,加保护
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if (itemSCtrl.isAttached) {
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itemSCtrl.jumpTo(index: event.index ?? 0);
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}
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});
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// 先拿详情（含 freeEpisode），再拉子集，才能正确标记前 N 集免费
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await loadData();
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manager.fetchAllEpisodes();
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}
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@override
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void onClose() {
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subscription.cancel();
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eventBus.off(subscription);
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tabCtr.dispose(); //修复泄漏
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scrollCtr.dispose(); //修复泄漏
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// manager 由页面的 ChangeNotifierProvider(create:) 在卸载时 dispose,本类不再重复释放
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super.onClose();
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}
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//获取媒体详情
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Future loadData() async {
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mediaInfo = await ACGService.getMediaInfo(id ?? '');
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if (mediaInfo != null) {
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HistoryUtil.insert(mediaInfo!, MediaStyle.Comics);
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manager.mediaInfo = mediaInfo;
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showOffset = mediaInfo?.mediaType == 'text' ? 300 : 320;
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} else {
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mediaInfo = CartoonMediaInfo();
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}
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update();
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}
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//切换集数
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changeEpisode(int episode, bool jump) async {
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manager.changeEpisodesIndex(episode, jump: jump);
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play(); //播放
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}
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play() async {
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//判断权限
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ComicChapterInfo? info =
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await manager.getEpisodeHasPermisson(manager.index);
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if (info == null) return;
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Get.to(() => CartoonReadPage(manager: manager..index = manager.index));
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}
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//集数弹窗
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onMenuAction() async {
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int episode = await Get.bottomSheet(
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CartoonSubSetAlert(sourceManager: manager),
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barrierColor: Colors.black.withValues(alpha: .2),
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);
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if (episode > -1) {
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changeEpisode(episode, true);
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}
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}
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}
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