284 lines
9.8 KiB
Dart
284 lines
9.8 KiB
Dart
import 'package:flutter/material.dart';
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import '../../core/api/services/image_api.dart';
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import '../../core/auth/auth_service.dart';
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import '../../core/user/account_refresh.dart';
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import '../../core/user/user_state.dart';
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import '../../core/theme/app_spacing.dart';
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import '../../shared/widgets/top_nav_bar.dart';
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import 'models/category_item.dart';
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import 'models/ext_config_item.dart';
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import 'models/task_item.dart';
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import 'widgets/home_tab_row.dart';
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import 'widgets/video_card.dart';
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/// 固定「pets」分类 id，用于展示 extConfig.items
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const int kExtCategoryId = -1;
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/// AI Video App home screen - tab 来自分类接口，Grid 来自任务列表或 extConfig.items
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class HomeScreen extends StatefulWidget {
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const HomeScreen({super.key, this.isActive = true});
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final bool isActive;
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@override
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State<HomeScreen> createState() => _HomeScreenState();
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}
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class _HomeScreenState extends State<HomeScreen> {
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List<CategoryItem> _categories = [];
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CategoryItem? _selectedCategory;
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List<TaskItem> _tasks = [];
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bool _categoriesLoading = true;
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bool _tasksLoading = false;
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int? _activeCardIndex;
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@override
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void initState() {
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super.initState();
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UserState.needShowVideoMenu.addListener(_onExtConfigChanged);
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UserState.extConfigItems.addListener(_onExtConfigChanged);
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AuthService.isLoginComplete.addListener(_onExtConfigChanged);
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UserState.homeReloadNonce.addListener(_onHomeReloadNonce);
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_loadCategories();
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if (widget.isActive) refreshAccount();
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}
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@override
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void dispose() {
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UserState.needShowVideoMenu.removeListener(_onExtConfigChanged);
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UserState.extConfigItems.removeListener(_onExtConfigChanged);
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AuthService.isLoginComplete.removeListener(_onExtConfigChanged);
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UserState.homeReloadNonce.removeListener(_onHomeReloadNonce);
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super.dispose();
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}
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void _onExtConfigChanged() {
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if (mounted) setState(() {});
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}
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void _onHomeReloadNonce() {
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if (!mounted) return;
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_loadCategories();
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}
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@override
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void didUpdateWidget(covariant HomeScreen oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (widget.isActive && !oldWidget.isActive) {
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refreshAccount();
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}
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}
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/// 仅 need_wait === true 时展示 Video 分类栏；其他（false/null/未解析）只显示图片列表
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bool get _showVideoMenu =>
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UserState.needShowVideoMenu.value == true;
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List<ExtConfigItem> get _parsedExtItems {
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final raw = UserState.extConfigItems.value;
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if (raw == null || raw.isEmpty) return [];
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return raw
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.map((e) => e is Map<String, dynamic>
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? ExtConfigItem.fromJson(e)
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: ExtConfigItem.fromJson(Map<String, dynamic>.from(e as Map)))
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.toList();
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}
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/// 是否处于首次加载中（分类/任务/extConfig 尚未就绪）
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/// 登录未完成时不显示页面加载指示器，由登录遮罩负责
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bool get _isListLoading {
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if (!AuthService.isLoginComplete.value) return false;
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if (_showVideoMenu) {
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if (_categoriesLoading) return true;
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if (_selectedCategory?.id == kExtCategoryId) {
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return UserState.extConfigItems.value == null;
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}
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return _tasksLoading;
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}
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return UserState.extConfigItems.value == null;
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}
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/// 分类栏加载中时是否显示加载指示器（登录未完成时不显示）
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bool get _showCategoriesLoading =>
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AuthService.isLoginComplete.value && _categoriesLoading;
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/// 当前列表：need_wait false 时用 extConfig.items；true 且选中固定分类时用 extConfig.items；否则用 _tasks
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List<TaskItem> get _displayTasks {
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if (!_showVideoMenu) {
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return _extItemsToTaskItems(_parsedExtItems);
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}
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if (_selectedCategory?.id == kExtCategoryId) {
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return _extItemsToTaskItems(_parsedExtItems);
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}
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return _tasks;
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}
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static List<TaskItem> _extItemsToTaskItems(List<ExtConfigItem> items) {
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return items
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.map((e) => TaskItem(
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templateName: e.title,
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title: e.title,
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previewImageUrl: e.image,
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previewVideoUrl: null,
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taskType: e.title,
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ext: e.detail,
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credits480p: e.cost,
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))
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.toList();
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}
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Future<void> _loadCategories() async {
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setState(() => _categoriesLoading = true);
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await AuthService.loginComplete;
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if (!mounted) return;
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final res = await ImageApi.getCategoryList();
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if (mounted) {
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if (res.isSuccess && res.data is List) {
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final list = (res.data as List)
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.map((e) => CategoryItem.fromJson(e as Map<String, dynamic>))
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.toList();
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if (UserState.needShowVideoMenu.value == true) {
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list.add(const CategoryItem(id: kExtCategoryId, name: 'pets', icon: null));
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}
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setState(() {
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_categories = list;
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_selectedCategory = list.isNotEmpty ? list.first : null;
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if (_selectedCategory != null) {
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if (_selectedCategory!.id == kExtCategoryId) {
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_tasks = [];
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_tasksLoading = false;
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} else {
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_loadTasks(_selectedCategory!.id);
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}
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}
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});
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} else {
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setState(() => _categories = []);
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}
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setState(() => _categoriesLoading = false);
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}
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}
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Future<void> _loadTasks(int categoryId) async {
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setState(() => _tasksLoading = true);
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final res = await ImageApi.getImg2VideoTasks(insignia: categoryId);
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if (mounted) {
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if (res.isSuccess && res.data is List) {
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final list = (res.data as List)
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.map((e) => TaskItem.fromJson(e as Map<String, dynamic>))
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.toList();
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setState(() {
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_tasks = list;
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_activeCardIndex = null;
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});
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} else {
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setState(() => _tasks = []);
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}
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setState(() => _tasksLoading = false);
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}
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}
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void _onTabChanged(CategoryItem c) {
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setState(() => _selectedCategory = c);
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if (c.id == kExtCategoryId) {
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setState(() {
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_tasks = [];
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_tasksLoading = false;
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});
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} else {
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_loadTasks(c.id);
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}
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}
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static const _placeholderImage =
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'https://images.unsplash.com/photo-1763929272543-0df093e4f659?w=400';
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: const Color(0xFFFAFAFA),
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appBar: PreferredSize(
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preferredSize: const Size.fromHeight(56),
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child: TopNavBar(
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title: 'PetsHero AI',
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credits: UserCreditsData.of(context)?.creditsDisplay ?? '--',
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onCreditsTap: () => Navigator.of(context).pushNamed('/recharge'),
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),
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),
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body: Column(
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children: [
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// 仅 need_wait == true 时展示顶部分类栏（Pencil: tabRow bK6o6）
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if (_showVideoMenu)
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Padding(
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padding: const EdgeInsets.symmetric(
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horizontal: AppSpacing.screenPadding,
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vertical: AppSpacing.xs,
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),
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child: _showCategoriesLoading
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? const SizedBox(
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height: 40,
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child: Center(child: CircularProgressIndicator()))
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: HomeTabRow(
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categories: _categories,
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selectedId: _selectedCategory?.id ?? -1,
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onTabChanged: _onTabChanged,
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),
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),
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Expanded(
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child: _isListLoading
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? const Center(child: CircularProgressIndicator())
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: LayoutBuilder(
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builder: (context, constraints) {
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final tasks = _displayTasks;
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return Center(
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 390),
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child: GridView.builder(
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padding: const EdgeInsets.fromLTRB(
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AppSpacing.screenPadding,
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AppSpacing.xl,
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AppSpacing.screenPadding,
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AppSpacing.screenPaddingLarge,
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),
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gridDelegate:
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const SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: 2,
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childAspectRatio: 165 / 248,
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mainAxisSpacing: AppSpacing.xl,
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crossAxisSpacing: AppSpacing.xl,
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),
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itemCount: tasks.length,
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itemBuilder: (context, index) {
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final task = tasks[index];
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final credits = task.credits480p != null
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? task.credits480p.toString()
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: '50';
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return VideoCard(
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imageUrl:
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task.previewImageUrl ?? _placeholderImage,
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videoUrl: task.previewVideoUrl,
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credits: credits,
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isActive: _activeCardIndex == index,
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onPlayRequested: () =>
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setState(() => _activeCardIndex = index),
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onStopRequested: () =>
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setState(() => _activeCardIndex = null),
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onGenerateSimilar: () =>
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Navigator.of(context).pushNamed(
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'/generate',
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arguments: task,
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),
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);
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},
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),
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),
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);
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},
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),
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),
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],
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),
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);
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}
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}
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