admin1
487 lines
14 KiB
Dart
487 lines
14 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import '../../core/contracts/script_widget.dart';
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import '../../core/domain/usecases/script_widget/script_widget_service.dart';
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import '../../providers/di_providers.dart';
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import '../../shared/constants/layout_constants.dart';
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import '../../shared/theme/app_theme.dart';
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import '../../shared/utils/user_error_formatter.dart';
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import '../../shared/widgets/app_card.dart';
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import '../../shared/widgets/app_error_state.dart';
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import '../../shared/widgets/app_loading_ring.dart';
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import '../../shared/widgets/app_sliver_header.dart';
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import '../../shared/widgets/empty_state.dart';
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import '../../shared/widgets/page_background.dart';
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import '../../shared/widgets/script_video_card.dart';
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import '../../shared/widgets/section_header.dart';
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const double _kInfiniteScrollThreshold = 200;
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class ModuleAllPage extends ConsumerStatefulWidget {
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final String widgetId;
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final String moduleKey;
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final Map<String, String> initialParams;
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const ModuleAllPage({
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super.key,
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required this.widgetId,
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required this.moduleKey,
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this.initialParams = const <String, String>{},
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});
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@override
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ConsumerState<ModuleAllPage> createState() => _ModuleAllPageState();
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}
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class _ModuleAllPageState extends ConsumerState<ModuleAllPage> {
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final ScrollController _scrollController = ScrollController();
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ScriptWidgetModule? _module;
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Map<String, Object?> _parameters = <String, Object?>{};
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final List<ScriptWidgetContentSection> _sections =
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<ScriptWidgetContentSection>[];
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String? _initializedWidgetId;
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String? _initializationError;
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bool _isFirstLoad = true;
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bool _isLoadingMore = false;
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bool _hasMore = true;
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String? _loadError;
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@override
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void initState() {
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super.initState();
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_scrollController.addListener(_onScroll);
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}
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@override
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void dispose() {
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_scrollController.removeListener(_onScroll);
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_scrollController.dispose();
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super.dispose();
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}
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void _onScroll() {
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if (!_scrollController.hasClients) return;
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final remaining =
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_scrollController.position.maxScrollExtent -
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_scrollController.position.pixels;
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if (remaining <= _kInfiniteScrollThreshold) {
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unawaited(_fetchNextPage());
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}
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}
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Future<void> _initialize(InstalledScriptWidget installedWidget) async {
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if (_initializedWidgetId == installedWidget.manifest.id) return;
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_initializedWidgetId = installedWidget.manifest.id;
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final module = installedWidget.manifest.modules
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.where((candidate) => _moduleKey(candidate) == widget.moduleKey)
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.firstOrNull;
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if (module == null) {
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setState(() {
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_initializationError = '未找到模块功能：${widget.moduleKey}';
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});
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return;
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}
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final resolvedParameters = buildScriptWidgetParameterDefaults(module.params);
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for (final entry in widget.initialParams.entries) {
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if (resolvedParameters.containsKey(entry.key)) {
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resolvedParameters[entry.key] = entry.value;
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}
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}
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setState(() {
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_module = module;
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_parameters = resolvedParameters;
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_initializationError = null;
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});
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await _fetchNextPage();
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}
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String _moduleKey(ScriptWidgetModule module) {
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return module.id.isEmpty ? module.functionName : module.id;
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}
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ScriptWidgetParam? get _pagingParameter {
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return _module?.params
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.where(
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(parameter) => parameter.type == 'page' || parameter.type == 'offset',
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)
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.firstOrNull;
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}
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bool get _supportsPagination => _pagingParameter != null;
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Future<void> _fetchNextPage() async {
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if (_isLoadingMore || !_hasMore) return;
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final module = _module;
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if (module == null) return;
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setState(() {
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_isLoadingMore = true;
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_loadError = null;
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});
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try {
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final service = await ref.read(scriptWidgetServiceProvider.future);
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final freshSections = await service.loadModuleSections(
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widget.widgetId,
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module,
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_parameters,
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);
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if (!mounted) return;
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final contentItemCount = freshSections.fold<int>(
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0,
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(count, section) =>
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count +
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section.items
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.where((item) => item.type.toLowerCase() != 'text')
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.length,
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);
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setState(() {
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_mergeSections(freshSections);
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if (!_supportsPagination || contentItemCount == 0) {
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_hasMore = false;
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} else {
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_advancePagingCursor();
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}
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_isFirstLoad = false;
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_isLoadingMore = false;
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});
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} catch (error) {
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if (!mounted) return;
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setState(() {
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_loadError = formatUserError(error);
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_isFirstLoad = false;
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_isLoadingMore = false;
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});
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}
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}
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void _mergeSections(List<ScriptWidgetContentSection> freshSections) {
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for (final freshSection in freshSections) {
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final existingIndex = _sections.indexWhere(
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(existing) => existing.title == freshSection.title,
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);
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if (existingIndex == -1) {
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_sections.add(freshSection);
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continue;
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}
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final merged = <ScriptVideoItem>[
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..._sections[existingIndex].items,
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...freshSection.items,
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];
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_sections[existingIndex] = ScriptWidgetContentSection(
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title: freshSection.title,
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items: merged,
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);
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}
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}
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void _advancePagingCursor() {
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final module = _module;
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final pagingParameter = _pagingParameter;
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if (module == null || pagingParameter == null) return;
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final minimumValue = pagingParameter.type == 'page' ? 1 : 0;
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final currentValue =
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int.tryParse(_parameters[pagingParameter.name]?.toString() ?? '') ??
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minimumValue;
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final countParameter = module.params
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.where((parameter) => parameter.type == 'count')
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.firstOrNull;
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final pageStep = pagingParameter.type == 'offset'
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? int.tryParse(_parameters[countParameter?.name]?.toString() ?? '') ??
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20
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: 1;
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_parameters[pagingParameter.name] = currentValue + pageStep;
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}
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Future<void> _refresh() async {
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setState(() {
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_sections.clear();
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_isFirstLoad = true;
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_isLoadingMore = false;
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_hasMore = true;
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_loadError = null;
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final module = _module;
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if (module != null) {
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_parameters = buildScriptWidgetParameterDefaults(module.params);
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for (final entry in widget.initialParams.entries) {
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if (_parameters.containsKey(entry.key)) {
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_parameters[entry.key] = entry.value;
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}
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}
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}
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});
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await _fetchNextPage();
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}
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@override
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Widget build(BuildContext context) {
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final installedWidget = ref.watch(
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installedScriptWidgetProvider(widget.widgetId),
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);
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return Scaffold(
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backgroundColor: Colors.transparent,
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extendBodyBehindAppBar: true,
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body: Stack(
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children: [
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const Positioned.fill(child: PageBackground()),
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installedWidget.when(
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loading: () => const Center(child: AppLoadingRing()),
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error: (error, _) => Center(
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child: AppErrorState(
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message: formatUserError(error),
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onRetry: () => ref.invalidate(
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installedScriptWidgetProvider(widget.widgetId),
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),
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),
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),
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data: (widgetData) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (mounted) unawaited(_initialize(widgetData));
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});
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return _buildContent(widgetData);
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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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Widget _buildContent(InstalledScriptWidget installedWidget) {
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final moduleTitle = _module?.title.trim();
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final title = moduleTitle == null || moduleTitle.isEmpty
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? installedWidget.manifest.title
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: moduleTitle;
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return RefreshIndicator(
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onRefresh: _refresh,
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child: CustomScrollView(
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controller: _scrollController,
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physics: const AlwaysScrollableScrollPhysics(
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parent: BouncingScrollPhysics(),
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),
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slivers: [
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AppSliverHeader(title: title),
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..._buildBodySlivers(),
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],
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),
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);
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}
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List<Widget> _buildBodySlivers() {
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if (_initializationError case final initializationError?) {
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return [
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SliverFillRemaining(
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hasScrollBody: false,
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child: AppErrorState(message: initializationError),
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),
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];
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}
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if (_module == null || (_isFirstLoad && _isLoadingMore)) {
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return const [
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SliverFillRemaining(
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hasScrollBody: false,
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child: Center(child: AppLoadingRing()),
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),
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];
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}
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final firstLoadError = _isFirstLoad ? _loadError : null;
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if (firstLoadError != null) {
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return [
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SliverFillRemaining(
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hasScrollBody: false,
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child: AppErrorState(
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message: firstLoadError,
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onRetry: _fetchNextPage,
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),
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),
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];
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}
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if (_sections.every((section) => section.items.isEmpty)) {
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return const [
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SliverFillRemaining(
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hasScrollBody: false,
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child: EmptyState(
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compact: true,
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icon: Icons.video_library_outlined,
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title: '没有可显示的内容',
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),
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),
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];
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}
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return [
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SliverPadding(
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padding: const EdgeInsets.fromLTRB(20, 14, 20, 0),
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sliver: SliverList(
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delegate: SliverChildListDelegate.fixed([
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for (final section in _sections) ...[
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_ModuleGridSection(
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section: section,
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widgetId: widget.widgetId,
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),
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const SizedBox(height: 28),
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],
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]),
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),
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),
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SliverToBoxAdapter(child: _buildFooter()),
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];
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}
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Widget _buildFooter() {
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if (_isLoadingMore) {
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return const Padding(
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padding: EdgeInsets.symmetric(vertical: 24),
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child: Center(child: AppLoadingRing()),
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);
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}
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if (_loadError case final loadError?) {
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 20, horizontal: 20),
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child: AppErrorState(
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compact: true,
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message: loadError,
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onRetry: _fetchNextPage,
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),
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);
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}
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if (!_hasMore) {
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 24),
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child: Center(
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child: Text(
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'没有更多了',
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style: Theme.of(context).textTheme.bodySmall?.copyWith(
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color: context.appTokens.mutedForeground,
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),
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),
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),
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);
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}
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return const SizedBox(height: 40);
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}
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}
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class _ModuleGridSection extends StatelessWidget {
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final ScriptWidgetContentSection section;
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final String widgetId;
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const _ModuleGridSection({required this.section, required this.widgetId});
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@override
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Widget build(BuildContext context) {
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final statusItems = section.items
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.where((item) => item.type.toLowerCase() == 'text')
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.toList(growable: false);
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final contentItems = section.items
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.where((item) => item.type.toLowerCase() != 'text')
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.toList(growable: false);
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SectionHeader(label: section.title, count: contentItems.length),
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for (final statusItem in statusItems) ...[
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_ModuleStatusCard(item: statusItem),
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const SizedBox(height: 12),
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],
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if (contentItems.isNotEmpty)
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GridView.builder(
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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itemCount: contentItems.length,
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gridDelegate: mediaGridDelegate,
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itemBuilder: (context, index) {
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final item = contentItems[index];
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return ScriptVideoCard(
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item: item,
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width: double.infinity,
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onTap: () => context.push(
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'/modules/${Uri.encodeComponent(widgetId)}/detail',
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extra: item,
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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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class _ModuleStatusCard extends StatelessWidget {
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final ScriptVideoItem item;
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const _ModuleStatusCard({required this.item});
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@override
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Widget build(BuildContext context) {
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final normalizedId = item.id.toLowerCase();
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final indicatesError =
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normalizedId.startsWith('err') ||
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item.title.contains('失败') ||
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item.title.contains('错误') ||
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item.title.contains('拦截');
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final foregroundColor = indicatesError
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? Theme.of(context).colorScheme.error
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: context.appTokens.mutedForeground;
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return AppCard(
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padding: const EdgeInsets.all(16),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Icon(
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indicatesError
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? Icons.error_outline_rounded
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: Icons.info_outline_rounded,
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color: foregroundColor,
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),
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const SizedBox(width: 12),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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item.title.isEmpty ? '模块提示' : item.title,
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style: Theme.of(context).textTheme.titleSmall?.copyWith(
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color: foregroundColor,
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fontWeight: FontWeight.w700,
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),
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),
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if (item.description.trim().isNotEmpty) ...[
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const SizedBox(height: 4),
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Text(
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item.description,
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style: Theme.of(context).textTheme.bodySmall?.copyWith(
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color: context.appTokens.mutedForeground,
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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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