547 lines
18 KiB
Dart
547 lines
18 KiB
Dart
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import 'dart:async';
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import 'dart:io';
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import 'dart:math' as math;
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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:flutter_riverpod/misc.dart';
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import '../../core/contracts/tmdb.dart';
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import '../../providers/di_providers.dart';
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import '../../providers/home_page_mode_provider.dart';
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import '../../providers/shell_backdrop_provider.dart';
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import '../../providers/sm_account_provider.dart';
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import '../../providers/tmdb_settings_provider.dart';
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import '../../shared/constants/breakpoints.dart';
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import '../../shared/mappers/tmdb_image_url.dart';
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import '../../shared/utils/color_utils.dart';
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import '../../shared/utils/media_nav.dart';
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import '../../shared/widgets/app_error_state.dart';
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import '../../shared/widgets/empty_state.dart';
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import '../../shared/widgets/hover_scrollable_row.dart';
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import '../../shared/widgets/media_row_metrics.dart';
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import '../../shared/widgets/media_poster_card.dart';
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import '../../shared/widgets/scroll_fade_header.dart';
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import '../../shared/theme/app_theme.dart';
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import '../../shared/widgets/section_header.dart';
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import '../../shared/widgets/skeleton_media_row.dart';
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import '../../shared/widgets/tmdb_poster_card.dart';
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import '../home/widgets/banner_carousel.dart' show HomeBannerSkeleton;
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import '../home/widgets/server_dropdown_button.dart';
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import 'discover_helpers.dart';
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import 'widgets/tmdb_banner_carousel.dart';
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import 'widgets/trakt_continue_watching_row.dart';
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String _smAccountHint(SmAuthStatus? status) => switch (status) {
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SmAuthStatus.expired => '登录已过期，请重新登录后再浏览推荐内容。',
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SmAuthStatus.degraded => '账号凭据不完整，请重新登录后再浏览推荐内容。',
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_ => '需要登录 sm-server 账号后才能浏览推荐内容。',
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};
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class _DiscoverRowSpec {
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final String title;
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final String mediaType;
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final String sortBy;
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final String? withGenres;
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final String? voteCountGte;
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const _DiscoverRowSpec({
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required this.title,
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required this.mediaType,
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this.sortBy = 'popularity.desc',
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this.withGenres,
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this.voteCountGte,
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});
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TmdbDiscoverKey get key => (
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mediaType: mediaType,
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sortBy: sortBy,
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withGenres: withGenres,
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voteCountGte: voteCountGte,
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);
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}
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const _discoverRows = <_DiscoverRowSpec>[
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_DiscoverRowSpec(
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title: '高分剧集',
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mediaType: 'tv',
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sortBy: 'vote_average.desc',
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voteCountGte: '200',
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),
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_DiscoverRowSpec(title: '科幻电影', mediaType: 'movie', withGenres: '878'),
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_DiscoverRowSpec(title: '动画', mediaType: 'movie', withGenres: '16'),
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_DiscoverRowSpec(title: '真人秀', mediaType: 'tv', withGenres: '10764'),
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_DiscoverRowSpec(title: '纪录片', mediaType: 'movie', withGenres: '99'),
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];
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class DiscoverPage extends ConsumerStatefulWidget {
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final bool embedInHome;
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const DiscoverPage({super.key, this.embedInHome = false});
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@override
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ConsumerState<DiscoverPage> createState() => _DiscoverPageState();
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}
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class _DiscoverPageState extends ConsumerState<DiscoverPage> {
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TmdbRecommendation? _lastBannerItem;
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String? _lastBaseUrl;
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final ScrollController _scrollController = ScrollController();
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final ValueNotifier<double> _scrollProgress = ValueNotifier<double>(0.0);
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@override
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void initState() {
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super.initState();
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_scrollController.addListener(_handleScroll);
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}
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@override
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void dispose() {
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_scrollController.removeListener(_handleScroll);
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_scrollController.dispose();
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_scrollProgress.dispose();
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super.dispose();
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}
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void _handleScroll() {
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if (!_scrollController.hasClients) return;
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const threshold = 120.0;
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final progress = (_scrollController.offset / threshold).clamp(0.0, 1.0);
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_scrollProgress.value = progress;
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}
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void _onBannerActiveItem(TmdbRecommendation item, String baseUrl) {
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_lastBannerItem = item;
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_lastBaseUrl = baseUrl;
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_writeBackdropIfActive();
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}
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void _writeBackdropIfActive() {
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if (!_isActiveRoute()) return;
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final item = _lastBannerItem;
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final baseUrl = _lastBaseUrl;
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if (item == null || baseUrl == null) return;
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final url = TmdbImageUrl.backdrop(baseUrl, item.backdropPath);
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if (url == null) return;
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final state = ShellBackdropState(
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primaryImageUrl: url,
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fallbackImageUrls: [url],
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accentColor: _accentColorFor(item.id.toString()),
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);
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted) return;
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if (!_isActiveRoute()) return;
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ref.read(shellBackdropProvider.notifier).show(state);
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});
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}
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bool _isActiveRoute() {
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final location = ref.read(shellLocationProvider);
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if (location == '/discover') return true;
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return widget.embedInHome &&
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location == '/' &&
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ref.read(homePageModeProvider) == HomePageMode.recommend;
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}
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void _onNoBanner() {
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_lastBannerItem = null;
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_lastBaseUrl = null;
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted) return;
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if (!_isActiveRoute()) return;
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if (ref.read(shellBackdropProvider) == null) return;
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ref.read(shellBackdropProvider.notifier).clear();
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});
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}
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Color _accentColorFor(String seed) => accentColorForSeed(
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seed,
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isDark: Theme.of(context).brightness == Brightness.dark,
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);
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Future<void> _refresh() async {
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ref.invalidate(tmdbTrendingDayProvider);
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ref.invalidate(tmdbTrendingWeekProvider);
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ref.invalidate(tmdbPopularMoviesProvider);
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ref.invalidate(tmdbPopularTvProvider);
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ref.invalidate(tmdbAiringTodayTvProvider);
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ref.invalidate(tmdbTopRatedMoviesProvider);
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for (final spec in _discoverRows) {
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ref.invalidate(tmdbDiscoverProvider(spec.key));
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}
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ref.invalidate(traktContinueWatchingProvider);
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await Future<void>.delayed(const Duration(milliseconds: 250));
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}
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@override
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Widget build(BuildContext context) {
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final settingsAsync = ref.watch(tmdbSettingsProvider);
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ref.listen<String>(shellLocationProvider, (_, loc) {
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if (loc != '/discover' && !(widget.embedInHome && loc == '/')) return;
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if (_lastBannerItem != null) {
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_writeBackdropIfActive();
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} else {
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_onNoBanner();
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}
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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: settingsAsync.when(
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loading: () {
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_onNoBanner();
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return const _DiscoverSkeleton();
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},
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error: (_, _) {
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_onNoBanner();
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return AppErrorState(
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title: 'TMDB 设置加载失败',
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onRetry: () => ref.invalidate(tmdbSettingsProvider),
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);
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},
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data: (settings) {
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final accountAsync = ref.watch(smAccountProvider);
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final account = accountAsync.value;
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final needsAccount =
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settings.accessMode == TmdbAccessMode.smAccount &&
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settings.enabled;
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if (needsAccount && account == null && accountAsync.isLoading) {
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_onNoBanner();
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return const _DiscoverSkeleton();
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}
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final canRequest = settings.accessMode == TmdbAccessMode.smAccount
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? settings.enabled && (account?.hasActiveSession ?? false)
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: settings.canRequest;
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if (!canRequest) {
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_onNoBanner();
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final message = settings.accessMode == TmdbAccessMode.smAccount
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? _smAccountHint(account?.status)
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: '需要在本地配置 TMDB API Key 或读取令牌后才能浏览推荐内容。';
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return Center(
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child: EmptyState(
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icon: Icons.explore_off_outlined,
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title: 'TMDB 未配置',
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message: message,
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),
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);
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}
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final sections = <Widget>[
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_DiscoverSection(
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title: '今日热门',
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provider: tmdbTrendingDayProvider,
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imageBaseUrl: settings.effectiveImageBaseUrl,
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),
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_DiscoverSection(
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title: '本周热门',
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provider: tmdbTrendingWeekProvider,
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imageBaseUrl: settings.effectiveImageBaseUrl,
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),
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_DiscoverSection(
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title: '热门电影',
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provider: tmdbPopularMoviesProvider,
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imageBaseUrl: settings.effectiveImageBaseUrl,
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fallbackMediaType: 'movie',
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),
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_DiscoverSection(
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title: '热门剧集',
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provider: tmdbPopularTvProvider,
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imageBaseUrl: settings.effectiveImageBaseUrl,
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fallbackMediaType: 'tv',
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),
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_DiscoverSection(
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title: '高分电影',
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provider: tmdbTopRatedMoviesProvider,
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imageBaseUrl: settings.effectiveImageBaseUrl,
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fallbackMediaType: 'movie',
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),
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for (final spec in _discoverRows)
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_DiscoverSection(
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title: spec.title,
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provider: tmdbDiscoverProvider(spec.key),
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imageBaseUrl: settings.effectiveImageBaseUrl,
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fallbackMediaType: spec.mediaType,
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),
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];
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final tokens = context.appTokens;
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final isDesktop = Platform.isMacOS || Platform.isWindows;
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final isCompact = Breakpoints.isCompact(
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MediaQuery.sizeOf(context).width,
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);
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final topPad = isDesktop
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? tokens.titleBarHeight
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: math.max(
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MediaQuery.paddingOf(context).top,
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tokens.titleBarHeight,
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);
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final listTopPad = isCompact ? 0.0 : topPad + 30;
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final listBottomPad = widget.embedInHome ? 116.0 : 32.0;
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return Stack(
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children: [
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RefreshIndicator(
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onRefresh: _refresh,
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child: ListView(
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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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padding: EdgeInsets.only(
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top: listTopPad,
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bottom: listBottomPad,
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),
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children: [
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Padding(
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padding: EdgeInsets.only(
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top: isCompact ? 0 : 12,
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bottom: 4,
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),
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child: _DiscoverBanner(
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onActiveItem: _onBannerActiveItem,
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onNoBanner: _onNoBanner,
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),
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),
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const TraktContinueWatchingRow(),
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...sections,
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const SizedBox(height: 24),
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],
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),
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),
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Positioned(
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top: 0,
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left: 0,
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right: 0,
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child: ScrollFadeHeader(
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scrollProgress: _scrollProgress,
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actions: [
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SizedBox(
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width: 38,
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height: 38,
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child: IconButton(
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icon: const Icon(Icons.refresh, size: 18),
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tooltip: '刷新',
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padding: EdgeInsets.zero,
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visualDensity: VisualDensity.compact,
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onPressed: () => unawaited(_refresh()),
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),
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),
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],
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),
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),
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if (widget.embedInHome)
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Positioned(
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top: MediaQuery.paddingOf(context).top + 8,
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left: 16,
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child: const ServerDropdownButton(),
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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 _DiscoverSkeleton extends StatelessWidget {
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const _DiscoverSkeleton();
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@override
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Widget build(BuildContext context) {
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final tokens = context.appTokens;
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final isDesktop = Platform.isMacOS || Platform.isWindows;
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final topPad = isDesktop
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? tokens.titleBarHeight
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: math.max(MediaQuery.paddingOf(context).top, tokens.titleBarHeight);
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final isCompact = Breakpoints.isCompact(MediaQuery.sizeOf(context).width);
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final listTopPad = isCompact ? 0.0 : topPad + 30;
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return ListView(
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physics: const AlwaysScrollableScrollPhysics(
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parent: BouncingScrollPhysics(),
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),
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padding: EdgeInsets.only(top: listTopPad, bottom: 32),
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children: [
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Padding(
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padding: EdgeInsets.only(top: isCompact ? 0 : 12, bottom: 4),
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child: const HomeBannerSkeleton(),
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),
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const SkeletonMediaRow(
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||
|
|
title: '继续观看',
|
||
|
|
cardVariant: MediaCardVariant.landscape,
|
||
|
|
titleColor: Colors.white,
|
||
|
|
),
|
||
|
|
const SkeletonMediaRow(title: '今日热门', titleColor: Colors.white),
|
||
|
|
const SkeletonMediaRow(title: '本周热门', titleColor: Colors.white),
|
||
|
|
const SkeletonMediaRow(title: '热门电影', titleColor: Colors.white),
|
||
|
|
const SkeletonMediaRow(title: '热门剧集', titleColor: Colors.white),
|
||
|
|
],
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
class _DiscoverBanner extends ConsumerWidget {
|
||
|
|
|
||
|
|
final void Function(TmdbRecommendation item, String baseUrl) onActiveItem;
|
||
|
|
|
||
|
|
|
||
|
|
final VoidCallback onNoBanner;
|
||
|
|
|
||
|
|
const _DiscoverBanner({required this.onActiveItem, required this.onNoBanner});
|
||
|
|
|
||
|
|
@override
|
||
|
|
Widget build(BuildContext context, WidgetRef ref) {
|
||
|
|
final settings = ref.watch(tmdbSettingsProvider).value;
|
||
|
|
final asyncData = ref.watch(tmdbAiringTodayTvProvider);
|
||
|
|
|
||
|
|
return asyncData.when(
|
||
|
|
loading: () {
|
||
|
|
onNoBanner();
|
||
|
|
return const HomeBannerSkeleton();
|
||
|
|
},
|
||
|
|
error: (_, _) {
|
||
|
|
onNoBanner();
|
||
|
|
return const SizedBox.shrink();
|
||
|
|
},
|
||
|
|
data: (res) {
|
||
|
|
if (res == null || settings == null) {
|
||
|
|
onNoBanner();
|
||
|
|
return const SizedBox.shrink();
|
||
|
|
}
|
||
|
|
final items = res.results
|
||
|
|
.where((e) => e.backdropPath?.isNotEmpty ?? false)
|
||
|
|
.map((e) => e.mediaType == 'tv' ? e : e.copyWith(mediaType: 'tv'))
|
||
|
|
.take(6)
|
||
|
|
.toList();
|
||
|
|
if (items.isEmpty) {
|
||
|
|
onNoBanner();
|
||
|
|
return const SizedBox.shrink();
|
||
|
|
}
|
||
|
|
|
||
|
|
final baseUrl = settings.effectiveImageBaseUrl;
|
||
|
|
return TmdbBannerCarousel(
|
||
|
|
items: items,
|
||
|
|
imageBaseUrl: baseUrl,
|
||
|
|
onActiveItemChanged: (item) => onActiveItem(item, baseUrl),
|
||
|
|
onItemTap: (item) => goTmdbDetail(
|
||
|
|
context,
|
||
|
|
tmdbId: item.id,
|
||
|
|
mediaType: 'tv',
|
||
|
|
seed: item,
|
||
|
|
),
|
||
|
|
);
|
||
|
|
},
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
class _DiscoverSection extends ConsumerWidget {
|
||
|
|
final String title;
|
||
|
|
final ProviderListenable<AsyncValue<TmdbRecommendationsRes?>> provider;
|
||
|
|
final String imageBaseUrl;
|
||
|
|
|
||
|
|
|
||
|
|
final String? fallbackMediaType;
|
||
|
|
|
||
|
|
const _DiscoverSection({
|
||
|
|
required this.title,
|
||
|
|
required this.provider,
|
||
|
|
required this.imageBaseUrl,
|
||
|
|
this.fallbackMediaType,
|
||
|
|
});
|
||
|
|
|
||
|
|
Widget _sectionTitle() => Padding(
|
||
|
|
padding: const EdgeInsets.fromLTRB(24, 16, 24, 4),
|
||
|
|
child: SectionHeader(label: title, labelColor: Colors.white),
|
||
|
|
);
|
||
|
|
|
||
|
|
@override
|
||
|
|
Widget build(BuildContext context, WidgetRef ref) {
|
||
|
|
final asyncData = ref.watch(provider);
|
||
|
|
|
||
|
|
return asyncData.when(
|
||
|
|
loading: () => SkeletonMediaRow(title: title, titleColor: Colors.white),
|
||
|
|
error: (_, _) => const SizedBox.shrink(),
|
||
|
|
data: (res) {
|
||
|
|
if (res == null) return const SizedBox.shrink();
|
||
|
|
|
||
|
|
if (res.results.isEmpty) {
|
||
|
|
return Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
_sectionTitle(),
|
||
|
|
const EmptyState(
|
||
|
|
icon: Icons.movie_filter_outlined,
|
||
|
|
title: '暂无内容',
|
||
|
|
compact: true,
|
||
|
|
),
|
||
|
|
],
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
final items = res.results.length > 20
|
||
|
|
? res.results.sublist(0, 20)
|
||
|
|
: res.results;
|
||
|
|
|
||
|
|
final compact = Breakpoints.isCompact(MediaQuery.sizeOf(context).width);
|
||
|
|
final cardWidth = MediaRowMetrics.cardWidth(
|
||
|
|
MediaCardVariant.poster,
|
||
|
|
compact: compact,
|
||
|
|
);
|
||
|
|
final rowHeight = cardWidth / 0.66 + 46.0;
|
||
|
|
|
||
|
|
return Column(
|
||
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
||
|
|
children: [
|
||
|
|
_sectionTitle(),
|
||
|
|
SizedBox(
|
||
|
|
height: rowHeight,
|
||
|
|
child: HoverScrollableRow(
|
||
|
|
builder: (_, controller) => ListView.separated(
|
||
|
|
controller: controller,
|
||
|
|
scrollDirection: Axis.horizontal,
|
||
|
|
padding: const EdgeInsets.symmetric(horizontal: 24),
|
||
|
|
itemCount: items.length,
|
||
|
|
separatorBuilder: (_, _) => const SizedBox(width: 14),
|
||
|
|
itemBuilder: (_, i) {
|
||
|
|
final item = items[i];
|
||
|
|
final type = item.mediaType ?? fallbackMediaType;
|
||
|
|
final tappable = type == 'movie' || type == 'tv';
|
||
|
|
return TmdbPosterCard(
|
||
|
|
key: ValueKey<String>('$type:${item.id}'),
|
||
|
|
title: item.title,
|
||
|
|
posterPath: item.posterPath,
|
||
|
|
voteAverage: item.voteAverage,
|
||
|
|
mediaTypeLabel: _mediaTypeLabel(item.mediaType),
|
||
|
|
imageBaseUrl: imageBaseUrl,
|
||
|
|
width: cardWidth,
|
||
|
|
textColor: Colors.white,
|
||
|
|
onTap: tappable
|
||
|
|
? () => goTmdbDetail(
|
||
|
|
context,
|
||
|
|
tmdbId: item.id,
|
||
|
|
mediaType: type!,
|
||
|
|
seed: item,
|
||
|
|
)
|
||
|
|
: null,
|
||
|
|
);
|
||
|
|
},
|
||
|
|
),
|
||
|
|
),
|
||
|
|
),
|
||
|
|
],
|
||
|
|
);
|
||
|
|
},
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
static String? _mediaTypeLabel(String? type) => mediaTypeLabel(type);
|
||
|
|
}
|