generated from dellevin/template
638 lines
23 KiB
Dart
638 lines
23 KiB
Dart
import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../providers/app_provider.dart';
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import '../models/data_models.dart';
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import '../widgets/fade_in_local_image.dart';
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import '../utils/toast_util.dart';
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import 'movies/movie_detail_page.dart';
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import 'book/book_detail_page.dart';
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import 'note/note_detail_page.dart';
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/// 漫步页面 - 随机发现内容
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class StrollPage extends StatefulWidget {
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const StrollPage({super.key});
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@override
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State<StrollPage> createState() => _StrollPageState();
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}
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class _StrollPageState extends State<StrollPage> {
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final _random = Random();
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final List<_StrollItem> _items = [];
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final Set<String> _seenIds = {};
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late PageController _pageController;
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String _filter = 'all'; // all / movie / book / note
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@override
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void initState() {
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super.initState();
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_pageController = PageController(viewportFraction: 0.78);
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_loadBatch(5);
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}
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@override
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void dispose() {
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_pageController.dispose();
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super.dispose();
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}
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// ─── 数据加载 ───
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void _loadBatch(int count) {
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final provider = context.read<AppProvider>();
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// 按类别分池
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final moviePool = <_StrollItem>[];
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final bookPool = <_StrollItem>[];
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final notePool = <_StrollItem>[];
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if (_filter == 'all' || _filter == 'movie') {
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for (final m in provider.movies.where((m) => !m.isDeleted)) {
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moviePool.add(_StrollItem(
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type: 'movie', data: m, id: 'm_${m.id}',
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title: m.title,
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subtitle: m.alternateTitles.take(2).join(' / '),
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detail: _movieDetail(m),
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imagePath: m.posterPath,
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icon: Icons.movie_outlined, label: '影视',
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rating: m.rating, createdAt: m.createdAt,
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tags: m.genres.take(3).toList(),
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color: const Color(0xFF4A90D9),
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));
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}
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}
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if (_filter == 'all' || _filter == 'book') {
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for (final b in provider.books.where((b) => !b.isDeleted)) {
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bookPool.add(_StrollItem(
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type: 'book', data: b, id: 'b_${b.id}',
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title: b.title,
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subtitle: b.authors.take(2).join(' / '),
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detail: _bookDetail(b),
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imagePath: b.coverPath,
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icon: Icons.menu_book_outlined, label: '书籍',
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rating: b.rating, createdAt: b.createdAt,
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tags: b.genres.take(3).toList(),
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color: const Color(0xFF7E57C2),
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));
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}
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}
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if (_filter == 'all' || _filter == 'note') {
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for (final n in provider.notes.where((n) => !n.isDeleted)) {
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notePool.add(_StrollItem(
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type: 'note', data: n, id: 'n_${n.id}',
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title: n.title.isNotEmpty ? n.title : '随手记',
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subtitle: n.tags.take(3).join(' · '),
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detail: n.content,
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imagePath: n.images.isNotEmpty ? n.images.first : null,
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icon: Icons.note_outlined, label: '笔记',
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createdAt: n.createdAt,
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tags: n.tags.take(3).toList(),
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color: const Color(0xFF66BB6A),
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));
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}
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}
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// 构建非空类别列表
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final pools = <List<_StrollItem>>[];
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if (moviePool.isNotEmpty) pools.add(moviePool);
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if (bookPool.isNotEmpty) pools.add(bookPool);
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if (notePool.isNotEmpty) pools.add(notePool);
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if (pools.isEmpty) return;
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// 全部模式下等概率选类别，单类别模式下直接选
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final target = _items.length + count;
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int attempts = 0;
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while (_items.length < target && attempts < count * 20) {
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attempts++;
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final pool = _filter == 'all'
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? pools[_random.nextInt(pools.length)]
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: pools.first;
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final item = _weightedPick(pool);
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if (item != null && !_seenIds.contains(item.id)) {
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_seenIds.add(item.id);
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_items.add(item);
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}
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}
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}
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/// 加权随机：评分越高权重越大
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_StrollItem? _weightedPick(List<_StrollItem> pool) {
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if (pool.isEmpty) return null;
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final weights = pool.map((item) {
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final r = item.rating ?? 5.0;
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return r.clamp(1.0, 10.0);
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}).toList();
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final total = weights.reduce((a, b) => a + b);
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var roll = _random.nextDouble() * total;
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for (int i = 0; i < pool.length; i++) {
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roll -= weights[i];
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if (roll <= 0) return pool[i];
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}
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return pool.last;
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}
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void _reshuffle() {
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setState(() {
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_items.clear();
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_seenIds.clear();
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_loadBatch(5);
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});
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}
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// ─── 辅助方法 ───
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String _movieDetail(Movie m) {
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final parts = <String>[];
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if (m.summary != null && m.summary!.isNotEmpty) {
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parts.add(m.summary!.length > 100 ? '${m.summary!.substring(0, 100)}...' : m.summary!);
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}
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return parts.join('\n');
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}
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String _bookDetail(Book b) {
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final parts = <String>[];
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if (b.publisher != null && b.publisher!.isNotEmpty) parts.add(b.publisher!);
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if (b.summary != null && b.summary!.isNotEmpty) {
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parts.add(b.summary!.length > 100 ? '${b.summary!.substring(0, 100)}...' : b.summary!);
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}
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return parts.join('\n');
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}
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String _timeAgoText(DateTime date) {
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final diff = DateTime.now().difference(date);
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if (diff.inDays >= 365) return '${(diff.inDays / 365).floor()}年前';
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if (diff.inDays >= 30) return '${(diff.inDays / 30).floor()}个月前';
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if (diff.inDays > 0) return '${diff.inDays}天前';
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if (diff.inHours > 0) return '${diff.inHours}小时前';
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return '刚刚';
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}
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String _actionVerb(String type) {
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switch (type) {
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case 'movie': return '看过';
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case 'book': return '读过';
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case 'note': return '写下';
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default: return '';
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}
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}
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void _openDetail(_StrollItem item) {
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switch (item.type) {
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case 'movie':
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Navigator.push(context, MaterialPageRoute(builder: (_) => MovieDetailPage(movie: item.data as Movie)));
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case 'book':
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Navigator.push(context, MaterialPageRoute(builder: (_) => BookDetailPage(book: item.data as Book)));
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case 'note':
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Navigator.push(context, MaterialPageRoute(builder: (_) => NoteDetailPage(note: item.data as Note)));
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}
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}
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void _deleteItem(_StrollItem item) async {
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final provider = context.read<AppProvider>();
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switch (item.type) {
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case 'movie': await provider.removeMovie(item.data.id);
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case 'book': await provider.removeBook(item.data.id);
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case 'note': await provider.removeNote(item.data.id);
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}
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setState(() => _items.remove(item));
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if (mounted) ToastUtil.show(context, '已删除');
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}
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// ─── 界面 ───
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@override
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Widget build(BuildContext context) {
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final colors = Theme.of(context).colorScheme;
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final hasContent = _items.isNotEmpty;
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return Scaffold(
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backgroundColor: colors.surface,
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body: Column(
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children: [
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// 顶部栏
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_buildTopBar(colors),
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// 类型筛选
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_buildFilterBar(colors),
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// 内容
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Expanded(
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child: !hasContent
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? _buildEmptyState(colors)
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: RefreshIndicator(
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onRefresh: () async => _reshuffle(),
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color: colors.primary,
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child: PageView.builder(
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controller: _pageController,
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onPageChanged: (index) {
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if (index >= _items.length - 2) {
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setState(() => _loadBatch(3));
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}
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},
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itemCount: _items.length,
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itemBuilder: (context, index) {
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return AnimatedBuilder(
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animation: _pageController,
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builder: (context, child) {
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double scale = 1.0;
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if (_pageController.hasClients && _pageController.page != null) {
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final diff = (_pageController.page! - index).abs();
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scale = (1 - diff * 0.08).clamp(0.88, 1.0);
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}
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return Transform.scale(scale: scale, child: child);
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},
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child: _buildCard(_items[index], colors),
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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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Widget _buildTopBar(ColorScheme colors) {
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return SafeArea(
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bottom: false,
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child: Padding(
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padding: const EdgeInsets.fromLTRB(16, 8, 16, 0),
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child: Row(
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children: [
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IconButton(
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onPressed: () => Navigator.pop(context),
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icon: Icon(Icons.arrow_back_ios_new, size: 20, color: colors.onSurface.withValues(alpha: 0.7)),
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),
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const Spacer(),
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Text('漫步', style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: colors.onSurface)),
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const Spacer(),
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GestureDetector(
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onTap: _reshuffle,
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(color: colors.primary, borderRadius: BorderRadius.circular(16)),
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child: Row(mainAxisSize: MainAxisSize.min, children: [
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Icon(Icons.casino_outlined, size: 14, color: colors.onPrimary),
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const SizedBox(width: 4),
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Text('随机', style: TextStyle(fontSize: 12, color: colors.onPrimary, fontWeight: FontWeight.w500)),
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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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Widget _buildFilterBar(ColorScheme colors) {
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final filters = [
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('all', '全部', Icons.apps_outlined),
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('movie', '影视', Icons.movie_outlined),
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('book', '书籍', Icons.menu_book_outlined),
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('note', '笔记', Icons.note_outlined),
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];
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return Padding(
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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child: Row(
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children: filters.map((f) {
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final selected = _filter == f.$1;
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return Padding(
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padding: const EdgeInsets.only(right: 8),
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child: GestureDetector(
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onTap: () {
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if (_filter != f.$1) {
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setState(() {
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_filter = f.$1;
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_items.clear();
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_seenIds.clear();
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_loadBatch(5);
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});
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}
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},
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 14, vertical: 7),
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decoration: BoxDecoration(
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color: selected ? colors.primary : colors.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(20),
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),
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child: Row(mainAxisSize: MainAxisSize.min, children: [
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Icon(f.$3, size: 14, color: selected ? colors.onPrimary : colors.onSurface.withValues(alpha: 0.5)),
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const SizedBox(width: 4),
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Text(f.$2, style: TextStyle(fontSize: 12, fontWeight: selected ? FontWeight.w600 : FontWeight.normal,
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color: selected ? colors.onPrimary : colors.onSurface.withValues(alpha: 0.5))),
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]),
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),
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),
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);
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}).toList(),
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),
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);
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}
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Widget _buildCard(_StrollItem item, ColorScheme colors) {
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final hasImage = item.imagePath != null && item.imagePath!.isNotEmpty;
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return GestureDetector(
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onTap: () => _openDetail(item),
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onDoubleTap: () => ToastUtil.show(context, '已收藏'),
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child: hasImage ? _buildImmersiveCard(item, colors) : _buildContentCard(item, colors),
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);
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}
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/// 有图片的卡片：全屏沉浸式
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Widget _buildImmersiveCard(_StrollItem item, ColorScheme colors) {
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return Container(
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margin: const EdgeInsets.symmetric(vertical: 56, horizontal: 8),
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(20),
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boxShadow: [BoxShadow(color: Colors.black.withValues(alpha: 0.1), blurRadius: 20, offset: const Offset(0, 8))],
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),
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clipBehavior: Clip.antiAlias,
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child: Stack(
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fit: StackFit.expand,
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children: [
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FadeInLocalImage(path: item.imagePath, fit: BoxFit.cover),
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// 底部渐变蒙层
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Positioned.fill(
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child: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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colors: [Colors.transparent, Colors.black.withValues(alpha: 0.85)],
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begin: Alignment.topCenter, end: Alignment.bottomCenter, stops: const [0.3, 0.7],
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),
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),
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),
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),
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// 顶部标签 + 评分
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Positioned(
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top: 16, left: 16, right: 16,
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child: _buildTopBadges(item),
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),
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// 底部内容
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Positioned(
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left: 20, right: 20, bottom: 20,
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child: _buildBottomContent(item, Colors.white),
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),
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],
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),
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);
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}
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/// 无图片的卡片：内容从顶部开始
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Widget _buildContentCard(_StrollItem item, ColorScheme colors) {
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return Container(
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margin: const EdgeInsets.symmetric(vertical: 56, horizontal: 8),
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decoration: BoxDecoration(
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color: colors.surface,
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borderRadius: BorderRadius.circular(20),
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border: Border.all(color: colors.outlineVariant, width: 0.5),
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boxShadow: [BoxShadow(color: Colors.black.withValues(alpha: 0.06), blurRadius: 16, offset: const Offset(0, 4))],
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),
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child: Padding(
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padding: const EdgeInsets.all(20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 顶部标签 + 评分
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_buildTopBadges(item, textColor: colors.onSurface, bgColor: item.color.withValues(alpha: 0.1)),
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const SizedBox(height: 16),
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// 内容
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Expanded(
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child: SingleChildScrollView(
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physics: const BouncingScrollPhysics(),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标签
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if (item.tags.isNotEmpty)
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Padding(
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padding: const EdgeInsets.only(bottom: 12),
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child: Wrap(
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spacing: 6,
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children: item.tags.take(3).map((tag) => Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
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decoration: BoxDecoration(
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color: item.color.withValues(alpha: 0.08),
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borderRadius: BorderRadius.circular(12),
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),
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child: Text(tag, style: TextStyle(fontSize: 11, color: item.color)),
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)).toList(),
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),
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),
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// 标题
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Text(item.title, maxLines: 2, overflow: TextOverflow.ellipsis,
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style: TextStyle(fontSize: 20, fontWeight: FontWeight.w700, color: colors.onSurface, height: 1.3)),
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// 副标题
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if (item.subtitle.isNotEmpty) ...[
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const SizedBox(height: 4),
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Text(item.subtitle, maxLines: 1, overflow: TextOverflow.ellipsis,
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style: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.5))),
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],
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// 详情
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if (item.detail.isNotEmpty) ...[
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const SizedBox(height: 12),
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Text(item.detail, maxLines: 6, overflow: TextOverflow.ellipsis,
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style: TextStyle(fontSize: 13, color: colors.onSurface.withValues(alpha: 0.55), height: 1.7)),
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],
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],
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),
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),
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),
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const SizedBox(height: 12),
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// 操作栏
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Row(children: [
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Text('${_timeAgoText(item.createdAt)} ${_actionVerb(item.type)}',
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style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.3))),
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const Spacer(),
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_actionBtn(Icons.visibility_outlined, '查看', () => _openDetail(item), colors: colors),
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const SizedBox(width: 8),
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_actionBtn(Icons.delete_outline, '删除', () => _showDeleteConfirm(item), colors: colors),
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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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/// 顶部类型标签 + 评分
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Widget _buildTopBadges(_StrollItem item, {Color? textColor, Color? bgColor}) {
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final fg = textColor ?? Colors.white;
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final bg = bgColor ?? Colors.black.withValues(alpha: 0.3);
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return Row(children: [
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
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decoration: BoxDecoration(color: bg, borderRadius: BorderRadius.circular(20)),
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child: Row(mainAxisSize: MainAxisSize.min, children: [
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Icon(item.icon, size: 14, color: fg),
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const SizedBox(width: 4),
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Text(item.label, style: TextStyle(fontSize: 12, fontWeight: FontWeight.w600, color: fg)),
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]),
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),
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const Spacer(),
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if (item.rating != null)
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Container(
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padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
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decoration: BoxDecoration(color: bg, borderRadius: BorderRadius.circular(20)),
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child: Row(mainAxisSize: MainAxisSize.min, children: [
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const Icon(Icons.star, size: 14, color: Color(0xFFFFB800)),
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const SizedBox(width: 3),
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Text(item.rating!.toStringAsFixed(1), style: TextStyle(fontSize: 12, fontWeight: FontWeight.w600, color: fg)),
|
|
]),
|
|
),
|
|
]);
|
|
}
|
|
|
|
/// 底部内容（沉浸式卡片用，白色文字）
|
|
Widget _buildBottomContent(_StrollItem item, Color textColor) {
|
|
return Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
if (item.tags.isNotEmpty)
|
|
Padding(
|
|
padding: const EdgeInsets.only(bottom: 10),
|
|
child: Wrap(
|
|
spacing: 6,
|
|
children: item.tags.take(3).map((tag) => Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 3),
|
|
decoration: BoxDecoration(
|
|
color: Colors.white.withValues(alpha: 0.15),
|
|
borderRadius: BorderRadius.circular(12),
|
|
border: Border.all(color: Colors.white.withValues(alpha: 0.2), width: 0.5),
|
|
),
|
|
child: Text(tag, style: TextStyle(fontSize: 11, color: Colors.white.withValues(alpha: 0.8))),
|
|
)).toList(),
|
|
),
|
|
),
|
|
|
|
Text(item.title, maxLines: 2, overflow: TextOverflow.ellipsis,
|
|
style: TextStyle(fontSize: 22, fontWeight: FontWeight.w700, color: textColor, height: 1.3)),
|
|
|
|
if (item.subtitle.isNotEmpty) ...[
|
|
const SizedBox(height: 4),
|
|
Text(item.subtitle, maxLines: 1, overflow: TextOverflow.ellipsis,
|
|
style: TextStyle(fontSize: 14, color: textColor.withValues(alpha: 0.6))),
|
|
],
|
|
|
|
if (item.detail.isNotEmpty) ...[
|
|
const SizedBox(height: 10),
|
|
Text(item.detail, maxLines: 3, overflow: TextOverflow.ellipsis,
|
|
style: TextStyle(fontSize: 13, color: textColor.withValues(alpha: 0.5), height: 1.6)),
|
|
],
|
|
|
|
const SizedBox(height: 16),
|
|
|
|
Row(children: [
|
|
Text('${_timeAgoText(item.createdAt)} ${_actionVerb(item.type)}',
|
|
style: TextStyle(fontSize: 12, color: textColor.withValues(alpha: 0.4))),
|
|
const Spacer(),
|
|
_actionBtn(Icons.visibility_outlined, '查看', () => _openDetail(item)),
|
|
const SizedBox(width: 12),
|
|
_actionBtn(Icons.delete_outline, '删除', () => _showDeleteConfirm(item)),
|
|
]),
|
|
],
|
|
);
|
|
}
|
|
|
|
Widget _actionBtn(IconData icon, String label, VoidCallback onTap, {ColorScheme? colors}) {
|
|
final fg = colors?.onSurface ?? Colors.white;
|
|
final bg = colors != null ? colors.surfaceContainerHighest : Colors.white.withValues(alpha: 0.12);
|
|
final border = colors != null ? colors.outlineVariant : Colors.white.withValues(alpha: 0.15);
|
|
return GestureDetector(
|
|
onTap: onTap,
|
|
child: Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
|
|
decoration: BoxDecoration(
|
|
color: bg,
|
|
borderRadius: BorderRadius.circular(20),
|
|
border: Border.all(color: border, width: 0.5),
|
|
),
|
|
child: Row(mainAxisSize: MainAxisSize.min, children: [
|
|
Icon(icon, size: 14, color: fg.withValues(alpha: 0.8)),
|
|
const SizedBox(width: 4),
|
|
Text(label, style: TextStyle(fontSize: 12, color: fg.withValues(alpha: 0.8))),
|
|
]),
|
|
),
|
|
);
|
|
}
|
|
|
|
void _showDeleteConfirm(_StrollItem item) {
|
|
final colors = Theme.of(context).colorScheme;
|
|
showDialog(
|
|
context: context,
|
|
builder: (ctx) => AlertDialog(
|
|
backgroundColor: colors.surface, elevation: 0,
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
|
|
title: Text('确认删除', style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600, color: colors.onSurface)),
|
|
content: Text('确定要删除"${item.title}"吗？删除后可在回收站恢复。',
|
|
style: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.6), height: 1.5)),
|
|
actions: [
|
|
TextButton(onPressed: () => Navigator.pop(ctx), child: Text('取消', style: TextStyle(color: colors.onSurface.withValues(alpha: 0.6)))),
|
|
ElevatedButton(
|
|
onPressed: () { Navigator.pop(ctx); _deleteItem(item); },
|
|
style: ElevatedButton.styleFrom(backgroundColor: colors.error, foregroundColor: colors.onError, elevation: 0,
|
|
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)), padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8)),
|
|
child: const Text('删除'),
|
|
),
|
|
],
|
|
actionsPadding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildEmptyState(ColorScheme colors) {
|
|
return Center(
|
|
child: Column(
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
Container(width: 80, height: 80,
|
|
decoration: BoxDecoration(color: colors.surfaceContainerHighest, borderRadius: BorderRadius.circular(20)),
|
|
child: Icon(Icons.explore_outlined, size: 40, color: colors.onSurface.withValues(alpha: 0.2))),
|
|
const SizedBox(height: 20),
|
|
Text('还没有内容', style: TextStyle(fontSize: 16, fontWeight: FontWeight.w500, color: colors.onSurface.withValues(alpha: 0.4))),
|
|
const SizedBox(height: 8),
|
|
Text('去添加一些影视、书籍或笔记吧', style: TextStyle(fontSize: 13, color: colors.onSurface.withValues(alpha: 0.25))),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class _StrollItem {
|
|
final String type;
|
|
final dynamic data;
|
|
final String id;
|
|
final String title;
|
|
final String subtitle;
|
|
final String detail;
|
|
final String? imagePath;
|
|
final IconData icon;
|
|
final String label;
|
|
final double? rating;
|
|
final DateTime createdAt;
|
|
final List<String> tags;
|
|
final Color color;
|
|
|
|
_StrollItem({
|
|
required this.type,
|
|
required this.data,
|
|
required this.id,
|
|
required this.title,
|
|
required this.subtitle,
|
|
required this.detail,
|
|
this.imagePath,
|
|
required this.icon,
|
|
required this.label,
|
|
this.rating,
|
|
required this.createdAt,
|
|
this.tags = const [],
|
|
required this.color,
|
|
});
|
|
}
|