feat(playlist): 歌单集合页 + 歌单详情页 + 首页入口
style(ui): 播放页红心与标题居中对齐、标题单行 - playlists_page：歌单列表（封面/名称/歌曲数）、新建、重命名、删除 - playlist_detail_page：歌单内歌曲、播放全部、单曲播放、移除 - 首页"歌单列表"按钮接入 PlaylistsPage - 播放页：标题行改为 center 对齐、标题限制单行， 收藏按钮压到 36x36，红心与标题不再错位
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// lib/pages/playlists_page.dart
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import 'package:flutter/material.dart';
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import '../models/playlist_summary.dart';
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import '../repositories/playlist_repository.dart';
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import '../widgets/song_artwork.dart';
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import 'playlist_detail_page.dart';
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/// 歌单集合页：展示所有歌单，支持新建 / 重命名 / 删除
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class PlaylistsPage extends StatefulWidget {
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const PlaylistsPage({super.key});
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@override
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State<PlaylistsPage> createState() => _PlaylistsPageState();
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}
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class _PlaylistsPageState extends State<PlaylistsPage> {
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final PlaylistRepository _repo = PlaylistRepository();
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List<PlaylistSummary> _playlists = [];
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bool _loading = true;
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@override
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void initState() {
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super.initState();
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_load();
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}
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Future<void> _load() async {
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setState(() => _loading = true);
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try {
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final list = await _repo.getSummaries();
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if (!mounted) return;
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setState(() {
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_playlists = list;
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_loading = false;
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});
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} catch (e) {
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if (!mounted) return;
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setState(() => _loading = false);
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(content: Text('读取歌单失败: $e')),
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);
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}
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}
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Future<void> _create() async {
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final name = await _promptName('新建歌单');
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if (name == null || name.isEmpty) return;
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try {
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await _repo.createPlaylist(name);
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await _load();
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} catch (e) {
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if (!mounted) return;
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ScaffoldMessenger.of(context)
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.showSnackBar(SnackBar(content: Text('新建失败: $e')));
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}
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}
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Future<void> _rename(PlaylistSummary playlist) async {
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final name = await _promptName('重命名歌单', initial: playlist.name);
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if (name == null || name.isEmpty) return;
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await _repo.updatePlaylistName(playlist.id, name);
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await _load();
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}
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Future<void> _delete(PlaylistSummary playlist) async {
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final ok = await showDialog<bool>(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: const Color(0xFF1A1F1E),
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title: const Text('删除歌单', style: TextStyle(color: Colors.white)),
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content: Text(
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'删除「${playlist.name}」？歌单内的歌曲不会从网盘删除。',
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style: const TextStyle(color: Colors.grey),
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context, false),
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child: const Text('取消'),
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),
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TextButton(
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onPressed: () => Navigator.pop(context, true),
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child: const Text('删除', style: TextStyle(color: Colors.redAccent)),
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),
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],
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),
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);
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if (ok == true) {
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await _repo.deletePlaylist(playlist.id);
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await _load();
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}
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}
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Future<String?> _promptName(String title, {String initial = ''}) async {
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final controller = TextEditingController(text: initial);
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return showDialog<String>(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: const Color(0xFF1A1F1E),
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title: Text(title, style: const TextStyle(color: Colors.white)),
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content: TextField(
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controller: controller,
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autofocus: true,
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style: const TextStyle(color: Colors.white),
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decoration: const InputDecoration(hintText: '歌单名称'),
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('取消'),
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),
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TextButton(
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onPressed: () => Navigator.pop(context, controller.text.trim()),
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child: const Text('确定'),
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),
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],
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),
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);
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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backgroundColor: const Color(0xFF0E1211),
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appBar: AppBar(
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backgroundColor: Colors.transparent,
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elevation: 0,
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title: const Text('歌单'),
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actions: [
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IconButton(
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icon: const Icon(Icons.add, color: Color(0xFFB8D4D0)),
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tooltip: '新建歌单',
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onPressed: _create,
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),
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],
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),
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body: _loading
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? const Center(child: CircularProgressIndicator())
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: _playlists.isEmpty
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? _buildEmpty()
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: RefreshIndicator(
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onRefresh: _load,
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child: ListView.builder(
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padding: const EdgeInsets.symmetric(
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horizontal: 16, vertical: 8),
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itemCount: _playlists.length,
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itemBuilder: (context, index) {
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final playlist = _playlists[index];
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return ListTile(
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contentPadding:
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const EdgeInsets.symmetric(horizontal: 4),
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visualDensity: VisualDensity.compact,
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leading: SongArtwork(
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filePath: playlist.coverPath,
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size: 52,
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fallbackIcon: Icons.queue_music,
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),
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title: Text(
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playlist.name,
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style: const TextStyle(
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color: Colors.white, fontSize: 16),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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subtitle: Text(
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'${playlist.songCount} 首',
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style: const TextStyle(
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color: Colors.grey, fontSize: 12),
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),
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trailing: PopupMenuButton<String>(
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icon: const Icon(Icons.more_vert,
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color: Colors.white38, size: 20),
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onSelected: (value) {
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if (value == 'rename') _rename(playlist);
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if (value == 'delete') _delete(playlist);
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},
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itemBuilder: (context) => const [
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PopupMenuItem(
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value: 'rename',
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child: Row(
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children: [
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Icon(Icons.edit_outlined,
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color: Color(0xFFB8D4D0), size: 18),
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SizedBox(width: 10),
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Text('重命名'),
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],
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),
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),
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PopupMenuItem(
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value: 'delete',
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child: Row(
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children: [
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Icon(Icons.delete_outline,
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color: Colors.redAccent, size: 18),
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SizedBox(width: 10),
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Text('删除'),
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],
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),
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),
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],
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),
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onTap: () async {
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await Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => PlaylistDetailPage(
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playlistId: playlist.id,
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playlistName: playlist.name,
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),
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),
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);
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await _load();
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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 _buildEmpty() {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(Icons.queue_music, size: 48, color: Colors.grey[700]),
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const SizedBox(height: 14),
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Text(
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'还没有歌单',
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style: TextStyle(color: Colors.grey[500], fontSize: 15),
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),
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const SizedBox(height: 6),
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Text(
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'点右上角 + 新建一个',
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style: TextStyle(color: Colors.grey[700], fontSize: 12),
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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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