mobile-music/lib/screens/downloads_screen.dart
2026-08-16 12:46:30 -04:00

337 lines
12 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../downloads/download_manager.dart';
import '../state/providers.dart';
import '../theme/tokens.dart';
import '../widgets/art_image.dart';
import '../widgets/hairline_panel.dart';
import '../widgets/toast.dart';
/// Manage offline downloads: what's saved, how much space it uses, and any
/// in-flight transfers. Tapping a completed track plays it.
class DownloadsScreen extends ConsumerWidget {
const DownloadsScreen({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final downloads = ref.watch(downloadManagerProvider);
final controller = ref.read(downloadManagerProvider.notifier);
final playback = ref.read(playbackCommandsProvider);
final active = downloads.byId.values.where((d) => d.isActive).toList();
final completed = downloads.completed;
// Ordered play list — index i here matches the i-th rendered saved row.
final savedSongs = completed.map((d) => d.song).toList();
return Scaffold(
appBar: AppBar(
title: const Text(
'Downloads',
style: TextStyle(fontWeight: FontWeight.w700),
),
actions: [
if (completed.isNotEmpty)
TextButton(
onPressed: () => _confirmClear(context, controller),
child: Text(
'Clear all',
style: TextStyle(color: TimbreColors.dimmed),
),
),
],
),
body: SafeArea(
child: (active.isEmpty && completed.isEmpty)
? Center(
child: Text(
'No downloads yet.',
style: TextStyle(color: TimbreColors.dimmed),
),
)
: ListView(
padding: const EdgeInsets.all(TimbreSpacing.lg),
children: [
if (active.isNotEmpty) ...[
HairlinePanel(
title: 'Downloading',
trailing: '(${active.length})',
padding: const EdgeInsets.symmetric(
vertical: TimbreSpacing.md,
),
child: Column(
children: [for (final d in active) _ActiveRow(info: d)],
),
),
const SizedBox(height: TimbreSpacing.xl),
],
HairlinePanel(
title: 'Saved',
active: true,
trailing: completed.isEmpty
? null
: '${completed.length} · ${_fmtBytes(downloads.totalBytes)}',
action: Row(
mainAxisSize: MainAxisSize.min,
children: [
InkWell(
onTap: savedSongs.isEmpty
? null
: () => playback.playSongs(savedSongs),
child: Padding(
padding: const EdgeInsets.all(TimbreSpacing.xs),
child: Icon(
Icons.play_arrow,
size: 18,
color: TimbreColors.dimmed,
),
),
),
InkWell(
onTap: savedSongs.isEmpty
? null
: () {
playback.toggleShuffle();
playback.playSongs(savedSongs);
},
child: Padding(
padding: const EdgeInsets.all(TimbreSpacing.xs),
child: Icon(
Icons.shuffle,
size: 18,
color: TimbreColors.dimmed,
),
),
),
],
),
padding: const EdgeInsets.symmetric(
vertical: TimbreSpacing.md,
),
child: completed.isEmpty
? Padding(
padding: EdgeInsets.all(TimbreSpacing.lg),
child: Text(
'Nothing saved for offline yet.',
style: TextStyle(color: TimbreColors.dimmed),
),
)
: Column(
children: [
for (final (i, d) in completed.indexed)
_SavedRow(
info: d,
artUri: resolveArtUriW(
ref,
coverArt: d.song.coverArt,
size: 128,
)?.toString(),
onPlay: () => playback.playSongs(
savedSongs,
startIndex: i,
),
onPlayNext: () => playback.playNext(d.song),
onAddToQueue: () =>
playback.addToQueue(d.song),
onRemove: () => controller.remove(d.song.id),
),
],
),
),
],
),
),
);
}
Future<void> _confirmClear(
BuildContext context,
DownloadController controller,
) async {
final ok = await showDialog<bool>(
context: context,
builder: (ctx) => AlertDialog(
backgroundColor: TimbreColors.surface,
title: const Text('Remove all downloads?'),
content: const Text(
'This deletes every saved file for this server. It cannot be undone.',
),
actions: [
TextButton(
onPressed: () => Navigator.pop(ctx, false),
child: const Text('Cancel'),
),
TextButton(
onPressed: () => Navigator.pop(ctx, true),
child: const Text('Remove all'),
),
],
),
);
if (ok == true) await controller.clearAll();
}
}
class _ActiveRow extends StatelessWidget {
const _ActiveRow({required this.info});
final DownloadInfo info;
@override
Widget build(BuildContext context) {
final accent = Theme.of(context).colorScheme.primary;
final failed = info.status == DownloadStatus.failed;
return Padding(
padding: const EdgeInsets.symmetric(
horizontal: TimbreSpacing.lg,
vertical: TimbreSpacing.xs,
),
child: Row(
children: [
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
info.song.title ?? 'Untitled',
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: TextStyle(color: TimbreColors.foreground),
),
const SizedBox(height: TimbreSpacing.xs),
if (failed)
const Text(
'Failed',
style: TextStyle(color: Color(0xFFE06C75), fontSize: 12),
)
else
LinearProgressIndicator(
value: info.progress > 0 ? info.progress : null,
minHeight: 3,
backgroundColor: TimbreColors.border,
color: accent,
),
],
),
),
const SizedBox(width: TimbreSpacing.md),
Text(
failed
? '—'
: (info.status == DownloadStatus.queued ? 'Queued' : ''),
style: TextStyle(color: TimbreColors.dimmed, fontSize: 12),
),
],
),
);
}
}
class _SavedRow extends StatelessWidget {
const _SavedRow({
required this.info,
required this.artUri,
required this.onPlay,
required this.onPlayNext,
required this.onAddToQueue,
required this.onRemove,
});
final DownloadInfo info;
/// Resolved cover-art URI (downloaded art is local, so it shows offline).
final String? artUri;
final VoidCallback onPlay;
final VoidCallback onPlayNext;
final VoidCallback onAddToQueue;
final VoidCallback onRemove;
@override
Widget build(BuildContext context) {
final quality =
info.format ??
(info.bitRate != null ? '${info.bitRate} kbps' : 'Original');
return InkWell(
onTap: onPlay,
child: Container(
constraints: const BoxConstraints(
minHeight: TimbreSpacing.minTouchTarget,
),
padding: const EdgeInsets.only(left: TimbreSpacing.lg),
child: Row(
children: [
ArtImage(
artUri,
width: 40,
height: 40,
fit: BoxFit.cover,
borderRadius: BorderRadius.circular(4),
),
const SizedBox(width: TimbreSpacing.md),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
info.song.title ?? 'Untitled',
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: TextStyle(color: TimbreColors.foreground),
),
Text(
[
info.song.artist,
'$quality · ${_fmtBytes(info.sizeBytes ?? 0)}',
].where((e) => e != null && e.isNotEmpty).join(' · '),
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: TextStyle(color: TimbreColors.dimmed, fontSize: 12),
),
],
),
),
PopupMenuButton<String>(
icon: Icon(Icons.more_vert, size: 20, color: TimbreColors.dimmed),
color: TimbreColors.surface,
onSelected: (v) {
switch (v) {
case 'next':
onPlayNext();
showToast(context, 'Playing next', icon: Icons.check);
case 'queue':
onAddToQueue();
showToast(context, 'Added to queue', icon: Icons.check);
case 'remove':
onRemove();
}
},
itemBuilder: (_) => [
const PopupMenuItem(value: 'next', child: Text('Play next')),
const PopupMenuItem(
value: 'queue',
child: Text('Add to queue'),
),
const PopupMenuItem(
value: 'remove',
child: Text('Remove download'),
),
],
),
],
),
),
);
}
}
String _fmtBytes(int bytes) {
if (bytes <= 0) return '0 MB';
const units = ['B', 'KB', 'MB', 'GB'];
var size = bytes.toDouble();
var i = 0;
while (size >= 1024 && i < units.length - 1) {
size /= 1024;
i++;
}
return '${size.toStringAsFixed(size >= 10 || i == 0 ? 0 : 1)} ${units[i]}';
}