minstrel/flutter_client/lib/library/album_detail_screen.dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../api/endpoints/likes.dart';
import '../models/album.dart';
import '../cache/audio_cache_manager.dart';
import '../cache/db.dart';
import '../likes/like_button.dart';
import '../player/player_provider.dart';
import '../shared/widgets/server_image.dart';
import '../theme/theme_extension.dart';
import 'library_providers.dart';
import 'widgets/track_row.dart';

class AlbumDetailScreen extends ConsumerWidget {
  const AlbumDetailScreen({required this.id, this.seed, super.key});
  final String id;

  /// Optional album reference passed by the caller (typically the
  /// tile they tapped) so the header can render immediately while
  /// the full provider loads tracks. Hydration only — provider data
  /// still wins once it arrives.
  final AlbumRef? seed;

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final fs = Theme.of(context).extension<FabledSwordTheme>()!;
    final live = ref.watch(albumProvider(id));

    // Pick the best header info available: live data > seed > nothing.
    final headerTitle = live.value?.album.title.isNotEmpty == true
        ? live.value!.album.title
        : seed?.title ?? '';
    final headerArtist = live.value?.album.artistName.isNotEmpty == true
        ? live.value!.album.artistName
        : seed?.artistName ?? '';

    Widget header() => Padding(
          padding: const EdgeInsets.all(16),
          child: Row(children: [
            ClipRRect(
              borderRadius: BorderRadius.circular(6),
              child: SizedBox(
                width: 96,
                height: 96,
                child: ServerImage(
                  url: '/api/albums/$id/cover',
                  fit: BoxFit.cover,
                  fallback: Container(color: fs.slate),
                ),
              ),
            ),
            const SizedBox(width: 16),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    headerTitle,
                    style: TextStyle(
                      color: fs.parchment,
                      fontFamily: fs.display.fontFamily,
                      fontSize: 22,
                    ),
                  ),
                  if (headerArtist.isNotEmpty)
                    Text(headerArtist, style: TextStyle(color: fs.ash)),
                ],
              ),
            ),
          ]),
        );

    return Scaffold(
      appBar: AppBar(),
      backgroundColor: fs.obsidian,
      body: live.when(
            error: (e, _) => Center(child: Text('$e', style: TextStyle(color: fs.error))),
            loading: () => seed != null
                ? ListView(children: [
                    header(),
                    const Padding(
                      padding: EdgeInsets.symmetric(vertical: 24),
                      child: Center(child: CircularProgressIndicator()),
                    ),
                  ])
                : const Center(child: CircularProgressIndicator()),
            data: (r) => ListView(children: [
              Padding(
                padding: const EdgeInsets.all(16),
                child: Row(children: [
                  ClipRRect(
                    borderRadius: BorderRadius.circular(6),
                    child: SizedBox(
                      width: 96,
                      height: 96,
                      child: ServerImage(
                        url: '/api/albums/$id/cover',
                        fit: BoxFit.cover,
                        fallback: Container(color: fs.slate),
                      ),
                    ),
                  ),
                  const SizedBox(width: 16),
                  Expanded(child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Text(r.album.title, style: TextStyle(
                        color: fs.parchment,
                        fontFamily: fs.display.fontFamily,
                        fontSize: 22,
                      )),
                      Text(r.album.artistName, style: TextStyle(color: fs.ash)),
                    ],
                  )),
                  IconButton(
                    key: const Key('download_album_button'),
                    icon: Icon(Icons.download, color: fs.ash),
                    tooltip: 'Download album',
                    onPressed: () {
                      final mgr = ref.read(audioCacheManagerProvider);
                      for (final t in r.tracks) {
                        // ignore: unawaited_futures
                        mgr.pin(t.id, source: CacheSource.autoPlaylist);
                      }
                      ScaffoldMessenger.of(context).showSnackBar(
                        SnackBar(content: Text('Downloading ${r.tracks.length} tracks…')),
                      );
                    },
                  ),
                  Container(
                    width: 48, height: 48,
                    decoration: BoxDecoration(color: fs.accent, shape: BoxShape.circle),
                    child: IconButton(
                      icon: Icon(Icons.play_arrow, color: fs.parchment),
                      onPressed: () => ref.read(playerActionsProvider).playTracks(r.tracks),
                    ),
                  ),
                  LikeButton(kind: LikeKind.album, id: r.album.id, size: 28),
                ]),
              ),
              for (final t in r.tracks)
                TrackRow(
                  track: t,
                  onTap: () {
                    final start = r.tracks.indexOf(t);
                    ref.read(playerActionsProvider).playTracks(r.tracks, initialIndex: start);
                  },
                  trailing: LikeButton(kind: LikeKind.track, id: t.id),
                ),
            ]),
          ),
    );
  }
}