import 'dart:io';
import 'package:flutter/material.dart';
import '../models/song.dart';
import '../utils/farb_theme.dart';
import 'metadaten_dialog.dart';
import 'tag_auswahl_dialog.dart';

class SongTile extends StatelessWidget {
  final Song song;
  final bool istFavorit;
  final ValueChanged<Song> onFavoriteToggle;
  final ValueChanged<Song> onPlay;
  final VoidCallback onMetadataChanged;
  final ValueChanged<Song>? onAddToPlaylist;
  final ValueChanged<Song>? onErneutHerunterladen;
  final ValueChanged<Song>? onSpieleAlsNaechstes;
  final ValueChanged<Song>? onAmEndeHinzufuegen;

  const SongTile({
    super.key,
    required this.song,
    required this.istFavorit,
    required this.onFavoriteToggle,
    required this.onPlay,
    required this.onMetadataChanged,
    this.onAddToPlaylist,
    this.onErneutHerunterladen,
    this.onSpieleAlsNaechstes,
    this.onAmEndeHinzufuegen,
  });

  @override
  Widget build(BuildContext context) {
    final hatDatei = song.dateiPfad.isNotEmpty;
    final hatCover = song.coverPfad != null && File(song.coverPfad!).existsSync();
    return ListTile(
      contentPadding: const EdgeInsets.symmetric(vertical: 2),
      leading: ClipRRect(
        borderRadius: BorderRadius.circular(10),
        child: Container(
          width: 44, height: 44,
          decoration: const BoxDecoration(
            gradient: LinearGradient(colors: [Color(0xFF1A0000), Color(0xFF660000)]),
          ),
          child: hatCover
              ? Image.file(File(song.coverPfad!), fit: BoxFit.cover)
              : const Center(child: Text('♪', style: TextStyle(fontSize: 18, color: Colors.white54))),
        ),
      ),
      title: Row(
        children: [
          if (song.istKorrupt)
            const Padding(
              padding: EdgeInsets.only(right: 6),
              child: Text('⚠️', style: TextStyle(fontSize: 16)),
            ),
          Expanded(
            child: Text(
              song.titel,
              style: TextStyle(
                fontSize: 14,
                fontWeight: FontWeight.w500,
                color: song.istKorrupt ? MeloTheme.textSekundaer : Colors.white,
                decoration: song.istKorrupt ? TextDecoration.lineThrough : null,
              ),
            ),
          ),
        ],
      ),
      subtitle: Text(song.kuenstler, style: const TextStyle(fontSize: 12, color: MeloTheme.textSekundaer)),
      trailing: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          // ── Korrupt mit ytUrl: 🔄 Neu laden ──
          if (song.istKorrupt && song.ytUrl != null && onErneutHerunterladen != null)
            InkWell(
              borderRadius: BorderRadius.circular(50),
              onTap: () => onErneutHerunterladen!(song),
              child: const Padding(
                padding: EdgeInsets.all(6),
                child: Text('🔄', style: TextStyle(fontSize: 16)),
              ),
            ),
          InkWell(
            borderRadius: BorderRadius.circular(50),
            onTap: () async {
              final geaendert = await showDialog<bool>(
                context: context,
                builder: (_) => MetadatenDialog(song: song),
              );
              if (geaendert == true) onMetadataChanged();
            },
            child: Padding(
              padding: const EdgeInsets.all(6),
              child: Icon(Icons.edit, size: 14, color: MeloTheme.textSekundaer),
            ),
          ),
          InkWell(
            borderRadius: BorderRadius.circular(50),
            onTap: () => showDialog(
              context: context,
              builder: (_) => TagAuswahlDialog(
                songId: song.id!,
                songTitel: song.titel,
                onChanged: onMetadataChanged,
              ),
            ),
            child: Padding(
              padding: const EdgeInsets.all(6),
              child: const Icon(Icons.label_outline, size: 14, color: MeloTheme.textSekundaer),
            ),
          ),
          if (onAddToPlaylist != null)
            InkWell(
              borderRadius: BorderRadius.circular(50),
              onTap: () => onAddToPlaylist!(song),
              child: Padding(
                padding: const EdgeInsets.all(6),
                child: const Icon(Icons.playlist_add, size: 14, color: MeloTheme.textSekundaer),
              ),
            ),
          InkWell(
            borderRadius: BorderRadius.circular(50),
            onTap: () => onFavoriteToggle(song),
            child: Padding(
              padding: const EdgeInsets.all(6),
              child: Icon(
                istFavorit ? Icons.favorite : Icons.favorite_border,
                size: 16, color: MeloTheme.rot,
              ),
            ),
          ),
          Text(song.dauerFormatiert, style: const TextStyle(fontSize: 12, color: MeloTheme.textSekundaer)),
        ],
      ),
      onTap: hatDatei ? () => onPlay(song) : null,
      onLongPress: (hatDatei && (onSpieleAlsNaechstes != null || onAmEndeHinzufuegen != null))
          ? () => _zeigeKontextMenu(context)
          : null,
    );
  }

  /// Kontextmenü per Long-Press: "Als Nächstes abspielen" + "Am Ende hinzufügen"
  void _zeigeKontextMenu(BuildContext context) {
    showModalBottomSheet(
      context: context,
      backgroundColor: MeloTheme.dunkel1,
      builder: (ctx) => SafeArea(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            ListTile(
              leading: const Icon(Icons.playlist_play, color: MeloTheme.rot, size: 20),
              title: const Text(
                'Als Nächstes abspielen',
                style: TextStyle(color: Colors.white, fontSize: 14),
              ),
              onTap: () {
                Navigator.pop(ctx);
                onSpieleAlsNaechstes?.call(song);
              },
            ),
            if (onAmEndeHinzufuegen != null)
              ListTile(
                leading: const Icon(Icons.playlist_add, color: MeloTheme.rot, size: 20),
                title: const Text(
                  'Am Ende hinzufügen',
                  style: TextStyle(color: Colors.white, fontSize: 14),
                ),
                onTap: () {
                  Navigator.pop(ctx);
                  onAmEndeHinzufuegen!(song);
                },
              ),
          ],
        ),
      ),
    );
  }
}