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>? onDelete;

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

  @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: Text(song.titel, style: const TextStyle(fontSize: 14, fontWeight: FontWeight.w500, color: Colors.white)),
      subtitle: Text(song.kuenstler, style: const TextStyle(fontSize: 12, color: MeloTheme.textSekundaer)),
      trailing: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          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: () {
              // Guard gegen null-ID (defensive)
              final id = song.id;
              if (id == null) return;
              showDialog(
                context: context,
                builder: (_) => TagAuswahlDialog(
                  songId: 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: onDelete != null ? () {
        showModalBottomSheet(
          context: context,
          backgroundColor: MeloTheme.dunkel1,
          builder: (ctx) => SafeArea(
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                ListTile(
                  leading: const Icon(Icons.edit, color: Colors.white),
                  title: const Text('Bearbeiten', style: TextStyle(color: Colors.white)),
                  onTap: () async {
                    Navigator.pop(ctx);
                    final geaendert = await showDialog<bool>(
                      context: context,
                      builder: (_) => MetadatenDialog(song: song),
                    );
                    if (geaendert == true) onMetadataChanged();
                  },
                ),
                ListTile(
                  leading: const Icon(Icons.delete, color: Colors.red),
                  title: const Text('Löschen', style: TextStyle(color: Colors.red)),
                  onTap: () {
                    Navigator.pop(ctx);
                    onDelete!(song);
                  },
                ),
              ],
            ),
          ),
        );
      } : null,
    );
  }
}