import 'package:flutter/material.dart';
import '../models/song.dart';
import '../database/db_helper.dart';
import '../utils/farb_theme.dart';

class MetadatenDialog extends StatefulWidget {
  final Song song;
  const MetadatenDialog({super.key, required this.song});

  @override
  State<MetadatenDialog> createState() => _MetadatenDialogState();
}

class _MetadatenDialogState extends State<MetadatenDialog> {
  late TextEditingController _titelCtrl;
  late TextEditingController _kuenstlerCtrl;
  late TextEditingController _albumCtrl;
  final DbHelper _db = DbHelper();

  @override
  void initState() {
    super.initState();
    _titelCtrl = TextEditingController(text: widget.song.titel);
    _kuenstlerCtrl = TextEditingController(text: widget.song.kuenstler);
    _albumCtrl = TextEditingController(text: widget.song.album);
  }

  @override
  void dispose() {
    _titelCtrl.dispose();
    _kuenstlerCtrl.dispose();
    _albumCtrl.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return AlertDialog(
      backgroundColor: MeloTheme.dunkel1,
      title: const Text('✏️ Metadaten', style: TextStyle(color: Colors.white, fontSize: 18)),
      content: SingleChildScrollView(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            _field('Titel', _titelCtrl),
            const SizedBox(height: 12),
            _field('Künstler', _kuenstlerCtrl),
            const SizedBox(height: 12),
            _field('Album', _albumCtrl),
          ],
        ),
      ),
      actions: [
        TextButton(
          onPressed: () => Navigator.pop(context, false),
          child: const Text('Abbrechen', style: TextStyle(color: Colors.white54)),
        ),
        TextButton(
          onPressed: () => _speichern(),
          child: const Text('Speichern', style: TextStyle(color: MeloTheme.rot)),
        ),
      ],
    );
  }

  Widget _field(String label, TextEditingController ctrl) {
    return TextField(
      controller: ctrl,
      style: const TextStyle(color: Colors.white),
      decoration: InputDecoration(
        labelText: label,
        labelStyle: const TextStyle(color: Colors.grey),
        border: const OutlineInputBorder(),
        focusedBorder: const OutlineInputBorder(
          borderSide: BorderSide(color: MeloTheme.rot),
        ),
      ),
    );
  }

  Future<void> _speichern() async {
    final id = widget.song.id;
    if (id == null) {
      if (mounted) Navigator.pop(context, false);
      return;
    }
    final titel = _titelCtrl.text.trim();
    final kuenstler = _kuenstlerCtrl.text.trim();
    final album = _albumCtrl.text.trim();
    if (titel.isEmpty) {
      ScaffoldMessenger.of(context).showSnackBar(
        const SnackBar(content: Text('Titel darf nicht leer sein')),
      );
      return;
    }

    await _db.metadatenAktualisieren(
      id,
      titel: titel,
      kuenstler: kuenstler,
      album: album,
    );
    if (mounted) Navigator.pop(context, true);
  }
}