import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:record/record.dart';
import 'package:path_provider/path_provider.dart';

class AudioRecorderButton extends StatefulWidget {
  final void Function(Uint8List bytes, String nombre) onRecorded;

  const AudioRecorderButton({super.key, required this.onRecorded});

  @override
  State<AudioRecorderButton> createState() => _AudioRecorderButtonState();
}

class _AudioRecorderButtonState extends State<AudioRecorderButton> {
  final _recorder = AudioRecorder();
  bool _isRecording = false;
  int _seconds = 0;
  Timer? _timer;

  @override
  void dispose() {
    _timer?.cancel();
    _recorder.dispose();
    super.dispose();
  }

  Future<void> _toggleRecording() async {
    if (_isRecording) {
      await _stopRecording();
    } else {
      await _startRecording();
    }
  }

  Future<void> _startRecording() async {
    final hasPermission = await _recorder.hasPermission();
    if (!hasPermission) return;

    final dir = await getTemporaryDirectory();
    final path = '${dir.path}/audio_${DateTime.now().millisecondsSinceEpoch}.m4a';

    await _recorder.start(
      const RecordConfig(encoder: AudioEncoder.aacLc),
      path: path,
    );

    setState(() {
      _isRecording = true;
      _seconds = 0;
    });

    _timer = Timer.periodic(const Duration(seconds: 1), (t) {
      setState(() => _seconds++);
    });
  }

  Future<void> _stopRecording() async {
    _timer?.cancel();
    final path = await _recorder.stop();

    setState(() {
      _isRecording = false;
      _seconds = 0;
    });

    if (path != null) {
      final file = File(path);
      final bytes = await file.readAsBytes();
      final nombre = 'audio_${DateTime.now().millisecondsSinceEpoch}.m4a';
      widget.onRecorded(bytes, nombre);
      await file.delete();
    }
  }

  String _formatDuration(int seconds) {
    final mins = seconds ~/ 60;
    final secs = seconds % 60;
    return '${mins.toString().padLeft(2, '0')}:${secs.toString().padLeft(2, '0')}';
  }

  @override
  Widget build(BuildContext context) {
    return FilledButton.tonal(
      onPressed: _toggleRecording,
      style: FilledButton.styleFrom(
        backgroundColor:
            _isRecording ? Theme.of(context).colorScheme.errorContainer : null,
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          Icon(
            _isRecording ? Icons.stop : Icons.mic,
            size: 18,
            color: _isRecording ? Theme.of(context).colorScheme.error : null,
          ),
          const SizedBox(width: 4),
          Text(_isRecording ? _formatDuration(_seconds) : 'Audio'),
        ],
      ),
    );
  }
}