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

class ScanScreen extends StatefulWidget {
  final String title;

  const ScanScreen({
    super.key,
    required this.title,
  });

  @override
  State<ScanScreen> createState() => _ScanScreenState();
}

class _ScanScreenState extends State<ScanScreen> {
  final MobileScannerController _controller = MobileScannerController();
  bool _isScanned = false;

  void _handleBarcode(BarcodeCapture capture) {
    if (_isScanned) return;

    final barcode = capture.barcodes.firstOrNull;
    if (barcode != null && barcode.rawValue != null) {
      final code = barcode.rawValue!.trim();
      if (code.isNotEmpty) {
        _isScanned = true;
        _controller.stop();
        Navigator.pop(context, code);
      }
    }
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
        centerTitle: true,
      ),
      body: MobileScanner(
        controller: _controller,
        onDetect: _handleBarcode,
      ),
    );
  }
}