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

class QRCodeScannerScreen extends StatefulWidget {
  const QRCodeScannerScreen({super.key});

  @override
  _QRCodeScannerScreenState createState() => _QRCodeScannerScreenState();
}

class _QRCodeScannerScreenState extends State<QRCodeScannerScreen> {
  MobileScannerController cameraController = MobileScannerController();
  bool _flashEnabled = false;

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Scan QR Code'),
        actions: [
          IconButton(
            icon: Icon(_flashEnabled ? Icons.flash_on : Icons.flash_off),
            onPressed: () {
              setState(() {
                _flashEnabled = !_flashEnabled;
                cameraController.toggleTorch();
              });
            },
          ),
          IconButton(
            icon: const Icon(Icons.flip_camera_ios),
            onPressed: () => cameraController.switchCamera(),
          ),
        ],
      ),
      body: MobileScanner(
        controller: cameraController,
        onDetect: (capture) {
          final List<Barcode> barcodes = capture.barcodes;
          if (barcodes.isNotEmpty) {
            // Return the first barcode value
            final String? code = barcodes.first.rawValue;
            if (code != null) {
              Navigator.pop(context, code);
            }
          }
        },
      ),
    );
  }
}