mobile-app/lib/main.dart

import 'package:barcode_scan/barcode_scan.dart';
import 'package:camera/camera.dart';
import 'package:farm_tpf/presentation/screens/plot_detail/sc_plot_detail.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/route_manager.dart';
import 'app.dart';
import 'data/repository/authentication_repository.dart';
import 'data/repository/repository.dart';
import 'presentation/custom_widgets/widget_utils.dart';

List<CameraDescription> cameras = [];
Future<void> main() async {
  // Fetch the available cameras before initializing the app.
  try {
    WidgetsFlutterBinding.ensureInitialized();
    cameras = await availableCameras();
  } on CameraException catch (e) {
    print(e.description);
  }
  runApp(App(authenticationRepository: AuthenticationRepository()));
}

Future<dynamic> myBackgroundMessageHandler(Map<String, dynamic> message) {
  if (message.containsKey('data')) {
    // Handle data message
    final dynamic data = message['data'];
  }

  if (message.containsKey('notification')) {
    // Handle notification message
    final dynamic notification = message['notification'];
  }

  // Or do other work.
}

Future scan(BuildContext context) async {
  var _aspectTolerance = 0.00;
  var _selectedCamera = -1;
  var _useAutoFocus = true;
  var _autoEnableFlash = false;
  var repository = Repository();
  try {
    var options = ScanOptions(
      strings: {
        "cancel": "Huỷ",
        "flash_on": "Bật flash",
        "flash_off": "Tắt flash",
      },
      useCamera: _selectedCamera,
      autoEnableFlash: _autoEnableFlash,
      android: AndroidOptions(
        aspectTolerance: _aspectTolerance,
        useAutoFocus: _useAutoFocus,
      ),
    );
    var result = await BarcodeScanner.scan(options: options);
    print(result.toString());
    if (result.type == ResultType.Cancelled) {
      print("canncel");
    } else if (result.type == ResultType.Error) {
      print("error");
    } else {
      print("show check crop");
      _showAlertCheckCropCode(context, result.rawContent, repository);
    }
  } on PlatformException catch (e) {
    print("error: ${e.message}");
  }
}

_showAlertCheckCropCode(
    BuildContext context, String cropCode, Repository repository) async {
  Get.defaultDialog(
      title: "Kiểm tra thông tin lô ....",
      middleText: "",
      content: CircularProgressIndicator());
  try {
    await repository
        .getPlotDetailByCode(cropCode, page: 1, size: 1)
        .then((value) {
      print("ok");
      if (Get.isDialogOpen) Get.back();
      Get.to(PlotDetailScreen(
          cropId: value.tbCropDTO.id,
          cropType: value.tbCropDTO.type,
          initialIndex: 0));
    }).catchError((onError) {
      Utils.showDialog(
          title: "Không tìm thấy lô",
          message: "Thử lại với mã tem khác?",
          textConfirm: "Thử lại",
          textCancel: "Huỷ",
          onConfirm: () {
            Get.back();
            scan(context);
          });
    });
  } catch (e) {
    Utils.showDialog(
        title: "Không tìm thấy lô",
        message: "Thử lại với mã tem khác?",
        textConfirm: "Thử lại",
        textCancel: "Huỷ",
        onConfirm: () {
          Get.back();
          scan(context);
        });
  }
}