migrate initial

lib/core/base/base_service.dart

@@ -3,9 +3,9 @@ import 'package:logger/logger.dart';
 import '../logger.dart';
 
 class BaseService {
-  Logger log;
+  late Logger log;
 
-  BaseService({String title}) {
+  BaseService({String? title}) {
     this.log = getLogger(
       title ?? this.runtimeType.toString(),
     );

lib/core/entity/Category.dart

@@ -5,10 +5,10 @@ const String Category_columnName = 'name';
 const String Category_columnAppCompanyId = 'app_company_id';
 
 class Category {
-  int id;
+  int? id;
-  int parentIn;
+  int? parentIn;
-  String name;
+  String name = '';
-  int appCompanyId;
+  int? appCompanyId;
 
   Map<String, dynamic> toMap() {
     var map = <String, dynamic>{

lib/core/entity/Goods.dart

@@ -13,17 +13,17 @@ const String Goog_columnOkei = 'okei';
 const String Goog_columnDiscount = 'discount';
 
 class Good {
-  int id;
+  int? id;
-  int articul;
+  int articul = -1;
-  String name;
+  String name = '';
-  double price;
+  double price = -1;
-  int categoryId;
+  int categoryId = -1;
-  String ean;
+  String? ean;
-  int appCompanyId;
+  int? appCompanyId;
-  String description;
+  String? description;
-  double showPrice;
+  double? showPrice;
-  int okei;
+  int? okei;
-  double discount;
+  double? discount;
 
   Map<String, dynamic> toMap() {
     var map = <String, dynamic>{

lib/core/entity/Service.dart

@@ -14,16 +14,15 @@ const String Service_columnDiscount = 'discount';
 
 
 class Service {
-  int id;
+  int? id;
-  int articul;
+  int articul = -1;
-  String name;
+  String name = '';
-  double price;
+  double price = -1;
-  String ean;
+  int? appCompanyId;
-  int appCompanyId;
+  String? description;
-  String description;
+  double? showPrice;
-  double showPrice;
+  String? okei;
-  String okei;
+  double? discount;
-  double discount;
 
   Map<String, dynamic> toMap() {
     var map = <String, dynamic>{

lib/core/entity/Voucher.dart

@@ -16,16 +16,16 @@ const String VoucherTypeReturnPay = 'returnPay';
 const String VoucherTypeReport = 'report';
 
 class Voucher {
-  int id;
+  int? id;
-  String name;
+  String? name;
-  double total;
+  double? total;
-  String data;
+  String? data;
-  String base64Data;
+  String? base64Data;
-  DateTime dateTime;
+  DateTime? dateTime;
-  int appCompanyId;
+  int? appCompanyId;
-  int kassaId;
+  int? kassaId;
-  String type;
+  String? type;
-  String url;
+  String? url;
 
   Voucher();
 
@@ -35,7 +35,7 @@ class Voucher {
       Voucher_columnTotal: total,      
       Voucher_columnData: data,
       Voucher_columnBase64Data: base64Data,
-      Voucher_columnDateTime: dateTime.toIso8601String(),
+      Voucher_columnDateTime: dateTime?.toIso8601String(),
       Voucher_columnKassaId: kassaId,
       Voucher_columnAppCompanyId: appCompanyId,
       Voucher_columnType: type,
@@ -47,7 +47,7 @@ class Voucher {
     return map;
   }
 
-  Voucher.fromMap(Map<String, dynamic> map) {
+  Voucher.fromMap(Map<dynamic, dynamic> map) {
     id = map[Voucher_columnId];
     name = map[Voucher_columnName];
     total = map[Voucher_columnTotal]?.toDouble();

lib/core/logger.dart

@@ -14,13 +14,13 @@ class SimpleLogPrinter extends LogPrinter {
     var error = event.error?.toString() ?? '';
     var color = PrettyPrinter.levelColors[level];
     var emoji = PrettyPrinter.levelEmojis[level];
-    String stack;
+    String? stack;
     if (event.stackTrace == null) {
      stack = formatStackTrace(StackTrace.current, 2);
     } else {
-     stack = formatStackTrace(event.stackTrace, 1);
+     stack = formatStackTrace(event.stackTrace!, 1);
     }
-    print(color(' $emoji $message $error -> $stack '));
+    print(color!(' $emoji $message $error -> $stack '));
     return [];
   }
 
@@ -33,9 +33,9 @@ class SimpleLogPrinter extends LogPrinter {
    }
   }
 
-  String formatStackTrace(StackTrace stackTrace, int methodPosition) {
+  String? formatStackTrace(StackTrace stackTrace, int methodPosition) {
 
-    var lines = stackTrace.toString()?.split('\n');
+    var lines = stackTrace.toString().split('\n');
     var formatted = <String>[];
     var count = 0;
     for (var line in lines) {
@@ -62,7 +62,7 @@ class SimpleLogPrinter extends LogPrinter {
     if (match == null) {
       return false;
     }
-    return match.group(2).startsWith('package:logger');
+    return match.group(2)!.startsWith('package:logger');
   }
 
   bool _discardWebStacktraceLine(String line) {
@@ -70,8 +70,8 @@ class SimpleLogPrinter extends LogPrinter {
     if (match == null) {
       return false;
     }
-    return match.group(1).startsWith('packages/logger') ||
+    return match.group(1)!.startsWith('packages/logger') ||
-        match.group(1).startsWith('dart-sdk/lib');
+        match.group(1)!.startsWith('dart-sdk/lib');
   }
 }
 

lib/core/models/auth_response.dart

@@ -2,9 +2,9 @@ import '../utilsParse.dart';
 import 'user.dart';
 
 class AuthResponse {
-  final AuthBody body;
+  final AuthBody? body;
-  final int status;
+  final int? status;
-  final bool operation;  
+  final bool? operation;
 
 
   AuthResponse( {this.body, this.status, this.operation});
@@ -19,10 +19,10 @@ class AuthResponse {
 }
 
 class AuthBody {
-  final List<String> email;
+  final List<String>? email;
-  final List<String> password;
+  final List<String>? password;
-  final String message;
+  final String? message;
-  final User user;
+  final User? user;
   AuthBody({this.message, this.user, this.email, this.password});
   factory AuthBody.fromJson(Map<String, dynamic> json) {
     return AuthBody(

lib/core/models/calc_model.dart

@@ -1,9 +1,9 @@
 class CalcModel {
   String num1;
-  String num2;
+  String? num2;
   bool closed;
   String operation;
-  CalcModel({this.num1, this.num2, this.operation, this.closed = false});
+  CalcModel({required this.num1, this.num2, required this.operation, this.closed = false});
 
   @override
   String toString() {

lib/core/models/check_data.dart

@@ -1,9 +1,9 @@
 import 'package:aman_kassa_flutter/core/models/check_item.dart';
 
 class CheckData {
-  final String type;
+  final String ?type;
-  num card;
+  num? card;
-  final List<CheckItem> items;
+  final List<CheckItem>? items;
   CheckData({this.type, this.card, this.items});
 
   static CheckData fromJson(Map<String, dynamic> json) {
@@ -17,6 +17,6 @@ class CheckData {
       {
         'type': type,
         'card': card,
-        'items': items.map((e) => e.toJson()).toList()
+        'items': items?.map((e) => e.toJson()).toList()
       };
 }

lib/core/models/check_image_modal.dart

@@ -1,6 +1,6 @@
 class CheckImageModal {
-  final String base64Data;
+  final String? base64Data;
-  final String textData;
+  final String? textData;
   CheckImageModal({this.base64Data, this.textData});
 
   static CheckImageModal fromJson(Map<String, dynamic> json) {

lib/core/models/check_item.dart

@@ -3,8 +3,8 @@ class CheckItem {
   final num cnt;
   final num price;
   final int articul;
-  final String excise;
+  final String? excise;
-  CheckItem({this.name, this.cnt, this.price, this.articul, this.excise});
+  CheckItem({required this.name, required this.cnt, required this.price, required this.articul, this.excise});
 
   static CheckItem fromJson(Map<String, dynamic> json) {
     return CheckItem(

lib/core/models/choice.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class Choice {
-  const Choice({this.title, this.icon, this.command});
+  const Choice({required this.title, required this.icon, required this.command});
   final String command;
   final String title;
   final IconData icon;

lib/core/models/dialog_models.dart

@@ -4,13 +4,13 @@ class DialogRequest {
   final String title;
   final String description;
   final String buttonTitle;
-  final String cancelTitle;
+  final String? cancelTitle;
-  final String formatType;
+  final String? formatType;
 
   DialogRequest(
-      {@required this.title,
+      {required this.title,
-      @required this.description,
+      required this.description,
-      @required this.buttonTitle,
+      required this.buttonTitle,
       this.cancelTitle,
       this.formatType});
 }
@@ -18,13 +18,13 @@ class DialogRequest {
 class DialogResponse {
   //final String fieldOne;
   //final String fieldTwo;
-  final String responseText;
+  final String? responseText;
   final bool confirmed;
 
   DialogResponse({
     //this.fieldOne,
     //this.fieldTwo,
     this.responseText,
-    this.confirmed,
+    required this.confirmed,
   });
 }

lib/core/models/dict_dao.dart

@@ -1,5 +1,5 @@
 class DictDao {
   final int id;
   final String name;
-  DictDao({ this.id, this.name});
+  DictDao({ required this.id, required this.name});
 }

lib/core/models/message.dart

@@ -1,7 +1,7 @@
 class Message {
   final String message;
 
-  Message({this.message});
+  Message({required this.message});
 
 
   static Message fromJson(Map<String, dynamic> data) => Message(message : data['message']);

lib/core/models/money.dart

@@ -1,5 +1,5 @@
 class Money {
-  final num total;
+  final num? total;
   final bool loading;
-  Money({this.total, this.loading});
+  Money({this.total, required this.loading});
 }

lib/core/models/product_dao.dart

@@ -6,11 +6,11 @@ class ProductDao {
   final num price;
   num count;
   num total;
-  final Good good;
+  final Good? good;
-  final Service service;
+  final Service? service;
-  final String excise;
+  final String? excise;
 
 
-  ProductDao( {this.name, this.price, this.count, this.total, this.good, this.service, this.excise });
+  ProductDao( {required this.name, required this.price, required this.count, required this.total, this.good, this.service, this.excise });
 
 }

lib/core/models/response.dart

@@ -1,9 +1,9 @@
 class Response<T> {
-  final T body;
+  final T? body;
   final int status;
   final bool operation;
 
-  Response({this.body, this.operation, this.status});
+  Response({this.body, required this.operation, required this.status});
 
   factory Response.fromJson(Map<String, dynamic> data, Function parser) {
     return Response(

lib/core/models/setting_model.dart

@@ -1,6 +1,6 @@
 class SettingModel {
   const SettingModel({this.name, this.type, this.address});
-  final String type;
+  final String? type;
-  final String name;
+  final String? name;
-  final String address;
+  final String? address;
 }

lib/core/models/smena.dart

@@ -1,8 +1,8 @@
 class Smena {
-  final int id;
+  final int? id;
-  final DateTime startedAt;
+  final DateTime? startedAt;
-  final DateTime endedAt;
+  final DateTime? endedAt;
-  final String message;
+  final String? message;
 
   Smena({this.id, this.startedAt, this.endedAt, this.message});
 

lib/core/models/user.dart

@@ -1,15 +1,15 @@
 class User {
 
-  final String name;
+  final String? name;
-  final String email;
+  final String? email;
-  final String fullName;
+  final String? fullName;
-  final String token;
+  final String? token;
-  int appCompanyId;
+  int? appCompanyId;
-  int kassaId;
+  int? kassaId;
   
   User({this.email, this.fullName, this.name, this.token, this.appCompanyId, this.kassaId});
 
-  static User fromJson(Map<String, dynamic> json) {
+  static User? fromJson(Map<String, dynamic> json) {
     return json != null
     ? User (
       name: json['name'],

lib/core/router.dart

@@ -19,66 +19,66 @@ Route<dynamic> generateRoute(RouteSettings settings) {
     case LoginViewRoute:
       LoginModel model = settings.arguments as LoginModel;
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: LoginView(loginModel: model,),
       );
     case HomeViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: HomeView(),
       );
     case PaymentViewRoute:
       PaymentModel model = settings.arguments as PaymentModel;
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: PaymentView(model: model),
       );
     case HistoryViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: HistoryView(),
       );
     case InfoKkmViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: InfoKkmView(),
       );
     case SettingsViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: SettingView(),
       );
     case QrViewRoute:
       ImageShowModel data = settings.arguments as ImageShowModel;
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: QrView(data),
       );
     case ImageShowRoute:
       ImageShowModel data = settings.arguments as ImageShowModel;
       //return SlideRightRoute(widget: ImageShowContainer(data));
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: ImageShowContainer(data),
       );
     case SettingsPrinterRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: SettingPrinterView(),
       );
     case SettingsPrinterBTRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: PrinterSelectView(),
       );
     case SettingsPrinterEncodingRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: PrinterEncodingView(),
       );
     case SettingsPrinterPaperRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: PrinterPaperView(),
       );
     default:
@@ -90,7 +90,7 @@ Route<dynamic> generateRoute(RouteSettings settings) {
   }
 }
 
-PageRoute _getPageRoute({String routeName, Widget viewToShow}) {
+PageRoute _getPageRoute({required String routeName, required Widget viewToShow}) {
   return MaterialPageRoute(
       settings: RouteSettings(
         name: routeName,
@@ -100,7 +100,7 @@ PageRoute _getPageRoute({String routeName, Widget viewToShow}) {
 
 class SlideRightRoute extends PageRouteBuilder {
   final Widget widget;
-  SlideRightRoute({this.widget})
+  SlideRightRoute({required this.widget})
       : super(
           pageBuilder: (BuildContext context, Animation<double> animation,
               Animation<double> secondaryAnimation) {

lib/core/services/ApiService.dart

@@ -39,7 +39,7 @@ class ApiService extends BaseService {
     };
     String response = await requestFormData('/authenticate', requestBody, statusCheck: statusCheck );
     AuthResponse aman = AuthResponse.fromJson(json.decode(response));
-    return aman.body;
+    return aman.body!;
   }
 
   Future<AuthBody> authenticateToken(String token, { bool statusCheck = true}) async {
@@ -48,7 +48,7 @@ class ApiService extends BaseService {
     };
     String response = await requestFormData('/activate_token', requestBody, statusCheck: statusCheck );
     AuthResponse aman = AuthResponse.fromJson(json.decode(response));
-    return aman.body;
+    return aman.body!;
   }
 
   Future<Response<Message>> isActive(String token) async {
@@ -167,7 +167,7 @@ class ApiService extends BaseService {
 
         new Future.delayed(const Duration(milliseconds: 1000), (){
           _dialogService.showDialog(description: 'Необходимо пройти повторную авторизацию');
-        UserState state = Redux.store.state.userState;
+        UserState state = Redux.store!.state.userState!;
         _navigatorService.replace(LoginViewRoute, arguments: LoginModel(authType: state.authenticateType, login: state.login, password: state.password ));
         });
 

lib/core/services/DataService.dart

@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'dart:ffi';
 
 import 'package:aman_kassa_flutter/core/base/base_service.dart';
 import 'package:aman_kassa_flutter/core/entity/Category.dart';
@@ -25,7 +26,8 @@ class DataService extends BaseService {
   final ApiService _api = locator<ApiService>();
   final DbService _db = locator<DbService>();
 
-  Future<List<Category>> getCategoriesByParentId({int parentId}) async {
+  Future<List<Category>> getCategoriesByParentId(
+      {int? parentId}) async {
     List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(
         Category_tableName, '$Category_columnParentIn = ?', [parentId ?? 0]);
     return list.map((e) => Category.fromMap(e)).toList();
@@ -36,35 +38,38 @@ class DataService extends BaseService {
     return list.map((e) => Service.fromMap(e)).toList();
   }
 
-  Future<List<Good>> getGoodsByCategoryId({int categoryId}) async {
+  Future<List<Good>> getGoodsByCategoryId({int? categoryId}) async {
     List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(
         Goog_tableName, '$Goog_columnCategoryId  = ?', [categoryId ?? 0]);
     return list.map((e) => Good.fromMap(e)).toList();
   }
 
-  Future<List<Good>> getGoodsByBarcode ({ String barcode}) async {
+  Future<List<Good>> getGoodsByBarcode({required String barcode}) async {
-    List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(Goog_tableName, ' $Goog_columnEan = ?', [barcode]);
+    List<Map<String, dynamic>> list = await _db
+        .queryRowsWithWhere(Goog_tableName, ' $Goog_columnEan = ?', [barcode]);
     return list.map((e) => Good.fromMap(e)).toList();
   }
 
   CheckData _transformProductsToCheckData(
-      {String paymentType, String tradeType, List<ProductDao> items}) {
+      {String? paymentType,
+      String? tradeType,
+      required List<ProductDao> items}) {
     List<CheckItem> itemsList = [];
     int iterator = 1;
     num summ = 0.0;
     items.forEach((el) {
       int articul = iterator;
       if (el.service != null) {
-        articul = el.service.articul;
+        articul = el.service!.articul;
       } else if (el.good != null) {
-        articul = el.good.articul;
+        articul = el.good!.articul;
       }
       itemsList.add(CheckItem(
-          name: el.name ?? 'Позиция №$iterator',
+        name: el.name,
-          cnt: el.count,
+        cnt: el.count,
-          price: el.price,
+        price: el.price,
-          articul: articul,
+        articul: articul,
-          excise: el.excise,
+        excise: el.excise,
       ));
       summ += el.total;
       iterator++;
@@ -77,7 +82,9 @@ class DataService extends BaseService {
   }
 
   CheckData _transformCalcModelToCheckData(
-      {String paymentType, String tradeType, List<CalcModel> items}) {
+      {String? paymentType,
+      String? tradeType,
+      required List<CalcModel> items}) {
     List<CheckItem> itemsList = [];
     int iterator = 1;
     num summ = 0.0;
@@ -85,7 +92,7 @@ class DataService extends BaseService {
       int articul = iterator;
       CheckItem item = CheckItem(
           name: 'Позиция $iterator',
-          cnt: el.num2 != null ? double.parse(el.num2) : 1.0,
+          cnt: el.num2 != null ? double.parse(el.num2!) : 1.0,
           price: double.parse(el.num1),
           articul: articul);
 
@@ -111,13 +118,13 @@ class DataService extends BaseService {
          *  type
          */
   Future<void> insertVoucher(
-      {@required User user,
+      {required User user,
-      String data,
+      String? data,
-      String base64Data,
+      String? base64Data,
-      @required String name,
+      required String name,
       double total = 0.0,
       String type = VoucherTypePayment,
-      String url}) {
+      String? url}) async {
     assert(user != null);
     assert(name != null);
     Voucher voucher = Voucher()
@@ -133,21 +140,18 @@ class DataService extends BaseService {
     log.i(
         'save to db appCompanyId: ${user.appCompanyId}, kassaId: ${user.kassaId}');
     _db.insert(Voucher_tableName, voucher.toMap());
-    return null;
   }
 
-
+  Future<Response<dynamic>?> sellOrReturn(
-
+      {String? paymentType,
-  Future<Response<dynamic>> sellOrReturn(
+      String? tradeType,
-      {String paymentType,
+      required String token,
-      String tradeType,
+        required List<ProductDao> kassaItems,
-      String token,
+        required List<CalcModel> calcItems,
-      List<ProductDao> kassaItems,
+      required String operationType,
-      List<CalcModel> calcItems,
+      required String mode}) async {
-      String operationType,
-      String mode}) async {
     try {
-      String data;
+      String data = "";
       if (mode == SettingModeKassa) {
         CheckData checkData = _transformProductsToCheckData(
             paymentType: paymentType, tradeType: tradeType, items: kassaItems);
@@ -166,18 +170,20 @@ class DataService extends BaseService {
 //      log.i('response status: ${response.status}');
 //      log.i('response operation: ${response.operation}');
       if (response.status == 200 && response.operation == true) {
-        User user = Redux.store.state.userState.user;
+        User user = Redux.store!.state.userState!.user!;
         //check compare
 
-        String check = response?.body['check'];
+        String check = response.body['check'];
-        var checkText = response?.body['check_text'];
+        var checkText = response.body['check_text'];
-        CheckImageModal imageModal = new CheckImageModal( base64Data: check, textData: checkText !=null ? jsonEncode(checkText) : null );
+        CheckImageModal imageModal = new CheckImageModal(
+            base64Data: check,
+            textData: checkText != null ? jsonEncode(checkText) : null);
         // journal analyze
-        dynamic journal = response?.body['journal'];
+        dynamic journal = response.body['journal'];
         int checkNum = journal['check_num'];
         var summ = journal['summ'];
         // short url
-        String url = response?.body['link'];
+        String url = response.body['link'];
         // total
         double total = summ != null ? double.parse(summ.toString()) : 0.0;
 
@@ -201,9 +207,9 @@ class DataService extends BaseService {
   }
 
   Future<void> checkDbFill(User user) async {
-    int serviceCount = await _db.queryRowCount(Service_tableName);
+    int serviceCount = await _db.queryRowCount(Service_tableName) ?? 0;
     if (serviceCount == 0) {
-      int goodCount = await _db.queryRowCount(Goog_tableName);
+      int goodCount = await _db.queryRowCount(Goog_tableName) ?? 0;
       if (goodCount == 0) {
         await getDataFromServer(user);
       } else {
@@ -217,9 +223,10 @@ class DataService extends BaseService {
   Future<bool> getDataFromServer(User user) async {
     log.i('Get Data from server');
     try {
-      String token = user.token;
+      String token = user.token!;
       Response<dynamic> goods = await _api.getGoodsFromServer(token);
-      if(goods.operation==false && [401,402,403,412].contains(goods.status)){
+      if (goods.operation == false &&
+          [401, 402, 403, 412].contains(goods.status)) {
         log.i('session is closed');
         return false;
       }
@@ -230,7 +237,6 @@ class DataService extends BaseService {
       await _db.deleteAll(Service_tableName);
       log.i('All tables cleaned');
 
-
       if (goods.body.isNotEmpty) {
         for (var key in goods.body.keys) {
           Good row = Good.fromJson(goods.body[key]);

lib/core/services/DbService.dart

@@ -19,13 +19,13 @@ class DbService extends BaseService {
   static final DbService instance = DbService._privateConstructor();
 
   // only have a single app-wide reference to the database
-  static Database _database;
+  static Database? _database;
 
   Future<Database> get database async {
-    if (_database != null) return _database;
+    if (_database != null) return _database!;
     // lazily instantiate the db the first time it is accessed
     _database = await _initDatabase();
-    return _database;
+    return _database!;
   }
 
   // this opens the database (and creates it if it doesn't exist)
@@ -136,7 +136,7 @@ class DbService extends BaseService {
 
   // All of the methods (insert, query, update, delete) can also be done using
   // raw SQL commands. This method uses a raw query to give the row count.
-  Future<int> queryRowCount(String table) async {
+  Future<int?> queryRowCount(String table) async {
     Database db = await instance.database;
     return Sqflite.firstIntValue(
         await db.rawQuery('SELECT COUNT(*) FROM $table'));

lib/core/services/authentication_service.dart

@@ -10,18 +10,18 @@ import 'ApiService.dart';
 class AuthenticationService extends BaseService {
   final ApiService _api;
 
-  AuthenticationService({ApiService api}) : _api = api;
+  AuthenticationService({required ApiService api}) : _api = api;
 
-  User _currentUser;
+  User? _currentUser;
-  User get currentUser => _currentUser;
+  User? get currentUser => _currentUser;
 
-  Future<AuthBody> loginWithEmail({
+  Future<AuthBody?> loginWithEmail({
-    @required String email,
+    required String email,
-    @required String password,
+    required String password,
   }) async {
     try {
-      AuthBody result = await _api.authenticate(email, password);
+      AuthBody? result = await _api.authenticate(email, password);
-      if (result.user != null) {
+      if (result!=null && result.user != null) {
         _currentUser = result.user;
       }
       return result;
@@ -32,7 +32,7 @@ class AuthenticationService extends BaseService {
 
   Future<bool> isUserLoggedIn(String token) async {
     Response<Message> session = await _api.isActive(token);
-    if ("OK" == session.body.message) {
+    if ("OK" == session.body?.message) {
       //_session = session;
       return true;
     }
@@ -40,7 +40,7 @@ class AuthenticationService extends BaseService {
   }
 
   Future<bool> logout(String token) async {
-    Response<Message> session = await _api.logout(token);
+    Response<dynamic> session = await _api.logout(token);
     if ("logout" == session.body.message) {
       return true;
     }

lib/core/services/dialog_service.dart

@@ -5,11 +5,11 @@ import 'package:flutter/cupertino.dart';
 
 class DialogService {
   GlobalKey<NavigatorState> _dialogNavigationKey = GlobalKey<NavigatorState>();
-  Function(DialogRequest) _showDialogListener;
+  Function(DialogRequest)? _showDialogListener;
-  Function(DialogRequest) _showDialogInputListener;
+  Function(DialogRequest)? _showDialogInputListener;
-  Completer<DialogResponse> _dialogCompleter;
+  Completer<DialogResponse>? _dialogCompleter;
 
-  Completer<DialogResponse> get completer => this._dialogCompleter;
+  Completer<DialogResponse>? get completer => this._dialogCompleter;
 
   GlobalKey<NavigatorState> get dialogNavigationKey => _dialogNavigationKey;
 
@@ -23,53 +23,53 @@ class DialogService {
   /// Calls the dialog listener and returns a Future that will wait for dialogComplete.
   Future<DialogResponse> showDialog({
     String title = 'Aman Касса',
-    String description,
+    required String description,
     String buttonTitle = 'Ok',
   }) {
     _dialogCompleter = Completer<DialogResponse>();
-    _showDialogListener(DialogRequest(
+    _showDialogListener!(DialogRequest(
       title: title,
       description: description,
       buttonTitle: buttonTitle,
     ));
-    return _dialogCompleter.future;
+    return _dialogCompleter!.future;
   }
 
   /// Shows a confirmation dialog
   Future<DialogResponse> showConfirmationDialog(
-      {String title,
+      {required String title,
-      String description,
+        required String description,
       String confirmationTitle = 'Ok',
       String cancelTitle = 'Cancel'}) {
     _dialogCompleter = Completer<DialogResponse>();
-    _showDialogListener(DialogRequest(
+    _showDialogListener!(DialogRequest(
         title: title,
         description: description,
         buttonTitle: confirmationTitle,
         cancelTitle: cancelTitle));
-    return _dialogCompleter.future;
+    return _dialogCompleter!.future;
   }
 
   Future<DialogResponse> showConfirmationDialogInput(
       {String title = ' Aman Касса',
-      String description,
+        required String description,
       String confirmationTitle = 'Ok',
       String cancelTitle = 'Cancel',
-      String formatType}) {
+      String? formatType}) {
     _dialogCompleter = Completer<DialogResponse>();
-    _showDialogInputListener(DialogRequest(
+    _showDialogInputListener!(DialogRequest(
         title: title,
         description: description,
         buttonTitle: confirmationTitle,
         cancelTitle: cancelTitle,
         formatType: formatType));
-    return _dialogCompleter.future;
+    return _dialogCompleter!.future;
   }
 
   /// Completes the _dialogCompleter to resume the Future's execution call
   void dialogComplete(DialogResponse response) {
-    _dialogNavigationKey.currentState.pop();
+    _dialogNavigationKey.currentState!.pop();
-    _dialogCompleter.complete(response);
+    _dialogCompleter!.complete(response);
     _dialogCompleter = null;
   }
 }

lib/core/services/navigator_service.dart

@@ -6,27 +6,27 @@ class NavigatorService extends BaseService {
 
   Future<dynamic> push(String routeName, {dynamic arguments}) {
     log.i('routeName: $routeName');
-    return navigatorKey.currentState
+    return navigatorKey.currentState!
         .pushNamed(routeName, arguments: arguments);
   }
 
   Future<dynamic> replace(String routeName, {dynamic arguments}) {
     log.i('routeName: $routeName');
-    return navigatorKey.currentState
+    return navigatorKey.currentState!
         .pushNamedAndRemoveUntil(routeName, (Route<dynamic> route) => false, arguments: arguments);
   }
 
 
-  Future<T> navigateToPage<T>(MaterialPageRoute<T> pageRoute) async {
+  Future<T?> navigateToPage<T>(MaterialPageRoute<T> pageRoute) async {
     log.i('navigateToPage: pageRoute: ${pageRoute.settings.name}');
     if (navigatorKey.currentState == null) {
       log.e('navigateToPage: Navigator State is null');
       return null;
     }
-    return navigatorKey.currentState.push(pageRoute);
+    return navigatorKey.currentState!.push(pageRoute);
   }
 
-  Future<T> navigateToPageWithReplacement<T>(
+  Future<T?> navigateToPageWithReplacement<T>(
       MaterialPageRoute<T> pageRoute) async {
     log.i('navigateToPageWithReplacement: '
       'pageRoute: ${pageRoute.settings.name}');
@@ -34,15 +34,15 @@ class NavigatorService extends BaseService {
       log.e('navigateToPageWithReplacement: Navigator State is null');
       return null;
     }
-    return navigatorKey.currentState.pushReplacement(pageRoute);
+    return navigatorKey.currentState!.pushReplacement(pageRoute);
   }
 
-  void pop<T>([T result]) {
+  void pop<T>([T? result]) {
     log.i('goBack:');
     if (navigatorKey.currentState == null) {
       log.e('goBack: Navigator State is null');
       return;
     }
-    navigatorKey.currentState.pop(result);
+    navigatorKey.currentState!.pop(result);
   }
 }

lib/core/utilsParse.dart

@@ -1,4 +1,4 @@
-List<String> parseListString(json){
+List<String>? parseListString(json){
   if(json==null) return null;
   return new List<String>.from(json);
 }

lib/main.dart

@@ -7,7 +7,9 @@ import 'dart:io';
 
 import 'package:aman_kassa_flutter/shared/app_colors.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_screenutil/flutter_screenutil.dart';
 import 'package:google_fonts/google_fonts.dart';
+
 //service & tools
 import 'package:aman_kassa_flutter/redux/store.dart';
 import 'core/locator.dart';
@@ -15,10 +17,10 @@ import 'core/router.dart';
 import 'core/services/navigator_service.dart';
 import 'core/services/dialog_service.dart';
 import './widgets/dialog_manager.dart';
+
 //pages
 import 'views/start_up/start_up_view.dart';
 
-
 //main start
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -35,41 +37,46 @@ void main() async {
   runApp(MainApplication());
 }
 
-class MyHttpOverrides extends HttpOverrides{
+class MyHttpOverrides extends HttpOverrides {
   @override
-  HttpClient createHttpClient(SecurityContext context){
+  HttpClient createHttpClient(SecurityContext? context) {
     return super.createHttpClient(context)
-      ..badCertificateCallback = (X509Certificate cert, String host, int port)=> true;
+      ..badCertificateCallback =
+          (X509Certificate cert, String host, int port) => true;
   }
 }
 
-
 class MainApplication extends StatelessWidget {
-
   @override
   Widget build(BuildContext context) {
     return StoreProvider<AppState>(
-        store: Redux.store,
+        store: Redux.store!,
-        child: MaterialApp(
+        child: ScreenUtilInit(
-          theme: ThemeData(
+          designSize: const Size(
-            backgroundColor: backgroundColor,
+            411.43,
-            primaryColor: primaryColor,
+            683.43,
-            accentColor: yellowColor,
+          ),
-            scaffoldBackgroundColor: Colors.white,
+          builder: () => MaterialApp(
+            theme: ThemeData(
+              backgroundColor: backgroundColor,
+              primaryColor: primaryColor,
+              accentColor: yellowColor,
+              scaffoldBackgroundColor: Colors.white,
               // textTheme: GoogleFonts.latoTextTheme(
               //   Theme.of(context).textTheme,
               // )
+            ),
+            debugShowCheckedModeBanner: false,
+            builder: (context, child) => Navigator(
+              key: locator<DialogService>().dialogNavigationKey,
+              onGenerateRoute: (settings) => MaterialPageRoute(
+                  builder: (context) => DialogManager(child: child)),
+            ),
+            navigatorKey: locator<NavigatorService>().navigatorKey,
+            home: StartUpView(),
+            // first page
+            onGenerateRoute: generateRoute,
           ),
-          debugShowCheckedModeBanner: false,
+        ));
-          builder: (context, child) => Navigator(
-            key: locator<DialogService>().dialogNavigationKey,
-            onGenerateRoute: (settings) => MaterialPageRoute(
-                builder: (context) => DialogManager(child: child)),
-          ),
-          navigatorKey: locator<NavigatorService>().navigatorKey,
-          home: StartUpView(), // first page
-          onGenerateRoute: generateRoute,
-        ),
-      );
   }
 }

lib/redux/actions/calc_actions.dart

@@ -1,3 +1,4 @@
+import 'package:aman_kassa_flutter/core/models/calc_model.dart';
 import 'package:aman_kassa_flutter/redux/state/calc_state.dart';
 import 'package:aman_kassa_flutter/widgets/components/calculator/calculator.dart';
 import 'package:meta/meta.dart';
@@ -26,7 +27,7 @@ ThunkAction<AppState> onTapAction(String value) {
     if(value == Calculations.EQUAL){
       return setEqual(store);
     }
-    List calcItems = Calculator.action(value: value, items: store.state.calcState.calcItems);
+    List<CalcModel> calcItems = Calculator.action(value: value, items: store.state.calcState!.calcItems!);
     store.dispatch(SetCalcStateAction(CalcState(calcItems: calcItems, isEqual: false)));
   };
 }

lib/redux/actions/kassa_actions.dart

@@ -24,8 +24,8 @@ final DataService _dataService = locator<DataService>();
 final DialogService _dialogService = locator<DialogService>();
 
 Future<void> backBottomElement(Store<AppState> store) async {
-  List<DictDao> prevCategories = store.state.kassaState.prevCategories;
+  List<DictDao>? prevCategories = store.state.kassaState!.prevCategories;
-  DictDao last = prevCategories.removeLast();
+  DictDao? last = prevCategories?.removeLast() ;
   if (last != null) {
     store.dispatch(SetKassaStateAction(KassaState(prevCategories: prevCategories)));
     store.dispatch(selectBottomElement(last.id));
@@ -38,16 +38,16 @@ Future<void> cleanKassaItems(Store<AppState> store) async {
 
 ThunkAction<AppState> addCustomProductToKassaItems(String name, int count, double price, double total) {
   return (Store<AppState> store) async {
-    List<ProductDao> items = store.state.kassaState.kassaItems;
+    List<ProductDao> items = store.state.kassaState!.kassaItems!;
       items.add(new ProductDao(name: name, count: count, price: price, total: total));
       store.dispatch(SetKassaStateAction(KassaState(kassaItems: items)));
     };
 }
 
 
-ThunkAction<AppState> addProductToKassaItems(Good good, String excise) {
+ThunkAction<AppState> addProductToKassaItems(Good good, String? excise) {
   return (Store<AppState> store) async {
-    List<ProductDao> items = store.state.kassaState.kassaItems;
+    List<ProductDao> items = store.state.kassaState!.kassaItems!;
     int index = items.indexWhere((element) => element.excise == null && element.good?.id == good.id);
     if(excise !=null) {
       int existIndex = items.indexWhere((element) => element.excise != null && element.excise == excise);
@@ -68,7 +68,7 @@ ThunkAction<AppState> addProductToKassaItems(Good good, String excise) {
 
 ThunkAction<AppState> addServiceToKassaItems(Service service) {
   return (Store<AppState> store) async {
-    List<ProductDao> items = store.state.kassaState.kassaItems;
+    List<ProductDao> items = store.state.kassaState!.kassaItems!;
     int index = items.indexWhere((element) => element.good?.id == service.id);
     if (index > -1) {
       store.dispatch(counterProductFromKassaItems(index, 1));
@@ -82,7 +82,7 @@ ThunkAction<AppState> addServiceToKassaItems(Service service) {
 
 ThunkAction<AppState> removeProductFromKassaItems(int index) {
   return (Store<AppState> store) async {
-    List<ProductDao> items = List.from(store.state.kassaState.kassaItems);
+    List<ProductDao> items = List.from(store.state.kassaState!.kassaItems!);
     items.removeAt(index);
     store.dispatch(SetKassaStateAction(KassaState(kassaItems: items)));
   };
@@ -90,7 +90,7 @@ ThunkAction<AppState> removeProductFromKassaItems(int index) {
 
 ThunkAction<AppState> counterProductFromKassaItems(int index, int counter) {
   return (Store<AppState> store) async {
-    List<ProductDao> items = store.state.kassaState.kassaItems;
+    List<ProductDao> items = store.state.kassaState!.kassaItems!;
     ProductDao product = items.elementAt(index);
     if (product.count == 1 && counter < 0) {
       //if count to zero need delete element
@@ -107,24 +107,24 @@ ThunkAction<AppState> selectBottomElement(int parentId) {
   return (Store<AppState> store) async {
     store.dispatch(SetKassaStateAction(KassaState(bottomSheetLoading: true, bottomSheetElements: [])));
     try {
-      List<DictDao> prevCategories = store.state.kassaState.prevCategories;
+      List<DictDao> prevCategories = store.state.kassaState!.prevCategories!;
       if (parentId == 0) {
         prevCategories = [];
       }
-      store.state.kassaState.bottomSheetElements.forEach((element) {
+      store.state.kassaState!.bottomSheetElements!.forEach((element) {
         if (element is Category && element.id == parentId) {
-          prevCategories.add(DictDao(id: element.parentIn, name: element.name));
+          prevCategories.add(DictDao(id: element.parentIn!, name: element.name));
         }
       });
       List _bottomSheetElements = [];
 
 
-      if(store.state.settingState.tradeType == SettingTradeTypeGood) {
+      if(store.state.settingState!.tradeType == SettingTradeTypeGood) {
         List<Category> categories = await _dataService.getCategoriesByParentId(parentId: parentId);
         _bottomSheetElements.addAll(categories);
         List<Good> goods = await _dataService.getGoodsByCategoryId(categoryId: parentId);
         _bottomSheetElements.addAll(goods);
-      } else if(store.state.settingState.tradeType == SettingTradeTypeService) {
+      } else if(store.state.settingState!.tradeType == SettingTradeTypeService) {
         List<Service> services = await _dataService.getServices();
         _bottomSheetElements.addAll(services);
       }

lib/redux/actions/user_actions.dart

@@ -30,17 +30,17 @@ final DialogService _dialogService = locator<DialogService>();
 Future<void> checkUserAction(Store<AppState> store) async {
   store.dispatch(SetUserStateAction(UserState(isLoading: true)));
   try {
-    User user = store.state.userState.user;
+    User? user = store.state.userState?.user;
-    String token = user?.token;
+    String? token = user?.token;
     bool isAuthenticated = false;
-    if (token != null) {
+    if (token != null && user !=null) {
-      if(user.email!=null && user.email.toLowerCase().trim().startsWith('test')){
+      if(user.email!=null && user.email!.toLowerCase().trim().startsWith('test')){
         _api.test = true;
       } else {
         _api.test = false;
       }
       Response<Message> session = await _api.isActive(token);
-      isAuthenticated = "OK" == session.body.message;
+      isAuthenticated = "OK" == session.body?.message;
 
     } else {
       await Future.delayed(Duration(milliseconds: 2000));
@@ -82,11 +82,11 @@ Future<void> logoutAction(Store<AppState> store) async {
   }
 }
 
-Future<Response<dynamic>> checkMoney(Store<AppState> store) async {
+Future<Response<dynamic>?> checkMoney(Store<AppState> store) async {
   store.dispatch(SetUserStateAction(UserState(money: Money(loading: true))));
   try {
     Response<dynamic> result =
-        await _api.money(store.state.userState.user.token);
+        await _api.money(store.state.userState!.user!.token!);
     if (result.operation) {
       store.dispatch(SetUserStateAction(UserState(
           money: Money(
@@ -165,20 +165,20 @@ ThunkAction<AppState> authenticate(String email, String password) {
 }
 
 Future<void> checkSmena(Store<AppState> store) async {
-  String token = store.state.userState.user.token;
+  String token = store.state.userState!.user!.token!;
   Response<Smena> result = await _api.smena(token);
   store.dispatch(SetUserStateAction(UserState(smena: result.body)));
 }
 
 Future<void> closeSmena(Store<AppState> store) async {
-  String token = store.state.userState.user.token;
+  String token = store.state.userState!.user!.token!;
   Response<Smena> result = await _api.closeSmena(token);
   store.dispatch(SetUserStateAction(UserState(smena: result.body)));
   store.dispatch(checkMoney);
 }
 
 Future<void> openSmena(Store<AppState> store) async {
-  String token = store.state.userState.user.token;
+  String token = store.state.userState!.user!.token!;
   Response<Smena> result = await _api.openSmena(token);
   store.dispatch(SetUserStateAction(UserState(smena: result.body)));
   if (result.operation) {

lib/redux/state/calc_state.dart

@@ -3,8 +3,8 @@ import 'package:meta/meta.dart';
 
 @immutable
 class CalcState {
-  final List<CalcModel> calcItems;
+  final List<CalcModel>? calcItems;
-  final bool isEqual;
+  final bool? isEqual;
 
   CalcState({this.calcItems, this.isEqual});
 

lib/redux/state/kassa_state.dart

@@ -4,10 +4,10 @@ import 'package:meta/meta.dart';
 
 @immutable
 class KassaState {
-  final List bottomSheetElements;
+  final List? bottomSheetElements;
-  final bool bottomSheetLoading;
+  final bool? bottomSheetLoading;
-  final List<DictDao> prevCategories;
+  final List<DictDao>? prevCategories;
-  final List<ProductDao> kassaItems;
+  final List<ProductDao>? kassaItems;
 
 
   KassaState(

lib/redux/state/setting_state.dart

@@ -4,14 +4,14 @@ import 'package:flutter_bluetooth_basic/src/bluetooth_device.dart';
 
 @immutable
 class SettingState {
-  final String mode;
+  final String? mode;
-  final String tradeType;
+  final String? tradeType;
-  final String pinCode;
+  final String? pinCode;
-  final bool pinLocked;
+  final bool? pinLocked;
-  final bool pinSkip;
+  final bool? pinSkip;
-  final BluetoothDevice printerBT;
+  final BluetoothDevice? printerBT;
-  final String printerEncoding;
+  final String? printerEncoding;
-  final String printerPaperSize;
+  final String? printerPaperSize;
 
 
   SettingState({this.mode, this.tradeType, this.pinCode, this.pinLocked, this.pinSkip, this.printerBT,
@@ -19,7 +19,7 @@ class SettingState {
       this.printerPaperSize});
 
   //read hive
-  factory SettingState.initial(SettingState payload) {
+  factory SettingState.initial(SettingState? payload) {
     return SettingState(
         mode: payload?.mode ?? SettingModeKassa,
         tradeType: payload?.tradeType ?? SettingTradeTypeGood,
@@ -56,7 +56,7 @@ class SettingState {
     );
   }
 
-  static SettingState fromJson(dynamic json) {
+  static SettingState? fromJson(dynamic json) {
     return json != null
         ? SettingState(
             tradeType: json['tradeType'],
@@ -80,7 +80,7 @@ class SettingState {
       "pinCode": pinCode,
       "pinLocked" : pinLocked,
       "pinSkip" : pinSkip,
-	  "printerBT": printerBT != null ? printerBT.toJson() : null,
+	  "printerBT": printerBT != null ? printerBT!.toJson() : null,
       "printerEncoding": printerEncoding,
       "printerPaperSize": printerPaperSize,
     };

lib/redux/state/user_state.dart

@@ -5,16 +5,16 @@ import 'package:meta/meta.dart';
 
 @immutable
 class UserState {
-  final bool isError;
+  final bool? isError;
-  final bool isLoading;
+  final bool? isLoading;
-  final bool isAuthenticated;
+  final bool? isAuthenticated;
-  final String authenticateType;
+  final String? authenticateType;
-  final String login;
+  final String? login;
-  final String password;
+  final String? password;
-  final LoginFormMessage loginFormMessage;
+  final LoginFormMessage? loginFormMessage;
-  final User user;
+  final User? user;
-  final Smena smena;
+  final Smena? smena;
-  final Money money;
+  final Money? money;
 
 
   UserState(
@@ -30,7 +30,7 @@ class UserState {
       this.money,
       });
 
-  factory UserState.initial(UserState payload) => UserState(
+  factory UserState.initial(UserState? payload) => UserState(
         isLoading: false,
         isError: false,
         isAuthenticated: false,
@@ -44,16 +44,16 @@ class UserState {
       );
 
   UserState copyWith({
-    @required bool isError,
+    @required bool? isError,
-    @required bool isLoading,
+    @required bool? isLoading,
-    @required User user,
+    @required User? user,
-    @required bool isAuthenticated,
+    @required bool? isAuthenticated,
-    @required LoginFormMessage loginFormMessage,
+    @required LoginFormMessage? loginFormMessage,
-    @required Smena smena,
+    @required Smena? smena,
-    @required String authenticateType,
+    @required String? authenticateType,
-    @required String login,
+    @required String? login,
-    @required String password,
+    @required String? password,
-    @required Money money,
+    @required Money? money,
   }) {
     return UserState(
       isError: isError ?? this.isError,
@@ -69,7 +69,7 @@ class UserState {
     );
   }
 
-  static UserState fromJson(dynamic json) {
+  static UserState? fromJson(dynamic json) {
     return json != null
         ? UserState(
             user: User.fromJson(json['user']),
@@ -82,7 +82,7 @@ class UserState {
 
   dynamic toJson() {
     return {
-      "user": user != null ? user.toJson() : null,
+      "user": user != null ? user!.toJson() : null,
       "authenticateType": authenticateType,
       "login": login,
       "password": password,
@@ -91,9 +91,9 @@ class UserState {
 }
 
 class LoginFormMessage {
-  final String email;
+  final String? email;
-  final String password;
+  final String? password;
-  final String message;
+  final String? message;
 
   LoginFormMessage({this.email, this.password, this.message});
 }

lib/redux/store.dart

@@ -21,19 +21,19 @@ import 'actions/calc_actions.dart';
 AppState appReducer(AppState state, dynamic action) {
   if (action is SetUserStateAction) {
     /** UserAction **/
-    final nextUserState = userReducer(state.userState, action);
+    final nextUserState = userReducer(state.userState!, action);
     return state.copyWith(userState: nextUserState);
   } else if (action is SetKassaStateAction) {
     /** KassaAction **/
-    final nextMainState = mainReducer(state.kassaState, action);
+    final nextMainState = mainReducer(state.kassaState!, action);
     return state.copyWith(kassaState: nextMainState);
   } else if (action is SetSettingStateAction) {
     /** SettingAction **/
-    final nextSettingState = settingReducer(state.settingState, action);
+    final nextSettingState = settingReducer(state.settingState!, action);
     return state.copyWith(settingState: nextSettingState);
   } else if (action is SetCalcStateAction) {
     /** CalcAction **/
-    final nextCalcState = calcReducer(state.calcState, action);
+    final nextCalcState = calcReducer(state.calcState!, action);
     return state.copyWith(calcState: nextCalcState);
   }
   return state;
@@ -42,10 +42,10 @@ AppState appReducer(AppState state, dynamic action) {
 //Main  State
 @immutable
 class AppState {
-  final UserState userState;
+  final UserState? userState;
-  final KassaState kassaState;
+  final KassaState? kassaState;
-  final SettingState settingState;
+  final SettingState? settingState;
-  final CalcState calcState;
+  final CalcState? calcState;
 
   AppState({
     this.userState,
@@ -56,10 +56,10 @@ class AppState {
 
   //stable work
   AppState copyWith({
-    UserState userState,
+    UserState? userState,
-    KassaState kassaState,
+    KassaState? kassaState,
-    SettingState settingState,
+    SettingState? settingState,
-    CalcState calcState,
+    CalcState? calcState,
   }) {
     return AppState(
       userState: userState ?? this.userState,
@@ -69,7 +69,7 @@ class AppState {
     );
   }
 
-  static AppState fromJson(dynamic json){
+  static AppState? fromJson(dynamic json){
     return json !=null
         ? AppState(
           settingState: SettingState.fromJson(json['settingState']),
@@ -80,16 +80,16 @@ class AppState {
 
   dynamic toJson() {
     return {
-      "settingState": settingState.toJson(),
+      "settingState": settingState?.toJson(),
-      "userState" : userState.toJson(),
+      "userState" : userState?.toJson(),
     };
   }
 }
 
 class Redux {
-  static Store<AppState> _store;
+  static Store<AppState>? _store;
 
-  static Store<AppState> get store {
+  static Store<AppState>? get store {
     if (_store == null) {
       throw Exception("store is not initialized");
     } else {

lib/views/check/image_show_container.dart

@@ -19,7 +19,7 @@ import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
 import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
-import 'package:esys_flutter_share/esys_flutter_share.dart';
+import 'package:vocsy_esys_flutter_share/vocsy_esys_flutter_share.dart';
 import 'package:url_launcher/url_launcher.dart';
 
 class ImageShowContainer extends StatefulWidget {
@@ -34,14 +34,15 @@ class ImageShowContainer extends StatefulWidget {
 class _ImageShowContainerState extends State<ImageShowContainer> {
   final PrinterBluetoothManager printerManager = PrinterBluetoothManager();
   final DialogService _dialogService = locator<DialogService>();
-  final BluetoothDevice printerBtDevice = Redux.store.state.settingState.printerBT;
+  final BluetoothDevice? printerBtDevice =
+      Redux.store!.state.settingState!.printerBT;
   final BluetoothManager bluetoothManager = BluetoothManager.instance;
 
   bool _printing = false;
 
   void _preparePrint() async {
     if (Platform.isIOS) {
-      await _print();
+      _print();
     } else {
       bluetoothManager.state.listen((val) {
         print("state = $val");
@@ -49,11 +50,11 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
         if (val == 12) {
           print('on');
           _print();
-
         } else if (val == 10) {
           print('off');
           _dialogService.showDialog(
-              description: 'Отсутвует соеденение Bluetooth или он отключен' , title: 'Bluetooth');
+              description: 'Отсутвует соеденение Bluetooth или он отключен',
+              title: 'Bluetooth');
         }
         print('state is $val');
       });
@@ -61,9 +62,10 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
   }
 
   void _print() async {
-    final SettingState state = Redux.store.state.settingState;
+    final SettingState state = Redux.store!.state.settingState!;
-    if(state.printerBT == null) {
+    if (state.printerBT == null) {
-      _dialogService.showDialog(description: 'Укажите в настройках принтер для печати чеков');
+      _dialogService.showDialog(
+          description: 'Укажите в настройках принтер для печати чеков');
       return;
     }
 
@@ -71,7 +73,7 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
     int chunkSizeBytes = 3096;
     int queueSleepTimeMs = 100;
 
-    if(isIos){
+    if (isIos) {
       chunkSizeBytes = 75;
       queueSleepTimeMs = 10;
     }
@@ -80,13 +82,13 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
       _printing = true;
     });
     try {
-      printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
+      printerManager.selectPrinter(PrinterBluetooth(state.printerBT!));
       PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80
           ? PaperSize.mm80
           : PaperSize.mm58;
       if (SettingPrinterEncodingImage == state.printerEncoding) {
         final PosPrintResult res = await printerManager.printTicket(
-            await printImageCheck(paper, widget.showModel.data.base64Data),
+            await printImageCheck(paper, widget.showModel.data!.base64Data!),
             chunkSizeBytes: chunkSizeBytes,
             queueSleepTimeMs: queueSleepTimeMs);
         if (res.value != 1) {
@@ -94,9 +96,8 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
         }
       } else {
         final PosPrintResult res = await printerManager.printTicket(
-            await printTextCheck(
+            await printTextCheck(paper, state.printerEncoding!,
-                paper, state.printerEncoding,
+                jsonDecode(widget.showModel.data!.textData!)),
-                jsonDecode(widget.showModel.data.textData)),
             chunkSizeBytes: chunkSizeBytes,
             queueSleepTimeMs: queueSleepTimeMs);
         if (res.value != 1) {
@@ -119,7 +120,7 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
         //backgroundColor: fillColor,
         title: Text(widget.showModel.title),
         actions: [
-          if(_printing)
+          if (_printing)
             Padding(
               padding: const EdgeInsets.only(right: 8.0),
               child: SizedBox(
@@ -127,8 +128,7 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
                 child: Center(
                   child: CircularProgressIndicator(
                     strokeWidth: 2,
-                    valueColor: new AlwaysStoppedAnimation<Color>(
+                    valueColor: new AlwaysStoppedAnimation<Color>(whiteColor),
-                        whiteColor),
                   ),
                 ),
               ),
@@ -138,7 +138,9 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
         ],
       ),
       body: ListView(
-        children: <Widget>[imageFromBase64String(widget.showModel.data.base64Data)],
+        children: <Widget>[
+          imageFromBase64String(widget.showModel.data!.base64Data!)
+        ],
       ),
       floatingActionButton: MyFloatingActionButton(widget.showModel),
     );
@@ -153,16 +155,18 @@ Padding imageFromBase64String(String base64String) {
 }
 
 class ImageShowModel {
-  final CheckImageModal data;
+  final CheckImageModal? data;
   final String title;
-  final String url;
+  final String? url;
 
-  ImageShowModel({this.data, this.title, this.url});
+  ImageShowModel({this.data, required this.title, this.url});
 }
 
 class MyFloatingActionButton extends StatefulWidget {
   final ImageShowModel data;
+
   MyFloatingActionButton(this.data);
+
   @override
   _MyFloatingActionButtonState createState() => _MyFloatingActionButtonState();
 }
@@ -172,13 +176,10 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
   DialogService _dialog = locator<DialogService>();
   NavigatorService _navigatorService = locator<NavigatorService>();
 
-
   double sheetHeight = 260;
 
   @override
   Widget build(BuildContext context) {
-
-
     return showFab
         ? FloatingActionButton(
             child: Icon(Icons.share),
@@ -193,7 +194,7 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
                           boxShadow: [
                             BoxShadow(
                                 blurRadius: 10,
-                                color: Colors.grey[300],
+                                color: Colors.grey[300]!,
                                 spreadRadius: 5)
                           ]),
                       height: sheetHeight,
@@ -236,7 +237,7 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
   void shareFile() async {
     try {
       await Share.file('Aman Kassa', 'aman_kassa_check.png',
-          base64Decode(widget.data.data.base64Data), 'image/png');
+          base64Decode(widget.data.data!.base64Data!), 'image/png');
     } catch (e) {
       print('error: $e');
     }
@@ -255,15 +256,15 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
         confirmationTitle: 'Отправить',
         formatType: 'phone');
     if (response.confirmed) {
-      String phoneNumber = response.responseText;
+      String phoneNumber = response.responseText!;
       String msg = "Спасибо за покупку! \r\n ${widget.data.url} ";
       launchWhatsApp(phone: phoneNumber, message: msg);
     }
   }
 
   void launchWhatsApp({
-    @required String phone,
+    required String phone,
-    @required String message,
+    required String message,
   }) async {
     String url() {
       if (Platform.isIOS) {

lib/views/history/history_view.dart

@@ -65,7 +65,7 @@ class _HistoryViewState extends State<HistoryView> {
         },
         itemBuilder: (BuildContext context, int index) {
           Voucher voucher = data[index];
-          String base64Data = voucher.base64Data;
+          String? base64Data = voucher.base64Data;
           CheckImageModal checkImageData;
           if(base64Data !=null && base64Data.startsWith('{')){
             checkImageData = CheckImageModal.fromJson(jsonDecode(base64Data));
@@ -77,11 +77,11 @@ class _HistoryViewState extends State<HistoryView> {
               _navigatorService.push(ImageShowRoute,
                   arguments: ImageShowModel(
                       data: checkImageData,
-                      title: voucher.name,
+                      title: voucher.name!,
-                      url: voucher.url));
+                      url: voucher.url!));
             },
             title: buildText(voucher),
-            subtitle: Text(dateFormat.format(voucher.dateTime)),
+            subtitle: Text(dateFormat.format(voucher.dateTime!)),
             trailing: Icon(Icons.arrow_right),
             leading: voucher.type == VoucherTypePayment
                 ? Icon(
@@ -106,7 +106,7 @@ class _HistoryViewState extends State<HistoryView> {
   Text buildText(Voucher voucher) {
     if (voucher.type == VoucherTypePayment || voucher.type == VoucherTypeReturnPay) {
       return Text(
-          '${voucher.name} на сумму: ${voucher.total.toStringAsFixed(2)}');
+          '${voucher.name} на сумму: ${voucher.total?.toStringAsFixed(2)}');
     }
     return Text('${voucher.name}');
   }

lib/views/home/components/bottom_bar.dart

@@ -11,17 +11,18 @@ class BottomBar extends StatelessWidget {
   final int selectedTabIndex;
 
   BottomBar({
-    this.pageController,
+    required this.pageController,
-    this.selectedTabIndex,
+    required this.selectedTabIndex,
   });
 
   @override
   Widget build(BuildContext context) {
     return StoreConnector<AppState, SettingState>(
-        converter: (store) => store.state.settingState,
+        converter: (store) => store.state.settingState!,
         builder: (context, vm) {
           return BottomNavigationBar(
             currentIndex: selectedTabIndex,
+            showUnselectedLabels: true,
             backgroundColor: menuColor,
             type: BottomNavigationBarType.shifting,
             items: [

lib/views/home/components/header_title.dart

@@ -11,7 +11,7 @@ class HeaderTitle extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return StoreConnector<AppState, UserState>(
-        converter: (store) => store.state.userState,
+        converter: (store) => store.state.userState!,
         builder: (context, vm) {
           return Row(
             mainAxisAlignment: MainAxisAlignment.start,
@@ -30,7 +30,7 @@ class HeaderTitle extends StatelessWidget {
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: <Widget>[
                     Text(
-                      'Пользователь: ${vm.user.email}',
+                      'Пользователь: ${vm.user?.email}',
                       overflow: TextOverflow.fade,
                       maxLines: 1,
                       softWrap: false,
@@ -39,10 +39,10 @@ class HeaderTitle extends StatelessWidget {
                         color: Colors.black,
                       ),
                     ),
-                    vm.smena.message != null
+                    vm.smena?.message != null
-                        ? Text(vm.smena.message,
+                        ? Text(vm.smena!.message!,
                             style: TextStyle(fontSize: 13, color: redColor))
-                        : vm.smena.startedAt != null
+                        : vm.smena!.startedAt != null
                             ? Text(
                                 'Смена открыта',
                                 overflow: TextOverflow.fade,

lib/views/home/components/popup_menu.dart

@@ -15,7 +15,7 @@ const List<Choice> choices = const <Choice>[
 class PopupMenu extends StatelessWidget {
   final void Function(Choice value) onSelectChoice;
 
-  PopupMenu({this.onSelectChoice});
+  PopupMenu({required this.onSelectChoice});
 
   @override
   Widget build(BuildContext context) {

lib/views/home/home_view.dart

@@ -34,8 +34,8 @@ class HomeView extends StatefulWidget {
 
 class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
   Logger log = getLogger('HomeView');
-  PageController pageController;
+  late PageController pageController;
-  int selectedTabIndex;
+  late int selectedTabIndex;
   DataService _dataService = locator<DataService>();
   ApiService _api = locator<ApiService>();
   NavigatorService _navigatorService = locator<NavigatorService>();
@@ -55,8 +55,8 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
     final prevState = sp.getInt(lastKnownStateKey);
     final prevStateIsNotPaused = prevState != null &&
         AppLifecycleState.values[prevState] != AppLifecycleState.paused;
-    final bool pinIsExist = Redux.store.state.settingState?.pinCode?.isNotEmpty;
+    final bool pinIsExist = Redux.store!.state.settingState?.pinCode != null;
-    final bool pinSkipped = Redux.store.state.settingState.pinSkip;
+    final bool pinSkipped = Redux.store!.state.settingState?.pinSkip == true;
     print('prevStateIsNotPaused=$prevStateIsNotPaused, pinIsExist=$pinIsExist, pinSkipped=$pinSkipped');
     if(prevStateIsNotPaused && pinSkipped == false && pinIsExist == true) {
       // save App backgrounded time to Shared preferences
@@ -72,7 +72,7 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
     final allowedBackgroundTime = bgTime + pinLockMillis;
     final shouldShowPIN = DateTime.now().millisecondsSinceEpoch > allowedBackgroundTime;
     if(shouldShowPIN && bgTime > 0) {
-      await Redux.store.dispatch(changePinLockedFromSetting(true));
+      await Redux.store!.dispatch(changePinLockedFromSetting(true));
       pushToLockScreen();
     }
     sp.remove(backgroundedTimeKey); // clean
@@ -86,14 +86,14 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
                 onWillPop: () async {
                   return false;
                 },
-                child: PassCodeScreen( title: 'Áåçîïàñíîñòü',)
+                child: PassCodeScreen( title: 'Безопасность',)
             )
     ));
   }
 
   _checkLockPin () async {
-    final bool pinIsExist = Redux.store.state.settingState?.pinCode?.isNotEmpty;
+    final bool pinIsExist = Redux.store!.state.settingState?.pinCode != null;
-    final bool pinLocked = Redux.store.state.settingState?.pinLocked;
+    final bool pinLocked = Redux.store!.state.settingState?.pinLocked == true;
     final sp = await SharedPreferences.getInstance();
     sp.remove(backgroundedTimeKey);
     sp.setInt(lastKnownStateKey, AppLifecycleState.resumed.index);// previous state
@@ -106,11 +106,11 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
   @override
   void initState() {
     super.initState();
-    WidgetsBinding.instance.addObserver(this);
+    WidgetsBinding.instance!.addObserver(this);
     selectedTabIndex = 0;
     pageController = new PageController(initialPage: selectedTabIndex);
-    Redux.store.dispatch(checkSmena);
+    Redux.store!.dispatch(checkSmena);
-    _dataService.checkDbFill(Redux.store.state.userState.user);
+    _dataService.checkDbFill(Redux.store!.state.userState!.user!);
     _checkLockPin();
   }
 
@@ -135,7 +135,7 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
 
   @override
   void dispose() {
-    WidgetsBinding.instance.removeObserver(this);
+    WidgetsBinding.instance!.removeObserver(this);
     pageController.dispose();
     super.dispose();
   }
@@ -143,11 +143,11 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
   void _onSelectChoice(Choice choice) async {
     if (choice.command == 'exit') {
       Dialogs.showLoadingDialog(context, _keyLoader);
-      Response<dynamic> result = await _api.logout(Redux.store.state.userState.user.token);
+      Response<dynamic> result = await _api.logout(Redux.store!.state.userState!.user!.token!);
       if(result.operation && result.status == 200) {
-        Redux.store.dispatch(logoutAction);
+        Redux.store!.dispatch(logoutAction);
       }
-      Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+      Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
     } else if (choice.command == 'infokkm') {
       _navigatorService.push(InfoKkmViewRoute);
     } else if (choice.command == 'settings') {
@@ -172,7 +172,7 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
         backgroundColor: fillColor,
       ),
       body:StoreConnector<AppState, SettingState>(
-        converter: (store) => store.state.settingState,
+        converter: (store) => store.state.settingState!,
         builder: (context, vm) {
           return PageView(
             pageSnapping: true,

lib/views/home/tabs/AdditionalTab.dart

@@ -44,13 +44,13 @@ class _AdditionalTabState extends State<AdditionalTab> {
   DataService _dataService = locator<DataService>();
   final GlobalKey<State> _keyLoader = new GlobalKey<State>();
 
-  bool isMoneyCheckBusy;
+  late bool isMoneyCheckBusy;
-  bool closeSmenaBusy;
+  late bool closeSmenaBusy;
-  bool openSmenaBusy;
+  late bool openSmenaBusy;
-  bool depositBusy;
+  late bool depositBusy;
-  bool withdrawalBusy;
+  late bool withdrawalBusy;
-  bool xReportBusy;
+  late bool xReportBusy;
-  bool updateCatalog;
+  late bool updateCatalog;
 
   @override
   void initState() {
@@ -69,7 +69,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       closeSmenaBusy = true;
     });
     try {
-      await Redux.store.dispatch(closeSmena);
+      await Redux.store!.dispatch(closeSmena);
     } catch (e) {
       print(e);
     } finally {
@@ -84,7 +84,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       openSmenaBusy = true;
     });
     try {
-      await Redux.store.dispatch(openSmena);
+      await Redux.store!.dispatch(openSmena);
     } catch (e) {
       print(e);
     } finally {
@@ -99,15 +99,15 @@ class _AdditionalTabState extends State<AdditionalTab> {
       xReportBusy = true;
     });
     try {
-      User user = Redux.store.state.userState.user;
+      User user = Redux.store!.state.userState!.user!;
-      Response response = await _api.xReport(user.token);
+      Response response = await _api.xReport(user.token!);
       if (response.operation) {
         String check = response.body['check'];
         var checkText = response.body['check_text'];
         _navigator.push(ImageShowRoute,
             arguments:
                 ImageShowModel(data: CheckImageModal(base64Data: check, textData: checkText !=null ? jsonEncode(checkText) : null ), title: 'X Отчет'));
-        String url = response?.body['link'];
+        String url = response.body['link'];
         _dataService.insertVoucher(
             user: user,
             name: 'X Отчет',
@@ -132,8 +132,8 @@ class _AdditionalTabState extends State<AdditionalTab> {
     });
     try {
       Dialogs.showLoadingDialog(context, _keyLoader);
-      await _dataService.getDataFromServer(Redux.store.state.userState.user);
+      await _dataService.getDataFromServer(Redux.store!.state.userState!.user!);
-      Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+      Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
     } catch (e) {
       print(e);
     } finally {
@@ -155,10 +155,10 @@ class _AdditionalTabState extends State<AdditionalTab> {
       );
       if (response.confirmed) {
         Response<dynamic> result = await _api.deposit(
-            Redux.store.state.userState.user.token, response.responseText);
+            Redux.store!.state.userState!.user!.token!, response.responseText!);
         _dialog.showDialog(description: result.body['message']);
         if (result.operation) {
-          await Redux.store.dispatch(checkMoney);
+          await Redux.store!.dispatch(checkMoney);
         }
       }
     } catch (e) {
@@ -182,10 +182,10 @@ class _AdditionalTabState extends State<AdditionalTab> {
       );
       if (response.confirmed) {
         Response<dynamic> result = await _api.withdrawal(
-            Redux.store.state.userState.user.token, response.responseText);
+            Redux.store!.state.userState!.user!.token!, response.responseText!);
         _dialog.showDialog(description: result.body['message']);
         if (result.operation) {
-          await Redux.store.dispatch(checkMoney);
+          await Redux.store!.dispatch(checkMoney);
         }
       }
     } catch (e) {
@@ -202,7 +202,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       isMoneyCheckBusy = true;
     });
     try {
-      await Redux.store.dispatch(checkMoney);
+      await Redux.store!.dispatch(checkMoney);
       setState(() {
         isMoneyCheckBusy = false;
       });
@@ -226,7 +226,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
               right: 20.0,
             ),
             child: StoreConnector<AppState, SettingState>(
-                converter: (store) => store.state.settingState,
+                converter: (store) => store.state.settingState!,
                 builder: (context, vm) {
                   return Row(
                     mainAxisAlignment: MainAxisAlignment.spaceBetween,
@@ -272,7 +272,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
                   height: 50,
                   width: double.infinity,
                   child: StoreConnector<AppState, Money>(
-                      converter: (store) => store.state.userState.money,
+                      converter: (store) => store.state.userState!.money!,
                       builder: (_, vm) {
                         if (vm.loading == true) {
                           return Center(
@@ -395,6 +395,6 @@ class _AdditionalTabState extends State<AdditionalTab> {
   }
 
   void changeMode(el) {
-    Redux.store.dispatch(changeModeFromSetting(el));
+    Redux.store!.dispatch(changeModeFromSetting(el));
   }
 }

lib/views/home/tabs/CalculatorTab.dart

@@ -28,10 +28,10 @@ class CalculatorTab extends StatelessWidget {
         body: Column(
       children: <Widget>[
         StoreConnector<AppState, CalcState>(
-            converter: (store) => store.state.calcState,
+            converter: (store) => store.state.calcState!,
             builder: (context, vm) {
               return NumberDisplay(
-                  value: Calculator.parseItems(vm.calcItems, vm.isEqual));
+                  value: Calculator.parseItems(vm.calcItems!, vm.isEqual!));
             }),
         CalculatorButtons(onTap: _onPress),
         Row(
@@ -74,7 +74,7 @@ class CalculatorTab extends StatelessWidget {
     ));
   }
 
-  void _onPress({String buttonText}) {
+  void _onPress({required String buttonText}) {
-    Redux.store.dispatch(onTapAction(buttonText));
+    Redux.store!.dispatch(onTapAction(buttonText));
   }
 }

lib/views/home/tabs/KassaTab.dart

@@ -17,10 +17,10 @@ import 'package:aman_kassa_flutter/views/home/tabs/kassaView/CatalogBottomSheet.
 import 'package:aman_kassa_flutter/views/home/tabs/kassaView/ProductAddBottomSheet.dart';
 import 'package:aman_kassa_flutter/views/payment/payment_view.dart';
 import 'package:aman_kassa_flutter/widgets/components/ProductListItem.dart';
-import 'package:barcode_scan/gen/protos/protos.pb.dart';
+import 'package:barcode_scan2/gen/protos/protos.pb.dart';
-import 'package:barcode_scan/gen/protos/protos.pbenum.dart';
+import 'package:barcode_scan2/gen/protos/protos.pbenum.dart';
-import 'package:barcode_scan/model/scan_options.dart';
+import 'package:barcode_scan2/model/scan_options.dart';
-import 'package:barcode_scan/platform_wrapper.dart';
+import 'package:barcode_scan2/platform_wrapper.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_redux/flutter_redux.dart';
@@ -103,12 +103,12 @@ class KassaTab extends StatelessWidget {
             Expanded(
               child: Container(
                 child: StoreConnector<AppState, KassaState>(
-                    converter: (store) => store.state.kassaState,
+                    converter: (store) => store.state.kassaState!,
                     builder: (context, vm) {
                       return ListView.builder(
-                          itemCount: vm.kassaItems.length,
+                          itemCount: vm.kassaItems!.length,
                           itemBuilder: (BuildContext ctxt, int index) =>
-                              buildItem(ctxt, index, vm.kassaItems[index]));
+                              buildItem(ctxt, index, vm.kassaItems![index]));
                     }),
               ),
             ),
@@ -119,9 +119,9 @@ class KassaTab extends StatelessWidget {
                 mainAxisAlignment: MainAxisAlignment.end,
                 children: <Widget>[
                   StoreConnector<AppState, KassaState>(
-                      converter: (store) => store.state.kassaState,
+                      converter: (store) => store.state.kassaState!,
                       builder: (context, vm) {
-                        return Text(totalCalc(vm.kassaItems),
+                        return Text(totalCalc(vm.kassaItems!),
                             style: TextStyle(fontSize: 25));
                       }),
                 ],
@@ -184,7 +184,7 @@ class KassaTab extends StatelessWidget {
 
   Future<void> scan() async {
     try {
-      await Redux.store.dispatch(changePinSkipFromSetting(true));
+      await Redux.store!.dispatch(changePinSkipFromSetting(true));
       var options = ScanOptions(strings: {
         "cancel": 'Отмена',
         "flash_on": 'Вкл фонарик',
@@ -197,8 +197,8 @@ class KassaTab extends StatelessWidget {
       // print(result.formatNote); // If a unknown format was scanned this field contains a note
       // print(result.rawContent); // content
       if (result.type == ResultType.Barcode ) {
-        String barcode;
+        String? barcode;
-        String dataMatrix;
+        String? dataMatrix;
         if(result.format == BarcodeFormat.ean13 || result.format == BarcodeFormat.ean8) {
           barcode = result.rawContent;
         } else if( result.format == BarcodeFormat.dataMatrix ) {
@@ -219,7 +219,7 @@ class KassaTab extends StatelessWidget {
           List<Good> goods =
               await _dataService.getGoodsByBarcode(barcode: barcode);
           if (goods != null && goods.isNotEmpty) {
-            await Redux.store.dispatch(addProductToKassaItems(goods.first, dataMatrix));
+            await Redux.store!.dispatch(addProductToKassaItems(goods.first, dataMatrix));
           } else {
             _dialogService.showDialog(
                 description: 'Товар не найден: $barcode');
@@ -241,7 +241,7 @@ class KassaTab extends StatelessWidget {
         _dialogService.showDialog(description: 'Неизвестная ошибка: $e');
       }
     } finally {
-      await Redux.store.dispatch(changePinSkipFromSetting(false));
+      await Redux.store!.dispatch(changePinSkipFromSetting(false));
     }
   }
 

lib/views/home/tabs/kassaView/CatalogBottomSheet.dart

@@ -15,20 +15,20 @@ import 'package:flutter/material.dart';
 import 'package:flutter_redux/flutter_redux.dart';
 
 class CatalogBottomSheet extends StatelessWidget {
-  final ScrollController scrollController;
+  final ScrollController? scrollController;
 
   CatalogBottomSheet({this.scrollController});
 
   @override
   Widget build(BuildContext context) {
     return StoreConnector<AppState, KassaState>(
-      converter: (store) => store.state.kassaState,
+      converter: (store) => store.state.kassaState!,
-      onInit: (store) => Redux.store.dispatch(selectBottomElement(0)),
+      onInit: (store) => Redux.store!.dispatch(selectBottomElement(0)),
       builder: (context, vm) {
         return WillPopScope(
           onWillPop: () {
-            if (vm.prevCategories.length > 0) {
+            if (vm.prevCategories!.length > 0) {
-              Redux.store.dispatch(backBottomElement);
+              Redux.store!.dispatch(backBottomElement);
             } else
               Navigator.pop(context);
             return new Future(() => false);
@@ -36,8 +36,8 @@ class CatalogBottomSheet extends StatelessWidget {
           child: Scaffold(
               appBar: AppBar(
                 title: Text(
-                  vm.prevCategories.isNotEmpty
+                  vm.prevCategories!.isNotEmpty
-                      ? vm.prevCategories?.last?.name
+                      ? vm.prevCategories!.last.name
                       : '',
                   style: TextStyle(color: Colors.black45),
                 ),
@@ -45,12 +45,12 @@ class CatalogBottomSheet extends StatelessWidget {
                 backgroundColor: whiteColor,
                 elevation: 1,
                 leading: IconButton(
-                  icon: Icon(vm.prevCategories.length > 0
+                  icon: Icon(vm.prevCategories!.length > 0
                       ? Icons.arrow_back
                       : Icons.close),
                   onPressed: () {
-                    if (vm.prevCategories.length > 0) {
+                    if (vm.prevCategories!.length > 0) {
-                      Redux.store.dispatch(backBottomElement);
+                      Redux.store!.dispatch(backBottomElement);
                     } else
                       Navigator.pop(context);
                   },
@@ -63,11 +63,11 @@ class CatalogBottomSheet extends StatelessWidget {
                   Expanded(
                     child: ListView.builder(
                       controller: scrollController,
-                      itemCount: vm.bottomSheetElements.length,
+                      itemCount: vm.bottomSheetElements!.length,
                       itemBuilder: (context, index) {
-                        var el = vm.bottomSheetElements[index];
+                        var el = vm.bottomSheetElements![index];
-                        String name;
+                        String? name;
-                        String price;
+                        String? price;
                         if (el is Category) {
                           Category category = el;
                           name = category.name;
@@ -86,19 +86,19 @@ class CatalogBottomSheet extends StatelessWidget {
                                 ? Icon(Icons.layers, size: 25)
                                 : null,
                             title: Text(
-                              name,
+                              name ?? '',
                               style: TextStyle(fontSize: 15),
                             ),
                             onTap: () async {
                               if (el is Category) {
-                                Redux.store
+                                Redux.store!
-                                    .dispatch(selectBottomElement(el.id));
+                                    .dispatch(selectBottomElement(el.id!));
                               } else if (el is Good) {
-                                await Redux.store
+                                await Redux.store!
                                     .dispatch(addProductToKassaItems(el, null));
                                 Navigator.pop(context);
                               } else if (el is Service) {
-                                await Redux.store
+                                await Redux.store!
                                     .dispatch(addServiceToKassaItems(el));
                                 Navigator.pop(context);
                               }
@@ -106,7 +106,7 @@ class CatalogBottomSheet extends StatelessWidget {
                             trailing: el is Category
                                 ? Icon(Icons.chevron_right)
                                 : Text(
-                                    price,
+                                    price ?? '',
                                     style: TextStyle(
                                         fontSize: 15, color: Colors.black54),
                                   ),
@@ -135,12 +135,12 @@ class CatalogBottomSheet extends StatelessWidget {
     return Container(
       margin: const EdgeInsets.symmetric(horizontal: 15.0, vertical: 5.0),
       child: StoreConnector<AppState, KassaState>(
-          converter: (store) => store.state.kassaState,
+          converter: (store) => store.state.kassaState!,
           builder: (_, mainState) {
             return StoreConnector<AppState, SettingState>(
-                converter: (store) => store.state.settingState,
+                converter: (store) => store.state.settingState!,
                 builder: (_, settingState) {
-                  if (mainState.kassaItems.isNotEmpty) {
+                  if (mainState.kassaItems!.isNotEmpty) {
                     return GestureDetector(
                         onTap: () {
                           locator<DialogService>().showDialog(
@@ -169,8 +169,8 @@ class CatalogBottomSheet extends StatelessWidget {
                     underline: Container(
                       height: 1,
                     ),
-                    onChanged: (String newValue) {
+                    onChanged: (String? newValue) {
-                      onChangeTradeType(newValue, settingState.tradeType);
+                      onChangeTradeType(newValue!, settingState.tradeType!);
                     },
                     items: [
                       DropdownMenuItem<String>(
@@ -190,8 +190,8 @@ class CatalogBottomSheet extends StatelessWidget {
 
   void onChangeTradeType(String newValue, String oldValue) async {
     if (oldValue != newValue) {
-      await Redux.store.dispatch(changeTradeTypeFromSetting(newValue));
+      await Redux.store!.dispatch(changeTradeTypeFromSetting(newValue));
-      await Redux.store.dispatch(selectBottomElement(0));
+      await Redux.store!.dispatch(selectBottomElement(0));
     }
   }
 }

lib/views/home/tabs/kassaView/ProductAddBottomSheet.dart

@@ -6,7 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
 class ProductAddBottomSheet extends StatefulWidget {
-  final ScrollController scrollController;
+  final ScrollController? scrollController;
 
   ProductAddBottomSheet({this.scrollController});
 
@@ -15,9 +15,9 @@ class ProductAddBottomSheet extends StatefulWidget {
 }
 
 class _ProductAddBottomSheetState extends State<ProductAddBottomSheet> {
-  TextEditingController nameController;
+  late TextEditingController nameController;
-  TextEditingController countController;
+  late TextEditingController countController;
-  TextEditingController priceController;
+  late TextEditingController priceController;
   double sum = 0.0;
 
   @override
@@ -157,7 +157,7 @@ class _ProductAddBottomSheetState extends State<ProductAddBottomSheet> {
         priceController.text.isEmpty) {
       _showDialog();
     } else {
-      Redux.store.dispatch(addCustomProductToKassaItems(
+      Redux.store!.dispatch(addCustomProductToKassaItems(
           nameController.text,
           int.parse(countController.text),
           double.parse(priceController.text),

lib/views/info_kkm/info_kkm_view.dart

@@ -28,8 +28,8 @@ class _InfoKkmViewState extends State<InfoKkmView> {
     setState(() {
       loading = true;
     });
-    User user = Redux.store.state.userState.user;
+    User user = Redux.store!.state.userState!.user!;
-    Response<dynamic> response = await _apiService.infoKkm(user.token);
+    Response<dynamic> response = await _apiService.infoKkm(user.token!);
     if (response.operation) {
       List<dynamic> list = [];
       for (var key in response.body.keys) {

lib/views/lockscreen/passcodescreen.dart

@@ -8,7 +8,7 @@ import 'package:aman_kassa_flutter/core/locator.dart';
 import 'package:aman_kassa_flutter/core/services/navigator_service.dart';
 
 class PassCodeScreen extends StatefulWidget {
-  PassCodeScreen({Key key, this.title}) : super(key: key);
+  PassCodeScreen({Key? key, required this.title}) : super(key: key);
 
   final String title;
 
@@ -45,7 +45,7 @@ class _PassCodeScreenState extends State<PassCodeScreen> {
   @override
   Widget build(BuildContext context) {
     var myPass = [];
-    String _pinCode = Redux.store.state.settingState.pinCode;
+    String _pinCode = Redux.store!.state.settingState!.pinCode!;
     for (var i = 0; i < _pinCode.length; i++) {
       myPass.add(int.parse(_pinCode[i]));
     }
@@ -72,7 +72,7 @@ class _PassCodeScreenState extends State<PassCodeScreen> {
           return true;
         },
         onSuccess: () {
-          Redux.store.dispatch(changePinLockedFromSetting(false));
+          Redux.store!.dispatch(changePinLockedFromSetting(false));
           _navigatorService.replace(HomeViewRoute);
         });
   }

lib/views/login/login_view.dart

@@ -11,27 +11,27 @@ import 'package:aman_kassa_flutter/shared/app_colors.dart';
 import 'package:aman_kassa_flutter/shared/ui_helpers.dart';
 import 'package:aman_kassa_flutter/widgets/fields/busy_button.dart';
 import 'package:aman_kassa_flutter/widgets/fields/input_field.dart';
-import 'package:barcode_scan/gen/protos/protos.pb.dart';
+import 'package:barcode_scan2/gen/protos/protos.pb.dart';
-import 'package:barcode_scan/gen/protos/protos.pbenum.dart';
+import 'package:barcode_scan2/gen/protos/protos.pbenum.dart';
-import 'package:barcode_scan/model/scan_options.dart';
+import 'package:barcode_scan2/model/scan_options.dart';
-import 'package:barcode_scan/platform_wrapper.dart';
+import 'package:barcode_scan2/platform_wrapper.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_redux/flutter_redux.dart';
 import 'package:flutter/material.dart';
 import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
 
 class LoginView extends StatefulWidget {
-  final LoginModel loginModel;
+  final LoginModel? loginModel;
-  LoginView({this.loginModel});
+  LoginView({ this.loginModel});
 
   @override
   _LoginViewState createState() => _LoginViewState();
 }
 
 class _LoginViewState extends State<LoginView> {
-  TextEditingController emailController;
+  late TextEditingController emailController;
 
-  TextEditingController passwordController;
+  late TextEditingController passwordController;
 
   final FocusNode passwordNode = new FocusNode();
 
@@ -45,10 +45,10 @@ class _LoginViewState extends State<LoginView> {
   void initState() {
     super.initState();
     if (widget.loginModel != null &&
-        widget.loginModel.authType == AuthenticateTypeLogin) {
+        widget.loginModel?.authType == AuthenticateTypeLogin) {
-      emailController = TextEditingController(text: widget.loginModel.login);
+      emailController = TextEditingController(text: widget.loginModel?.login);
       passwordController =
-          TextEditingController(text: widget.loginModel.password);
+          TextEditingController(text: widget.loginModel?.password);
     } else {
       emailController = TextEditingController();
       passwordController = TextEditingController();
@@ -65,7 +65,7 @@ class _LoginViewState extends State<LoginView> {
   @override
   Widget build(BuildContext context) {
     return StoreConnector<AppState, UserState>(
-        converter: (store) => store.state.userState,
+        converter: (store) => store.state.userState!,
         builder: (context, vm) {
           return Scaffold(
               key: _scaffoldKey,
@@ -100,7 +100,7 @@ class _LoginViewState extends State<LoginView> {
                       controller: emailController,
                       textInputType: TextInputType.emailAddress,
                       nextFocusNode: passwordNode,
-                      additionalNote: vm.loginFormMessage.email,
+                      additionalNote: vm.loginFormMessage?.email,
                     ),
                     verticalSpaceSmall,
                     InputField(
@@ -108,7 +108,7 @@ class _LoginViewState extends State<LoginView> {
                       password: true,
                       controller: passwordController,
                       fieldFocusNode: passwordNode,
-                      additionalNote: vm.loginFormMessage.password,
+                      additionalNote: vm.loginFormMessage?.password,
                       enterPressed: _pressBtnEnter,
                       textInputAction: TextInputAction.done,
                     ),
@@ -121,7 +121,7 @@ class _LoginViewState extends State<LoginView> {
                           width: 150,
                           child: BusyButton(
                             title: 'Войти',
-                            busy: vm.isLoading,
+                            busy: vm.isLoading ?? false,
                             onPressed: _pressBtnEnter,
                           ),
                         )
@@ -151,7 +151,7 @@ class _LoginViewState extends State<LoginView> {
     } else {
       _apiService.test = false;
     }
-    Redux.store
+    Redux.store!
         .dispatch(authenticate(emailController.text, passwordController.text));
   }
 
@@ -169,13 +169,13 @@ class _LoginViewState extends State<LoginView> {
       // print(result
       //     .formatNote); // If a unknown format was scanned this field contains a note
       if (result.type == ResultType.Barcode &&
-          result.rawContent?.length == 60) {
+          result.rawContent.length == 60) {
         if (result.rawContent.toLowerCase().trim().startsWith('test')) {
           _apiService.test = true;
         } else {
           _apiService.test = false;
         }
-        Redux.store.dispatch(authenticateToken(result.rawContent));
+        Redux.store!.dispatch(authenticateToken(result.rawContent));
       } else if (result.type == ResultType.Error) {
         _dialogService.showDialog(description: 'Не верный формат QR кода');
       }
@@ -196,8 +196,8 @@ class _LoginViewState extends State<LoginView> {
 }
 
 class LoginModel {
-  final String authType;
+  final String? authType;
-  final String login;
+  final String? login;
-  final String password;
+  final String? password;
   LoginModel({this.authType, this.login, this.password});
 }

lib/views/payment/payment_view.dart

@@ -29,7 +29,7 @@ import 'package:flutter_redux/flutter_redux.dart';
 class PaymentView extends StatefulWidget {
   final PaymentModel model;
 
-  const PaymentView({Key key, this.model}) : super(key: key);
+  const PaymentView({Key? key, required this.model}) : super(key: key);
 
   @override
   _PaymentViewState createState() => _PaymentViewState();
@@ -40,7 +40,7 @@ class _PaymentViewState extends State<PaymentView> {
   final DataService _dataService = locator<DataService>();
   final DialogService _dialogService = locator<DialogService>();
   final NavigatorService _navigatorService = locator<NavigatorService>();
-  bool isBusy;
+  late bool isBusy;
 
   @override
   void initState() {
@@ -102,9 +102,9 @@ class _PaymentViewState extends State<PaymentView> {
   StoreConnector buildStoreConnector() {
     if (widget.model.mode == SettingModeCalc) {
       return StoreConnector<AppState, CalcState>(
-          converter: (store) => store.state.calcState,
+          converter: (store) => store.state.calcState!,
           builder: (_, vm) {
-            return Text('${totalCalc(vm.calcItems)} тнг',
+            return Text('${totalCalc(vm.calcItems!)} тнг',
                 style: TextStyle(
                     fontWeight: FontWeight.bold,
                     color: Colors.black87,
@@ -112,9 +112,9 @@ class _PaymentViewState extends State<PaymentView> {
           });
     }
     return StoreConnector<AppState, KassaState>(
-        converter: (store) => store.state.kassaState,
+        converter: (store) => store.state.kassaState!,
         builder: (_, vm) {
-          return Text('${totalKassa(vm.kassaItems)} тнг',
+          return Text('${totalKassa(vm.kassaItems!)} тнг',
               style: TextStyle(
                   fontWeight: FontWeight.bold,
                   color: Colors.black87,
@@ -174,16 +174,16 @@ class _PaymentViewState extends State<PaymentView> {
     });
     Dialogs.showLoadingDialog(context, _keyLoader);
     try {
-      AppState _state = Redux.store.state;
+      AppState _state = Redux.store!.state;
-      String _token = _state.userState.user.token;
+      String _token = _state.userState!.user!.token!;
-      String _tradeType = _state.settingState.tradeType;
+      String _tradeType = _state.settingState!.tradeType!;
-      String _mode = _state.settingState.mode;
+      String _mode = _state.settingState!.mode!;
       if (_mode == SettingModeCalc) {
         _tradeType = SettingTradeTypeGood;
       }
-      List<ProductDao> kassaItems = _state.kassaState.kassaItems;
+      List<ProductDao> kassaItems = _state.kassaState!.kassaItems!;
-      List<CalcModel> calcItems = _state.calcState.calcItems;
+      List<CalcModel> calcItems = _state.calcState!.calcItems!;
-      Response<dynamic> response = await _dataService.sellOrReturn(
+      Response<dynamic>? response = await _dataService.sellOrReturn(
           token: _token,
           kassaItems: kassaItems,
           paymentType: type,
@@ -199,34 +199,34 @@ class _PaymentViewState extends State<PaymentView> {
           String message = response.body['message'];
           String check = response.body['check'];
           var checkText = response.body['check_text'];
-          String url = response?.body['link'];
+          String url = response.body['link'];
           print('url : $url');
           if (_mode == SettingModeCalc) {
-            Redux.store.dispatch(cleanCalcItems);
+            Redux.store!.dispatch(cleanCalcItems);
           } else if (_mode == SettingModeKassa) {
-            Redux.store.dispatch(cleanKassaItems);
+            Redux.store!.dispatch(cleanKassaItems);
           }
-          Redux.store.dispatch(checkMoney);
+          Redux.store!.dispatch(checkMoney);
-          Redux.store.dispatch(openSmenaPseudo);
+          Redux.store!.dispatch(openSmenaPseudo);
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _navigatorService.pop();
           _navigatorService.push(ImageShowRoute,
               arguments: ImageShowModel(data:new CheckImageModal(base64Data: check, textData: checkText !=null ? jsonEncode(checkText) : null ), title: message, url: url ));
         } else if (!response.operation && ![401,402,403,412,500].contains(response.status)) {
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _dialogService.showDialog(description: response.body['message']);
         } else if(!response.operation && response.body['message'] != null) {
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _dialogService.showDialog(description: response.body['message']);
         }  else {
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
         }
       } else {
-         Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+         Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
       }
     } catch (e) {
       print(e);
-      Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+      Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
     } finally {
       
       //Navigator.of(context, rootNavigator: true).pop();
@@ -249,7 +249,7 @@ class _PaymentViewState extends State<PaymentView> {
     items.forEach((element) {
       if (element.operation == Calculations.MULTIPLY) {
         double num1 = element.num1 == null ? 0.0 : double.parse(element.num1);
-        double num2 = element.num2 == null ? 0.0 : double.parse(element.num2);
+        double num2 = element.num2 == null ? 0.0 : double.parse(element.num2!);
         total += num1 * num2;
       } else {
         total += element.num1 == null ? 0.0 : double.parse(element.num1);
@@ -262,5 +262,5 @@ class _PaymentViewState extends State<PaymentView> {
 class PaymentModel {
   String operationType;
   String mode;
-  PaymentModel({this.mode, this.operationType});
+  PaymentModel({required this.mode, required this.operationType});
 }

lib/views/qr_view/qr_view.dart

@@ -27,7 +27,7 @@ class _QrViewState extends State<QrView> {
       body: Container(
         child: Center(
           child: QrImage(
-            data: widget.data.url,
+            data: widget.data.url!,
             version: QrVersions.auto,
             size: 220.0,
           ),

lib/views/settings/component/setting_item.dart

@@ -2,12 +2,12 @@ import 'package:flutter/material.dart';
 
 class SettingItem extends StatefulWidget {
 
-  final String name;
+  final String? name;
-  final String value;
+  final String? value;
   final String title;
   final Function onTap;
 
-  SettingItem({Key key, this.name, this.value, this.onTap, this.title }) : super(key: key);
+  SettingItem({Key? key, this.name, this.value, required this.onTap, required this.title }) : super(key: key);
 
   @override
   _SettingItemState createState() => _SettingItemState();
@@ -21,16 +21,16 @@ class _SettingItemState extends State<SettingItem> {
         title: Text(widget.title),
         subtitle: Text.rich(
             TextSpan(
-                text: widget.name,
+                text: widget.name ?? '',
                 style: TextStyle(fontWeight: FontWeight.w500),
                 children: <TextSpan>[
-                  if(widget.value !=null)
+                  if(widget.value != null)
                     TextSpan(text: ' ${widget.value}', style: TextStyle(fontStyle: FontStyle.italic)),
                 ],
             )
         ),
         trailing: Icon(Icons.chevron_right),
-        onTap: widget.onTap,
+        onTap: () => widget.onTap(),
       ),
     );
   }

lib/views/settings/printer/PrinterTest.dart

@@ -10,65 +10,26 @@ import 'package:image/image.dart' as Im;
 import 'package:path_provider/path_provider.dart';
 import 'package:qr_flutter/qr_flutter.dart';
 
-Future<Ticket> testTicket(PaperSize paper) async {
+Future<List<int>> testTicket(PaperSize paper) async {
-  final Ticket ticket = Ticket(paper);
 
-  //Uint8List encTxt11 = await CharsetConverter.encode("cp866", "Russian: Привет Мир!");
+  final profile = await CapabilityProfile.load();
-  //ticket.textEncoded(encTxt11, styles: PosStyles(codeTable: PosCodeTable.pc866_2));
+  final ticket = Generator(PaperSize.mm80, profile);
-  //ticket.textEncoded(encTxt11);
+  List<int> bytes  = [];
-
+  bytes += ticket.text(
-  // ticket.text('Special 1: àÀ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //А
-  // ticket.text('Special 1: á'.toUpperCase(), styles: PosStyles(codeTable: PosCodeTable.westEur));// Б
-  // ticket.text('Special 1: â', styles: PosStyles(codeTable: PosCodeTable.westEur)); //В
-  // ticket.text('Special 1: ã', styles: PosStyles(codeTable: PosCodeTable.westEur));// Г
-  // ticket.text('Special 1: äÄ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Д
-  // ticket.text('Special 1: å', styles: PosStyles(codeTable: PosCodeTable.westEur));// Е
-  // ticket.text('Special 1: æÆ', styles: PosStyles(codeTable: PosCodeTable.westEur));// Ж
-  // ticket.text('Special 1: ç', styles: PosStyles(codeTable: PosCodeTable.westEur));//З
-  // ticket.text('Special 1: èÈ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // И
-  // ticket.text('Special 1: éÉ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Й
-  // ticket.text('Special 1: ê', styles: PosStyles(codeTable: PosCodeTable.westEur));//К
-  // ticket.text('Special 1: ëË', styles: PosStyles(codeTable: PosCodeTable.westEur));  // Л
-  // ticket.text('Special 1: ìÌ', styles: PosStyles(codeTable: PosCodeTable.westEur));// M
-  // ticket.text('Special 1: íÍ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Н
-  // ticket.text('Special 1: î', styles: PosStyles(codeTable: PosCodeTable.westEur));// О
-  // ticket.text('Special 1: ï', styles: PosStyles(codeTable: PosCodeTable.westEur)); // П
-  // ticket.text('Special 1: ð', styles: PosStyles(codeTable: PosCodeTable.westEur));// Р
-  // ticket.text('Special 1: ñ', styles: PosStyles(codeTable: PosCodeTable.westEur));// С
-  // ticket.text('Special 1: ò', styles: PosStyles(codeTable: PosCodeTable.westEur)); // Т
-  // ticket.text('Special 1: óÓ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //У
-  // ticket.text('Special 1: ô', styles: PosStyles(codeTable: PosCodeTable.westEur));// Ф
-  // ticket.text('Special 1: õÕ', styles: PosStyles(codeTable: PosCodeTable.westEur));// Х
-  // ticket.text('Special 1: ö', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ц
-  // ticket.text('Special 1: ÷', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ч
-  // ticket.text('Special 1: ø', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ш
-  // ticket.text('Special 1: ù', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Щ
-  // ticket.text('Special 1: ú', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ъ
-  // ticket.text('Special 1: û', styles: PosStyles(codeTable: PosCodeTable.westEur));//Ы
-  // ticket.text('Special 1: üÜ', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Ь
-  // ticket.text('Special 1: ý', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Э
-  // ticket.text('Special 1: þ', styles: PosStyles(codeTable: PosCodeTable.westEur)); // ю
-  // ticket.text('Special 1: ÿß', styles: PosStyles(codeTable: PosCodeTable.westEur)); //Я
-
-  // Uint8List encTxt11 = await CharsetConverter.encode("cp866", "Russian: Привет Мир!");
-  // //ticket.textEncoded(encTxt11, styles: PosStyles(codeTable: PosCodeTable.pc866_2));
-  // ticket.textEncoded(encTxt11);
-
-  ticket.text(
       'Regular: aA bB cC dD eE fF gG hH iI jJ kK lL mM nN oO pP qQ rR sS tT uU vV wW xX yY zZ');
   //ticket.text('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ', styles: PosStyles(codeTable: PosCodeTable.westEur));
   //ticket.text('Special 2: blåbærgrød', styles: PosStyles(codeTable: PosCodeTable.westEur));
 
-  ticket.text('Bold text', styles: PosStyles(bold: true));
+  bytes += ticket.text('Bold text', styles: PosStyles(bold: true));
-  ticket.text('Reverse text', styles: PosStyles(reverse: true));
+  bytes += ticket.text('Reverse text', styles: PosStyles(reverse: true));
-  ticket.text('Underlined text',
+  bytes += ticket.text('Underlined text',
       styles: PosStyles(underline: true), linesAfter: 1);
-  ticket.text('Align left', styles: PosStyles(align: PosAlign.left));
+  bytes += ticket.text('Align left', styles: PosStyles(align: PosAlign.left));
-  ticket.text('Align center', styles: PosStyles(align: PosAlign.center));
+  bytes += ticket.text('Align center', styles: PosStyles(align: PosAlign.center));
-  ticket.text('Align right',
+  bytes += ticket.text('Align right',
       styles: PosStyles(align: PosAlign.right), linesAfter: 1);
 
-  ticket.row([
+  bytes += ticket.row([
     PosColumn(
       text: 'col3',
       width: 3,
@@ -86,7 +47,7 @@ Future<Ticket> testTicket(PaperSize paper) async {
     ),
   ]);
 
-  ticket.text('Text size 200%',
+  bytes += ticket.text('Text size 200%',
       styles: PosStyles(
         height: PosTextSize.size2,
         width: PosTextSize.size2,
@@ -101,64 +62,70 @@ Future<Ticket> testTicket(PaperSize paper) async {
 
   // Print barcode
   final List<int> barData = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4];
-  ticket.barcode(Barcode.upcA(barData));
+  bytes += ticket.barcode(Barcode.upcA(barData));
 
 
 
-  ticket.feed(2);
+  bytes += ticket.feed(2);
 
-  ticket.cut();
+  bytes += ticket.cut();
-  return ticket;
+  return bytes;
 }
 
-Future<Ticket> testTicketImage(PaperSize paper) async {
+Future<List<int>> testTicketImage(PaperSize paper) async {
-  final Ticket ticket = Ticket(paper);
+  final profile = await CapabilityProfile.load();
+  final ticket = Generator(paper, profile);
+  List<int> bytesResult  = [];
 
   // Print image
   final ByteData byteData = await rootBundle.load('assets/images/check.png');
   final Uint8List bytes = byteData.buffer.asUint8List();
-  final Im.Image image = Im.decodeImage(bytes);
+  final Im.Image? image = Im.decodeImage(bytes);
   // Using `ESC *`
   //ticket.image(imagea);
   // Using `GS v 0` (obsolete)
   //ticket.imageRaster(imagea);
   // Using `GS ( L`
-  ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
+  if(image !=null) {
+    bytesResult += ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
+  }
   //ticket.image(imagea);
 
 
-  ticket.feed(2);
+  bytesResult += ticket.feed(2);
 
-  ticket.cut();
+  bytesResult += ticket.cut();
-  return ticket;
+  return bytesResult;
 }
 
-Future<Ticket> printImageCheck(PaperSize paper, String base64Src) async {
+Future<List<int>> printImageCheck(PaperSize paper, String base64Src) async {
-  final Ticket ticket = Ticket(paper);
+  final profile = await CapabilityProfile.load();
+  final ticket = Generator(paper, profile);
+  List<int> bytesResult  = [];
   final Uint8List bytes = base64Decode(base64Src);
-  final Im.Image image = Im.decodeImage(bytes);
+  final Im.Image? image = Im.decodeImage(bytes);
-  ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
+  if(image != null) {
-  //ticket.image(image);
+    bytesResult += ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
-  ticket.feed(2);
+  }
-  ticket.cut();
+  bytesResult += ticket.feed(2);
-  return ticket;
+  bytesResult += ticket.cut();
+  return bytesResult;
 }
 
 
-Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async {
+Future<List<int>> printTextCheck(PaperSize paper, String encoding, var data ) async {
-  final Ticket ticket = Ticket(paper);
+  final profile = await CapabilityProfile.load();
-  ticket.emptyLines(1);
+  final ticket = Generator(paper, profile);
-
+  List<int> bytesResult  = [];
-
+  String codeTable = 'CP866';
-  PosCodeTable codeTable;
   if(encoding == SettingPrinterEncodingCp866) {
-    codeTable = PosCodeTable.pc866_2;
+    codeTable = 'CP866';
   } else if(encoding == SettingPrinterEncodingWin1251) {
-    codeTable = PosCodeTable.wpc1251;
+    codeTable = 'CP1251';
   }
-
+  ticket.setGlobalCodeTable(codeTable);
-  //ticket.setGlobalCodeTable(codeTable);
+  bytesResult += ticket.emptyLines(1);
-  ticket.setGlobalFont(PosFontType.fontB);
+  //ticket.setGlobalFont(PosFontType.fontB);
 
 
   String qr = data['qr'];
@@ -172,7 +139,7 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
     if(text is List) {
       Uint8List firstCol = await CharsetConverter.encode(encoding, (text).first as String);
       Uint8List lastCol = await CharsetConverter.encode(encoding, (text).last as String);
-      ticket.row([
+      bytesResult += ticket.row([
         PosColumn(
           textEncoded: firstCol,
           width: 6,
@@ -187,16 +154,16 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
     } else {
       String line = text as String;
       if(line == 'breakline') {
-        ticket.hr();
+        bytesResult += ticket.hr();
       } else if(line == 'br') {
-        ticket.emptyLines(1);
+        bytesResult += ticket.emptyLines(1);
       } else if(line.trim() == '') {
-        ticket.emptyLines(1);
+        bytesResult += ticket.emptyLines(1);
       } else {
         line = line.replaceAll("«", '\"');
         line = line.replaceAll("»", '\"');
         Uint8List encTxt11 = await CharsetConverter.encode(encoding, line);
-        ticket.textEncoded( encTxt11, styles: PosStyles( align: center ? PosAlign.center : PosAlign.left, codeTable: codeTable  ));
+        bytesResult += ticket.textEncoded( encTxt11, styles: PosStyles( align: center ? PosAlign.center : PosAlign.left, codeTable: codeTable  ));
       }
     }
   }
@@ -205,7 +172,7 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
   //final List<int> barData = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 4];
   //ticket.barcode(Barcode.upcA(barData));
   //ticket.qrcode(qr, align: PosAlign.center);
-  ticket.emptyLines(1);
+  bytesResult += ticket.emptyLines(1);
   const double qrSize = 200;
   try {
     final uiImg = await QrPainter(
@@ -217,8 +184,12 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
     //final pathName = '${dir.path}/qr_tmp.png';
     //final qrFile = File(pathName);
     //final imgFile = await qrFile.writeAsBytes(uiImg.buffer.asUint8List());
-    final img = Im.decodePng(uiImg.buffer.asUint8List());
+    if(uiImg !=null) {
-    ticket.image(img);
+      final Im.Image? img = Im.decodePng(uiImg.buffer.asUint8List());
+      if(img !=null) {
+        bytesResult += ticket.image(img);
+      }
+    }
 
     //ticket.qrcode(qr, size: QRSize.Size1 );
   } catch (e) {
@@ -226,9 +197,9 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
   }
 
 
-  ticket.emptyLines(1);
+  bytesResult += ticket.emptyLines(1);
-  ticket.feed(1);
+  bytesResult += ticket.feed(1);
 
-  ticket.cut();
+  bytesResult += ticket.cut();
-  return ticket;
+  return bytesResult;
 }

lib/views/settings/printer/views/PrinterEncoding.dart

@@ -21,8 +21,8 @@ import '../data/settings_envi.dart';
 
 
 class PrinterEncodingView extends StatefulWidget {
-  PrinterEncodingView({Key key, this.title}) : super(key: key);
+  PrinterEncodingView({Key? key, this.title}) : super(key: key);
-  final String title;
+  final String? title;
 
   @override
   _PrinterEncodingViewState createState() => _PrinterEncodingViewState();
@@ -44,7 +44,7 @@ class _PrinterEncodingViewState extends State<PrinterEncodingView> {
 
   void _selectPrinter(String encoding, BuildContext context, ) async {
     _logger.i(encoding);
-    await Redux.store.dispatch(selectPrinterEncodingFromSetting(encoding));
+    await Redux.store!.dispatch(selectPrinterEncodingFromSetting(encoding));
     Navigator.of(context).pop(false);
   }
 
@@ -76,7 +76,7 @@ class _PrinterEncodingViewState extends State<PrinterEncodingView> {
                             crossAxisAlignment: CrossAxisAlignment.start,
                             mainAxisAlignment: MainAxisAlignment.center,
                             children: <Widget>[
-                              Text(encoding.values.elementAt(index) ?? ''),
+                              Text(encoding.values.elementAt(index)),
                             ],
                           ),
                         )

lib/views/settings/printer/views/PrinterPaperSize.dart

@@ -21,8 +21,8 @@ import '../data/settings_envi.dart';
 
 
 class PrinterPaperView extends StatefulWidget {
-  PrinterPaperView({Key key, this.title}) : super(key: key);
+  PrinterPaperView({Key? key, this.title}) : super(key: key);
-  final String title;
+  final String? title;
 
   @override
   _PrinterEncodingViewState createState() => _PrinterEncodingViewState();
@@ -44,7 +44,7 @@ class _PrinterEncodingViewState extends State<PrinterPaperView> {
 
   void _selectPaper(String paperSize, BuildContext context, ) async {
     _logger.i(encoding);
-    await Redux.store.dispatch(selectPrinterPaperSizeFromSetting(paperSize));
+    await Redux.store!.dispatch(selectPrinterPaperSizeFromSetting(paperSize));
     Navigator.of(context).pop(false);
   }
 
@@ -76,7 +76,7 @@ class _PrinterEncodingViewState extends State<PrinterPaperView> {
                             crossAxisAlignment: CrossAxisAlignment.start,
                             mainAxisAlignment: MainAxisAlignment.center,
                             children: <Widget>[
-                              Text(paperSize.values.elementAt(index) ?? ''),
+                              Text(paperSize.values.elementAt(index)),
                             ],
                           ),
                         )

lib/views/settings/printer/views/PrinterSelect.dart

@@ -21,8 +21,8 @@ import '../PrinterTest.dart';
 
 
 class PrinterSelectView extends StatefulWidget {
-  PrinterSelectView({Key key, this.title}) : super(key: key);
+  PrinterSelectView({Key? key, this.title}) : super(key: key);
-  final String title;
+  final String? title;
 
   @override
   _PrinterSelectViewState createState() => _PrinterSelectViewState();
@@ -58,163 +58,6 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
     printerManager.stopScan();
   }
 
-  Future<Ticket> demoReceipt(PaperSize paper) async {
-    final Ticket ticket = Ticket(paper, );
-
-    // Print image
-    // final ByteData data = await rootBundle.load('assets/images/aman_kassa_check.png');
-    // final Uint8List bytes = data.buffer.asUint8List();
-    // final Im.Image image = Im.decodeImage(bytes);
-    // Im.Image thumbnail = Im.copyResize(image, width: 270);
-    // ticket.image(thumbnail, align: PosAlign.center);
-
-    //ticket.imageRaster(image, align: PosAlign.center);
-
-    ticket.text('AMAN-SATU',
-        styles: PosStyles(
-          align: PosAlign.center,
-          height: PosTextSize.size2,
-          width: PosTextSize.size2,
-        ),
-        linesAfter: 1);
-
-    ticket.text('889  Watson Lane', styles: PosStyles(align: PosAlign.center));
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, codeTable: PosCodeTable.westEur), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, fontType: PosFontType.fontA), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, fontType: PosFontType.fontB), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, height: PosTextSize.size1), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, width: PosTextSize.size2), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, width: PosTextSize.size3), containsChinese: true);
-    ticket.text('Русский язык', styles: PosStyles(align: PosAlign.center, width: PosTextSize.size4), containsChinese: true);
-    ticket.text('Tel: 830-221-1234', styles: PosStyles(align: PosAlign.center));
-    ticket.text('Web: www.example.com',
-        styles: PosStyles(align: PosAlign.center), linesAfter: 1);
-
-    ticket.hr();
-    ticket.row([
-      PosColumn(text: 'Qty', width: 1),
-      PosColumn(text: 'Item', width: 7),
-      PosColumn(
-          text: 'Price', width: 2, styles: PosStyles(align: PosAlign.right)),
-      PosColumn(
-          text: 'Total', width: 2, styles: PosStyles(align: PosAlign.right)),
-    ]);
-
-    ticket.row([
-      PosColumn(text: '2', width: 1),
-      PosColumn(text: 'ONION RINGS', width: 7),
-      PosColumn(
-          text: '0.99', width: 2, styles: PosStyles(align: PosAlign.right)),
-      PosColumn(
-          text: '1.98', width: 2, styles: PosStyles(align: PosAlign.right)),
-    ]);
-    ticket.row([
-      PosColumn(text: '1', width: 1),
-      PosColumn(text: 'PIZZA', width: 7),
-      PosColumn(
-          text: '3.45', width: 2, styles: PosStyles(align: PosAlign.right)),
-      PosColumn(
-          text: '3.45', width: 2, styles: PosStyles(align: PosAlign.right)),
-    ]);
-    ticket.row([
-      PosColumn(text: '1', width: 1),
-      PosColumn(text: 'SPRING ROLLS', width: 7),
-      PosColumn(
-          text: '2.99', width: 2, styles: PosStyles(align: PosAlign.right)),
-      PosColumn(
-          text: '2.99', width: 2, styles: PosStyles(align: PosAlign.right)),
-    ]);
-    ticket.row([
-      PosColumn(text: '3', width: 1),
-      PosColumn(text: 'CRUNCHY STICKS', width: 7),
-      PosColumn(
-          text: '0.85', width: 2, styles: PosStyles(align: PosAlign.right)),
-      PosColumn(
-          text: '2.55', width: 2, styles: PosStyles(align: PosAlign.right)),
-    ]);
-    ticket.hr();
-
-    ticket.row([
-      PosColumn(
-          text: 'TOTAL',
-          width: 6,
-          styles: PosStyles(
-            height: PosTextSize.size2,
-            width: PosTextSize.size2,
-          )),
-      PosColumn(
-          text: '\$10.97',
-          width: 6,
-          styles: PosStyles(
-            align: PosAlign.right,
-            height: PosTextSize.size2,
-            width: PosTextSize.size2,
-          )),
-    ]);
-
-    ticket.hr(ch: '=', linesAfter: 1);
-
-    ticket.row([
-      PosColumn(
-          text: 'Cash',
-          width: 7,
-          styles: PosStyles(align: PosAlign.right, width: PosTextSize.size2)),
-      PosColumn(
-          text: '\$15.00',
-          width: 5,
-          styles: PosStyles(align: PosAlign.right, width: PosTextSize.size2)),
-    ]);
-    ticket.row([
-      PosColumn(
-          text: 'Change',
-          width: 7,
-          styles: PosStyles(align: PosAlign.right, width: PosTextSize.size2)),
-      PosColumn(
-          text: '\$4.03',
-          width: 5,
-          styles: PosStyles(align: PosAlign.right, width: PosTextSize.size2)),
-    ]);
-
-    ticket.feed(2);
-    ticket.text('Thank you!',
-        styles: PosStyles(align: PosAlign.center, bold: true));
-
-    final now = DateTime.now();
-    final formatter = DateFormat('MM/dd/yyyy H:m');
-    final String timestamp = formatter.format(now);
-    ticket.text(timestamp,
-        styles: PosStyles(align: PosAlign.center), linesAfter: 2);
-
-    // Print QR Code from image
-    // try {
-    //   const String qrData = 'example.com';
-    //   const double qrSize = 200;
-    //   final uiImg = await QrPainter(
-    //     data: qrData,
-    //     version: QrVersions.auto,
-    //     gapless: false,
-    //   ).toImageData(qrSize);
-    //   final dir = await getTemporaryDirectory();
-    //   final pathName = '${dir.path}/qr_tmp.png';
-    //   final qrFile = File(pathName);
-    //   final imgFile = await qrFile.writeAsBytes(uiImg.buffer.asUint8List());
-    //   final img = decodeImage(imgFile.readAsBytesSync());
-
-    //   ticket.image(img);
-    // } catch (e) {
-    //   print(e);
-    // }
-
-    // Print QR Code using native function
-    // ticket.qrcode('example.com');
-
-    ticket.feed(2);
-    ticket.cut();
-    return ticket;
-  }
-
-
-
   void _selectPrinter(PrinterBluetooth printer, BuildContext context, ) async {
     printerManager.selectPrinter(printer);
     _logger.i(printer.name);
@@ -225,7 +68,7 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
       ..name=printer.name
       ..type=printer.type;
 
-    await Redux.store.dispatch(selectPrinterFromSetting(device));
+    await Redux.store!.dispatch(selectPrinterFromSetting(device));
     Navigator.of(context).pop(false);
   }
 
@@ -246,9 +89,6 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
          queueSleepTimeMs: 50
      );
 
-    // DEMO RECEIPT
-    // final PosPrintResult res =
-    // await printerManager.printTicket(await demoReceipt(paper) , queueSleepTimeMs: 50);
 
   }
 
@@ -283,7 +123,7 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
                               mainAxisAlignment: MainAxisAlignment.center,
                               children: <Widget>[
                                 Text(_devices[index].name ?? ''),
-                                Text(_devices[index].address),
+                                Text(_devices[index].address ?? ''),
                                 Text(
                                   'Click to print a test receipt',
                                   style: TextStyle(color: Colors.grey[700]),
@@ -303,7 +143,7 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
           stream: printerManager.isScanningStream,
           initialData: false,
           builder: (c, snapshot) {
-            if (snapshot.data) {
+            if (snapshot.data != null) {
               return FloatingActionButton(
                 child: Icon(Icons.stop),
                 onPressed: _stopScanDevices,

lib/views/settings/setting_printer_view.dart

@@ -53,8 +53,8 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
       _printing = true;
     });
     try {
-      final SettingState state = Redux.store.state.settingState;
+      final SettingState state = Redux.store!.state.settingState!;
-      printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
+      printerManager.selectPrinter(PrinterBluetooth(state.printerBT!));
       bool isIos = Platform.isIOS;
       int chunkSizeBytes = 3096;
       int queueSleepTimeMs = 100;
@@ -78,7 +78,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
         _dialogService.showDialog(description: res.msg);
       } else {
         final PosPrintResult res = await printerManager.printTicket(
-            await printTextCheck(paper, state.printerEncoding, exampleJson['check_text']),
+            await printTextCheck(paper, state.printerEncoding!, exampleJson['check_text']),
             chunkSizeBytes: chunkSizeBytes,
             queueSleepTimeMs: queueSleepTimeMs
         );
@@ -107,22 +107,22 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
       body: Padding(
         padding: const EdgeInsets.symmetric(horizontal: 8.0),
         child: StoreConnector<AppState, SettingState>(
-            converter: (store) => store.state.settingState,
+            converter: (store) => store.state.settingState!,
             builder: (context, vm) {
               return Column(
                 children: [
                   SettingItem(
                       title: 'Принтер',
-                      name: vm.printerBT?.name,
+                      name: vm.printerBT?.name ?? '',
                       value: vm.printerBT != null
-                          ? 'BT: ${vm.printerBT.address} '
+                          ? 'BT: ${vm.printerBT?.address ?? ''} '
                           : 'не выбран',
                       onTap: () {
                         _navigatorService.push(SettingsPrinterBTRoute);
                       }),
                   SettingItem(
                       title: 'Кодировка',
-                      name: vm.printerEncoding != null ? encoding[vm.printerEncoding] : null ,
+                      name: vm.printerEncoding != null ? encoding[vm.printerEncoding] : '' ,
                       onTap: () {
                         _navigatorService.push(SettingsPrinterEncodingRoute);
                       }),
@@ -144,9 +144,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
                             busy: _printing,
                             enabled: vm.printerBT != null,
                             onPressed: () {
-
                               _startInitialPrint();
-
                             },
                           ),
                         ],
@@ -166,7 +164,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
     if( Platform.isAndroid) {
       var status = await Permission.location.status;
       log.i(status);
-      if (status.isUndetermined || status.isDenied || status.isPermanentlyDenied) {
+      if ( status.isDenied || status.isPermanentlyDenied) {
         DialogResponse response = await _dialogService.showConfirmationDialog(
           title: 'Доступ',
           description: 'Для поиска устройств Bluetooth необходимо предоставить доступ к отслеживанию геолокации.',
@@ -194,7 +192,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
 
 
     if (Platform.isIOS) {
-      await _testPrint();
+      _testPrint();
     } else {
       bluetoothManager.state.listen((val) {
         print("state = $val");

lib/views/settings/settings_view.dart

@@ -16,13 +16,13 @@ class SettingView extends StatefulWidget {
 }
 
 class _SettingViewState extends State<SettingView> {
-  TextEditingController _pinController;
+  late TextEditingController _pinController;
   final DialogService _dialogService = locator<DialogService>();
 
   @override
   void initState() {
     super.initState();
-    SettingState state = Redux.store.state.settingState;
+    SettingState state = Redux.store!.state.settingState!;
     _pinController = new TextEditingController(text: state.pinCode);
   }
 
@@ -41,7 +41,7 @@ class _SettingViewState extends State<SettingView> {
     if(value.isNotEmpty && value.length !=4){
       _dialogService.showDialog(description: 'Необходимо указать 4-х значный числовой код');
     } else {
-      await Redux.store.dispatch(changePinCodeFromSetting(_pinController.text));
+      await Redux.store!.dispatch(changePinCodeFromSetting(_pinController.text));
       _dialogService.showDialog(description: 'Данные успешно сохранены');
     }
   }

lib/views/start_up/start_up_view.dart

@@ -3,7 +3,6 @@ import 'package:aman_kassa_flutter/redux/state/user_state.dart';
 import 'package:aman_kassa_flutter/redux/store.dart';
 import 'package:flutter_redux/flutter_redux.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter_screenutil/screenutil.dart';
 
 
 class StartUpView extends StatefulWidget {
@@ -16,14 +15,14 @@ class _StartUpViewState extends State<StartUpView> {
   @override
   void initState() {
     super.initState();
-    Redux.store.dispatch(checkUserAction);
+    Redux.store!.dispatch(checkUserAction);
   }
 
   @override
   Widget build(BuildContext context) {
-    ScreenUtil.init(context, width: 411.43, height: 683.43, allowFontScaling: false);
+
     return StoreConnector<AppState, UserState>(
-        converter: (store) => store.state.userState,
+        converter: (store) => store.state.userState!,
         builder: (context, userState) {
           return Scaffold(
               body: Center(

lib/widgets/components/ProductListItem.dart

@@ -9,7 +9,7 @@ class ProductListItem extends StatelessWidget {
   final ProductDao item;
   final int index;
 
-  ProductListItem({this.item, this.index});
+  ProductListItem({required this.item, required this.index});
 
   @override
   Widget build(BuildContext context) {
@@ -26,7 +26,7 @@ class ProductListItem extends StatelessWidget {
                       padding: const EdgeInsets.symmetric(
                           vertical: 8, horizontal: 4),
                       child: Text(
-                        item.name ?? 'name',
+                        item.name,
                         style: productTextStyle,
                       )),
                 ),
@@ -35,7 +35,7 @@ class ProductListItem extends StatelessWidget {
                       padding: const EdgeInsets.symmetric(
                           vertical: 8, horizontal: 4),
                       child: Text(
-                          '${item.price?.toString()} x ${item.count?.toString()} = ${item.total?.toString()}',
+                          '${item.price.toString()} x ${item.count.toString()} = ${item.total.toString()}',
                           textAlign: TextAlign.right,
                           style: productTextStyle)),
                 )
@@ -60,13 +60,13 @@ class ProductListItem extends StatelessWidget {
                         // }),
                         if(item.excise == null)
                           buildClipRect(primaryColor, Icons.remove, () {
-                            Redux.store
+                            Redux.store!
                                 .dispatch(
                                 counterProductFromKassaItems(index, -1));
                           }),
                         if(item.excise == null)
                           buildClipRect(primaryColor, Icons.add, () {
-                            Redux.store
+                            Redux.store!
                                 .dispatch(
                                 counterProductFromKassaItems(index, 1));
                           }),
@@ -75,7 +75,7 @@ class ProductListItem extends StatelessWidget {
                           child: Container(),
                         ),
                         buildClipRect(redColor, Icons.close, () {
-                          Redux.store
+                          Redux.store!
                               .dispatch(removeProductFromKassaItems(index));
                         }),
                       ],

lib/widgets/components/calculator/calculator-button.dart

@@ -2,13 +2,13 @@ import 'package:aman_kassa_flutter/shared/app_colors.dart';
 import 'package:aman_kassa_flutter/widgets/components/calculator/calculator.dart';
 import 'package:flutter/material.dart';
 
-typedef void CalculatorButtonTapCallback({String buttonText});
+typedef void CalculatorButtonTapCallback({required String buttonText});
 
 List operationsBlue = [Calculations.ADD,Calculations.MULTIPLY,Calculations.EQUAL,Calculations.ERASE];
 List operationsRed = [Calculations.CLEAR];
 
 class CalculatorButton extends StatelessWidget {
-  CalculatorButton({this.text, @required this.onTap});
+  CalculatorButton({required this.text, required this.onTap});
 
   final String text;
   final CalculatorButtonTapCallback onTap;

lib/widgets/components/calculator/calculator-buttons.dart

@@ -4,7 +4,7 @@ import 'calculator-button.dart';
 import 'calculator-row.dart';
 
 class CalculatorButtons extends StatelessWidget {
-  CalculatorButtons({@required this.onTap});
+  CalculatorButtons({required this.onTap});
 
   final CalculatorButtonTapCallback onTap;
   final calculatorButtonRows = [

lib/widgets/components/calculator/calculator-row.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'calculator-button.dart';
 
 class CalculatorRow extends StatelessWidget {
-  CalculatorRow({@required this.buttons, @required this.onTap });
+  CalculatorRow({required this.buttons, required this.onTap });
 
   final List<String> buttons;
   final CalculatorButtonTapCallback onTap;

lib/widgets/components/calculator/calculator.dart

@@ -54,7 +54,7 @@ class Calculator {
         var row = items[i];
         if (row.operation == Calculations.MULTIPLY) {
           str += "${row.num1} * ${row.num2}" ;
-          summ += double.parse(row.num1) * double.parse(row.num2);
+          summ += double.parse(row.num1) * double.parse(row.num2!);
         } else {
           str += row.num1;
           summ += double.parse(row.num1) ;
@@ -85,7 +85,7 @@ class Calculator {
         if (row.num2 == null) {
           str += row.num1 + " * ";
         } else {
-          str += row.num1 + " * " + row.num2;
+          str += row.num1 + " * " + row.num2!;
         }
       } else if (row.operation == Calculations.NONE) {
         str += row.num1;
@@ -99,7 +99,7 @@ class Calculator {
     return str;
   }
 
-  static List<CalcModel> action({String value, List<CalcModel> items}) {
+  static List<CalcModel> action({required String value, required List<CalcModel> items}) {
     switch (value) {
       case Calculations.ADD:
         {
@@ -142,7 +142,7 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setNumber({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setNumber({required String value, required List<CalcModel> items}) {
     if (items.isEmpty) {
       items.add(CalcModel(num1: value, operation: Calculations.NONE));
     } else {
@@ -169,8 +169,9 @@ class Calculator {
           } else if (last.operation == Calculations.MULTIPLY) {
             if(last.num2 == null)
               last.num2 = value;
-            else
+            else if(last.num2 !=null) {
-              last.num2 += value;
+              last.num2 = last.num2! + value;
+            }
             last.operation = Calculations.MULTIPLY;
             items.add(last);
           } else if (last.operation == Calculations.ADD) {
@@ -183,7 +184,7 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setPlus({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setPlus({required String value, required List<CalcModel> items}) {
     if (items.isNotEmpty) {
       CalcModel last = items.removeLast();
       if (last.closed) {
@@ -212,11 +213,11 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setDot({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setDot({required String value, required List<CalcModel> items}) {
     if (items.isNotEmpty) {
       CalcModel last = items.removeLast();
       if (last.operation == Calculations.NONE) {
-        if (last.num1?.contains('.') == false) {
+        if (last.num1.contains('.') == false) {
           last.num1 += '.';
         }
         last.operation = Calculations.NONE;
@@ -226,10 +227,10 @@ class Calculator {
         items.add(CalcModel(num1: '0.', operation: Calculations.NONE));
       } else if (last.operation == Calculations.MULTIPLY) {
         if (last.num2 == null) {
-          last.num2 += '0.';
+          last.num2 = last.num2! + '0.';
         } else {
           if (last.num2?.contains('.') == false) {
-            last.num2 += '.';
+            last.num2 = last.num2! + '.';
           }
         }
         last.operation = Calculations.MULTIPLY;
@@ -241,11 +242,11 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setClean({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setClean({required String value, required List<CalcModel> items}) {
     return [];
   }
 
-  static List<CalcModel> _setEqual({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setEqual({required String value, required List<CalcModel> items}) {
     if (items.isNotEmpty) {
       CalcModel last = items.removeLast();
       last.operation = Calculations.EQUAL;
@@ -254,7 +255,7 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setMultiply({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setMultiply({required String value, required List<CalcModel> items}) {
     if (items.isNotEmpty) {
       CalcModel last = items.removeLast();
       if (last.closed) {
@@ -282,7 +283,7 @@ class Calculator {
     return [...items];
   }
 
-  static List<CalcModel> _setBackward({String value, List<CalcModel> items}) {
+  static List<CalcModel> _setBackward({required String value, required List<CalcModel> items}) {
     if (items.isNotEmpty) {
       items.removeLast();
     }

lib/widgets/components/calculator/number-display.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:auto_size_text/auto_size_text.dart';
 
 class NumberDisplay extends StatelessWidget {
-  NumberDisplay({this.value});
+  NumberDisplay({required this.value});
 
   final String value;
 

lib/widgets/dialog_manager.dart

@@ -7,16 +7,16 @@ import 'package:flutter/services.dart';
 import 'package:mask_text_input_formatter/mask_text_input_formatter.dart';
 
 class DialogManager extends StatefulWidget {
-  final Widget child;
+  final Widget? child;
 
-  DialogManager({Key key, this.child}) : super(key: key);
+  DialogManager({Key? key, this.child}) : super(key: key);
 
   _DialogManagerState createState() => _DialogManagerState();
 }
 
 class _DialogManagerState extends State<DialogManager> {
   final DialogService _dialogService = locator<DialogService>();
-  TextEditingController _controller;
+  late TextEditingController _controller;
 
   @override
   void initState() {
@@ -33,7 +33,7 @@ class _DialogManagerState extends State<DialogManager> {
 
   @override
   Widget build(BuildContext context) {
-    return widget.child;
+    return widget.child ?? Container();
   }
 
   void _showDialog(DialogRequest request) {
@@ -59,7 +59,7 @@ class _DialogManagerState extends State<DialogManager> {
               actions: <Widget>[
                 if (isConfirmationDialog)
                   FlatButton(
-                    child: Text(request.cancelTitle),
+                    child: Text(request.cancelTitle!),
                     onPressed: () {
                       _dialogService
                           .dialogComplete(DialogResponse(confirmed: false));
@@ -132,7 +132,7 @@ class _DialogManagerState extends State<DialogManager> {
                   RaisedButton(
                     color: redColor,
                     child: Text(
-                      request.cancelTitle,
+                      request.cancelTitle!,
                       style: TextStyle(fontSize: 18),
                     ),
                     onPressed: () {
@@ -163,7 +163,7 @@ class _DialogManagerState extends State<DialogManager> {
     dialogController.whenComplete(() {
       //hook when press overlay and response not completed
       if (_dialogService.completer != null) {
-        _dialogService.completer.complete(DialogResponse(confirmed: false));
+        _dialogService.completer!.complete(DialogResponse(confirmed: false));
       }
     });
   }

lib/widgets/fields/aman_icon_button.dart

@@ -11,12 +11,12 @@ class AmanIconButton extends StatefulWidget {
   final IconData icon;
   const AmanIconButton(
       {
-        @required this.title,
+        required this.title,
         this.busy = false,
-        @required this.onPressed,
+        required this.onPressed,
         this.enabled = true,
-        this.mainColor,
+        required this.mainColor,
-        @required this.icon
+        required this.icon
       });
 
   @override
@@ -29,7 +29,7 @@ class _AmanIconButtonState extends State<AmanIconButton> {
     return GestureDetector(
       child: InkWell(
         borderRadius: BorderRadius.circular(15),
-        onTap: widget.busy ? () {} : widget.onPressed,
+        onTap: widget.busy ? () {} : () => widget.onPressed(),
         child: Container(
           //height: 75,
           width: 120,

lib/widgets/fields/aman_icon_button_horizontal.dart

@@ -10,13 +10,14 @@ class AmanIconButtonHorizontal extends StatefulWidget {
   final Color inactiveColor;
   final bool selected;
   final IconData icon;
+
   const AmanIconButtonHorizontal(
-      {@required this.title,
+      {required this.title,
-      this.onPressed,
+      required this.onPressed,
       this.activeColor = primaryColor,
       this.inactiveColor = Colors.black26,
       this.selected = false,
-      @required this.icon});
+      required this.icon});
 
   @override
   _AmanIconButtonHorizontalState createState() =>
@@ -29,7 +30,7 @@ class _AmanIconButtonHorizontalState extends State<AmanIconButtonHorizontal> {
     return GestureDetector(
       child: InkWell(
         borderRadius: BorderRadius.circular(3),
-        onTap: widget.onPressed,
+        onTap: () => widget.onPressed(),
         child: Row(
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[

lib/widgets/fields/busy_button.dart

@@ -9,12 +9,12 @@ class BusyButton extends StatefulWidget {
   final String title;
   final Function onPressed;
   final bool enabled;
-  final Color mainColor;
+  final Color? mainColor;
 
   const BusyButton({
-    @required this.title,
+    required this.title,
     this.busy = false,
-    @required this.onPressed,
+    required this.onPressed,
     this.enabled = true,
     this.mainColor,
   });
@@ -38,7 +38,7 @@ class _BusyButtonState extends State<BusyButton> {
       child: Material(
         type: MaterialType.transparency,
         child: InkWell(
-          onTap: widget.busy || !widget.enabled ? null : widget.onPressed,
+          onTap: widget.busy || !widget.enabled ? null : () => widget.onPressed(),
           child: AnimatedContainer(
             height: widget.busy ? 45 : 45,
             //width: widget.busy ? 40 : 40,

lib/widgets/fields/busy_button_icon.dart

@@ -8,16 +8,16 @@ class BusyButtonIcon extends StatefulWidget {
   final String title;
   final Function onPressed;
   final bool enabled;
-  final Color mainColor;
+  final Color? mainColor;
   final IconData icon;
 
   const BusyButtonIcon(
-      {@required this.title,
+      {required this.title,
       this.busy = false,
-      @required this.onPressed,
+      required this.onPressed,
       this.enabled = true,
       this.mainColor,
-      this.icon});
+      required this.icon});
 
   @override
   _BusyButtonIconState createState() => _BusyButtonIconState();
@@ -38,7 +38,7 @@ class _BusyButtonIconState extends State<BusyButtonIcon> {
       child: Material(
         type: MaterialType.transparency,
         child: InkWell(
-          onTap: widget.busy || !widget.enabled ? null : widget.onPressed,
+          onTap: widget.busy || !widget.enabled ? null : () => widget.onPressed(),
           child: AnimatedContainer(
             height: widget.busy ? 45 : 45,
             //width: widget.busy ? 40 : 40,
@@ -68,7 +68,9 @@ class _BusyButtonIconState extends State<BusyButtonIcon> {
                             Text(
                               widget.title,
                               textAlign: TextAlign.center,
-                              style: widget.enabled ? buttonTitleTextStyle : buttonTitleDisableTextStyle,
+                              style: widget.enabled
+                                  ? buttonTitleTextStyle
+                                  : buttonTitleDisableTextStyle,
                               maxLines: 1,
                             ),
                           ],

lib/widgets/fields/input_field.dart

@@ -12,23 +12,23 @@ class InputField extends StatefulWidget {
   final bool password;
   final bool isReadOnly;
   final String placeholder;
-  final String validationMessage;
+  final String? validationMessage;
-  final Function enterPressed;
+  final Function? enterPressed;
   final bool smallVersion;
-  final FocusNode fieldFocusNode;
+  final FocusNode? fieldFocusNode;
-  final FocusNode nextFocusNode;
+  final FocusNode? nextFocusNode;
   final TextInputAction textInputAction;
   final bool multiline;
-  final String additionalNote;
+  final String? additionalNote;
-  final Function(String) onChanged;
+  final Function(String)? onChanged;
-  final TextInputFormatter formatter;
+  final TextInputFormatter? formatter;
-  final String initialValue;
+  final String? initialValue;
-  final String labelText;
+  final String? labelText;
 
   InputField(
       {
-      this.controller,
+      required this.controller,
-      @required this.placeholder,
+      required this.placeholder,
       this.enterPressed,
       this.fieldFocusNode,
       this.nextFocusNode,
@@ -49,7 +49,7 @@ class InputField extends StatefulWidget {
 }
 
 class _InputFieldState extends State<InputField> {
-  bool isPassword;
+  bool isPassword = false;
   double fieldHeight = 55;
 
   @override
@@ -63,7 +63,7 @@ class _InputFieldState extends State<InputField> {
     return Column(
       crossAxisAlignment: CrossAxisAlignment.start,
       children: <Widget>[
-        if (widget.labelText != null) NoteText(widget.labelText),
+        if (widget.labelText != null) NoteText(widget.labelText!),
         Container(          
           //height: widget.smallVersion ? 40 : fieldHeight,
           constraints: BoxConstraints(minHeight: widget.smallVersion ? 40 : fieldHeight),
@@ -84,16 +84,16 @@ class _InputFieldState extends State<InputField> {
                   onChanged: widget.onChanged,
                   initialValue: widget.initialValue,
                   inputFormatters:
-                      widget.formatter != null ? [widget.formatter] : null,
+                      widget.formatter != null ? [widget.formatter!] : null,
                   onEditingComplete: () {
                     if (widget.enterPressed != null) {
                       FocusScope.of(context).requestFocus(FocusNode());
-                      widget.enterPressed();
+                      widget.enterPressed!();
                     }
                   },
                   onFieldSubmitted: (value) {
                     if (widget.nextFocusNode != null) {
-                      widget.nextFocusNode.requestFocus();
+                      widget.nextFocusNode!.requestFocus();
                     }
                   },
                   obscureText: isPassword,
@@ -123,11 +123,11 @@ class _InputFieldState extends State<InputField> {
         ),
         if (widget.validationMessage != null)
           NoteText(
-            widget.validationMessage,
+            widget.validationMessage!,
             color: Colors.red,
           ),
         if (widget.additionalNote != null) verticalSpace(5),
-        if (widget.additionalNote != null) NoteText(widget.additionalNote),
+        if (widget.additionalNote != null) NoteText(widget.additionalNote!),
         verticalSpaceSmall
       ],
     );

lib/widgets/fields/note_text.dart

@@ -3,9 +3,9 @@ import 'package:flutter/material.dart';
 
 class NoteText extends StatelessWidget {
   final String text;
-  final TextAlign textAlign;
+  final TextAlign? textAlign;
-  final Color color;
+  final Color? color;
-  final double fontSize;
+  final double? fontSize;
   const NoteText(this.text, {this.textAlign, this.color, this.fontSize});
 
   @override

lib/widgets/fields/text_link.dart

@@ -3,13 +3,13 @@ import 'package:flutter/material.dart';
 
 class TextLink extends StatelessWidget {
   final String text;
-  final Function onPressed;
+  final Function? onPressed;
   const TextLink(this.text, {this.onPressed});
 
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
-      onTap: onPressed,
+      onTap: () => onPressed,
       child: Text(
         text,
         style: TextStyle(fontWeight: FontWeight.w700, fontSize: 14, color: textColor),

pubspec.lock

@@ -7,35 +7,28 @@ packages:
       name: archive
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.13"
+    version: "3.1.9"
-  args:
-    dependency: transitive
-    description:
-      name: args
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.6.0"
   async:
     dependency: transitive
     description:
       name: async
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.8.1"
+    version: "2.8.2"
   auto_size_text:
     dependency: "direct main"
     description:
       name: auto_size_text
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "3.0.0"
-  barcode_scan:
+  barcode_scan2:
     dependency: "direct main"
     description:
-      name: barcode_scan
+      name: barcode_scan2
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.1"
+    version: "4.2.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -49,7 +42,7 @@ packages:
       name: characters
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.0"
+    version: "1.2.0"
   charcode:
     dependency: transitive
     description:
@@ -63,7 +56,7 @@ packages:
       name: charset_converter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "2.0.0"
   clock:
     dependency: transitive
     description:
@@ -78,76 +71,62 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.15.0"
-  convert:
-    dependency: transitive
-    description:
-      name: convert
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.1"
   crypto:
     dependency: transitive
     description:
       name: crypto
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.5"
+    version: "3.0.1"
   csslib:
     dependency: transitive
     description:
       name: csslib
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.16.2"
+    version: "0.17.1"
   cupertino_icons:
     dependency: "direct main"
     description:
       name: cupertino_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.3"
+    version: "1.0.4"
   device_info:
     dependency: "direct main"
     description:
       name: device_info
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.0"
+    version: "2.0.3"
   device_info_platform_interface:
     dependency: transitive
     description:
       name: device_info_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.1"
+    version: "2.0.1"
   equatable:
     dependency: "direct main"
     description:
       name: equatable
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.6"
+    version: "2.0.3"
   esc_pos_bluetooth:
     dependency: "direct main"
     description:
       name: esc_pos_bluetooth
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.2.8"
+    version: "0.4.1"
   esc_pos_utils:
     dependency: "direct main"
     description:
       name: esc_pos_utils
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.6"
+    version: "1.1.0"
-  esys_flutter_share:
-    dependency: "direct main"
-    description:
-      name: esys_flutter_share
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.0.2"
   fake_async:
     dependency: transitive
     description:
@@ -175,7 +154,7 @@ packages:
       name: fixnum
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.10.11"
+    version: "1.0.0"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -187,35 +166,35 @@ packages:
       name: flutter_bluetooth_basic
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.5"
+    version: "0.1.7"
   flutter_lock_screen:
     dependency: "direct main"
     description:
       name: flutter_lock_screen
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.8"
+    version: "2.0.1"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
       name: flutter_plugin_android_lifecycle
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.11"
+    version: "2.0.5"
   flutter_redux:
     dependency: "direct main"
     description:
       name: flutter_redux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.7.0"
+    version: "0.8.2"
   flutter_screenutil:
     dependency: "direct main"
     description:
       name: flutter_screenutil
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.3.1"
+    version: "5.1.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -232,63 +211,63 @@ packages:
       name: gbk_codec
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.2"
+    version: "0.4.0"
   get_it:
     dependency: "direct main"
     description:
       name: get_it
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.0.6"
+    version: "7.2.0"
   google_fonts:
     dependency: "direct main"
     description:
       name: google_fonts
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.2"
+    version: "2.2.0"
   hex:
     dependency: transitive
     description:
       name: hex
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.2.0"
   html:
     dependency: transitive
     description:
       name: html
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.14.0+4"
+    version: "0.15.0"
   http:
     dependency: "direct main"
     description:
       name: http
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.2"
+    version: "0.13.4"
   http_parser:
     dependency: transitive
     description:
       name: http_parser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.4"
+    version: "4.0.0"
   image:
     dependency: transitive
     description:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.19"
+    version: "3.1.1"
   intl:
     dependency: "direct main"
     description:
       name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.16.1"
+    version: "0.17.0"
   js:
     dependency: transitive
     description:
@@ -302,42 +281,42 @@ packages:
       name: json_annotation
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.1"
+    version: "4.4.0"
   local_auth:
     dependency: "direct main"
     description:
       name: local_auth
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.6.3+4"
+    version: "1.1.10"
   logger:
     dependency: "direct main"
     description:
       name: logger
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.4"
+    version: "1.1.0"
   mask_text_input_formatter:
     dependency: "direct main"
     description:
       name: mask_text_input_formatter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.2.1"
+    version: "2.1.0"
   matcher:
     dependency: transitive
     description:
       name: matcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.12.10"
+    version: "0.12.11"
   material_design_icons_flutter:
     dependency: "direct main"
     description:
       name: material_design_icons_flutter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.5955"
+    version: "5.0.6595"
   meta:
     dependency: transitive
     description:
@@ -365,196 +344,217 @@ packages:
       name: path_provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.6.28"
+    version: "2.0.8"
+  path_provider_android:
+    dependency: transitive
+    description:
+      name: path_provider_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.11"
+  path_provider_ios:
+    dependency: transitive
+    description:
+      name: path_provider_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.7"
   path_provider_linux:
     dependency: transitive
     description:
       name: path_provider_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1+2"
+    version: "2.1.5"
   path_provider_macos:
     dependency: transitive
     description:
       name: path_provider_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.4+8"
+    version: "2.0.5"
   path_provider_platform_interface:
     dependency: transitive
     description:
       name: path_provider_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.3"
   path_provider_windows:
     dependency: transitive
     description:
       name: path_provider_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.5"
+    version: "2.0.5"
-  pedantic:
-    dependency: transitive
-    description:
-      name: pedantic
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.11.1"
   permission_handler:
     dependency: "direct main"
     description:
       name: permission_handler
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.1.0+2"
+    version: "8.3.0"
   permission_handler_platform_interface:
     dependency: transitive
     description:
       name: permission_handler_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.2"
+    version: "3.7.0"
   petitparser:
     dependency: transitive
     description:
       name: petitparser
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.1.0"
+    version: "4.4.0"
   platform:
     dependency: transitive
     description:
       name: platform
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.0.2"
+    version: "3.1.0"
   plugin_platform_interface:
     dependency: transitive
     description:
       name: plugin_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3"
+    version: "2.1.2"
   process:
     dependency: transitive
     description:
       name: process
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.2.3"
+    version: "4.2.4"
   protobuf:
     dependency: transitive
     description:
       name: protobuf
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.4"
+    version: "2.0.1"
   provider:
     dependency: "direct main"
     description:
       name: provider
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.3.3"
+    version: "6.0.2"
   qr:
     dependency: transitive
     description:
       name: qr
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.0"
+    version: "2.1.0"
   qr_flutter:
     dependency: "direct main"
     description:
       name: qr_flutter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "3.2.0"
+    version: "4.0.0"
   redux:
     dependency: "direct main"
     description:
       name: redux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.0+3"
+    version: "5.0.0"
   redux_persist:
     dependency: "direct main"
     description:
       name: redux_persist
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.4"
+    version: "0.9.0"
   redux_persist_flutter:
     dependency: "direct main"
     description:
       name: redux_persist_flutter
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.8.3"
+    version: "0.9.0"
   redux_thunk:
     dependency: "direct main"
     description:
       name: redux_thunk
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.0"
   responsive_builder:
     dependency: "direct main"
     description:
       name: responsive_builder
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.3.0"
+    version: "0.4.1"
   rxdart:
     dependency: transitive
     description:
       name: rxdart
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.23.1"
+    version: "0.26.0"
   shared_preferences:
     dependency: "direct main"
     description:
       name: shared_preferences
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.5.12+4"
+    version: "2.0.12"
+  shared_preferences_android:
+    dependency: transitive
+    description:
+      name: shared_preferences_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.10"
+  shared_preferences_ios:
+    dependency: transitive
+    description:
+      name: shared_preferences_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "2.0.9"
   shared_preferences_linux:
     dependency: transitive
     description:
       name: shared_preferences_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.2+4"
+    version: "2.0.4"
   shared_preferences_macos:
     dependency: transitive
     description:
       name: shared_preferences_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1+11"
+    version: "2.0.2"
   shared_preferences_platform_interface:
     dependency: transitive
     description:
       name: shared_preferences_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.4"
+    version: "2.0.0"
   shared_preferences_web:
     dependency: transitive
     description:
       name: shared_preferences_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2+7"
+    version: "2.0.3"
   shared_preferences_windows:
     dependency: transitive
     description:
       name: shared_preferences_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.2+3"
+    version: "2.0.4"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -573,14 +573,14 @@ packages:
       name: sqflite
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.3.2+4"
+    version: "2.0.2"
   sqflite_common:
     dependency: transitive
     description:
       name: sqflite_common
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.3+3"
+    version: "2.2.0"
   stack_trace:
     dependency: transitive
     description:
@@ -608,7 +608,7 @@ packages:
       name: synchronized
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.0+2"
+    version: "3.0.0"
   term_glyph:
     dependency: transitive
     description:
@@ -622,7 +622,7 @@ packages:
       name: test_api
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.4.2"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
@@ -636,70 +636,91 @@ packages:
       name: url_launcher
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.7.10"
+    version: "6.0.18"
+  url_launcher_android:
+    dependency: transitive
+    description:
+      name: url_launcher_android
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.0.14"
+  url_launcher_ios:
+    dependency: transitive
+    description:
+      name: url_launcher_ios
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "6.0.14"
   url_launcher_linux:
     dependency: transitive
     description:
       name: url_launcher_linux
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1+4"
+    version: "2.0.3"
   url_launcher_macos:
     dependency: transitive
     description:
       name: url_launcher_macos
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1+9"
+    version: "2.0.3"
   url_launcher_platform_interface:
     dependency: transitive
     description:
       name: url_launcher_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.0.9"
+    version: "2.0.5"
   url_launcher_web:
     dependency: transitive
     description:
       name: url_launcher_web
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.5+3"
+    version: "2.0.6"
   url_launcher_windows:
     dependency: transitive
     description:
       name: url_launcher_windows
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.0.1+3"
+    version: "2.0.2"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
+  vocsy_esys_flutter_share:
+    dependency: "direct main"
+    description:
+      name: vocsy_esys_flutter_share
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.0.0"
   win32:
     dependency: transitive
     description:
       name: win32
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.2.9"
+    version: "2.3.8"
   xdg_directories:
     dependency: transitive
     description:
       name: xdg_directories
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.2"
+    version: "0.2.0"
   xml:
     dependency: transitive
     description:
       name: xml
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.5.1"
+    version: "5.3.1"
 sdks:
-  dart: ">=2.13.0 <3.0.0"
+  dart: ">=2.15.0 <3.0.0"
-  flutter: ">=1.22.2"
+  flutter: ">=2.5.0"

pubspec.yaml

@@ -2,42 +2,42 @@ name: aman_kassa_flutter
 description: A new Flutter project.
 version: 1.2.3+36
 environment:
-    sdk: '>=2.3.0 <3.0.0'
+    sdk: '>=2.15.0 <3.0.0'
 dependencies:
     flutter:
         sdk: flutter
-    cupertino_icons: ^0.1.3
+    cupertino_icons: ^1.0.4
-    redux: ^4.0.0+3
+    redux: ^5.0.0
-    flutter_redux: ^0.7.0
+    flutter_redux: ^0.8.2
-    redux_thunk: ^0.3.0
+    redux_thunk: ^0.4.0
-    redux_persist: ^0.8.4
+    redux_persist: ^0.9.0
-    redux_persist_flutter: ^0.8.3
+    redux_persist_flutter: ^0.9.0
-    responsive_builder: ^0.3.0
+    responsive_builder: ^0.4.1
-    provider: ^4.3.2+4
+    provider: ^6.0.2
-    logger: ^0.9.4
+    logger: ^1.1.0
-    get_it: ^5.0.4
+    get_it: ^7.2.0
-    equatable: ^1.2.5
+    equatable: ^2.0.3
-    http: ^0.12.2
+    http: ^0.13.4
-    sqflite: ^1.3.2+2
+    sqflite: ^2.0.2
-    path_provider: ^1.6.27
+    path_provider: ^2.0.8
-    google_fonts: ^1.1.1
+    google_fonts: ^2.2.0
-    material_design_icons_flutter: ^4.0.5855
+    material_design_icons_flutter: ^5.0.6595
-    intl: ^0.16.1
+    intl: ^0.17.0
-    barcode_scan: ^3.0.1
+    barcode_scan2: ^4.2.0
-    device_info: ^1.0.0
+    device_info: ^2.0.3
-    esys_flutter_share: ^1.0.2
+    vocsy_esys_flutter_share: ^1.0.0
-    auto_size_text: ^2.1.0
+    auto_size_text: ^3.0.0
-    url_launcher: ^5.7.10
+    url_launcher: ^6.0.18
-    qr_flutter: ^3.2.0
+    qr_flutter: ^4.0.0
-    mask_text_input_formatter: ^1.2.1
+    mask_text_input_formatter: ^2.1.0
-    flutter_screenutil: ^2.3.1
+    flutter_screenutil: ^5.1.0
-    shared_preferences: ^0.5.12+4
+    shared_preferences: ^2.0.12
-    flutter_lock_screen: ^1.0.8
+    flutter_lock_screen: ^2.0.1
-    local_auth: ^0.6.3+4
+    local_auth: ^1.1.10
-    esc_pos_bluetooth: ^0.2.8
+    esc_pos_bluetooth: ^0.4.1
-    esc_pos_utils: ^0.3.6 # no edit for esc_pos_bluetooth: ^0.2.8
+    esc_pos_utils: ^1.1.0 # no edit for esc_pos_bluetooth: ^0.2.8
-    charset_converter: ^1.0.3
+    charset_converter: ^2.0.0
-    permission_handler: ^5.0.1+2
+    permission_handler: ^8.3.0
 dev_dependencies:
     flutter_test:
         sdk: flutter