android:exported="true"

android version started from 40

android/app/build.gradle

@@ -34,7 +34,7 @@ if (keystorePropertiesFile.exists()) {
 
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     sourceSets {
         main.java.srcDirs += 'src/main/kotlin'
@@ -47,7 +47,7 @@ android {
     defaultConfig {
         applicationId "kz.com.aman.kassa"
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 31
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
         multiDexEnabled true

android/app/src/main/AndroidManifest.xml

@@ -14,17 +14,17 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 
 
-
+    <!--        android:name="io.flutter.app.FlutterApplication"-->
     <application
-        tools:replace="android:label"
-        android:name="io.flutter.app.FlutterApplication"
-        android:icon="@mipmap/ic_launcher"
+        android:name="${applicationName}"
         android:label="Аман Касса"
+        android:icon="@mipmap/ic_launcher"
         android:allowBackup="false"
         android:roundIcon="@mipmap/ic_launcher_rounded"
         >
         <activity
             android:name=".MainActivity"
+            android:exported="true"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
             android:launchMode="singleTop"

android/app/src/main/kotlin/kz/com/aman/kassa/MainActivity.kt

@@ -1,6 +1,7 @@
 package kz.com.aman.kassa
 
 import android.app.Activity
+import android.content.ActivityNotFoundException
 import android.content.ComponentName
 import android.content.Intent
 import android.os.Build
@@ -105,17 +106,30 @@ class MainActivity : FlutterActivity() {
     }
 
     private fun startOperation(operationType: OperationType, inputJsonData: String?) {
-        val intent = Intent()
-        intent.component = ComponentName("ru.m4bank.softpos.halyk", "ru.m4bank.feature.externalapplication.ExternalApplicationActivity")
-        intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
-        // intent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
-        intent.putExtra(externalOperationTypeKey, operationType.code)
-        intent.putExtra(externalInputDataKey, inputJsonData)
-        startActivityForResult(intent, externalApplicationRequestCode)
+        try {
+
+
+            val intent = Intent()
+            intent.component = ComponentName("ru.m4bank.softpos.halyk", "ru.m4bank.feature.externalapplication.ExternalApplicationActivity")
+            intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
+            // intent.flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
+            intent.putExtra(externalOperationTypeKey, operationType.code)
+            intent.putExtra(externalInputDataKey, inputJsonData)
+
+            if (intent.resolveActivity(packageManager) != null) {
+                startActivityForResult(intent, externalApplicationRequestCode)
+            } else {
+                _result.error("008", "Не удалось найти подходящее приложение", "aaa")
+            }
+        } catch (e: ActivityNotFoundException) {
+            _result.error("008", "Не удалось найти подходящее приложение", "aaa")
+        }
+
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
         super.onActivityResult(requestCode, resultCode, data)
+        try {
         if (requestCode == externalApplicationRequestCode) {
             println("---------------")
             println(requestCode)
@@ -140,6 +154,9 @@ class MainActivity : FlutterActivity() {
 //            } else
 //                _result.success(null)
         }
+        } catch (e: IllegalStateException) {
+            print("IllegalStateException")
+        }
 
     }
 

android/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.61'
+    ext.kotlin_version = '1.6.10'
     repositories {
         google()
         jcenter()

android/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip

ios/Flutter/AppFrameworkInfo.plist

@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>8.0</string>
+  <string>9.0</string>
 </dict>
 </plist>

ios/Podfile.lock

@@ -1,98 +1,111 @@
 PODS:
-  - barcode_scan (0.0.1):
+  - barcode_scan2 (0.0.1):
     - Flutter
     - MTBBarcodeScanner
     - SwiftProtobuf
+  - bluetooth_print (0.0.1):
+    - Flutter
   - charset_converter (0.0.1):
     - Flutter
   - device_info (0.0.1):
     - Flutter
-  - esys_flutter_share (0.0.1):
-    - Flutter
   - Flutter (1.0.0)
-  - flutter_bluetooth_basic (0.0.1):
+  - flutter_blue (0.0.1):
     - Flutter
+    - flutter_blue/Protos (= 0.0.1)
+  - flutter_blue/Protos (0.0.1):
+    - Flutter
+    - Protobuf (~> 3.11.4)
   - FMDB (2.7.5):
     - FMDB/standard (= 2.7.5)
   - FMDB/standard (2.7.5)
   - local_auth (0.0.1):
     - Flutter
   - MTBBarcodeScanner (5.0.11)
-  - path_provider (0.0.1):
+  - path_provider_ios (0.0.1):
     - Flutter
   - "permission_handler (5.1.0+2)":
     - Flutter
-  - shared_preferences (0.0.1):
+  - Protobuf (3.11.4)
+  - shared_preferences_ios (0.0.1):
     - Flutter
   - sqflite (0.0.2):
     - Flutter
     - FMDB (>= 2.7.5)
-  - SwiftProtobuf (1.9.0)
-  - url_launcher (0.0.1):
+  - SwiftProtobuf (1.18.0)
+  - url_launcher_ios (0.0.1):
+    - Flutter
+  - vocsy_esys_flutter_share (0.0.1):
     - Flutter
 
 DEPENDENCIES:
-  - barcode_scan (from `.symlinks/plugins/barcode_scan/ios`)
+  - barcode_scan2 (from `.symlinks/plugins/barcode_scan2/ios`)
+  - bluetooth_print (from `.symlinks/plugins/bluetooth_print/ios`)
   - charset_converter (from `.symlinks/plugins/charset_converter/ios`)
   - device_info (from `.symlinks/plugins/device_info/ios`)
-  - esys_flutter_share (from `.symlinks/plugins/esys_flutter_share/ios`)
   - Flutter (from `Flutter`)
-  - flutter_bluetooth_basic (from `.symlinks/plugins/flutter_bluetooth_basic/ios`)
+  - flutter_blue (from `.symlinks/plugins/flutter_blue/ios`)
   - local_auth (from `.symlinks/plugins/local_auth/ios`)
-  - path_provider (from `.symlinks/plugins/path_provider/ios`)
+  - path_provider_ios (from `.symlinks/plugins/path_provider_ios/ios`)
   - permission_handler (from `.symlinks/plugins/permission_handler/ios`)
-  - shared_preferences (from `.symlinks/plugins/shared_preferences/ios`)
+  - shared_preferences_ios (from `.symlinks/plugins/shared_preferences_ios/ios`)
   - sqflite (from `.symlinks/plugins/sqflite/ios`)
-  - url_launcher (from `.symlinks/plugins/url_launcher/ios`)
+  - url_launcher_ios (from `.symlinks/plugins/url_launcher_ios/ios`)
+  - vocsy_esys_flutter_share (from `.symlinks/plugins/vocsy_esys_flutter_share/ios`)
 
 SPEC REPOS:
   trunk:
     - FMDB
     - MTBBarcodeScanner
+    - Protobuf
     - SwiftProtobuf
 
 EXTERNAL SOURCES:
-  barcode_scan:
-    :path: ".symlinks/plugins/barcode_scan/ios"
+  barcode_scan2:
+    :path: ".symlinks/plugins/barcode_scan2/ios"
+  bluetooth_print:
+    :path: ".symlinks/plugins/bluetooth_print/ios"
   charset_converter:
     :path: ".symlinks/plugins/charset_converter/ios"
   device_info:
     :path: ".symlinks/plugins/device_info/ios"
-  esys_flutter_share:
-    :path: ".symlinks/plugins/esys_flutter_share/ios"
   Flutter:
     :path: Flutter
-  flutter_bluetooth_basic:
-    :path: ".symlinks/plugins/flutter_bluetooth_basic/ios"
+  flutter_blue:
+    :path: ".symlinks/plugins/flutter_blue/ios"
   local_auth:
     :path: ".symlinks/plugins/local_auth/ios"
-  path_provider:
-    :path: ".symlinks/plugins/path_provider/ios"
+  path_provider_ios:
+    :path: ".symlinks/plugins/path_provider_ios/ios"
   permission_handler:
     :path: ".symlinks/plugins/permission_handler/ios"
-  shared_preferences:
-    :path: ".symlinks/plugins/shared_preferences/ios"
+  shared_preferences_ios:
+    :path: ".symlinks/plugins/shared_preferences_ios/ios"
   sqflite:
     :path: ".symlinks/plugins/sqflite/ios"
-  url_launcher:
-    :path: ".symlinks/plugins/url_launcher/ios"
+  url_launcher_ios:
+    :path: ".symlinks/plugins/url_launcher_ios/ios"
+  vocsy_esys_flutter_share:
+    :path: ".symlinks/plugins/vocsy_esys_flutter_share/ios"
 
 SPEC CHECKSUMS:
-  barcode_scan: a5c27959edfafaa0c771905bad0b29d6d39e4479
+  barcode_scan2: 0af2bb63c81b4565aab6cd78278e4c0fa136dbb0
+  bluetooth_print: da8f47e8881a0b1f0fd8d73cd6fa84c9bd41ac28
   charset_converter: 215c7b04932ec2b9ba43be96a9bc34afed3e5322
   device_info: d7d233b645a32c40dfdc212de5cf646ca482f175
-  esys_flutter_share: 403498dab005b36ce1f8d7aff377e81f0621b0b4
-  Flutter: 434fef37c0980e73bb6479ef766c45957d4b510c
-  flutter_bluetooth_basic: 0e4e27e22b50b3a25cc1d1e131953feb4af414f4
+  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
+  flutter_blue: eeb381dc4727a0954dede73515f683865494b370
   FMDB: 2ce00b547f966261cd18927a3ddb07cb6f3db82a
-  local_auth: 25938960984c3a7f6e3253e3f8d962fdd16852bd
+  local_auth: ef62030a2731330b95df7ef1331bd15f6a64b8a6
   MTBBarcodeScanner: f453b33c4b7dfe545d8c6484ed744d55671788cb
-  path_provider: abfe2b5c733d04e238b0d8691db0cfd63a27a93c
+  path_provider_ios: 7d7ce634493af4477d156294792024ec3485acd5
   permission_handler: ccb20a9fad0ee9b1314a52b70b76b473c5f8dab0
-  shared_preferences: af6bfa751691cdc24be3045c43ec037377ada40d
+  Protobuf: 176220c526ad8bd09ab1fb40a978eac3fef665f7
+  shared_preferences_ios: aef470a42dc4675a1cdd50e3158b42e3d1232b32
   sqflite: 6d358c025f5b867b29ed92fc697fd34924e11904
-  SwiftProtobuf: ecbec1be9036d15655f6b3443a1c4ea693c97932
-  url_launcher: 6fef411d543ceb26efce54b05a0a40bfd74cbbef
+  SwiftProtobuf: c3c12645230d9b09c72267e0de89468c5543bd86
+  url_launcher_ios: 02f1989d4e14e998335b02b67a7590fa34f971af
+  vocsy_esys_flutter_share: 98b79fad467203ababde56a7289ac90da6a4ddf5
 
 PODFILE CHECKSUM: 5aafc9b59da66d8d46f05cbbbd21261eb9757176
 

ios/Runner.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 50;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -166,7 +166,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "The Chromium Authors";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -256,31 +256,35 @@
 				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
 				"${BUILT_PRODUCTS_DIR}/FMDB/FMDB.framework",
 				"${BUILT_PRODUCTS_DIR}/MTBBarcodeScanner/MTBBarcodeScanner.framework",
+				"${BUILT_PRODUCTS_DIR}/Protobuf/protobuf.framework",
 				"${BUILT_PRODUCTS_DIR}/SwiftProtobuf/SwiftProtobuf.framework",
-				"${BUILT_PRODUCTS_DIR}/barcode_scan/barcode_scan.framework",
+				"${BUILT_PRODUCTS_DIR}/barcode_scan2/barcode_scan2.framework",
 				"${BUILT_PRODUCTS_DIR}/charset_converter/charset_converter.framework",
 				"${BUILT_PRODUCTS_DIR}/device_info/device_info.framework",
-				"${BUILT_PRODUCTS_DIR}/esys_flutter_share/esys_flutter_share.framework",
+				"${BUILT_PRODUCTS_DIR}/flutter_blue/flutter_blue.framework",
 				"${BUILT_PRODUCTS_DIR}/local_auth/local_auth.framework",
-				"${BUILT_PRODUCTS_DIR}/path_provider/path_provider.framework",
-				"${BUILT_PRODUCTS_DIR}/shared_preferences/shared_preferences.framework",
+				"${BUILT_PRODUCTS_DIR}/path_provider_ios/path_provider_ios.framework",
+				"${BUILT_PRODUCTS_DIR}/shared_preferences_ios/shared_preferences_ios.framework",
 				"${BUILT_PRODUCTS_DIR}/sqflite/sqflite.framework",
-				"${BUILT_PRODUCTS_DIR}/url_launcher/url_launcher.framework",
+				"${BUILT_PRODUCTS_DIR}/url_launcher_ios/url_launcher_ios.framework",
+				"${BUILT_PRODUCTS_DIR}/vocsy_esys_flutter_share/vocsy_esys_flutter_share.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FMDB.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/MTBBarcodeScanner.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/protobuf.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SwiftProtobuf.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/barcode_scan.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/barcode_scan2.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/charset_converter.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/device_info.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/esys_flutter_share.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/flutter_blue.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/local_auth.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/shared_preferences.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider_ios.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/shared_preferences_ios.framework",
 				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/sqflite.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/url_launcher.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/url_launcher_ios.framework",
+				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/vocsy_esys_flutter_share.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
@@ -376,7 +380,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -401,7 +405,10 @@
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
@@ -463,7 +470,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -512,7 +519,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SUPPORTED_PLATFORMS = iphoneos;
@@ -538,7 +545,10 @@
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
@@ -570,7 +580,10 @@
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",

ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

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 parentIn;
-  String name;
-  int appCompanyId;
+  int? id;
+  int? parentIn;
+  String name = '';
+  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 articul;
-  String name;
-  double price;
-  int categoryId;
-  String ean;
-  int appCompanyId;
-  String description;
-  double showPrice;
-  int okei;
-  double discount;
+  int? id;
+  int articul = -1;
+  String name = '';
+  double price = -1;
+  int categoryId = -1;
+  String? ean;
+  int? appCompanyId;
+  String? description;
+  double? showPrice;
+  int? okei;
+  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 articul;
-  String name;
-  double price;
-  String ean;
-  int appCompanyId;
-  String description;
-  double showPrice;
-  String okei;
-  double discount;
+  int? id;
+  int articul = -1;
+  String name = '';
+  double price = -1;
+  int? appCompanyId;
+  String? description;
+  double? showPrice;
+  String? okei;
+  double? discount;
 
   Map<String, dynamic> toMap() {
     var map = <String, dynamic>{

lib/core/entity/Voucher.dart

@@ -17,16 +17,16 @@ const String VoucherTypeReport = 'report';
 const String VoucherTypeCloseDayPosReport = 'closeDayPosReport';
 
 class Voucher {
-  int id;
-  String name;
-  double total;
-  String data;
-  String base64Data;
-  DateTime dateTime;
-  int appCompanyId;
-  int kassaId;
-  String type;
-  String url;
+  int? id;
+  String? name;
+  double? total;
+  String? data;
+  String? base64Data;
+  DateTime? dateTime;
+  int? appCompanyId;
+  int? kassaId;
+  String? type;
+  String? url;
 
   Voucher();
 
@@ -36,7 +36,7 @@ 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,
@@ -48,7 +48,7 @@ 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/locator.dart

@@ -2,6 +2,7 @@
 
 import 'package:aman_kassa_flutter/core/services/BankService.dart';
 import 'package:aman_kassa_flutter/core/services/DataService.dart';
+import 'package:aman_kassa_flutter/core/services/blue_print_service.dart';
 
 import '../core/services/DbService.dart';
 
@@ -26,6 +27,8 @@ class LocatorInjector {
     locator.registerLazySingleton<DialogService>(() => DialogService());
     _log.d('Initializing DbService Service');
     locator.registerLazySingleton<DbService>(() => DbService.instance);
+    _log.d('Initializing BluePrintService Service');
+    locator.registerLazySingleton<BluePrintService>(() => BluePrintService());
 
 
     // depencies

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, 2);
+     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') ||
-        match.group(1).startsWith('dart-sdk/lib');
+    return match.group(1)!.startsWith('packages/logger') ||
+        match.group(1)!.startsWith('dart-sdk/lib');
   }
 }
 

lib/core/models/aman_dao.dart

@@ -1,8 +1,8 @@
 class AmanDao<T> {
-  final T data;
-  final dynamic rows;
-  final String msg;
-  final bool success;
+  final T? data;
+  final dynamic? rows;
+  final String? msg;
+  final bool? success;
 
   AmanDao({this.data, this.success, this.msg, this.rows});
 

lib/core/models/auth_response.dart

@@ -2,9 +2,9 @@ import '../utilsParse.dart';
 import 'user.dart';
 
 class AuthResponse {
-  final AuthBody body;
-  final int status;
-  final bool operation;  
+  final AuthBody? body;
+  final int? status;
+  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> password;
-  final String message;
-  final User user;
+  final List<String>? email;
+  final List<String>? password;
+  final String? message;
+  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/card_data.dart

@@ -1,15 +1,15 @@
 class CardData {
-  final int transactionNumber;
-  final int operationDay;
-  final int terminalId;
-  final String cardNumber;
-  final String cardholderName;
-  final String authorizationCode;
-  final String transactionType;
+  final int? transactionNumber;
+  final int? operationDay;
+  final int? terminalId;
+  final String? cardNumber;
+  final String? cardholderName;
+  final String? authorizationCode;
+  final String? transactionType;
 
   CardData({this.transactionNumber, this.operationDay, this.cardNumber, this.cardholderName,  this.authorizationCode, this.terminalId, this.transactionType });
 
-  static CardData fromJson(Map<String, dynamic> json) {
+  static CardData? fromJson(Map<String, dynamic>? json) {
     return json != null ?
     CardData(
       transactionNumber: json['transactionNumber'],

lib/core/models/check_data.dart

@@ -2,10 +2,10 @@ import 'package:aman_kassa_flutter/core/models/card_data.dart';
 import 'package:aman_kassa_flutter/core/models/check_item.dart';
 
 class CheckData {
-  final String type;
-  num card;
-  final List<CheckItem> items;
-  CardData cardData;
+  final String ?type;
+  num? card;
+  final List<CheckItem>? items;
+  CardData? cardData;
   CheckData({this.type, this.card, this.items, this.cardData});
 
   static CheckData fromJson(Map<String, dynamic> json) {
@@ -20,7 +20,7 @@ class CheckData {
       {
         'type': type,
         'card': card,
-        'items': items.map((e) => e.toJson()).toList(),
-        'cardData': cardData!=null ? cardData.toJson() : null
+        'items': items?.map((e) => e.toJson()).toList(),
+        'cardData': cardData?.toJson()
       };
 }

lib/core/models/check_image_modal.dart

@@ -1,6 +1,6 @@
 class CheckImageModal {
-  final String base64Data;
-  final String textData;
+  final String? base64Data;
+  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;
-  CheckItem({this.name, this.cnt, this.price, this.articul, this.excise});
+  final String? 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/close_day_data.dart

@@ -4,17 +4,17 @@ import 'package:aman_kassa_flutter/core/models/transaction_item.dart';
 import 'halyk/halyk_close_day_dao.dart';
 
 class CloseDayData {
-  final String title;
-  final num totalAmount;
-  final int totalCount;
-  final num paymentAmount;
-  final int paymentCount;
-  final num refundAmount;
-  final int refundCount;
-  final num cancelAmount;
-  final int cancelCount;
+  final String? title;
+  final num? totalAmount;
+  final int? totalCount;
+  final num? paymentAmount;
+  final int? paymentCount;
+  final num? refundAmount;
+  final int? refundCount;
+  final num? cancelAmount;
+  final int? cancelCount;
 
-  final List<TransactionBean> items;
+  final List<TransactionBean>? items;
   CloseDayData({
     this.title,
     this.items,
@@ -49,6 +49,6 @@ class CloseDayData {
         'refundCount': refundCount,
         'cancelAmount': cancelAmount,
         'cancelCount': cancelCount,
-        'items': items.map((e) => e.toJson()).toList(),
+        'items': items?.map((e) => e.toJson()).toList(),
       };
 }

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 formatType;
+  final String? cancelTitle;
+  final String? formatType;
 
   DialogRequest(
-      {@required this.title,
-      @required this.description,
-      @required this.buttonTitle,
+      {required this.title,
+      required this.description,
+      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/halyk/halyk_close_day_dao.dart

@@ -3,13 +3,13 @@
 /// closeDayResults : {"reconciliationResult":[{"hostResultCode":"000","hostResultDescription":"Success","terminalExternalId":"example_terminal_id"}]}
 
 class HalykCloseDayDao {
-  ResultBean result;
-  TransactionsBean transactions;
-  CloseDayResultsBean closeDayResults;
+  ResultBean? result;
+  TransactionsBean? transactions;
+  CloseDayResultsBean? closeDayResults;
 
   HalykCloseDayDao({ this.result, this.closeDayResults, this.transactions});
 
-  static HalykCloseDayDao fromMap(Map<String, dynamic> map) {
+  static HalykCloseDayDao? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     HalykCloseDayDao halykCloseDayDaoBean = HalykCloseDayDao();
     halykCloseDayDaoBean.result = ResultBean.fromMap(map['result']);
@@ -28,13 +28,13 @@ class HalykCloseDayDao {
 /// reconciliationResult : [{"hostResultCode":"000","hostResultDescription":"Success","terminalExternalId":"example_terminal_id"}]
 
 class CloseDayResultsBean {
-  List<ReconciliationResultBean> reconciliationResult;
+  List<ReconciliationResultBean>? reconciliationResult;
 
-  static CloseDayResultsBean fromMap(Map<String, dynamic> map) {
+  static CloseDayResultsBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     CloseDayResultsBean closeDayResultsBean = CloseDayResultsBean();
-    closeDayResultsBean.reconciliationResult = List()..addAll(
-      (map['reconciliationResult'] as List ?? []).map((o) => ReconciliationResultBean.fromMap(o))
+    closeDayResultsBean.reconciliationResult = List.empty()..addAll(
+      (map['reconciliationResult'] as List).map((o) => ReconciliationResultBean.fromMap(o))
     );
     return closeDayResultsBean;
   }
@@ -49,12 +49,11 @@ class CloseDayResultsBean {
 /// terminalExternalId : "example_terminal_id"
 
 class ReconciliationResultBean {
-  String hostResultCode;
-  String hostResultDescription;
-  String terminalExternalId;
+  String? hostResultCode;
+  String? hostResultDescription;
+  String? terminalExternalId;
 
   static ReconciliationResultBean fromMap(Map<String, dynamic> map) {
-    if (map == null) return null;
     ReconciliationResultBean reconciliationResultBean = ReconciliationResultBean();
     reconciliationResultBean.hostResultCode = map['hostResultCode'];
     reconciliationResultBean.hostResultDescription = map['hostResultDescription'];
@@ -72,13 +71,13 @@ class ReconciliationResultBean {
 /// transaction : [{"type":"PAYMENT","instrument":"CARD","amount":"6000","terminalId":"123321","operationDay":"4","transactionNumber":"69","instrumentSpecificData":{"authorizationCode":"000000","rrn":"1234567890","cardholderName":"IVAN IVANOV","maskedPan":"123456******7890"}},{"type":"REFUND","instrument":"CARD","amount":"4500","terminalId":"123321","operationDay":"4","transactionNumber":"70","instrumentSpecificData":{"authorizationCode":"000000","rrn":"1234567890","cardholderName":"IVAN IVANOV","maskedPan":"123456******7890"},"parentTransaction":{"terminalId":"123321","operationDay":"4","transactionNumber":"69"}}]
 
 class TransactionsBean {
-  List<TransactionBean> transaction;
+  List<TransactionBean>? transaction;
 
-  static TransactionsBean fromMap(Map<String, dynamic> map) {
+  static TransactionsBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     TransactionsBean transactionsBean = TransactionsBean();
-    transactionsBean.transaction = List()..addAll(
-      (map['transaction'] as List ?? []).map((o) => TransactionBean.fromMap(o))
+    transactionsBean.transaction = List.empty()..addAll(
+      (map['transaction'] as List).map((o) => TransactionBean.fromMap(o))
     );
     return transactionsBean;
   }
@@ -97,20 +96,19 @@ class TransactionsBean {
 /// instrumentSpecificData : {"authorizationCode":"000000","rrn":"1234567890","cardholderName":"IVAN IVANOV","maskedPan":"123456******7890"}
 
 class TransactionBean {
-  String type;
-  String instrument;
-  num amount;
-  int terminalId;
-  int operationDay;
-  int transactionNumber;
-  InstrumentSpecificDataBean instrumentSpecificData;
+  String? type;
+  String? instrument;
+  num amount = 0;
+  int? terminalId;
+  int? operationDay;
+  int? transactionNumber;
+  InstrumentSpecificDataBean? instrumentSpecificData;
 
   static TransactionBean fromMap(Map<String, dynamic> map) {
-    if (map == null) return null;
     TransactionBean transactionBean = TransactionBean();
     transactionBean.type = map['type'];
     transactionBean.instrument = map['instrument'];
-    transactionBean.amount = map['amount'];
+    transactionBean.amount = map['amount'] ?? 0;
     transactionBean.terminalId = map['terminalId'];
     transactionBean.operationDay = map['operationDay'];
     transactionBean.transactionNumber = map['transactionNumber'];
@@ -135,12 +133,12 @@ class TransactionBean {
 /// maskedPan : "123456******7890"
 
 class InstrumentSpecificDataBean {
-  String authorizationCode;
-  String rrn;
-  String cardholderName;
-  String maskedPan;
+  String? authorizationCode;
+  String? rrn;
+  String? cardholderName;
+  String? maskedPan;
 
-  static InstrumentSpecificDataBean fromMap(Map<String, dynamic> map) {
+  static InstrumentSpecificDataBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     InstrumentSpecificDataBean instrumentSpecificDataBean = InstrumentSpecificDataBean();
     instrumentSpecificDataBean.authorizationCode = map['authorizationCode'];
@@ -162,12 +160,12 @@ class InstrumentSpecificDataBean {
 /// description : "Successfully completed"
 
 class ResultBean {
-  int code;
-  String description;
+  int? code;
+  String? description;
 
   ResultBean({this.code, this.description});
 
-  static ResultBean fromMap(Map<String, dynamic> map) {
+  static ResultBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     ResultBean resultBean = ResultBean();
     resultBean.code = map['code'];

lib/core/models/halyk/halyk_post_session.dart

@@ -8,11 +8,11 @@ class HalykPosSession {
       this.tokenTimeout,
       this.result});
 
-  final String login;
-  final String token;
-  final DateTime serverTime;
-  final int tokenTimeout;
-  final ResultBean result;
+  final String? login;
+  final String? token;
+  final DateTime? serverTime;
+  final int? tokenTimeout;
+  final ResultBean? result;
 
   static HalykPosSession fromJson(Map<String, dynamic> data) => HalykPosSession(
       login: data['login'],
@@ -30,12 +30,12 @@ class HalykPosSession {
 /// Response : {"Code":"040","Description":"Unknown operator login. Check the correctness of the data or contact support."}
 
 class ResultBean {
-  String ServerTime;
-  String ResultCode;
-  String ResultStr;
-  ResponseBean Response;
+  String? ServerTime;
+  String? ResultCode;
+  String? ResultStr;
+  ResponseBean? Response;
 
-  static ResultBean fromMap(Map<String, dynamic> map) {
+  static ResultBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     ResultBean resultBean = ResultBean();
     resultBean.ServerTime = map['ServerTime'];
@@ -57,10 +57,10 @@ class ResultBean {
 /// Description : "Unknown operator login. Check the correctness of the data or contact support."
 
 class ResponseBean {
-  String Code;
-  String Description;
+  String? Code;
+  String? Description;
 
-  static ResponseBean fromMap(Map<String, dynamic> map) {
+  static ResponseBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     ResponseBean responseBean = ResponseBean();
     responseBean.Code = map['Code'];

lib/core/models/halyk/halyk_response_dao.dart

@@ -2,12 +2,12 @@
 /// transaction : {"terminalId":"123321","operationDay":"4","transactionNumber":"69","instrumentSpecificData":{"authorizationCode":"000000","rrn":"1234567890","cardholderName":"IVAN IVANOV","maskedPan":"123456******7890"}}
 
 class HalykResponse {
-  ResultBean result;
-  TransactionBean transaction;
+  ResultBean? result;
+  TransactionBean? transaction;
 
   HalykResponse({this.result, this.transaction});
 
-  static HalykResponse fromMap(Map<String, dynamic> map) {
+  static HalykResponse? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     HalykResponse halykResponseBean = HalykResponse();
     halykResponseBean.result = ResultBean.fromMap(map['result']);
@@ -28,12 +28,12 @@ class HalykResponse {
 /// instrumentSpecificData : {"authorizationCode":"000000","rrn":"1234567890","cardholderName":"IVAN IVANOV","maskedPan":"123456******7890"}
 
 class TransactionBean {
-  int terminalId;
-  int operationDay;
-  int transactionNumber;
-  InstrumentSpecificDataBean instrumentSpecificData;
+  int? terminalId;
+  int? operationDay;
+  int? transactionNumber;
+  InstrumentSpecificDataBean? instrumentSpecificData;
 
-  static TransactionBean fromMap(Map<String, dynamic> map) {
+  static TransactionBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     TransactionBean transactionBean = TransactionBean();
     transactionBean.terminalId = map['terminalId'];
@@ -58,12 +58,12 @@ class TransactionBean {
 /// maskedPan : "123456******7890"
 
 class InstrumentSpecificDataBean {
-  String authorizationCode;
-  String rrn;
-  String cardholderName;
-  String maskedPan;
+  String? authorizationCode;
+  String? rrn;
+  String? cardholderName;
+  String? maskedPan;
 
-  static InstrumentSpecificDataBean fromMap(Map<String, dynamic> map) {
+  static InstrumentSpecificDataBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     InstrumentSpecificDataBean instrumentSpecificDataBean = InstrumentSpecificDataBean();
     instrumentSpecificDataBean.authorizationCode = map['authorizationCode'];
@@ -87,14 +87,14 @@ class InstrumentSpecificDataBean {
 /// hostResponse : {"code":"0","description":"Successfully completed"}
 
 class ResultBean {
-  int code;
-  String description;
-  HostResponseBean hostResponse;
-  ErrorResponseBean errorData;
+  int? code;
+  String? description;
+  HostResponseBean? hostResponse;
+  ErrorResponseBean? errorData;
 
   ResultBean({this.code, this.description});
 
-  static ResultBean fromMap(Map<String, dynamic> map) {
+  static ResultBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     ResultBean resultBean = ResultBean();
     resultBean.code = map['code'];
@@ -117,10 +117,10 @@ class ResultBean {
 /// description : "Successfully completed"
 
 class HostResponseBean {
-  String code;
-  String description;
+  String? code;
+  String? description;
 
-  static HostResponseBean fromMap(Map<String, dynamic> map) {
+  static HostResponseBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     HostResponseBean hostResponseBean = HostResponseBean();
     hostResponseBean.code = map['code'];
@@ -136,10 +136,10 @@ class HostResponseBean {
 }
 
 class ErrorResponseBean {
-  int code;
-  String description;
+  int? code;
+  String? description;
 
-  static ErrorResponseBean fromMap(Map<String, dynamic> map) {
+  static ErrorResponseBean? fromMap(Map<String, dynamic>? map) {
     if (map == null) return null;
     ErrorResponseBean errorResponseBean  = ErrorResponseBean();
     errorResponseBean.code = map['code'];

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 Service service;
-  final String excise;
+  final Good? good;
+  final Service? service;
+  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 name;
-  final String address;
+  final String? type;
+  final String? name;
+  final String? address;
 }

lib/core/models/smena.dart

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

lib/core/models/transaction_item.dart

@@ -1,10 +1,10 @@
 class TransactionItem {
-  final String cardType;
-  final String cardExpireDate;
-  final String cardNumber;
-  final String transactionType;
-  final num amount;
-  final DateTime date;
+  final String? cardType;
+  final String? cardExpireDate;
+  final String? cardNumber;
+  final String? transactionType;
+  final num? amount;
+  final DateTime? date;
   TransactionItem({this.cardType, this.cardExpireDate, this.cardNumber, this.transactionType, this.amount, this.date});
 
   static TransactionItem fromJson(Map<String, dynamic> json) {

lib/core/models/user.dart

@@ -1,23 +1,23 @@
 class User {
 
-  final String name;
-  final String email;
-  final String fullName;
-  final String token;
-  int appCompanyId;
-  int kassaId;
+  final String? name;
+  final String? email;
+  final String? fullName;
+  final String? token;
+  int? appCompanyId;
+  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'],
       email: json['mail'],
       token: json['api_token'],
       fullName: json['fullname'],
-      appCompanyId:  json['app_company_id'] as int,
-      kassaId:  json['kassa_id'] as int,
+      appCompanyId:  json['app_company_id'] ,
+      kassaId:  json['kassa_id'] ,
     )
     : null;
   }

lib/core/router.dart

@@ -24,90 +24,88 @@ Route<dynamic> generateRoute(RouteSettings settings) {
     case LoginViewRoute:
       LoginModel model = settings.arguments as LoginModel;
       return _getPageRoute(
-        routeName: settings.name,
-        viewToShow: LoginView(
-          loginModel: model,
-        ),
+        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 PaymentNfcViewRoute:
     PaymentModel model = settings.arguments as PaymentModel;
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: PaymentNfcView(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 BankViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: BankView(),
       );
     case BankSettingViewRoute:
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: BankSettingView(),
       );
     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(),
       );
     case CloseDayShowRoute:
       CloseDayData data = settings.arguments as CloseDayData;
       return _getPageRoute(
-        routeName: settings.name,
+        routeName: settings.name!,
         viewToShow: CloseDayShowContainer(data),
       );
     default:
@@ -119,7 +117,7 @@ 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,
@@ -129,7 +127,7 @@ 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

@@ -43,7 +43,7 @@ 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 {
@@ -52,7 +52,7 @@ 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 {
@@ -73,8 +73,8 @@ class ApiService extends BaseService {
     print(hash);
 
     Map<String, String> requestBody = <String, String>{'login': login, 'hash': hash};
-    //var response = await requestFormData('/halykpos/gettoken', requestBody, bodyEntry: true, posEndPoint: true, statusCheck: false);
-    var response = await requestFormData('/hb/pos/gettoken', requestBody, bodyEntry: true, posEndPoint: true, statusCheck: false);
+    String pointUrl = test ? '/hb/pos/gettoken' : '/halykpos/gettoken';
+    var response = await requestFormData(pointUrl, requestBody, bodyEntry: true, posEndPoint: true, statusCheck: false);
     print(response);
     return HalykPosSession.fromJson(jsonDecode(response));
   }
@@ -140,7 +140,7 @@ class ApiService extends BaseService {
   }
 
 
-  Future<String> requestFormData(String point, Map<String, dynamic> requestBody, { bool statusCheck = true, bool bodyEntry = false, bool posEndPoint= false } ) async {
+  Future<String> requestFormData(String point, Map<String, String> requestBody, { bool statusCheck = true, bool bodyEntry = false, bool posEndPoint= false } ) async {
     DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
 
 
@@ -197,7 +197,7 @@ 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/BankService.dart

@@ -28,11 +28,11 @@ class BankService extends BaseService {
       result = '0';
     }
     log.i(result);
-    return int.parse(result) ?? 0;
+    return int.parse(result);
   }
 
-  Future<Ps.HalykPosSession> renewToken({String token, String login, String password}) async {
-    Ps.HalykPosSession result;
+  Future<Ps.HalykPosSession?> renewToken({required String token, required String login, required String password}) async {
+    Ps.HalykPosSession? result;
     try {
       result  = await _api.halykPosToken(token, login, password);
     } catch (e, stack) {
@@ -43,11 +43,11 @@ class BankService extends BaseService {
 
 
 
-  Future<Cd.HalykCloseDayDao> closeDay({ String token}) async {
+  Future<Cd.HalykCloseDayDao?> closeDay({ required String token}) async {
     try {
       String response = await _channel.invokeMethod("closeDay", <String, dynamic>{'token': token });
       log.i(response);
-      Cd.HalykCloseDayDao dao = Cd.HalykCloseDayDao.fromMap(json.decode(response));
+      Cd.HalykCloseDayDao dao = Cd.HalykCloseDayDao.fromMap(json.decode(response))!;
       return dao;
     } catch (e, stack) {
       log.e("BankService", e, stack);
@@ -55,14 +55,14 @@ class BankService extends BaseService {
     }
   }
 
-  Future<HalykResponse> pay({double amount, String token}) async {
+  Future<HalykResponse> pay({required double amount, required String token}) async {
     try {
 
       double total = amount * 100;
       log.i('total: $total, ${total.toInt()}');
       String response = await _channel.invokeMethod("pay", <String, dynamic>{'amount': total.toInt(), 'token': token });
       log.i(response);
-      HalykResponse dao = HalykResponse.fromMap(json.decode(response));
+      HalykResponse dao = HalykResponse.fromMap(json.decode(response))!;
       return dao;
     } catch (e, stack) {
       log.e("BankService", e, stack);
@@ -70,12 +70,12 @@ class BankService extends BaseService {
     }
   }
 
-  Future<HalykResponse> refund({double amount, String token, int terminalId, int operDay, int transNum }) async {
+  Future<HalykResponse> refund({required double amount, required String token, required int terminalId, required int operDay, required int transNum }) async {
     try {
       String response = await _channel.invokeMethod("refund", <String, dynamic>{
         'amount': amount.toInt(), 'token': token , 'terminalId': terminalId, 'operDay': operDay, 'transNum': transNum
       });
-      HalykResponse dao = HalykResponse.fromMap(json.decode(response));
+      HalykResponse dao = HalykResponse.fromMap(json.decode(response))!;
       return dao;
     } catch (e, stack) {
       log.e("BankService", e, stack);
@@ -83,13 +83,13 @@ class BankService extends BaseService {
     }
   }
 
-  Future<HalykResponse> reversal({ String token, int terminalId, int operDay, int transNum }) async {
+  Future<HalykResponse> reversal({ required String token, required int terminalId, required int operDay, required int transNum }) async {
     try {
       String response = await _channel.invokeMethod("reversal", <String, dynamic>{
          'token': token , 'terminalId': terminalId, 'operDay': operDay, 'transNum': transNum
       });
       log.i(response);
-      HalykResponse dao = HalykResponse.fromMap(json.decode(response));
+      HalykResponse dao = HalykResponse.fromMap(json.decode(response))!;
       return dao;
     } catch (e, stack) {
       log.e("BankService", e, stack);
@@ -102,7 +102,7 @@ class BankService extends BaseService {
     final DateFormat formatter = DateFormat('dd.MM.yyyy');
     final DateTime now = DateTime.now();
     final String formatted = formatter.format(now);
-    List<Cd.TransactionBean> items = transactions.transaction;
+    List<Cd.TransactionBean> items = transactions.transaction!;
     num totalAmount = 0;
     int totalCount = 0;
     num paymentAmount = 0;

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';
@@ -26,7 +27,8 @@ 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();
@@ -37,35 +39,38 @@ 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 {
-    List<Map<String, dynamic>> list = await _db.queryRowsWithWhere(Goog_tableName, ' $Goog_columnEan = ?', [barcode]);
+  Future<List<Good>> getGoodsByBarcode({required String barcode}) async {
+    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',
-          cnt: el.count,
-          price: el.price,
-          articul: articul,
-          excise: el.excise,
+        name: el.name,
+        cnt: el.count,
+        price: el.price,
+        articul: articul,
+        excise: el.excise,
       ));
       summ += el.total;
       iterator++;
@@ -78,7 +83,9 @@ 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;
@@ -86,7 +93,7 @@ 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);
 
@@ -112,13 +119,13 @@ class DataService extends BaseService {
          *  type
          */
   Future<void> insertVoucher(
-      {@required User user,
-      String data,
-      String base64Data,
-      @required String name,
+      {required User user,
+      String? data,
+      String? base64Data,
+      required String name,
       double total = 0.0,
       String type = VoucherTypePayment,
-      String url}) {
+      String? url}) async {
     assert(user != null);
     assert(name != null);
     Voucher voucher = Voucher()
@@ -134,14 +141,13 @@ 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>> refundM4Bank(
+  Future<Response<dynamic>?> refundM4Bank(
       {
-        String token,
-        CheckData checkData,
-        CardData cardData}) async {
+        required String token,
+        required CheckData checkData,
+        required CardData cardData}) async {
     try {
       var json  = cardData.toJson();
       json['transactionType'] = VoucherTypeReturnPay;
@@ -154,10 +160,10 @@ 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;
-        String check = response?.body['check'];
-        dynamic journal = response?.body['journal'];
-        String url = response?.body['link'];
+        User user = Redux.store!.state.userState!.user!;
+        String check = response.body['check'];
+        dynamic journal = response.body['journal'];
+        String url = response.body['link'];
         int checkNum = journal['check_num'];
         var summ = journal['summ'];
         double total = summ != null ? double.parse(summ.toString()) : 0.0;
@@ -177,17 +183,17 @@ class DataService extends BaseService {
     return null;
   }
 
-  Future<Response<dynamic>> sellOrReturn(
-      {String paymentType,
-      String tradeType,
-      String token,
-      List<ProductDao> kassaItems,
-      List<CalcModel> calcItems,
-      String operationType,
-      String mode,
-      CardData cardData}) async {
+  Future<Response<dynamic>?> sellOrReturn(
+      {String? paymentType,
+      String? tradeType,
+      required String token,
+        required List<ProductDao> kassaItems,
+        required List<CalcModel> calcItems,
+      required String operationType,
+      required String mode,
+        required CardData? cardData}) async {
     try {
-      String data;
+      String data = "";
       if (mode == SettingModeKassa) {
         CheckData checkData = _transformProductsToCheckData(
             paymentType: paymentType, tradeType: tradeType, items: kassaItems);
@@ -208,18 +214,20 @@ 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'];
-        var checkText = response?.body['check_text'];
-        CheckImageModal imageModal = new CheckImageModal( base64Data: check, textData: checkText !=null ? jsonEncode(checkText) : null );
+        String check = response.body['check'];
+        var checkText = response.body['check_text'];
+        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;
 
@@ -243,9 +251,9 @@ 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 {
@@ -259,9 +267,10 @@ 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;
       }
@@ -272,7 +281,6 @@ 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 get currentUser => _currentUser;
+  User? _currentUser;
+  User? get currentUser => _currentUser;
 
-  Future<AuthBody> loginWithEmail({
-    @required String email,
-    @required String password,
+  Future<AuthBody?> loginWithEmail({
+    required String email,
+    required String password,
   }) async {
     try {
-      AuthBody result = await _api.authenticate(email, password);
-      if (result.user != null) {
+      AuthBody? result = await _api.authenticate(email, password);
+      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/blue_print_service.dart

@@ -0,0 +1,173 @@
+import 'dart:io';
+import 'dart:typed_data';
+
+import 'package:aman_kassa_flutter/core/base/base_service.dart';
+import 'package:bluetooth_print/bluetooth_print.dart';
+import 'package:bluetooth_print/bluetooth_print_model.dart';
+import 'package:flutter_blue/flutter_blue.dart' as flutter_blue;
+import 'package:flutter_blue/gen/flutterblue.pb.dart' as proto;
+
+class BluePrintService extends BaseService {
+  final BluetoothPrint _bluetoothAndr = BluetoothPrint.instance;
+  flutter_blue.BluetoothDevice? _bluetoothDeviceIOS;
+  final flutter_blue.FlutterBlue _bluetoothIOS =
+      flutter_blue.FlutterBlue.instance;
+
+  final bool isAndroid = Platform.isAndroid;
+  final bool isIos = Platform.isIOS;
+  // final bool isAndroid = false;
+  // final bool isIos = true;
+
+  BluetoothDevice? _device;
+
+  Future<void> scan() async {
+    if (isAndroid) {
+      await _bluetoothAndr.startScan(timeout: Duration(seconds: 4));
+    } else if (isIos) {
+      await _bluetoothIOS.startScan(timeout: const Duration(seconds: 5));
+    }
+  }
+
+  Future<void> stopScan() async {
+    if (isAndroid) {
+      await _bluetoothAndr.stopScan();
+    } else if (isIos) {
+      await _bluetoothIOS.stopScan();
+    }
+  }
+
+  Stream<List<BluetoothDevice>> get scanResult {
+    if (isAndroid)
+      return _bluetoothAndr.scanResults;
+    else
+      return _bluetoothIOS.scanResults.asyncMap<List<BluetoothDevice>>(
+          (event) =>
+              Future.wait(event.toList().map((e) async => BluetoothDevice()
+                ..name = e.device.name
+                ..type = e.device.type.index
+                ..address = e.device.id.id)));
+  }
+
+  Stream<bool> get isScanning =>
+      isAndroid ? _bluetoothAndr.isScanning : _bluetoothIOS.isScanning;
+
+  Stream<int> get state => isAndroid
+      ? _bluetoothAndr.state
+      : _bluetoothIOS.state.asyncMap<int>((event) => event.index);
+
+  set device(BluetoothDevice device) => _device = device;
+
+  Future<bool> connect() async {
+    bool response = false;
+    if (_device == null) {
+      response = false;
+    } else {
+      // try {
+      //   await _bluetoothAndr.connect(_device!);
+      //   await Future.delayed(Duration(seconds: 5));
+      //   response = true;
+      // } catch (e) {
+      //   print('Error connect $e');
+      //   response = false;
+      // }
+
+      try {
+        if (isAndroid) {
+          await _bluetoothAndr.connect(_device!);
+        } else if (isIos) {
+          _bluetoothDeviceIOS = flutter_blue.BluetoothDevice.fromProto(
+            proto.BluetoothDevice(
+              name: _device?.name ?? '',
+              remoteId: _device?.address ?? '',
+              type: proto.BluetoothDevice_Type.valueOf(_device?.type ?? 0),
+            ),
+          );
+          final List<flutter_blue.BluetoothDevice> connectedDevices =
+              await _bluetoothIOS.connectedDevices;
+          final int deviceConnectedIndex = connectedDevices
+              .indexWhere((flutter_blue.BluetoothDevice bluetoothDevice) {
+            return bluetoothDevice.id == _bluetoothDeviceIOS?.id;
+          });
+          if (deviceConnectedIndex < 0) {
+            await _bluetoothDeviceIOS?.connect();
+          }
+        }
+
+        response = true;
+        _device?.connected = true;
+        return Future<bool>.value(response);
+      } on Exception catch (error) {
+        print('$runtimeType - Error $error');
+        response = false;
+        _device?.connected = false;
+        return Future<bool>.value(response);
+      }
+    }
+    return response;
+  }
+
+  Future<bool> disconnect() async {
+    bool response = false;
+    try {
+      if (isAndroid) {
+        await _bluetoothAndr.disconnect();
+      } else if (isIos) {
+        await _bluetoothDeviceIOS?.disconnect();
+      }
+
+      print('disconnected');
+      response = true;
+    } catch (e) {
+      print('Error $e');
+      response = false;
+    }
+    return response;
+  }
+
+  Future<bool> printBytes(Uint8List bytes,
+      {int chunkSizeBytes = 20, int queueSleepTimeMs = 20}) async {
+    Map<String, dynamic> config = Map();
+    final len = bytes.length;
+    List<List<int>> chunks = [];
+    for (var i = 0; i < len; i += chunkSizeBytes) {
+      var end = (i + chunkSizeBytes < len) ? i + chunkSizeBytes : len;
+      chunks.add(bytes.sublist(i, end));
+    }
+
+    for (var i = 0; i < chunks.length; i += 1) {
+      if (isAndroid) {
+        await _printAndroid(chunks[i], config);
+      } else if (isIos) {
+        await _printIos(Uint8List.fromList(chunks[i]), config);
+      }
+
+      await Future.delayed(Duration(milliseconds: queueSleepTimeMs));
+    }
+
+
+
+    return true;
+  }
+
+  Future<void> _printIos(Uint8List bytes,Map<String, dynamic> config) async {
+    final List<flutter_blue.BluetoothService> bluetoothServices =
+        await _bluetoothDeviceIOS?.discoverServices() ??
+            <flutter_blue.BluetoothService>[];
+    final flutter_blue.BluetoothService bluetoothService =
+        bluetoothServices.firstWhere(
+      (flutter_blue.BluetoothService service) => service.isPrimary,
+    );
+    final flutter_blue.BluetoothCharacteristic characteristic =
+        bluetoothService.characteristics.firstWhere(
+      (flutter_blue.BluetoothCharacteristic bluetoothCharacteristic) =>
+          bluetoothCharacteristic.properties.write,
+    );
+    await characteristic.write(bytes, withoutResponse: true);
+  }
+
+  Future<void> _printAndroid(List<int> chunk ,Map<String, dynamic> config) async {
+
+
+    await _bluetoothAndr.rawBytes(config, chunk);
+  }
+}

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) _showDialogInputListener;
-  Completer<DialogResponse> _dialogCompleter;
+  Function(DialogRequest)? _showDialogListener;
+  Function(DialogRequest)? _showDialogInputListener;
+  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,
-      String description,
+      {required String title,
+        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();
-    _dialogCompleter.complete(response);
+    _dialogNavigationKey.currentState!.pop();
+    _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

@@ -7,8 +7,8 @@ import 'package:flutter_redux/flutter_redux.dart';
 import 'package:aman_kassa_flutter/shared/app_colors.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
-import 'package:flutter_screenutil/screenutil_init.dart';
 import 'package:google_fonts/google_fonts.dart';
+
 //service & tools
 import 'package:aman_kassa_flutter/redux/store.dart';
 import 'core/locator.dart';
@@ -16,10 +16,10 @@ 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 {
   HttpOverrides.global = MyHttpOverrides();
@@ -38,25 +38,35 @@ void main() async {
   runApp(MainApplication());
 }
 
-class MainApplication extends StatelessWidget {
+class MyHttpOverrides extends HttpOverrides {
+  @override
+  HttpClient createHttpClient(SecurityContext? context) {
+    return super.createHttpClient(context)
+      ..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: ScreenUtilInit(
-          designSize: Size(411.43, 683.43),
-          allowFontScaling: false,
+          designSize: const Size(
+            411.43,
+            683.43,
+          ),
           builder: () => MaterialApp(
             theme: ThemeData(
               backgroundColor: backgroundColor,
               primaryColor: primaryColor,
               accentColor: yellowColor,
               scaffoldBackgroundColor: Colors.white,
-                textTheme: GoogleFonts.latoTextTheme(
-                  Theme.of(context).textTheme,
-                )
+              // textTheme: GoogleFonts.latoTextTheme(
+              //   Theme.of(context).textTheme,
+              // )
             ),
             debugShowCheckedModeBanner: false,
             builder: (context, child) => Navigator(
@@ -65,18 +75,10 @@ class MainApplication extends StatelessWidget {
                   builder: (context) => DialogManager(child: child)),
             ),
             navigatorKey: locator<NavigatorService>().navigatorKey,
-            home: StartUpView(), // first page
+            home: StartUpView(),
+            // first page
             onGenerateRoute: generateRoute,
           ),
-        ),
-      );
+        ));
   }
 }
-
-class MyHttpOverrides extends HttpOverrides{
-  @override
-  HttpClient createHttpClient(SecurityContext context){
-    return super.createHttpClient(context)
-      ..badCertificateCallback = (X509Certificate cert, String host, int port)=> true;
-  }
-}

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;
-  DictDao last = prevCategories.removeLast();
+  List<DictDao>? prevCategories = store.state.kassaState!.prevCategories;
+  DictDao? last = prevCategories?.removeLast() ;
   if (last != null) {
     store.dispatch(SetKassaStateAction(KassaState(prevCategories: prevCategories)));
     store.dispatch(selectBottomElement(last.id));
@@ -36,18 +36,18 @@ Future<void> cleanKassaItems(Store<AppState> store) async {
   store.dispatch(SetKassaStateAction(KassaState(kassaItems: [])));
 }
 
-ThunkAction<AppState> addCustomProductToKassaItems(String name, int count, double price, double total) {
+ThunkAction<AppState> addCustomProductToKassaItems(String name, double 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/setting_actions.dart

@@ -1,9 +1,9 @@
 import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
 import 'package:aman_kassa_flutter/redux/state/setting_state.dart';
+import 'package:bluetooth_print/bluetooth_print_model.dart';
 import 'package:meta/meta.dart';
 import 'package:redux/redux.dart';
 import 'package:redux_thunk/redux_thunk.dart';
-import 'package:flutter_bluetooth_basic/src/bluetooth_device.dart';
 import '../store.dart';
 
 @immutable

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;
-    String token = user?.token;
+    User? user = store.state.userState?.user;
+    String? token = user?.token;
     bool isAuthenticated = false;
-    if (token != null) {
-      if(user.email!=null && user.email.toLowerCase().trim().startsWith('test')){
+    if (token != null && user !=null) {
+      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/bank_state.dart

@@ -5,18 +5,20 @@ import 'package:meta/meta.dart';
 
 @immutable
 class BankState {
-  final String login;
-  final String password;
-  final HalykPosSession session;
+  final String? login;
+  final String? password;
+  final HalykPosSession? session;
+  final bool? loading;
 
-  BankState({this.login, this.password, this.session,});
+  BankState({this.login, this.password, this.session,this.loading});
 
   //read hive
-  factory BankState.initial(BankState payload) {
+  factory BankState.initial(BankState? payload) {
     return BankState(
         login: payload?.login,
         password: payload?.password,
-        session: payload?.session
+        session: payload?.session,
+        loading: payload?.loading
     );
   }
 
@@ -25,15 +27,17 @@ class BankState {
     @required login,
     @required password,
     @required session,
+    @required loading,
   }) {
     return BankState(
       login: login ?? this.login,
       password: password ?? this.password,
-      session: session ?? this.session
+      session: session ?? this.session,
+      loading: loading ?? this.loading
     );
   }
 
-  static BankState fromJson(dynamic json) {
+  static BankState? fromJson(dynamic json) {
     return json != null
         ? BankState(
       password: json['password'],

lib/redux/state/calc_state.dart

@@ -3,8 +3,8 @@ import 'package:meta/meta.dart';
 
 @immutable
 class CalcState {
-  final List<CalcModel> calcItems;
-  final bool isEqual;
+  final List<CalcModel>? calcItems;
+  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 bool bottomSheetLoading;
-  final List<DictDao> prevCategories;
-  final List<ProductDao> kassaItems;
+  final List? bottomSheetElements;
+  final bool? bottomSheetLoading;
+  final List<DictDao>? prevCategories;
+  final List<ProductDao>? kassaItems;
 
 
   KassaState(

lib/redux/state/setting_state.dart

@@ -1,17 +1,17 @@
 import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
+import 'package:bluetooth_print/bluetooth_print_model.dart';
 import 'package:meta/meta.dart';
-import 'package:flutter_bluetooth_basic/src/bluetooth_device.dart';
 
 @immutable
 class SettingState {
-  final String mode;
-  final String tradeType;
-  final String pinCode;
-  final bool pinLocked;
-  final bool pinSkip;
-  final BluetoothDevice printerBT;
-  final String printerEncoding;
-  final String printerPaperSize;
+  final String? mode;
+  final String? tradeType;
+  final String? pinCode;
+  final bool? pinLocked;
+  final bool? pinSkip;
+  final BluetoothDevice? printerBT;
+  final String? printerEncoding;
+  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 isLoading;
-  final bool isAuthenticated;
-  final String authenticateType;
-  final String login;
-  final String password;
-  final LoginFormMessage loginFormMessage;
-  final User user;
-  final Smena smena;
-  final Money money;
+  final bool? isError;
+  final bool? isLoading;
+  final bool? isAuthenticated;
+  final String? authenticateType;
+  final String? login;
+  final String? password;
+  final LoginFormMessage? loginFormMessage;
+  final User? user;
+  final Smena? smena;
+  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 isLoading,
-    @required User user,
-    @required bool isAuthenticated,
-    @required LoginFormMessage loginFormMessage,
-    @required Smena smena,
-    @required String authenticateType,
-    @required String login,
-    @required String password,
-    @required Money money,
+    @required bool? isError,
+    @required bool? isLoading,
+    @required User? user,
+    @required bool? isAuthenticated,
+    @required LoginFormMessage? loginFormMessage,
+    @required Smena? smena,
+    @required String? authenticateType,
+    @required String? login,
+    @required String? password,
+    @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 password;
-  final String message;
+  final String? email;
+  final String? password;
+  final String? message;
 
   LoginFormMessage({this.email, this.password, this.message});
 }

lib/redux/store.dart

@@ -11,6 +11,7 @@ import 'package:aman_kassa_flutter/redux/state/calc_state.dart';
 import 'package:aman_kassa_flutter/redux/state/kassa_state.dart';
 import 'package:aman_kassa_flutter/redux/state/setting_state.dart';
 import 'package:aman_kassa_flutter/redux/state/user_state.dart';
+import 'package:aman_kassa_flutter/views/payment/halyk_pos_service.dart';
 import 'package:meta/meta.dart';
 import 'package:redux/redux.dart';
 import 'package:redux_persist_flutter/redux_persist_flutter.dart';
@@ -24,23 +25,23 @@ 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);
   } else if (action is SetBankStateAction) {
     /** BankAction **/
-    final nextBankState = bankReducer(state.bankState, action);
+    final nextBankState = bankReducer(state.bankState!, action);
     return state.copyWith(bankState: nextBankState);
   }
   return state;
@@ -49,11 +50,11 @@ AppState appReducer(AppState state, dynamic action) {
 //Main  State
 @immutable
 class AppState {
-  final UserState userState;
-  final KassaState kassaState;
-  final SettingState settingState;
-  final CalcState calcState;
-  final BankState bankState;
+  final UserState? userState;
+  final KassaState? kassaState;
+  final SettingState? settingState;
+  final CalcState? calcState;
+  final BankState? bankState;
 
   AppState({
     this.userState,
@@ -65,11 +66,11 @@ class AppState {
 
   //stable work
   AppState copyWith({
-    UserState userState,
-    KassaState kassaState,
-    SettingState settingState,
-    CalcState calcState,
-    BankState bankState,
+    UserState? userState,
+    KassaState? kassaState,
+    SettingState? settingState,
+    CalcState? calcState,
+    BankState? bankState,
   }) {
     return AppState(
       userState: userState ?? this.userState,
@@ -80,8 +81,8 @@ class AppState {
     );
   }
 
-  static AppState fromJson(dynamic json) {
-    return json != null
+  static AppState? fromJson(dynamic json){
+    return json !=null
         ? AppState(
             settingState: SettingState.fromJson(json['settingState']),
             userState: UserState.fromJson(json['userState']),
@@ -92,17 +93,17 @@ class AppState {
 
   dynamic toJson() {
     return {
-      "settingState": settingState.toJson(),
-      "userState": userState.toJson(),
-      "bankState": bankState.toJson(),
+      "settingState": settingState?.toJson(),
+      "userState": userState?.toJson(),
+      "bankState": bankState?.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 {
@@ -119,7 +120,12 @@ class Redux {
           AppState.fromJson), // Or use other serializers
     );
 
-    final initialState = await persist.load();
+    AppState? initialState;
+    try {
+      initialState = await persist.load();
+    } catch (e, stack) {
+      log.e('message', e, stack);
+    }
 
     final userStateInitial = UserState.initial(initialState?.userState);
     final kassaStateInitial = KassaState.initial();

lib/views/bank_setting/bank_setting_view.dart

@@ -20,15 +20,15 @@ class BankSettingView extends StatefulWidget {
 }
 
 class _BankSettingViewState extends State<BankSettingView> {
-  TextEditingController _emailController;
-  TextEditingController _passwordController;
+  late TextEditingController _emailController;
+  late TextEditingController _passwordController;
   final BankService _bankService = locator<BankService>();
   final DialogService _dialogService = locator<DialogService>();
 
   @override
   void initState() {
     super.initState();
-    BankState state = Redux.store.state.bankState;
+    BankState state = Redux.store!.state.bankState!;
     _emailController = new TextEditingController(text: state.login);
     _passwordController = new TextEditingController(text: state.password);
     //permissions();
@@ -52,7 +52,7 @@ class _BankSettingViewState extends State<BankSettingView> {
 
   void _saveData(BuildContext _context) async {
     FocusScope.of(_context).unfocus();
-    await Redux.store.dispatch(saveData(_emailController.text, _passwordController.text));
+    await Redux.store!.dispatch(saveData(_emailController.text, _passwordController.text));
     _dialogService.showDialog(description: 'Данные сохранены');
   }
 

lib/views/bank_view/bank_view.dart

@@ -16,17 +16,17 @@ class _BankViewState extends State<BankView> {
       MethodChannel('channel:com.amanKassa/bank');
   static const MethodChannel _activity =
       MethodChannel('channel:com.amanKassa/activity');
-  String initValue;
-  String connectionValue;
-  String authValue;
-  String payValue;
-  String cancelValue;
-  String shutdownValue;
-  String versionValue;
-  String transactionValue;
-  String closeDayValue;
-  String getValue;
-  String errorValue;
+  String? initValue;
+  String? connectionValue;
+  String? authValue;
+  String? payValue;
+  String? cancelValue;
+  String? shutdownValue;
+  String? versionValue;
+  String? transactionValue;
+  String? closeDayValue;
+  String? getValue;
+  String? errorValue;
   bool loading = false;
 
   @override
@@ -40,21 +40,21 @@ class _BankViewState extends State<BankView> {
       'serverUrl': 'http://195.200.74.83:5000',
     });
     setState(() {
-      initValue = result ?? 'none';
+      initValue = result;
     });
   }
 
   version() async {
     String result = await _channel.invokeMethod('version');
     setState(() {
-      versionValue = result ?? 'none';
+      versionValue = result;
     });
   }
 
   transaction() async {
     String result = await _channel.invokeMethod('transaction');
     setState(() {
-      transactionValue = result ?? 'none';
+      transactionValue = result ;
     });
   }
 

lib/views/check/image_show_container.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 import 'dart:io';
 import 'package:aman_kassa_flutter/core/entity/Voucher.dart';
+import 'dart:typed_data';
 import 'package:aman_kassa_flutter/core/locator.dart';
 import 'package:aman_kassa_flutter/core/models/check_data.dart';
 import 'package:aman_kassa_flutter/core/models/check_image_modal.dart';
@@ -11,6 +12,7 @@ import 'package:aman_kassa_flutter/core/models/response.dart';
 import 'package:aman_kassa_flutter/core/route_names.dart';
 import 'package:aman_kassa_flutter/core/services/BankService.dart';
 import 'package:aman_kassa_flutter/core/services/DataService.dart';
+import 'package:aman_kassa_flutter/core/services/blue_print_service.dart';
 import 'package:aman_kassa_flutter/core/services/dialog_service.dart';
 import 'package:aman_kassa_flutter/core/services/navigator_service.dart';
 import 'package:aman_kassa_flutter/redux/actions/setting_actions.dart';
@@ -24,13 +26,12 @@ import 'package:aman_kassa_flutter/views/settings/printer/PrinterTest.dart';
 import 'package:aman_kassa_flutter/views/payment/halyk_pos_service.dart';
 import 'package:aman_kassa_flutter/widgets/fields/busy_button_icon.dart';
 import 'package:aman_kassa_flutter/widgets/loader/Dialogs.dart';
-import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
+import 'package:bluetooth_print/bluetooth_print_model.dart';
 import 'package:esc_pos_utils/esc_pos_utils.dart';
 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';
 
 import '../../core/models/aman_dao.dart';
@@ -45,19 +46,18 @@ class ImageShowContainer extends StatefulWidget {
 }
 
 class _ImageShowContainerState extends State<ImageShowContainer> {
-  final PrinterBluetoothManager printerManager = PrinterBluetoothManager();
+  final BluePrintService printerManager = locator<BluePrintService>();
   final DialogService _dialogService = locator<DialogService>();
-
-  final BluetoothDevice printerBtDevice = Redux.store.state.settingState.printerBT;
-  final BluetoothManager bluetoothManager = BluetoothManager.instance;
+  final BluetoothDevice? printerBtDevice =
+      Redux.store!.state.settingState!.printerBT;
 
   bool _printing = false;
 
   void _preparePrint() async {
     if (Platform.isIOS) {
-      await _print();
+      _print();
     } else {
-      bluetoothManager.state.listen((val) {
+      printerManager.state.listen((val) {
         print("state = $val");
         if (!mounted) return;
         if (val == 12) {
@@ -65,17 +65,31 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
           _print();
         } else if (val == 10) {
           print('off');
-          _dialogService.showDialog(description: 'Отсутвует соеденение Bluetooth или он отключен', title: 'Bluetooth');
+          _dialogService.showDialog(
+              description: 'Отсутвует соеденение Bluetooth или он отключен',
+              title: 'Bluetooth');
         }
         print('state is $val');
       });
     }
   }
 
+  @override
+  void dispose()  {
+    disconnect();
+    super.dispose();
+  }
+
+
+  void disconnect() async {
+    await printerManager.disconnect();
+  }
+
   void _print() async {
-    final SettingState state = Redux.store.state.settingState;
+    final SettingState state = Redux.store!.state.settingState!;
     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;
     }
 
@@ -92,29 +106,32 @@ class _ImageShowContainerState extends State<ImageShowContainer> {
       _printing = true;
     });
     try {
-      printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
-      PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80 ? PaperSize.mm80 : PaperSize.mm58;
+      printerManager.device = state.printerBT!;
+      await printerManager.connect();
+      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),
-            chunkSizeBytes: chunkSizeBytes,
-            queueSleepTimeMs: queueSleepTimeMs);
-        if (res.value != 1) {
-          _dialogService.showDialog(description: res.msg);
+        final bool res = await printerManager.printBytes(
+            Uint8List.fromList(await printImageCheck(paper, widget.showModel.data!.base64Data!)));
+        if (!res) {
+          _dialogService.showDialog(description: 'Ошибка при печати');
         }
       } else {
-        final PosPrintResult res = await printerManager.printTicket(
-            await printTextCheck(paper, state.printerEncoding, jsonDecode(widget.showModel.data.textData)),
-            chunkSizeBytes: chunkSizeBytes,
-            queueSleepTimeMs: queueSleepTimeMs);
-        if (res.value != 1) {
-          _dialogService.showDialog(description: res.msg);
+        final bool res = await printerManager.printBytes(
+            Uint8List.fromList(await printTextCheck(paper, state.printerEncoding!,
+                jsonDecode(widget.showModel.data!.textData!)))
+        );
+        if (!res) {
+          _dialogService.showDialog(description: 'Ошибка при печати');
         }
       }
+
     } catch (e) {
       print(e);
     }
-    await Future.delayed(Duration(seconds: 7));
+    await Future.delayed(Duration(seconds: 15));
+
     setState(() {
       _printing = false;
     });
@@ -145,7 +162,9 @@ 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),
     );
@@ -160,13 +179,13 @@ Padding imageFromBase64String(String base64String) {
 }
 
 class ImageShowModel {
-  final CheckImageModal data;
+  final CheckImageModal? data;
   final String title;
-  final String url;
-  final CardData cardData;
-  final Voucher voucher;
+  final String? url;
+  final CardData? cardData;
+  final Voucher? voucher;
 
-  ImageShowModel({this.data, this.title, this.url, this.cardData, this.voucher});
+  ImageShowModel({this.data, required this.title, this.url, this.cardData, this.voucher});
 }
 
 class MyFloatingActionButton extends StatefulWidget {
@@ -196,7 +215,7 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
       return Column(
         mainAxisAlignment: MainAxisAlignment.end,
         children: [
-          if (widget.data.cardData != null && widget.data.cardData.transactionType == "payment")
+          if (widget.data.cardData?.transactionType == "payment")
             FloatingActionButton(
               backgroundColor: redColor,
               tooltip: 'Отмена',
@@ -207,23 +226,21 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
               onPressed: () async {
                 var today = new DateTime.now();
                 var yesterday = today.subtract(new Duration(days: 1));
-                if( Redux.store.state.userState == null
-                    || Redux.store.state.userState.smena == null
-                    || Redux.store.state.userState.smena.startedAt == null
-                    || yesterday.isAfter(Redux.store.state.userState.smena.startedAt)) {
+                if(Redux.store?.state.userState?.smena?.startedAt == null
+                    || yesterday.isAfter(Redux.store!.state.userState!.smena!.startedAt!)) {
                   _dialog.showDialog(description: 'Текущая смена открыта более 24 ч. Необходимо закрыть смену и открыть ее заново.');
                   return;
                 }
                 try {
-                  await Redux.store.dispatch(changePinSkipFromSetting(true));
-                  AmanDao<CardData> response = await reversalHalykPos(widget.data.cardData, widget.data.voucher.total);
-                  if (response.success) {
+                  await Redux.store!.dispatch(changePinSkipFromSetting(true));
+                  AmanDao<CardData> response = await reversalHalykPos(widget.data.cardData!, widget.data.voucher!.total!);
+                  if (response.success == true) {
                     pressRefund();
                   } else {
-                    _dialog.showDialog(description: response.msg);
+                    _dialog.showDialog(description: response.msg!);
                   }
                 } finally {
-                  await Redux.store.dispatch(changePinSkipFromSetting(false));
+                  await Redux.store!.dispatch(changePinSkipFromSetting(false));
                 }
                 _navigatorService.replace(HomeViewRoute);
               },
@@ -236,7 +253,7 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
           SizedBox(
             height: 10,
           ),
-          if (widget.data.cardData != null && widget.data.cardData.transactionType == "payment")
+          if (widget.data.cardData != null && widget.data.cardData?.transactionType == "payment")
             FloatingActionButton(
               backgroundColor: redColor,
               tooltip: 'Возврат',
@@ -247,24 +264,24 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
               onPressed: () async {
                 var today = new DateTime.now();
                 var yesterday = today.subtract(new Duration(days: 1));
-                if( Redux.store.state.userState == null
-                    || Redux.store.state.userState.smena == null
-                    || Redux.store.state.userState.smena.startedAt == null
-                    || yesterday.isAfter(Redux.store.state.userState.smena.startedAt)) {
+                if( Redux.store!.state.userState == null
+                    || Redux.store!.state.userState?.smena == null
+                    || Redux.store!.state.userState?.smena?.startedAt == null
+                    || yesterday.isAfter(Redux.store!.state.userState!.smena!.startedAt!)) {
                   _dialog.showDialog(description: 'Текущая смена открыта более 24 ч. Необходимо закрыть смену и открыть ее заново.');
                   return;
                 }
 
                 try {
-                  await Redux.store.dispatch(changePinSkipFromSetting(true));
-                  AmanDao<CardData> response = await refundHalykPos(widget.data.cardData, widget.data.voucher.total);
-                  if (response.success) {
+                  await Redux.store!.dispatch(changePinSkipFromSetting(true));
+                  AmanDao<CardData> response = await refundHalykPos(widget.data.cardData!, widget.data.voucher!.total!);
+                  if (response.success == true) {
                     pressRefund();
                   } else {
-                    _dialog.showDialog(description: response.msg);
+                    _dialog.showDialog(description: response.msg!);
                   }
                 } finally {
-                  await Redux.store.dispatch(changePinSkipFromSetting(false));
+                  await Redux.store!.dispatch(changePinSkipFromSetting(false));
                 }
               },
               heroTag: null,
@@ -286,7 +303,7 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
                       decoration: BoxDecoration(
                           color: Colors.white,
                           borderRadius: BorderRadius.all(Radius.circular(15)),
-                          boxShadow: [BoxShadow(blurRadius: 10, color: Colors.grey[300], spreadRadius: 5)]),
+                          boxShadow: [BoxShadow(blurRadius: 10, color: Colors.grey[300]!, spreadRadius: 5)]),
                       height: 260,
                       child: Column(
                         children: <Widget>[
@@ -331,22 +348,22 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
   pressRefund() async {
     Dialogs.showLoadingDialog(context, _keyLoader);
     try {
-      AppState _state = Redux.store.state;
-      String _token = _state.userState.user.token;
-      CardData _cardData = widget.data.cardData;
-      CheckData _checkData = CheckData.fromJson(json.decode(widget.data.voucher.data));
-      Response<dynamic> response =
+      AppState _state = Redux.store!.state;
+      String _token = _state.userState!.user!.token!;
+      CardData _cardData = widget.data.cardData!;
+      CheckData _checkData = CheckData.fromJson(json.decode(widget.data.voucher!.data!));
+      Response<dynamic>? response =
           await _dataService.refundM4Bank(token: _token, cardData: _cardData, checkData: _checkData);
       if (response != null) {
         if (response.operation) {
           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');
-          Redux.store.dispatch(checkMoney);
-          Redux.store.dispatch(openSmenaPseudo);
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Redux.store!.dispatch(checkMoney);
+          Redux.store!.dispatch(openSmenaPseudo);
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _navigatorService.replace(HomeViewRoute);
           _navigatorService.push(ImageShowRoute,
               arguments: ImageShowModel(
@@ -355,23 +372,23 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
                   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();
           _dialog.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();
     }
   }
 
   void shareFile() async {
     try {
-      await Share.file('Aman Kassa', 'aman_kassa_check.png', base64Decode(widget.data.data.base64Data), 'image/png');
+      await Share.file('Aman Kassa', 'aman_kassa_check.png', base64Decode(widget.data.data!.base64Data!), 'image/png');
     } catch (e) {
       print('error: $e');
     }
@@ -385,15 +402,15 @@ class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
     DialogResponse response = await _dialog.showConfirmationDialogInput(
         description: 'Номер телефона', cancelTitle: 'Отмена', 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 message,
+    required String phone,
+    required String message,
   }) async {
     String url() {
       if (Platform.isIOS) {

lib/views/close_day_view/close_day_show_container.dart

@@ -55,19 +55,19 @@ class CloseDayShowContainer extends StatelessWidget {
           Divider(),
           Expanded(
             child: ListView.separated(
-              itemCount: data.items.length,
+              itemCount: data.items?.length ?? 0,
               separatorBuilder: (BuildContext context, int index) {
                 return Divider();
               },
               itemBuilder: (BuildContext context, int index) {
-                TransactionBean item = data.items.elementAt(index);
+                TransactionBean item = data.items!.elementAt(index);
                 return ListTile(
-                  title: Text(item.instrumentSpecificData.maskedPan),
+                  title: Text(item.instrumentSpecificData?.maskedPan ?? ''),
                   subtitle: Column(
                     crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
-                      if(item.instrumentSpecificData.cardholderName!=null)
-                        Text(item.instrumentSpecificData.cardholderName),
+                      if(item.instrumentSpecificData!.cardholderName!=null)
+                        Text(item.instrumentSpecificData!.cardholderName!),
                       Text('Операционный день № ${item.operationDay?.toString()}'),
                     ],
                   ),

lib/views/history/history_view.dart

@@ -68,16 +68,16 @@ class _HistoryViewState extends State<HistoryView> {
         },
         itemBuilder: (BuildContext context, int index) {
           Voucher voucher = data[index];
-          CardData cardData;
-          CloseDayData closeDayData;
+          CardData? cardData;
+          CloseDayData? closeDayData;
           if( voucher.type == VoucherTypeCloseDayPosReport ) {
-            closeDayData = CloseDayData.fromJson(json.decode(voucher.data));
+            closeDayData = CloseDayData.fromJson(json.decode(voucher.data!));
           } else if( voucher.data !=null ) {
-            CheckData checkData = CheckData.fromJson(json.decode(voucher.data));
+            CheckData checkData = CheckData.fromJson(json.decode(voucher.data!));
             cardData = checkData.cardData;
           }
 
- 			String base64Data = voucher.base64Data;
+ 			String? base64Data = voucher.base64Data;
           CheckImageModal checkImageData;
           if(base64Data !=null && base64Data.startsWith('{')){
             checkImageData = CheckImageModal.fromJson(jsonDecode(base64Data));
@@ -94,7 +94,7 @@ class _HistoryViewState extends State<HistoryView> {
                 _navigatorService.push(ImageShowRoute,
                     arguments: ImageShowModel(
                       data: checkImageData,
-                      title: voucher.name,
+                      title: voucher.name ?? '',
                       url: voucher.url,
                       cardData: cardData,
                       voucher: voucher,
@@ -105,7 +105,7 @@ class _HistoryViewState extends State<HistoryView> {
             subtitle: Column(
               crossAxisAlignment: CrossAxisAlignment.start,
               children: [
-                Text(dateFormat.format(voucher.dateTime)),
+                Text(dateFormat.format(voucher.dateTime!)),
                 cardData != null ? Text('№ ${cardData.cardNumber} holder: ${cardData.cardholderName}') : Text(''),
               ],
             ),
@@ -138,7 +138,7 @@ class _HistoryViewState extends State<HistoryView> {
   Text buildText(Voucher voucher) {
     if (voucher.type == VoucherTypePayment || voucher.type == VoucherTypeReturnPay) {
       return Text(
-          '${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

@@ -11,20 +11,20 @@ class BottomBar extends StatelessWidget {
   final int selectedTabIndex;
 
   BottomBar({
-    this.pageController,
-    this.selectedTabIndex,
+    required this.pageController,
+    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,
-            showUnselectedLabels: true,
             items: [
               vm.mode == SettingModeKassa
                   ? BottomNavigationBarItem(

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
-                        ? Text(vm.smena.message,
+                    vm.smena?.message != null
+                        ? 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

@@ -9,7 +9,7 @@ class PopupMenu extends StatefulWidget {
 
   final void Function(Choice value) onSelectChoice;
 
-  PopupMenu({this.onSelectChoice});
+  PopupMenu({required this.onSelectChoice});
 
   @override
   _PopupMenuState createState() => _PopupMenuState();
@@ -17,7 +17,7 @@ class PopupMenu extends StatefulWidget {
 
 class _PopupMenuState extends State<PopupMenu> {
   BankService _bankService = locator<BankService>();
-  List<Choice> choices;
+  List<Choice> choices = <Choice>[];
   @override
   void initState() {
     // TODO: implement initState

lib/views/home/home_view_m.dart

@@ -34,8 +34,8 @@ class HomeView extends StatefulWidget {
 
 class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
   Logger log = getLogger('HomeView');
-  PageController pageController;
-  int selectedTabIndex;
+  late PageController pageController;
+  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 pinSkipped = Redux.store.state.settingState.pinSkip;
+    final bool pinIsExist = Redux.store!.state.settingState?.pinCode != null && Redux.store!.state.settingState!.pinCode!.length > 3;
+    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
@@ -92,8 +92,8 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
   }
 
   _checkLockPin () async {
-    final bool pinIsExist = Redux.store.state.settingState?.pinCode?.isNotEmpty;
-    final bool pinLocked = Redux.store.state.settingState?.pinLocked;
+    final bool pinIsExist = Redux.store!.state.settingState?.pinCode != null && Redux.store!.state.settingState!.pinCode!.length > 3;
+    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);
-    _dataService.checkDbFill(Redux.store.state.userState.user);
+    Redux.store!.dispatch(checkSmena);
+    _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();
   }
@@ -143,12 +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);
-      if (result.operation && result.status == 200) {
-        Redux.store.dispatch(logoutAction);
+      Response<dynamic> result = await _api.logout(Redux.store!.state.userState!.user!.token!);
+      if(result.operation && result.status == 200) {
+        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') {
@@ -176,22 +175,24 @@ class _HomeViewState extends State<HomeView> with WidgetsBindingObserver {
         ],
         backgroundColor: fillColor,
       ),
-      body: StoreConnector<AppState, SettingState>(
-          converter: (store) => store.state.settingState,
-          builder: (context, vm) {
-            return PageView(
-              onPageChanged: (index) {
-                setState(() {
-                  selectedTabIndex = index;
-                });
-              },
-              controller: pageController,
-              children: <Widget>[
-                vm.mode == SettingModeKassa ? KassaTab(0) : CalculatorTab(0),
-                AdditionalTab(1),
-              ],
-            );
-          }),
+      body:StoreConnector<AppState, SettingState>(
+        converter: (store) => store.state.settingState!,
+        builder: (context, vm) {
+          return PageView(
+            pageSnapping: true,
+            onPageChanged: (index) {
+              setState(() {
+                selectedTabIndex = index;
+              });
+            },
+            controller: pageController,
+            children: <Widget>[
+              vm.mode == SettingModeKassa ? KassaTab(0) : CalculatorTab(0),
+              AdditionalTab(1),
+            ],
+          );
+        }
+      ),
       bottomNavigationBar: BottomBar(
         pageController: pageController,
         selectedTabIndex: selectedTabIndex,

lib/views/home/tabs/AdditionalTab.dart

@@ -49,14 +49,14 @@ class _AdditionalTabState extends State<AdditionalTab> {
   DataService _dataService = locator<DataService>();
   final GlobalKey<State> _keyLoader = new GlobalKey<State>();
 
-  bool isMoneyCheckBusy;
-  bool isClosePosBusy;
-  bool closeSmenaBusy;
-  bool openSmenaBusy;
-  bool depositBusy;
-  bool withdrawalBusy;
-  bool xReportBusy;
-  bool updateCatalog;
+  late bool isMoneyCheckBusy;
+  late bool closeSmenaBusy;
+  late bool openSmenaBusy;
+  late bool depositBusy;
+  late bool withdrawalBusy;
+  late bool xReportBusy;
+  late bool updateCatalog;
+  late bool isClosePosBusy;
 
   @override
   void initState() {
@@ -76,7 +76,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       closeSmenaBusy = true;
     });
     try {
-      await Redux.store.dispatch(closeSmena);
+      await Redux.store!.dispatch(closeSmena);
     } catch (e) {
       print(e);
     } finally {
@@ -91,7 +91,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       openSmenaBusy = true;
     });
     try {
-      await Redux.store.dispatch(openSmena);
+      await Redux.store!.dispatch(openSmena);
     } catch (e) {
       print(e);
     } finally {
@@ -106,15 +106,15 @@ class _AdditionalTabState extends State<AdditionalTab> {
       xReportBusy = true;
     });
     try {
-      User user = Redux.store.state.userState.user;
-      Response response = await _api.xReport(user.token);
+      User user = Redux.store!.state.userState!.user!;
+      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',
@@ -139,8 +139,8 @@ class _AdditionalTabState extends State<AdditionalTab> {
     });
     try {
       Dialogs.showLoadingDialog(context, _keyLoader);
-      await _dataService.getDataFromServer(Redux.store.state.userState.user);
-      Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+      await _dataService.getDataFromServer(Redux.store!.state.userState!.user!);
+      Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
     } catch (e) {
       print(e);
     } finally {
@@ -162,10 +162,10 @@ 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) {
@@ -189,10 +189,10 @@ 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) {
@@ -209,7 +209,7 @@ class _AdditionalTabState extends State<AdditionalTab> {
       isMoneyCheckBusy = true;
     });
     try {
-      await Redux.store.dispatch(checkMoney);
+      await Redux.store!.dispatch(checkMoney);
       setState(() {
         isMoneyCheckBusy = false;
       });
@@ -236,13 +236,13 @@ class _AdditionalTabState extends State<AdditionalTab> {
       return;
     }
 
-    await Redux.store.dispatch(changePinSkipFromSetting(true));
-    HalykCloseDayDao closeDayDao = await closeDayHalykPos();
-    await Redux.store.dispatch(changePinSkipFromSetting(false));
-    log.i(closeDayDao.toJson());
-    if (closeDayDao.result.code != 0) {
-      if (closeDayDao.result.description != null) {
-        _dialog.showDialog(description: closeDayDao.result.description);
+    await Redux.store!.dispatch(changePinSkipFromSetting(true));
+    HalykCloseDayDao? closeDayDao = await closeDayHalykPos();
+    await Redux.store!.dispatch(changePinSkipFromSetting(false));
+    log.i(closeDayDao?.toJson());
+    if (closeDayDao?.result?.code != 0) {
+      if (closeDayDao!.result?.description != null) {
+        _dialog.showDialog(description: closeDayDao.result!.description!);
       }
       setState(() {
         isClosePosBusy = false;
@@ -251,14 +251,14 @@ class _AdditionalTabState extends State<AdditionalTab> {
     }
 
 
-    CloseDayData closeDayData = _bankService.closeDayDataConvert(closeDayDao.transactions);
+    CloseDayData closeDayData = _bankService.closeDayDataConvert(closeDayDao!.transactions!);
 
-    User user = Redux.store.state.userState.user;
+    User user = Redux.store!.state.userState!.user!;
     _dataService.insertVoucher(
         user: user,
-        name: closeDayData.title,
+        name: closeDayData.title!,
         data: jsonEncode(closeDayData.toJson()),
-        total: closeDayData.totalAmount.toDouble(),
+        total: closeDayData.totalAmount!.toDouble(),
         type: VoucherTypeCloseDayPosReport);
 
     // _dialog.showDialog(description: 'Закрытие дня: операция прошла успешно!');
@@ -282,7 +282,7 @@ 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,
@@ -336,7 +336,7 @@ 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(
@@ -478,6 +478,6 @@ 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}) {
-    Redux.store.dispatch(onTapAction(buttonText));
+  void _onPress({required String 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_scan/gen/protos/protos.pbenum.dart';
-import 'package:barcode_scan/model/scan_options.dart';
-import 'package:barcode_scan/platform_wrapper.dart';
+import 'package:barcode_scan2/gen/protos/protos.pb.dart';
+import 'package:barcode_scan2/gen/protos/protos.pbenum.dart';
+import 'package:barcode_scan2/model/scan_options.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 dataMatrix;
+        String? barcode;
+        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,
-      onInit: (store) => Redux.store.dispatch(selectBottomElement(0)),
+      converter: (store) => store.state.kassaState!,
+      onInit: (store) => Redux.store!.dispatch(selectBottomElement(0)),
       builder: (context, vm) {
         return WillPopScope(
           onWillPop: () {
-            if (vm.prevCategories.length > 0) {
-              Redux.store.dispatch(backBottomElement);
+            if (vm.prevCategories!.length > 0) {
+              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?.last?.name
+                  vm.prevCategories!.isNotEmpty
+                      ? 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) {
-                      Redux.store.dispatch(backBottomElement);
+                    if (vm.prevCategories!.length > 0) {
+                      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];
-                        String name;
-                        String price;
+                        var el = vm.bottomSheetElements![index];
+                        String? name;
+                        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
-                                    .dispatch(selectBottomElement(el.id));
+                                Redux.store!
+                                    .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) {
-                      onChangeTradeType(newValue, settingState.tradeType);
+                    onChanged: (String? newValue) {
+                      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(selectBottomElement(0));
+      await Redux.store!.dispatch(changeTradeTypeFromSetting(newValue));
+      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;
-  TextEditingController countController;
-  TextEditingController priceController;
+  late TextEditingController nameController;
+  late TextEditingController countController;
+  late TextEditingController priceController;
   double sum = 0.0;
 
   @override
@@ -75,11 +75,12 @@ class _ProductAddBottomSheetState extends State<ProductAddBottomSheet> {
                   prefixText: ' ',
                 ),
                 keyboardType: const TextInputType.numberWithOptions(
-                  decimal: false,
+                  decimal: true,
                 ),
                 inputFormatters: <TextInputFormatter>[
                   // WhitelistingTextInputFormatter.digitsOnly
-                  FilteringTextInputFormatter.digitsOnly
+                  // FilteringTextInputFormatter.digitsOnly
+                  FilteringTextInputFormatter.allow(RegExp("^[0-9.]*")),
                 ],
                 controller: countController,
                 onChanged: calcOnChange,
@@ -157,9 +158,9 @@ 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(countController.text),
           double.parse(priceController.text),
           sum));
       Navigator.pop(context);

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;
-    Response<dynamic> response = await _apiService.infoKkm(user.token);
+    User user = Redux.store!.state.userState!.user!;
+    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

@@ -11,17 +11,18 @@ 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_scan/gen/protos/protos.pbenum.dart';
-import 'package:barcode_scan/model/scan_options.dart';
-import 'package:barcode_scan/platform_wrapper.dart';
+import 'package:barcode_scan2/gen/protos/protos.pb.dart';
+import 'package:barcode_scan2/gen/protos/protos.pbenum.dart';
+import 'package:barcode_scan2/model/scan_options.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});
 
   @override
@@ -29,9 +30,9 @@ class LoginView extends StatefulWidget {
 }
 
 class _LoginViewState extends State<LoginView> {
-  TextEditingController emailController;
+  late TextEditingController emailController;
 
-  TextEditingController passwordController;
+  late TextEditingController passwordController;
 
   final FocusNode passwordNode = new FocusNode();
 
@@ -45,10 +46,10 @@ class _LoginViewState extends State<LoginView> {
   void initState() {
     super.initState();
     if (widget.loginModel != null &&
-        widget.loginModel.authType == AuthenticateTypeLogin) {
-      emailController = TextEditingController(text: widget.loginModel.login);
+        widget.loginModel?.authType == AuthenticateTypeLogin) {
+      emailController = TextEditingController(text: widget.loginModel?.login);
       passwordController =
-          TextEditingController(text: widget.loginModel.password);
+          TextEditingController(text: widget.loginModel?.password);
     } else {
       emailController = TextEditingController();
       passwordController = TextEditingController();
@@ -65,86 +66,87 @@ 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,
-              backgroundColor: fillColor,
-              body: SingleChildScrollView(
-                physics: BouncingScrollPhysics(),
-                child: Padding(
-                  padding: const EdgeInsets.symmetric(horizontal: 50),
-                  child: Column(
-                    mainAxisSize: MainAxisSize.max,
-                    mainAxisAlignment: MainAxisAlignment.center,
-                    crossAxisAlignment: CrossAxisAlignment.center,
-                    children: <Widget>[
-                      verticalSpaceLarge,
-                      Stack(
-                        alignment: Alignment.bottomLeft,
-                        children: <Widget>[
-                          SizedBox(
-                            height: 150,
-                            child: Image.asset('assets/images/logo.png'),
+            key: _scaffoldKey,
+            backgroundColor: fillColor,
+            body: SingleChildScrollView(
+              physics: BouncingScrollPhysics(),
+              child: Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 50),
+                child: Column(
+                  mainAxisSize: MainAxisSize.max,
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: <Widget>[
+                    verticalSpaceLarge,
+                    Stack(
+                      alignment: Alignment.bottomLeft,
+                      children: <Widget>[
+                        SizedBox(
+                          height: 150,
+                          child: Image.asset('assets/images/logo.png'),
+                        ),
+                        Positioned(
+                          child: Text(
+                            'онлайн касса',
+                            style: TextStyle(fontWeight: FontWeight.bold),
                           ),
-                          Positioned(
-                            child: Text(
-                              'онлайн касса',
-                              style: TextStyle(fontWeight: FontWeight.bold),
-                            ),
-                            bottom: 23.0,
-                            left: 25.0,
-                          ),
-                        ],
-                      ),
+                          bottom: 23.0,
+                          left: 25.0,
+                        ),
+                      ],
+                    ),
 
-                      InputField(
-                        placeholder: 'Электронная почта',
-                        controller: emailController,
-                        textInputType: TextInputType.emailAddress,
-                        nextFocusNode: passwordNode,
-                        additionalNote: vm.loginFormMessage.email,
-                      ),
-                      verticalSpaceSmall,
-                      InputField(
-                        placeholder: 'Пароль',
-                        password: true,
-                        controller: passwordController,
-                        fieldFocusNode: passwordNode,
-                        additionalNote: vm.loginFormMessage.password,
-                        enterPressed: _pressBtnEnter,
-                        textInputAction: TextInputAction.done,
-                      ),
-                      verticalSpaceMedium,
-                      Row(
-                        mainAxisSize: MainAxisSize.max,
-                        mainAxisAlignment: MainAxisAlignment.end,
-                        children: [
-                          SizedBox(
-                            width: 150,
-                            child: BusyButton(
-                              title: 'Войти',
-                              busy: vm.isLoading,
-                              onPressed: _pressBtnEnter,
-                            ),
-                          )
-                        ],
-                      ),
-                      verticalSpaceLarge,
+                    InputField(
+                      placeholder: 'Электронная почта',
+                      controller: emailController,
+                      textInputType: TextInputType.emailAddress,
+                      nextFocusNode: passwordNode,
+                      additionalNote: vm.loginFormMessage?.email,
+                    ),
+                    verticalSpaceSmall,
+                    InputField(
+                      placeholder: 'Пароль',
+                      password: true,
+                      controller: passwordController,
+                      fieldFocusNode: passwordNode,
+                      additionalNote: vm.loginFormMessage?.password,
+                      enterPressed: _pressBtnEnter,
+                      textInputAction: TextInputAction.done,
+                    ),
+                    verticalSpaceMedium,
+                    Row(
+                      mainAxisSize: MainAxisSize.max,
+                      mainAxisAlignment: MainAxisAlignment.end,
+                      children: [
+                        SizedBox(
+                          width: 150,
+                          child: BusyButton(
+                            title: 'Войти',
+                            busy: vm.isLoading ?? false,
+                            onPressed: _pressBtnEnter,
+                          ),
+                        )
+                      ],
+                    ),
+                    verticalSpaceLarge,
 //                    TextLink(
 //                      'Регистрация',
 //                      onPressed: () {},
 //                    ),
-                      IconButton(
-                        icon: Icon(MdiIcons.qrcodeScan),
-                        iconSize: 40,
-                        tooltip: "Scan",
-                        onPressed: scan,
-                      )
-                    ],
-                  ),
+                    IconButton(
+                      icon: Icon(MdiIcons.qrcodeScan),
+                      iconSize: 40,
+                      tooltip: "Scan",
+                      onPressed: scan,
+                    )
+                  ],
                 ),
-              ));
+              ),
+            ),
+          );
         });
   }
 
@@ -155,7 +157,7 @@ class _LoginViewState extends State<LoginView> {
     } else {
       _apiService.test = false;
     }
-    Redux.store
+    Redux.store!
         .dispatch(authenticate(emailController.text, passwordController.text));
   }
 
@@ -172,14 +174,13 @@ class _LoginViewState extends State<LoginView> {
       // print(result.format); // The barcode format (as enum)
       // print(result
       //     .formatNote); // If a unknown format was scanned this field contains a note
-      if (result.type == ResultType.Barcode &&
-          result.rawContent?.length == 60) {
+      if (result.type == ResultType.Barcode && 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');
       }
@@ -200,8 +201,9 @@ class _LoginViewState extends State<LoginView> {
 }
 
 class LoginModel {
-  final String authType;
-  final String login;
-  final String password;
+  final String? authType;
+  final String? login;
+  final String? password;
+
   LoginModel({this.authType, this.login, this.password});
 }

lib/views/payment/halyk_pos_service.dart

@@ -22,43 +22,43 @@ Logger log = getLogger('PaymentNfcView');
 
 Future<AmanDao<CardData>> paymentHalykPos(double total) async {
   //Авторизация
-  String token = Redux.store.state.userState.user.token;
-  BankState bankState = Redux.store.state.bankState;
+  String token = Redux.store!.state.userState!.user!.token!;
+  BankState bankState = Redux.store!.state.bankState!;
   //права доступа
-  HalykPosSession session = await _bankService.renewToken(
-      token: token, login: bankState.login, password: bankState.password);
-  if (session.token == null) {
+  HalykPosSession? session = await _bankService.renewToken(
+      token: token, login: bankState.login!, password: bankState.password!);
+  if (session == null || session.token == null) {
     return sessionDeclineDao(session);
   }
 
   //Инициализация
   HalykResponse response =
-      await _bankService.pay(token: session.token, amount: total);
-  if (response.result.code == 0) {
+      await _bankService.pay(token: session.token!, amount: total);
+  if (response.result?.code == 0) {
     CardData cardData = new CardData(
         authorizationCode:
-            response.transaction.instrumentSpecificData.authorizationCode,
+            response.transaction?.instrumentSpecificData?.authorizationCode,
         cardholderName:
-            response.transaction.instrumentSpecificData.cardholderName,
-        cardNumber: response.transaction.instrumentSpecificData.maskedPan,
-        operationDay: response.transaction.operationDay,
-        transactionNumber: response.transaction.transactionNumber,
-        terminalId: response.transaction.terminalId,
+            response.transaction?.instrumentSpecificData?.cardholderName,
+        cardNumber: response.transaction?.instrumentSpecificData?.maskedPan,
+        operationDay: response.transaction?.operationDay,
+        transactionNumber: response.transaction?.transactionNumber,
+        terminalId: response.transaction?.terminalId,
         transactionType: 'payment');
     return AmanDao<CardData>(
-        msg: response.result.description, success: true, data: cardData);
+        msg: response.result?.description, success: true, data: cardData);
   }
   return AmanDao<CardData>(
-      msg: response.result.errorData != null
-          ? response.result.errorData.description
-          : response.result.description,
+      msg: response.result?.errorData != null
+          ? response.result!.errorData!.description
+          : response.result!.description,
       success: false);
 }
 
-AmanDao<CardData> sessionDeclineDao(HalykPosSession session) {
+AmanDao<CardData> sessionDeclineDao(HalykPosSession? session) {
   String msg = 'Отказано в доступе к API банка';
-  if(session.result?.Response?.Description != null) {
-    msg = '${session.result.Response.Description} (${session.result.Response.Code}) ';
+  if(session!=null && session.result?.Response?.Description != null) {
+    msg = '${session.result?.Response?.Description} (${session.result?.Response?.Code}) ';
   }
   return AmanDao<CardData>(success: false, msg: msg);
 }
@@ -66,93 +66,93 @@ AmanDao<CardData> sessionDeclineDao(HalykPosSession session) {
 Future<AmanDao<CardData>> refundHalykPos(
     CardData refundData, double total) async {
   //Авторизация
-  String token = Redux.store.state.userState.user.token;
-  BankState bankState = Redux.store.state.bankState;
+  String token = Redux.store!.state.userState!.user!.token!;
+  BankState bankState = Redux.store!.state.bankState!;
   //права доступа
-  HalykPosSession session = await _bankService.renewToken(
-      token: token, login: bankState.login, password: bankState.password);
-  if (session.token == null) {
+  HalykPosSession? session = await _bankService.renewToken(
+      token: token, login: bankState.login!, password: bankState.password!);
+  if (session == null || session.token == null) {
     return sessionDeclineDao(session);
   }
   HalykResponse response = await _bankService.refund(
-      token: session.token,
+      token: session.token!,
       amount: total,
-      operDay: refundData.operationDay,
-      terminalId: refundData.terminalId,
-      transNum: refundData.transactionNumber);
-  if (response.result.code == 0) {
+      operDay: refundData.operationDay!,
+      terminalId: refundData.terminalId!,
+      transNum: refundData.transactionNumber!);
+  if (response.result?.code == 0) {
     CardData cardData = new CardData(
         authorizationCode:
-            response.transaction.instrumentSpecificData.authorizationCode,
+            response.transaction?.instrumentSpecificData?.authorizationCode,
         cardholderName:
-            response.transaction.instrumentSpecificData.cardholderName,
-        cardNumber: response.transaction.instrumentSpecificData.maskedPan,
-        operationDay: response.transaction.operationDay,
-        transactionNumber: response.transaction.transactionNumber,
-        terminalId: response.transaction.terminalId,
+            response.transaction?.instrumentSpecificData?.cardholderName,
+        cardNumber: response.transaction?.instrumentSpecificData?.maskedPan,
+        operationDay: response.transaction?.operationDay,
+        transactionNumber: response.transaction?.transactionNumber,
+        terminalId: response.transaction?.terminalId,
         transactionType: 'refund');
     return AmanDao<CardData>(
-        msg: response.result.description, success: true, data: cardData);
+        msg: response.result?.description, success: true, data: cardData);
   }
   return AmanDao<CardData>(
-      msg: response.result.errorData != null
-          ? response.result.errorData.description
-          : response.result.description,
+      msg: response.result?.errorData != null
+          ? response.result!.errorData!.description
+          : response.result!.description,
       success: false);
 }
 
 Future<AmanDao<CardData>> reversalHalykPos(
     CardData refundData, double total) async {
   //Авторизация
-  String token = Redux.store.state.userState.user.token;
-  BankState bankState = Redux.store.state.bankState;
+  String token = Redux.store!.state.userState!.user!.token!;
+  BankState bankState = Redux.store!.state.bankState!;
   //права доступа
-  HalykPosSession session = await _bankService.renewToken(
-      token: token, login: bankState.login, password: bankState.password);
-  if (session.token == null) {
+  HalykPosSession? session = await _bankService.renewToken(
+      token: token, login: bankState.login ?? '', password: bankState.password ?? '');
+  if (session == null || session.token == null) {
     return sessionDeclineDao(session);
   }
   log.i(refundData.toJson());
   HalykResponse response = await _bankService.reversal(
-      token: session.token,
-      operDay: refundData.operationDay,
-      terminalId: refundData.terminalId,
-      transNum: refundData.transactionNumber);
-  if (response.result.code == 0) {
+      token: session.token!,
+      operDay: refundData.operationDay!,
+      terminalId: refundData.terminalId!,
+      transNum: refundData.transactionNumber!);
+  if (response.result?.code == 0) {
     CardData cardData = new CardData(
         authorizationCode:
-            response.transaction.instrumentSpecificData.authorizationCode,
+            response.transaction?.instrumentSpecificData?.authorizationCode,
         cardholderName:
-            response.transaction.instrumentSpecificData.cardholderName,
-        cardNumber: response.transaction.instrumentSpecificData.maskedPan,
-        operationDay: response.transaction.operationDay,
-        transactionNumber: response.transaction.transactionNumber,
-        terminalId: response.transaction.terminalId,
+            response.transaction?.instrumentSpecificData?.cardholderName,
+        cardNumber: response.transaction?.instrumentSpecificData?.maskedPan,
+        operationDay: response.transaction?.operationDay,
+        transactionNumber: response.transaction?.transactionNumber,
+        terminalId: response.transaction?.terminalId,
         transactionType: 'reversal');
     return AmanDao<CardData>(
-        msg: response.result.description, success: true, data: cardData);
+        msg: response.result?.description, success: true, data: cardData);
   }
   return AmanDao<CardData>(
-      msg: response.result.errorData != null
-          ? response.result.errorData.description
-          : response.result.description,
+      msg: response.result?.errorData != null
+          ? response.result!.errorData!.description
+          : response.result!.description,
       success: false);
 }
 
-Future<Cd.HalykCloseDayDao> closeDayHalykPos() async {
+Future<Cd.HalykCloseDayDao?> closeDayHalykPos() async {
   //Авторизация
-  String token = Redux.store.state.userState.user.token;
-  BankState bankState = Redux.store.state.bankState;
+  String token = Redux.store!.state.userState!.user!.token!;
+  BankState bankState = Redux.store!.state.bankState!;
   //права доступа
-  HalykPosSession session = await _bankService.renewToken(
-      token: token, login: bankState.login, password: bankState.password);
-  if (session.token == null) {
+  HalykPosSession? session = await _bankService.renewToken(
+      token: token, login: bankState.login ?? '', password: bankState.password ?? '');
+  if (session== null || session.token == null) {
     return new Cd.HalykCloseDayDao(
         result: Cd.ResultBean(
             description: 'Отказано в доступе к API банка', code: -1));
   }
   //Инициализация
-  Cd.HalykCloseDayDao response =
-      await _bankService.closeDay(token: session.token);
+  Cd.HalykCloseDayDao? response =
+      await _bankService.closeDay(token: session.token!);
   return response;
 }

lib/views/payment/payment_view.dart

@@ -40,7 +40,7 @@ import '../../core/models/card_data.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();
@@ -52,8 +52,8 @@ class _PaymentViewState extends State<PaymentView> {
   final DialogService _dialogService = locator<DialogService>();
   BankService _bankService = locator<BankService>();
   final NavigatorService _navigatorService = locator<NavigatorService>();
-  bool isBusy;
-  bool isBankApiAccess;
+  late bool isBusy;
+  late bool isBankApiAccess;
 
   @override
   void initState() {
@@ -127,9 +127,9 @@ 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,
@@ -137,9 +137,9 @@ 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,
@@ -202,42 +202,49 @@ class _PaymentViewState extends State<PaymentView> {
     return StoreConnector<AppState, AppState>(
         converter: (store) => store.state,
         builder: (_, _state) {
-          BankState state = _state.bankState;
+          BankState state = _state.bankState!;
           double _total;
           if (widget.model.mode == SettingModeCalc) {
-            String value = totalCalc(_state.calcState.calcItems);
+            String value = totalCalc(_state.calcState!.calcItems!);
             _total = double.parse(value);
           } else {
-            String value = totalKassa(_state.kassaState.kassaItems);
+            String value = totalKassa(_state.kassaState!.kassaItems!);
             _total = double.parse(value);
           }
 
-          if (state.password == null || state.login == null || state.password.length < 1 || state.login.length < 1) {
+          if (state.password == null || state.login == null || state.password!.length < 1 || state.login!.length < 1) {
             return Container();
           }
           return InkWell(
-            onTap: () async {
+            onTap: isBusy ? null : () async {
+
 
               var today = new DateTime.now();
               var yesterday = today.subtract(new Duration(days: 1));
-              if( Redux.store.state.userState == null
-                  || Redux.store.state.userState.smena == null
-                  || Redux.store.state.userState.smena.startedAt == null
-                  || yesterday.isAfter(Redux.store.state.userState.smena.startedAt)) {
+              if( Redux.store!.state.userState == null
+                  || Redux.store!.state.userState!.smena == null
+                  || Redux.store!.state.userState!.smena!.startedAt == null
+                  || yesterday.isAfter(Redux.store!.state.userState!.smena!.startedAt!)) {
                 _dialogService.showDialog(description: 'Текущая смена открыта более 24 ч. Необходимо закрыть смену и открыть ее заново.');
                 return;
               }
+              setState(() {
+                isBusy = true;
+              });
 
               try {
-                await Redux.store.dispatch(changePinSkipFromSetting(true));
+                await Redux.store!.dispatch(changePinSkipFromSetting(true));
                 AmanDao<CardData> data = await paymentHalykPos(_total);
-                if (data.success) {
-                  pressPayment(widget.model.operationType, data.data);
+                if (data.success == true) {
+                  pressPayment('card', data.data);
                 } else {
-                  _dialogService.showDialog(description: data.msg);
+                  _dialogService.showDialog(description: data.msg ?? '');
                 }
               } finally {
-                await Redux.store.dispatch(changePinSkipFromSetting(false));
+                await Redux.store!.dispatch(changePinSkipFromSetting(false));
+                setState(() {
+                  isBusy = false;
+                });
               }
             },
             splashColor: halykColor.withOpacity(0.4),
@@ -290,22 +297,22 @@ class _PaymentViewState extends State<PaymentView> {
     );
   }
 
-  pressPayment(String type, CardData cardData) async {
+  pressPayment(String type, CardData? cardData) async {
     setState(() {
       isBusy = true;
     });
     Dialogs.showLoadingDialog(context, _keyLoader);
     try {
-      AppState _state = Redux.store.state;
-      String _token = _state.userState.user.token;
-      String _tradeType = _state.settingState.tradeType;
-      String _mode = _state.settingState.mode;
+      AppState _state = Redux.store!.state;
+      String _token = _state.userState!.user!.token!;
+      String _tradeType = _state.settingState!.tradeType!;
+      String _mode = _state.settingState!.mode!;
       if (_mode == SettingModeCalc) {
         _tradeType = SettingTradeTypeGood;
       }
-      List<ProductDao> kassaItems = _state.kassaState.kassaItems;
-      List<CalcModel> calcItems = _state.calcState.calcItems;
-      Response<dynamic> response = await _dataService.sellOrReturn(
+      List<ProductDao> kassaItems = _state.kassaState!.kassaItems!;
+      List<CalcModel> calcItems = _state.calcState!.calcItems!;
+      Response<dynamic>? response = await _dataService.sellOrReturn(
           token: _token,
           kassaItems: kassaItems,
           paymentType: type,
@@ -323,16 +330,16 @@ 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(openSmenaPseudo);
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Redux.store!.dispatch(checkMoney);
+          Redux.store!.dispatch(openSmenaPseudo);
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _navigatorService.pop();
           _navigatorService.push(ImageShowRoute,
               arguments: ImageShowModel(data: new CheckImageModal(
@@ -340,20 +347,20 @@ class _PaymentViewState extends State<PaymentView> {
                   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();
       setState(() {
@@ -375,7 +382,7 @@ 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);
@@ -388,8 +395,8 @@ class _PaymentViewState extends State<PaymentView> {
 class PaymentModel {
   String operationType;
   String mode;
-  Voucher voucher;
-  CardData cardData;
+  Voucher? voucher;
+  CardData? cardData;
 
-  PaymentModel({this.mode, this.operationType, this.voucher, this.cardData});
+  PaymentModel({required this.mode, required this.operationType, this.voucher, this.cardData});
 }

lib/views/payment_nfc/payment_nfc_view.dart

@@ -44,7 +44,7 @@ import 'package:logger/logger.dart';
 
 class PaymentNfcView extends StatefulWidget {
   final PaymentModel model;
-  const PaymentNfcView({Key key, this.model}) : super(key: key);
+  const PaymentNfcView({Key? key, required this.model}) : super(key: key);
 
   @override
   _PaymentNfcViewState createState() => _PaymentNfcViewState();
@@ -57,9 +57,9 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
   final DataService _dataService = locator<DataService>();
   final NavigatorService _navigatorService = locator<NavigatorService>();
   Logger log = getLogger('PaymentNfcView');
-  bool isBusy;
-  bool isPhoneScaled;
-  int status;
+  late bool isBusy;
+  late bool isPhoneScaled;
+  late int status;
 
   @override
   void initState() {
@@ -73,12 +73,12 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
   void start() async {
 
     //Авторизация
-    String token = Redux.store.state.userState.user.token;
-    BankState bankState = Redux.store.state.bankState;
+    String token = Redux.store!.state.userState!.user!.token!;
+    BankState bankState = Redux.store!.state.bankState!;
     //права доступа
-    HalykPosSession session = await _bankService.renewToken(token: token, login: bankState.login, password: bankState.password);
+    HalykPosSession? session = await _bankService.renewToken(token: token, login: bankState.login!, password: bankState.password!);
     log.i(session);
-    if (session.token ==null) {
+    if (session == null || session.token ==null) {
       setState(() {
         status = 4;
       });
@@ -100,10 +100,10 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
 
     var today = new DateTime.now();
     var yesterday = today.subtract(new Duration(days: 1));
-    if( Redux.store.state.userState == null
-        || Redux.store.state.userState.smena == null
-        || Redux.store.state.userState.smena.startedAt == null
-        || yesterday.isAfter(Redux.store.state.userState.smena.startedAt)) {
+    if( Redux.store!.state.userState == null
+        || Redux.store!.state.userState!.smena == null
+        || Redux.store!.state.userState!.smena!.startedAt == null
+        || yesterday.isAfter(Redux.store!.state.userState!.smena!.startedAt!)) {
       _dialogService.showDialog(description: 'Текущая смена открыта более 24 ч. Необходимо закрыть смену и открыть ее заново.');
       _navigatorService.pop();
       return;
@@ -163,7 +163,7 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
   }
 
   refund() async {
-    CardData _cardData = widget.model.cardData;
+    //CardData _cardData = widget.model.cardData;
     // AmanDao findTransaction = await _bankService.findTransaction(transactionNumber: _cardData.transactionNumber, authorizationCode: _cardData.authorizationCode);
     // if(!findTransaction.success){
     //   _dialogService.showDialog(description: findTransaction.msg);
@@ -264,18 +264,18 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
     });
     Dialogs.showLoadingDialog(context, _keyLoader);
     try {
-      AppState _state = Redux.store.state;
-      String _token = _state.userState.user.token;
-      String _tradeType = _state.settingState.tradeType;
-      String _mode = _state.settingState.mode;
+      AppState _state = Redux.store!.state;
+      String _token = _state.userState!.user!.token!;
+      String _tradeType = _state.settingState!.tradeType!;
+      String _mode = _state.settingState!.mode!;
       if (_mode == SettingModeCalc) {
         _tradeType = SettingTradeTypeGood;
       }
-      CardData cardData = cardDataDynamic != null ? CardData.fromJson(cardDataDynamic) : null;
+      CardData? cardData = cardDataDynamic != null ? CardData.fromJson(cardDataDynamic) : null;
 
-      List<ProductDao> kassaItems = _state.kassaState.kassaItems;
-      List<CalcModel> calcItems = _state.calcState.calcItems;
-      Response<dynamic> response = await _dataService.sellOrReturn(
+      List<ProductDao> kassaItems = _state.kassaState!.kassaItems!;
+      List<CalcModel> calcItems = _state.calcState!.calcItems!;
+      Response<dynamic>? response = await _dataService.sellOrReturn(
           token: _token,
           kassaItems: kassaItems,
           paymentType: type,
@@ -293,31 +293,31 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
           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'];
           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(openSmenaPseudo);
-          Navigator.of(_keyLoader.currentContext, rootNavigator: true).pop();
+          Redux.store!.dispatch(checkMoney);
+          Redux.store!.dispatch(openSmenaPseudo);
+          Navigator.of(_keyLoader.currentContext!, rootNavigator: true).pop();
           _navigatorService.replace(HomeViewRoute);
           _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 {
-          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();
       setState(() {
@@ -470,9 +470,9 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
   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: whiteColor,
@@ -481,9 +481,9 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
     }
     if(widget.model.voucher !=null) {
       return StoreConnector<AppState, KassaState>(
-          converter: (store) => store.state.kassaState,
+          converter: (store) => store.state.kassaState!,
           builder: (_, vm) {
-            return Text('${widget.model.voucher.total} тнг',
+            return Text('${widget.model.voucher?.total} тнг',
                 style: TextStyle(
                     fontWeight: FontWeight.bold,
                     color: whiteColor,
@@ -491,9 +491,9 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
           });
     }
     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: whiteColor,
@@ -514,7 +514,7 @@ class _PaymentNfcViewState extends State<PaymentNfcView> {
     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);

lib/views/payment_nfc/widgets/action_view.dart

@@ -5,14 +5,14 @@ import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
 class ActionView extends StatelessWidget {
-  final String acceptText;
-  final String declineText;
-  final void Function() acceptCallback;
-  final void Function() declineCallback;
+  final String? acceptText;
+  final String? declineText;
+  final void Function()? acceptCallback;
+  final void Function()? declineCallback;
   final bool show;
 
   const ActionView(
-      {Key key,
+      {Key? key,
       this.acceptText,
       this.declineText,
       this.acceptCallback,
@@ -39,10 +39,10 @@ class ActionView extends StatelessWidget {
     return Row(
       children: <Widget>[
         if (acceptCallback !=null && acceptText !=null)
-          Expanded(child: BusyButton(title: acceptText, onPressed: acceptCallback)),
+          Expanded(child: BusyButton(title: acceptText!, onPressed: acceptCallback!)),
         SizedBox(width: 5.0,),
         if (declineCallback !=null && declineText !=null)
-          BusyButton(title: declineText, onPressed: declineCallback, mainColor: redColor,)
+          BusyButton(title: declineText!, onPressed: declineCallback!, mainColor: redColor,)
       ],
     );
   }

lib/views/payment_nfc/widgets/phone_view.dart

@@ -8,7 +8,7 @@ import 'package:material_design_icons_flutter/material_design_icons_flutter.dart
 
 class PhoneView extends StatefulWidget {
   final bool scaled;
-  final int status;
+  final int? status;
 
   const PhoneView({this.scaled = false, this.status });
 

lib/views/payment_nfc/widgets/text_state.dart

@@ -5,10 +5,10 @@ import 'package:flutter/material.dart';
 import 'package:flutter_screenutil/flutter_screenutil.dart';
 
 class TextStateView extends StatelessWidget {
-  final int status;
+  final int? status;
   final String text;
 
-  const TextStateView({Key key, this.status, this.text = ''}) : super(key: key);
+  const TextStateView({Key? key, this.status, this.text = ''}) : super(key: key);
 
   @override
   Widget build(BuildContext context) {

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 value;
+  final String? name;
+  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 {
-  final Ticket ticket = Ticket(paper);
+Future<List<int>> testTicket(PaperSize paper) async {
 
-  //Uint8List encTxt11 = await CharsetConverter.encode("cp866", "Russian: Привет Мир!");
-  //ticket.textEncoded(encTxt11, styles: PosStyles(codeTable: PosCodeTable.pc866_2));
-  //ticket.textEncoded(encTxt11);
-
-  // 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(
+  final profile = await CapabilityProfile.load();
+  final ticket = Generator(PaperSize.mm80, profile);
+  List<int> bytes  = [];
+  bytes += 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));
-  ticket.text('Reverse text', styles: PosStyles(reverse: true));
-  ticket.text('Underlined text',
+  bytes += ticket.text('Bold text', styles: PosStyles(bold: true));
+  bytes += ticket.text('Reverse text', styles: PosStyles(reverse: true));
+  bytes += ticket.text('Underlined text',
       styles: PosStyles(underline: true), linesAfter: 1);
-  ticket.text('Align left', styles: PosStyles(align: PosAlign.left));
-  ticket.text('Align center', styles: PosStyles(align: PosAlign.center));
-  ticket.text('Align right',
+  bytes += ticket.text('Align left', styles: PosStyles(align: PosAlign.left));
+  bytes += ticket.text('Align center', styles: PosStyles(align: PosAlign.center));
+  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,
@@ -101,66 +62,69 @@ 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();
-  return ticket;
+  bytes += ticket.cut();
+  return bytes;
 }
 
-Future<Ticket> testTicketImage(PaperSize paper) async {
-  final Ticket ticket = Ticket(paper);
+Future<List<int>> testTicketImage(PaperSize paper) async {
+  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();
-  return ticket;
+  bytesResult += ticket.cut();
+  return bytesResult;
 }
 
-Future<Ticket> printImageCheck(PaperSize paper, String base64Src) async {
-  final Ticket ticket = Ticket(paper);
+Future<List<int>> printImageCheck(PaperSize paper, String base64Src) async {
+  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);
-  ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
-  //ticket.image(image);
-  ticket.feed(2);
-  ticket.cut();
-  return ticket;
+  final Im.Image? image = Im.decodeImage(bytes);
+  if(image != null) {
+    bytesResult += ticket.imageRaster(image, imageFn: PosImageFn.bitImageRaster);
+  }
+  bytesResult += ticket.feed(2);
+  bytesResult += ticket.cut();
+  return bytesResult;
 }
 
 
-Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async {
-  final Ticket ticket = Ticket(paper);
-  ticket.emptyLines(1);
-
-
-  PosCodeTable codeTable;
+Future<List<int>> printTextCheck(PaperSize paper, String encoding, var data ) async {
+  final profile = await CapabilityProfile.load();
+  final ticket = Generator(paper, profile);
+  List<int> bytesResult  = [];
+  String codeTable = 'CP866';
   if(encoding == SettingPrinterEncodingCp866) {
-    codeTable = PosCodeTable.pc866_2;
+    codeTable = 'CP866';
   } else if(encoding == SettingPrinterEncodingWin1251) {
-    codeTable = PosCodeTable.wpc1251;
+    codeTable = 'CP1251';
   }
-
-  //ticket.setGlobalCodeTable(codeTable);
-  ticket.setGlobalFont(PosFontType.fontB);
-
-
+  ticket.setGlobalCodeTable(codeTable);
+  bytesResult += ticket.emptyLines(1);
   String qr = data['qr'];
 
 
@@ -172,7 +136,7 @@ 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 +151,16 @@ 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 +169,7 @@ 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 +181,12 @@ 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());
-    ticket.image(img);
+    if(uiImg !=null) {
+      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 +194,9 @@ Future<Ticket> printTextCheck(PaperSize paper, String encoding, var data ) async
   }
 
 
-  ticket.emptyLines(1);
-  ticket.feed(1);
+  bytesResult += ticket.emptyLines(1);
+  bytesResult += ticket.feed(1);
 
-  ticket.cut();
-  return ticket;
+  bytesResult += ticket.cut();
+  return bytesResult;
 }

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

@@ -1,28 +1,19 @@
-import 'dart:async';
-import 'dart:typed_data';
-import 'dart:ui' as ui;
-
 import 'package:aman_kassa_flutter/core/logger.dart';
 import 'package:aman_kassa_flutter/redux/actions/setting_actions.dart';
 import 'package:aman_kassa_flutter/redux/store.dart';
 
-import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
-import 'package:esc_pos_utils/esc_pos_utils.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart' hide Image;
 import 'package:flutter/rendering.dart';
 
 
-import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
-import 'package:intl/intl.dart';
 import 'package:logger/logger.dart';
-
 import '../data/settings_envi.dart';
 
 
 class PrinterEncodingView extends StatefulWidget {
-  PrinterEncodingView({Key key, this.title}) : super(key: key);
-  final String title;
+  PrinterEncodingView({Key? key, this.title}) : super(key: key);
+  final String? title;
 
   @override
   _PrinterEncodingViewState createState() => _PrinterEncodingViewState();
@@ -44,7 +35,7 @@ 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 +67,7 @@ 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

@@ -1,28 +1,19 @@
-import 'dart:async';
-import 'dart:typed_data';
-import 'dart:ui' as ui;
-
 import 'package:aman_kassa_flutter/core/logger.dart';
 import 'package:aman_kassa_flutter/redux/actions/setting_actions.dart';
 import 'package:aman_kassa_flutter/redux/store.dart';
 
-import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
-import 'package:esc_pos_utils/esc_pos_utils.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart' hide Image;
 import 'package:flutter/rendering.dart';
 
-
-import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
-import 'package:intl/intl.dart';
 import 'package:logger/logger.dart';
 
 import '../data/settings_envi.dart';
 
 
 class PrinterPaperView extends StatefulWidget {
-  PrinterPaperView({Key key, this.title}) : super(key: key);
-  final String title;
+  PrinterPaperView({Key? key, this.title}) : super(key: key);
+  final String? title;
 
   @override
   _PrinterEncodingViewState createState() => _PrinterEncodingViewState();
@@ -44,7 +35,7 @@ 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 +67,7 @@ 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

@@ -1,28 +1,19 @@
-import 'dart:async';
-import 'dart:typed_data';
-import 'dart:ui' as ui;
-
+import 'package:aman_kassa_flutter/core/locator.dart';
 import 'package:aman_kassa_flutter/core/logger.dart';
+import 'package:aman_kassa_flutter/core/services/blue_print_service.dart';
 import 'package:aman_kassa_flutter/redux/actions/setting_actions.dart';
 import 'package:aman_kassa_flutter/redux/store.dart';
+import 'package:bluetooth_print/bluetooth_print_model.dart';
 
-import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
-import 'package:esc_pos_utils/esc_pos_utils.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart' hide Image;
 import 'package:flutter/rendering.dart';
 
-
-import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
-import 'package:intl/intl.dart';
 import 'package:logger/logger.dart';
 
-import '../PrinterTest.dart';
-
-
 class PrinterSelectView extends StatefulWidget {
-  PrinterSelectView({Key key, this.title}) : super(key: key);
-  final String title;
+  PrinterSelectView({Key? key, this.title}) : super(key: key);
+  final String? title;
 
   @override
   _PrinterSelectViewState createState() => _PrinterSelectViewState();
@@ -30,16 +21,14 @@ class PrinterSelectView extends StatefulWidget {
 }
 
 class _PrinterSelectViewState extends State<PrinterSelectView> {
-  PrinterBluetoothManager printerManager = PrinterBluetoothManager();
-  List<PrinterBluetooth> _devices = [];
+  BluePrintService printerManager = locator<BluePrintService>();
+  List<BluetoothDevice> _devices = [];
   Logger _logger = getLogger('PrinterSelectView');
 
   @override
   void initState() {
     super.initState();
-
-    printerManager.scanResults.listen((devices) async {
-      // print('UI: Devices found ${devices.length}');
+    printerManager.scanResult.listen((devices) async {
       setState(() {
         _devices = devices;
       });
@@ -51,172 +40,15 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
     setState(() {
       _devices = [];
     });
-    printerManager.startScan(Duration(seconds: 4));
+    printerManager.scan();
   }
 
   void _stopScanDevices() {
     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);
+  void _selectPrinter(BluetoothDevice printer, BuildContext context, ) async {
+    printerManager.device = printer;
     _logger.i(printer.name);
     _logger.i(printer.address);
 
@@ -225,33 +57,9 @@ 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);
   }
-
-  void _testPrint(PrinterBluetooth printer) async {
-    printerManager.selectPrinter(printer);
-
-    // TODO Don't forget to choose printer's paper
-    const PaperSize paper = PaperSize.mm58;
-
-    // TEST PRINT
-    // final PosPrintResult res =
-    // await printerManager.printTicket(await testTicket(paper), queueSleepTimeMs: 50);
-
-    final PosPrintResult res =
-     await printerManager.printTicket(
-         await testTicketImage(paper),
-         chunkSizeBytes: 1024,
-         queueSleepTimeMs: 50
-     );
-
-    // DEMO RECEIPT
-    // final PosPrintResult res =
-    // await printerManager.printTicket(await demoReceipt(paper) , queueSleepTimeMs: 50);
-
-  }
-
   final key = GlobalKey();
 
   @override
@@ -283,7 +91,7 @@ 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]),
@@ -300,10 +108,10 @@ class _PrinterSelectViewState extends State<PrinterSelectView> {
               );
             }),
         floatingActionButton: StreamBuilder<bool>(
-          stream: printerManager.isScanningStream,
+          stream: printerManager.isScanning,
           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

@@ -2,8 +2,8 @@ import 'dart:io';
 import 'dart:typed_data';
 
 import 'package:aman_kassa_flutter/core/models/dialog_models.dart';
+import 'package:aman_kassa_flutter/core/services/blue_print_service.dart';
 import 'package:aman_kassa_flutter/widgets/fields/busy_button_icon.dart';
-import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
 import 'package:aman_kassa_flutter/core/locator.dart';
 import 'package:aman_kassa_flutter/core/logger.dart';
 import 'package:aman_kassa_flutter/core/route_names.dart';
@@ -12,9 +12,6 @@ import 'package:aman_kassa_flutter/core/services/navigator_service.dart';
 import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
 import 'package:aman_kassa_flutter/redux/state/setting_state.dart';
 import 'package:aman_kassa_flutter/redux/store.dart';
-import 'package:aman_kassa_flutter/shared/app_colors.dart';
-import 'package:aman_kassa_flutter/widgets/fields/aman_icon_button_horizontal.dart';
-import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
 import 'package:esc_pos_utils/esc_pos_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:permission_handler/permission_handler.dart';
@@ -34,8 +31,7 @@ class SettingPrinterView extends StatefulWidget {
 class _SettingPrinterViewState extends State<SettingPrinterView> {
   NavigatorService _navigatorService = locator<NavigatorService>();
   final DialogService _dialogService = locator<DialogService>();
-  final PrinterBluetoothManager printerManager = PrinterBluetoothManager();
-  final BluetoothManager bluetoothManager = BluetoothManager.instance;
+  final BluePrintService printerManager = locator<BluePrintService>();
   final Logger log = getLogger('SettingPrinterView');
 
   bool _printing = false;
@@ -44,17 +40,30 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
   void initState() {
     super.initState();
     _permission();
-
+  }
+  @override
+  void dispose() {
+    disconnect();
+    super.dispose();
   }
 
+  disconnect() async {
+    await printerManager.disconnect();
+  }
 
   void _testPrint() async {
     setState(() {
       _printing = true;
     });
     try {
-      final SettingState state = Redux.store.state.settingState;
-      printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
+      final SettingState state = Redux.store!.state.settingState!;
+      printerManager.device = state.printerBT!;
+
+      await disconnect();
+      await Future.delayed(Duration(seconds: 1));
+
+      await printerManager.connect();
+      await Future.delayed(Duration(seconds: 3));
       bool isIos = Platform.isIOS;
       int chunkSizeBytes = 3096;
       int queueSleepTimeMs = 100;
@@ -68,34 +77,33 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
       log.i(queueSleepTimeMs);
 
       // TODO Don't forget to choose printer's paper
-      PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80 ? PaperSize.mm80 : PaperSize.mm58;
+      PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80
+          ? PaperSize.mm80
+          : PaperSize.mm58;
       if (SettingPrinterEncodingImage == state.printerEncoding) {
-        final PosPrintResult res = await printerManager.printTicket(
-            await testTicketImage(paper),
+        final bool res = await printerManager.printBytes(
+            Uint8List.fromList(await testTicketImage(paper)),
             chunkSizeBytes: chunkSizeBytes,
-            queueSleepTimeMs: queueSleepTimeMs
-        );
-        _dialogService.showDialog(description: res.msg);
+            queueSleepTimeMs: queueSleepTimeMs);
+        //_dialogService.showDialog(description: 'result is $res');
       } else {
-        final PosPrintResult res = await printerManager.printTicket(
-            await printTextCheck(paper, state.printerEncoding, exampleJson['check_text']),
+        final bool res = await printerManager.printBytes(
+            Uint8List.fromList(await printTextCheck(
+                paper, state.printerEncoding!, exampleJson['check_text'])),
             chunkSizeBytes: chunkSizeBytes,
-            queueSleepTimeMs: queueSleepTimeMs
-        );
-        _dialogService.showDialog(description: res.msg);
+            queueSleepTimeMs: queueSleepTimeMs);
+        //_dialogService.showDialog(description: 'result is $res');
       }
     } catch (e) {
       print('ERROR');
       print(e);
     }
-
-    //7 sec safe disconnect
-    await Future.delayed(Duration(seconds: 7));
+    //10 sec safe disconnect
+    await Future.delayed(Duration(seconds: 14));
 
     setState(() {
       _printing = false;
     });
-
   }
 
   @override
@@ -107,28 +115,32 @@ 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);
                       }),
                   SettingItem(
                       title: 'Ширина ленты',
-                      name: vm.printerPaperSize != null ? paperSize[vm.printerPaperSize] : null ,
+                      name: vm.printerPaperSize != null
+                          ? paperSize[vm.printerPaperSize]
+                          : null,
                       onTap: () {
                         _navigatorService.push(SettingsPrinterPaperRoute);
                       }),
@@ -144,9 +156,7 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
                             busy: _printing,
                             enabled: vm.printerBT != null,
                             onPressed: () {
-
                               _startInitialPrint();
-
                             },
                           ),
                         ],
@@ -163,24 +173,24 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
   //Метод для получения постоянного доступа к местополения
   //только для Android
   void _permission() async {
-    if( Platform.isAndroid) {
+    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.',
+          description:
+              'Для поиска устройств Bluetooth необходимо предоставить доступ к отслеживанию геолокации.',
           cancelTitle: 'Нет',
           confirmationTitle: 'Хорошо',
         );
         if (response.confirmed) {
-          if (await Permission.location
-              .request()
-              .isGranted) {
+          if (await Permission.location.request().isGranted) {
             print('Granted');
           } else {
             _dialogService.showDialog(
-                description: 'Необходимо указать постоянный доступ к местоположении для поиска принтера');
+                description:
+                    'Необходимо указать постоянный доступ к местоположении для поиска принтера');
             _navigatorService.pop();
           }
         } else {
@@ -192,22 +202,20 @@ class _SettingPrinterViewState extends State<SettingPrinterView> {
   }
 
   void _startInitialPrint() async {
-
-
     if (Platform.isIOS) {
-      await _testPrint();
+      _testPrint();
     } else {
-      bluetoothManager.state.listen((val) {
+      printerManager.state.listen((val) {
         print("state = $val");
         if (!mounted) return;
         if (val == 12) {
           print('on');
           _testPrint();
-
         } 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');
       });

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/flutter_screenutil.dart';
 
 
 class StartUpView extends StatefulWidget {
@@ -16,17 +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) {
-    //print(MediaQuery.of(context).size.width);
-    //print(MediaQuery.of(context).size.height);
-    //ScreenUtil.init(context, width: 411.43, height: 683.43, allowFontScaling: false);
-    //ScreenUtil.init(, designSize: Size(360, 690));
+
     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
-              last.num2 += value;
+            else if(last.num2 !=null) {
+              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.icon
+        required this.mainColor,
+        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,
-      this.onPressed,
+      {required this.title,
+      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>[