TF-228 Checking network status in the app

lib/features/base/base_controller.dart

@@ -1,9 +1,11 @@
+import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:core/core.dart';
 import 'package:dartz/dartz.dart';
 import 'package:get/get.dart';
 
 abstract class BaseController extends GetxController {
   final viewState = Rx<Either<Failure, Success>>(Right(UIState.idle));
+  final connectivityResult = Rxn<ConnectivityResult>();
 
   void consumeState(Stream<Either<Failure, Success>> newStateStream) async {
     log('BaseController::consumeState():');
@@ -18,6 +20,14 @@ abstract class BaseController extends GetxController {
     viewState.value = newState;
   }
 
+  void setNetworkConnectivityState(ConnectivityResult newConnectivityResult) {
+    connectivityResult.value = newConnectivityResult;
+  }
+
+  bool isNetworkConnectionAvailable() {
+    return connectivityResult.value != ConnectivityResult.none;
+  }
+
   void getState(Future<Either<Failure, Success>> newStateStream) async {
     final state = await newStateStream;
     state.fold(

lib/features/base/mixin/network_connection_mixin.dart

@@ -0,0 +1,33 @@
+
+import 'package:core/core.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:get/get.dart';
+import 'package:tmail_ui_user/main/localizations/app_localizations.dart';
+
+mixin NetworkConnectionMixin {
+
+  final _imagePaths = Get.find<ImagePaths>();
+
+  Widget buildNetworkConnectionWidget(BuildContext context) {
+    return Container(
+        decoration: BoxDecoration(
+            color: Colors.white,
+            borderRadius: BorderRadius.circular(16)),
+        width: 320,
+        margin: EdgeInsets.only(bottom: 100),
+        child: Material(
+            elevation: 8,
+            shape:  RoundedRectangleBorder(
+              borderRadius: BorderRadius.all(Radius.circular(16.0)),
+            ),
+            child: ListTile(
+                leading: SvgPicture.asset(_imagePaths.icNotConnection),
+                title: Text(
+                    AppLocalizations.of(context).no_internet_connection,
+                    style: TextStyle(fontSize: 15, color: Colors.black)),
+              )
+        )
+    );
+  }
+}