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SecureBank.Website/SecureBank.Website.Authentication/AuthenticationHelper.cs

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+using Blazored.SessionStorage;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SecureBank.Website.Authentication
+{
+    public class AuthenticationHelper
+    {
+        #region CONSTANTS
+
+        private const string TOKEN_KEY = "token";
+
+        #endregion
+
+
+
+        #region SERVICES
+
+        private readonly ISessionStorageService _sessionStorageService;
+
+        #endregion
+
+
+
+        #region CONSTRUCTIONS
+
+        public AuthenticationHelper(ISessionStorageService sessionStorageService)
+        {
+            _sessionStorageService = sessionStorageService;
+        }
+
+        #endregion
+
+
+
+        #region PUBLIC METHODS
+
+        public async Task<string> GetToken() => await _sessionStorageService.GetItemAsync<string>(TOKEN_KEY);
+
+        public async Task SaveToken(string token) => await _sessionStorageService.SetItemAsync(TOKEN_KEY, token);
+
+        public async Task RemoveToken() => await _sessionStorageService.RemoveItemAsync(TOKEN_KEY);
+
+        #endregion
+    }
+}

SecureBank.Website/SecureBank.Website.Authentication/SecureBank.Website.Authentication.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Blazored.SessionStorage" Version="2.4.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.Authorization" Version="8.0.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\SecureBank.Helpers\SecureBank.Helpers.csproj" />
+    <ProjectReference Include="..\SecureBank.Website.Services\SecureBank.Website.Services.csproj" />
+  </ItemGroup>
+
+</Project>

SecureBank.Website/SecureBank.Website.Authentication/TokenAuthenticationStateProvider.cs

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+using Microsoft.AspNetCore.Components.Authorization;
+using SecureBank.Common;
+using SecureBank.Website.Services;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Http.Headers;
+using System.Security.Claims;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SecureBank.Website.Authentication
+{
+    public class TokenAuthenticationStateProvider : AuthenticationStateProvider
+    {
+        #region SERVICES
+
+        private readonly IAccountsService _accountsService;
+
+        private readonly AuthenticationHelper _authenticationHelper;
+
+        private readonly HttpClient _httpClient;
+
+        #endregion
+
+
+
+        #region CONSTRUCTORS
+
+        public TokenAuthenticationStateProvider(IAccountsService accountsService, AuthenticationHelper authenticationHelper, HttpClient httpClient) 
+        { 
+            _accountsService = accountsService;
+            _authenticationHelper = authenticationHelper;
+            _httpClient = httpClient;
+        }
+
+        #endregion
+
+
+
+        #region PUBLIC METHODS
+
+        public override async Task<AuthenticationState> GetAuthenticationStateAsync()
+        {
+            _httpClient.DefaultRequestHeaders.Authorization = null;
+            AuthenticationState state = new AuthenticationState(new ClaimsPrincipal());
+
+            string token = await _authenticationHelper.GetToken();
+
+            if (string.IsNullOrWhiteSpace(token))
+            {
+                return state;
+            }
+
+            _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+
+            APIResponse<string> refreshResponse = await _accountsService.AuthenticationRefresh();
+
+            if (!refreshResponse.Success)
+            {
+                _httpClient.DefaultRequestHeaders.Authorization = null;
+                return state;
+            }
+
+            token = refreshResponse.Data;
+
+            _httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token);
+            state = new AuthenticationState(new ClaimsPrincipal()); //TODO: Add claims
+
+            return state;
+        }
+
+        #endregion
+    }
+}