refactor: update IdentityService to use Application layer abstractions and constants

src/NexusReader.UI.Shared/Services/IdentityService.cs

@@ -2,36 +2,11 @@ using System.Net.Http.Json;
 using Microsoft.AspNetCore.Components.Authorization;
 using NexusReader.Application.Abstractions.Services;
 using NexusReader.Application.DTOs.User;
-using NexusReader.UI.Shared.Constants;
+using NexusReader.Application.Constants;
 using FluentResults;
 
 namespace NexusReader.UI.Shared.Services;
 
-public interface IIdentityService
-{
-    event Func<Task>? OnStateInvalidated;
-    Task<Result> RegisterAsync(string email, string password);
-    Task<Result> LoginAsync(string email, string password, bool rememberMe = false);
-    Task<Result> LogoutAsync();
-    Task<Result<UserProfile>> GetProfileAsync();
-    Task<Result> RefreshTokenAsync();
-}
-
-public record UserProfile(
-    string Email,
-    int AITokensUsed,
-    Guid TenantId,
-    SubscriptionPlanDto Plan,
-    int AverageQuizScore,
-    LastReadBookDto? LastReadBook,
-    string[] Roles)
-{
-    // Helper properties for UI compatibility
-    public string CurrentPlan => Plan?.Name ?? PlanConstants.DefaultPlanName;
-    public int AITokenLimit => Plan?.AITokenLimit ?? PlanConstants.DefaultTokenLimit;
-    public string LastReadBookTitle => LastReadBook?.Title ?? PlanConstants.DefaultActivityLabel;
-}
-
 public class IdentityService : IIdentityService
 {
     private readonly HttpClient _httpClient;
@@ -39,8 +14,8 @@ public class IdentityService : IIdentityService
     private readonly AuthenticationStateProvider? _authStateProvider;
     private const string TokenKey = StorageKeys.AuthToken;
     private const string RefreshTokenKey = StorageKeys.RefreshToken;
-    private Task<UserProfile?>? _profileTask;
-    private UserProfile? _cachedProfile;
+    private Task<UserProfileDto?>? _profileTask;
+    private UserProfileDto? _cachedProfile;
     private DateTime _lastFetchAttempt = DateTime.MinValue;
 
     public event Func<Task>? OnStateInvalidated;
@@ -152,7 +127,7 @@ public class IdentityService : IIdentityService
         }
     }
     
-    public async Task<Result<UserProfile>> GetProfileAsync()
+    public async Task<Result<UserProfileDto>> GetProfileAsync()
     {
         if (_cachedProfile != null) 
         {
@@ -172,7 +147,7 @@ public class IdentityService : IIdentityService
 
 
 
-    private async Task<UserProfile?> GetProfileInternalAsync()
+    private async Task<UserProfileDto?> GetProfileInternalAsync()
     {
         if (!System.OperatingSystem.IsBrowser()) 
         {
@@ -197,7 +172,7 @@ public class IdentityService : IIdentityService
 
             if (response.IsSuccessStatusCode)
             {
-                var profile = await response.Content.ReadFromJsonAsync<UserProfile>();
+                var profile = await response.Content.ReadFromJsonAsync<UserProfileDto>();
                 if (profile != null)
                 {
                     _cachedProfile = profile;