refactor: unify UserProfileDto and add plan helpers

src/NexusReader.Application/DTOs/User/UserProfileDto.cs

@@ -1,24 +1,32 @@
+using NexusReader.Application.Constants;
+
 namespace NexusReader.Application.DTOs.User;
 
 public record UserProfileDto
 {
     public string Email { get; init; } = string.Empty;
-    public int AITokensUsed { get; init; }
     public Guid TenantId { get; init; }
-    
-    /// <summary>
-    /// Relational data for the current subscription plan.
-    /// </summary>
     public SubscriptionPlanDto Plan { get; init; } = new();
-
+    public int AITokensUsed { get; init; }
-    public int AverageQuizScore { get; init; }
+    public string[] Roles { get; init; } = Array.Empty<string>();
     
-    /// <summary>
+    // Statistics for Dashboard
-    /// Summary of the last read book.
+    public int TotalBooksRead { get; init; }
-    /// </summary>
+    public int AverageQuizScore { get; init; }
     public LastReadBookDto? LastReadBook { get; init; }
 
-    public string[] Roles { get; init; } = Array.Empty<string>();
+    // UI Helpers
+    public string CurrentPlan => Plan.Name ?? PlanConstants.Free;
+    public int AITokenLimit => Plan.AITokenLimit > 0 ? Plan.AITokenLimit : PlanConstants.GetTokenLimit(CurrentPlan);
+    public string LastReadBookTitle => LastReadBook?.Title ?? "Brak aktywności";
+}
+
+public record SubscriptionPlanDto
+{
+    public int Id { get; init; }
+    public string Name { get; init; } = string.Empty;
+    public int AITokenLimit { get; init; }
+    public decimal MonthlyPrice { get; init; }
 }
 
 public record LastReadBookDto
@@ -27,7 +35,13 @@ public record LastReadBookDto
     public string Title { get; init; } = string.Empty;
     public AuthorDto Author { get; init; } = new();
     public string? CoverUrl { get; init; }
-    public double Progress { get; init; }
+    public int Progress { get; init; }
-    public string? LastChapter { get; init; }
+    public string LastChapter { get; init; } = string.Empty;
     public int LastChapterIndex { get; init; }
 }
+
+public record AuthorDto
+{
+    public Guid Id { get; init; }
+    public string Name { get; init; } = string.Empty;
+}