Starting updating mooncore dependency usage

Moonlight.Client/UI/Views/Index.razor

@@ -1,14 +1,26 @@
 @page "/"
 
-@using Moonlight.Client.Services
-
-@inject IdentityService IdentityService
+@using Microsoft.AspNetCore.Components.Authorization
 
 <div class="font-medium leading-[1.1] tracking-tight">
     <div class="animate-shimmer bg-gradient-to-r from-violet-400 via-sky-400 to-purple-400 bg-clip-text font-semibold text-transparent text-3xl" style="animation-duration: 5s; background-size: 200% 100%">
-        Welcome, @(IdentityService.Username)
+        Welcome, @(Username)
     </div>
     <div class="text-gray-200 text-2xl">What do you want to do today?</div>
 </div>
 
-<div class="text-primary-500/10"></div>
+<div class="text-primary-500/10"></div>
+
+@code
+{
+    [CascadingParameter] public Task<AuthenticationState> AuthState { get; set; }
+    
+    private string Username;
+
+    protected override async Task OnInitializedAsync()
+    {
+        var identity = await AuthState;
+        var usernameClaim = identity.User.Claims.ToArray().First(x => x.Type == "username");
+        Username = usernameClaim.Value;
+    }
+}