CslaAuthenticationStateProvider.cs

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using System.Threading.Tasks;
using Microsoft.AspNetCore.Components.Authorization;
 
namespace Csla.Blazor.Client.Authentication
{
  public class CslaAuthenticationStateProvider : AuthenticationStateProvider
  {
    private readonly CslaUserService _currentUserService;
 
    public CslaAuthenticationStateProvider(CslaUserService currentUserService)
    {
      _currentUserService = currentUserService;
      _currentUserService.CurrentUserChanged += (sender, e) =>
      {
        var authState = Task.FromResult(new AuthenticationState(e.NewUser));
        NotifyAuthenticationStateChanged(authState);
      };
    }
 
    public override Task<AuthenticationState> GetAuthenticationStateAsync()
    {
      return Task.FromResult(new AuthenticationState(_currentUserService.CurrentUser));
    }
  }
}