mixtape/zero.Core/Extensions/BackofficeUserExtensions.cs

using System.Collections.Generic;
using System.Linq;
using zero.Core.Entities;
using zero.Core.Identity;

namespace zero.Core.Extensions
{
  public static class BackofficeUserExtensions
  {
    public static string[] GetAllowedAppIds(this BackofficeUser user)
    {
      if (user == null)
      {
        return new string[0] { };
      }

      IEnumerable<Permission> permissions = user.Claims
        .Where(claim => claim.Type == Constants.Auth.Claims.Permission && claim.Value.StartsWith(Permissions.Applications))
        .Select(x => Permission.FromClaim(x.ToClaim(), Permissions.Applications));

      return permissions.Where(x => x.IsTrue).Select(x => x.NormalizedKey).ToArray();
    }
  }
}