pointMaster/pointMaster/Controllers/HeaderNavController.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using System.Security.Claims;

namespace pointMaster.Controllers
{
    public class HeaderNav : ViewComponent
    {
        private readonly IAuthorizationService authorizationService;

        public HeaderNav(IAuthorizationService authorizationService)
        {
            this.authorizationService = authorizationService;
        }

        public IViewComponentResult Invoke()
        {
            var vm = new HeaderNavViewModel();

            vm.links = new List<NavUrl>();

            if (HttpContext.User.Claims.FirstOrDefault(x => x.Value == Roles.Editor) != null)
            {
                vm.links.Add(new NavUrl("Patruljer", "/Patrulje"));
                vm.links.Add(new NavUrl("Point", "/Point"));
                vm.links.Add(new NavUrl("Poster", "/Poster"));
            }

            if (User.Identity.IsAuthenticated)
            {
                vm.links.Add(new NavUrl("Giv point", "/point/givpoint"));
                vm.links.Add(new NavUrl("Log ud", "/account/signout"));
            }
            else
            {
                vm.links.Add(new NavUrl("Log ind", "/account/signin"));
            }

            return View(vm);
        }
    }

    public class HeaderNavViewModel
    {
        public List<NavUrl> links { get; set; } = null!;
    }
    public class NavUrl {
        public NavUrl() { }
        public NavUrl(string title, string url)
        {
            this.Title = title;
            this.Url = url;
        }
        public string Url { get; set; } = null!;
        public string Title { get; set; } = null!;
    }
}