CustomItemAuthorizationHelper.cs

namespace Feature.Providers.ItemAccessibility
{
    public class CustomItemAuthorizationHelper : ItemAuthorizationHelper
    {
        private static readonly List<Func<Item, Account, AccessResult, AccessResult>> GetItemAccessChecks = new List<Func<Item, Account, AccessResult, AccessResult>>
        {
            GetProductItemAccess,
            GetProductFamilyItemAccess,
            GetProductCategoryItemAccess
        };

        public CustomItemAuthorizationHelper(
            BaseAccessRightManager accessRightManager,
            BaseRolesInRolesManager rolesInRolesManager,
            BaseItemManager itemManager) : base(accessRightManager, rolesInRolesManager, itemManager) {}

        /// <summary>
        /// It's only called if the AccessResult is not found yet in the AccessResultCache
        /// </summary>
        protected override AccessResult GetItemAccess(Item item, Account account, AccessRight accessRight, PropagationType propagationType)
        {
            var originalAccessResult = base.GetItemAccess(item, account, accessRight, propagationType);
            var accessResult = originalAccessResult;
            foreach (var check in GetItemAccessChecks)
            {
                accessResult = check.Invoke(item, account, accessResult);
            }

            return accessResult;
        }

        private static AccessResult GetProductItemAccess(Item item, Account account, AccessResult previousAccessResult)
        {
            // Insert custom logic here
            return new AccessResult(AccessPermission.Allow, new AccessExplanation($"Use meaningful a explanation."));
        }

        private static AccessResult GetProductFamilyItemAccess(Item item, Account account, AccessResult previousAccessResult)
        {
            // Insert custom logic here
            return new AccessResult(AccessPermission.Allow, new AccessExplanation($"Use meaningful a explanation."));;
        }

        private static AccessResult GetProductCategoryItemAccess(Item item, Account account, AccessResult previousAccessResult)
        {
            // Insert custom logic here
            return new AccessResult(AccessPermission.Allow, new AccessExplanation($"Use meaningful a explanation."));
        }
    }
}