I have a requirement to show a little bit of copy for promotions which are applied to each line item in a given cart.

I feel like I am missing something obvious, this is the best I can come up with at present.

    var cart = this.orderRepository.LoadCart(contactId, DefaultCartType);

    var rewards = cart.ApplyDiscounts().ToList();

    var lineItemPromotions = rewards.SelectMany(x => x.Redemptions)
        .Select(x => x.AffectedEntries)
        .SelectMany(x => x.PriceEntries)
        .Select(x => new { x.ParentItem.LineItemId, x.Promotion.Name })
        .GroupBy(x => x.LineItemId)
        .ToDictionary(x => x.Key, y => y.Select(x => x.Name));

Can someone please inform me of a simpler way to get promotions which affect a given line item.