FoxTube/FoxTube.Core/Controllers/StoreInterop.cs

using System;
using System.Threading.Tasks;
using Windows.Services.Store;

namespace FoxTube.Core.Controllers
{
    public static class StoreInterop
    {
        public static bool AdsDisabled { get; private set; } = true;
        public static string Price { get; private set; }

        public static async Task UpdateStoreState()
        {
            StoreProductQueryResult requset = await StoreContext.GetDefault().GetAssociatedStoreProductsAsync(new[] { "Durable" });

            if (requset.Products["9NP1QK556625"].IsInUserCollection)
                return;

            Price = requset.Products["9NP1QK556625"].Price.FormattedPrice;
            AdsDisabled = false;
        }

        public static async Task<bool> PurchaseApp()
        {
            StorePurchaseResult request = await StoreContext.GetDefault().RequestPurchaseAsync("9NP1QK556625");

            switch (request.Status)
            {
                case StorePurchaseStatus.AlreadyPurchased:
                case StorePurchaseStatus.Succeeded:
                    AdsDisabled = true;
                    return true;
                default:
                    return false;
            }
        }
    }
}