Updated StoreInterop class and ads appearing conditions

FoxTube.Core/Controllers/StoreInterop.cs

@@ -1,24 +1,38 @@
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
 using System.Threading.Tasks;
+using Windows.Services.Store;
 
 namespace FoxTube.Core.Controllers
 {
     public static class StoreInterop
     {
-        public static bool AdsDisabled => false;
-        public static string GetProPrice()
+        public static bool AdsDisabled { get; private set; } = true;
+        public static string Price { get; private set; }
+
+        public static async Task UpdateStoreState()
         {
-            return "$4.99";
+            StoreProductQueryResult requset = await StoreContext.GetDefault().GetAssociatedStoreProductsAsync(new[] { "Durable" });
+
+            if (requset.Products["9NP1QK556625"].IsInUserCollection)
+                return;
+
+            Price = requset.Products["9NP1QK556625"].Price.FormattedPrice;
+            AdsDisabled = false;
         }
 
-        public static void PurchaseApp()
+        public static async Task<bool> PurchaseApp()
         {
-            if (!AdsDisabled)
-                // TODO: Add purchase validation
-                return;
+            StorePurchaseResult request = await StoreContext.GetDefault().RequestPurchaseAsync("9NP1QK556625");
+
+            switch (request.Status)
+            {
+                case StorePurchaseStatus.AlreadyPurchased:
+                case StorePurchaseStatus.Succeeded:
+                    AdsDisabled = true;
+                    return true;
+                default:
+                    return false;
+            }
         }
     }
 }