Merge pull request #138 from xADDBx/WrathNexusPremiumDL

Author: CasDragon

ModFinderClient/MainWindow.xaml.cs

@@ -52,6 +52,9 @@ public MainWindow()
 
         Window = this;
 
+        // Force Init; Start Verification Request
+        _ = Main.Settings;
+
         CheckForUpdate();
 
         installedMods.DataContext = ModDB;
@@ -880,6 +883,7 @@ private async void TryAquireNexusAPIKeyAsync()
             {
               var bytes = Encoding.UTF8.GetBytes(key);
               Main.Settings.NexusApiKeyBytes = ProtectedData.Protect(bytes, null, DataProtectionScope.CurrentUser);
+              Main.Settings.IsKeyActuallyPremium = true;
               Main.Settings.Save();
             }
             else

ModFinderClient/Util/Settings.cs

@@ -1,5 +1,8 @@
-using System.Security.Cryptography;
+using Newtonsoft.Json;
+using NexusModsNET;
+using System.Security.Cryptography;
 using System.Text;
+using System.Threading.Tasks;
 
 namespace ModFinder.Util
 {
@@ -8,7 +11,10 @@ public class Settings
     public string AutoWrathPath { get; set; }
     public string WrathPath { get; set; }
     public byte[] NexusApiKeyBytes { get; set; }
-    public string MaybeGetNexusKey()
+
+    [JsonIgnore]
+    internal bool? IsKeyActuallyPremium;
+    private string GetPlainNexusKey()
     {
       if (NexusApiKeyBytes == null)
       {
@@ -17,16 +23,30 @@ public string MaybeGetNexusKey()
       var plain = ProtectedData.Unprotect(NexusApiKeyBytes, null, DataProtectionScope.CurrentUser);
       return Encoding.UTF8.GetString(plain);
     }
+    public string MaybeGetNexusKey()
+    {
+      if (!IsKeyActuallyPremium.HasValue || !IsKeyActuallyPremium.Value)
+      {
+        return null;
+      }
+      return GetPlainNexusKey();
+    }
 
     private static Settings _Instance;
     public static Settings Load()
     {
       if (_Instance == null)
       {
         if (Main.TryReadFile("Settings.json", out var settingsRaw))
+        {
           _Instance = IOTool.FromString<Settings>(settingsRaw);
+          Task.Run(_Instance.VerifyNexusPremium);
+        }
         else
+        {
           _Instance = new();
+          _Instance.Save();
+        }
       }
 
       return _Instance;
@@ -39,5 +59,16 @@ public void Save()
         IOTool.Write(this, Main.AppPath("Settings.json"));
       });
     }
+
+    internal async void VerifyNexusPremium()
+    {
+      var maybeKey = GetPlainNexusKey();
+      if (maybeKey != null)
+      {
+        var client = NexusModsFactory.New(maybeKey, "Modfinder", Main.ProductVersion);
+        var user = await client.CreateUserInquirer().GetUserAsync();
+        IsKeyActuallyPremium = user.IsPremium;
+      }
+    }
   }
 }