Bugfix to buttons not working when there's only one item, and buy db query

src/NadekoBot/Common/Interaction/SimpleInteraction.cs

@@ -0,0 +1,20 @@
+namespace NadekoBot;
+
+public class SimpleInteraction<T>
+{
+    public ButtonBuilder Button { get; }
+    private readonly Func<SocketMessageComponent, T, Task> _onClick;
+    private readonly T? _state;
+
+    public SimpleInteraction(ButtonBuilder button, Func<SocketMessageComponent, T?, Task> onClick, T? state = default)
+    {
+        Button = button;
+        _onClick = onClick;
+        _state = state;
+    }
+
+    public async Task TriggerAsync(SocketMessageComponent smc)
+    {
+        await _onClick(smc, _state!);
+    }
+}

src/NadekoBot/Modules/Xp/Xp.cs

@@ -473,22 +473,3 @@ public partial class Xp : NadekoModule<XpService>
         return GetText(strs.xpn_notif_disabled);
     }
 }
-
-public class SimpleInteraction<T>
-{
-    public ButtonBuilder Button { get; }
-    private readonly Func<SocketMessageComponent, T, Task> _onClick;
-    private readonly T? _state;
-
-    public SimpleInteraction(ButtonBuilder button, Func<SocketMessageComponent, T?, Task> onClick, T state = default)
-    {
-        Button = button;
-        _onClick = onClick;
-        _state = state;
-    }
-
-    public async Task TriggerAsync(SocketMessageComponent smc)
-    {
-        await _onClick(smc, _state);
-    }
-}

src/NadekoBot/Modules/Xp/XpService.cs

@@ -1337,7 +1337,7 @@ public class XpService : INService, IReadyExecutor, IExecNoCommand
         // await using var tran = await ctx.Database.BeginTransactionAsync();
         try
         {
-            if (await ctx.GetTable<XpShopOwnedItem>().AnyAsyncLinqToDB(x => x.ItemKey == key && x.ItemType == type))
+            if (await ctx.GetTable<XpShopOwnedItem>().AnyAsyncLinqToDB(x => x.UserId == userId && x.ItemKey == key && x.ItemType == type))
                 return BuyResult.AlreadyOwned;
 
             var item = GetShopItem(type, key);

src/NadekoBot/_Extensions/IMessageChannelExtensions.cs

@@ -314,7 +314,7 @@ public static class MessageChannelExtensions
             }
         }
 
-        if (lastPage == 0)
+        if (lastPage == 0 && interFactory is null)
             return;
 
         var client = (DiscordSocketClient)ctx.Client;