From 303da3753dabcad734587d5b72584b95be8de200 Mon Sep 17 00:00:00 2001
From: Garry Newman <garrynewman@gmail.com>
Date: Fri, 9 Jun 2017 10:30:43 +0100
Subject: [PATCH] Microtransaction callback (requested, but untested)

---
 Facepunch.Steamworks/Client.cs                | 10 +++++
 .../Client/MicroTransactions.cs               | 44 +++++++++++++++++++
 2 files changed, 54 insertions(+)
 create mode 100644 Facepunch.Steamworks/Client/MicroTransactions.cs

diff --git a/Facepunch.Steamworks/Client.cs b/Facepunch.Steamworks/Client.cs
index d5694ef..9b49fbc 100644
--- a/Facepunch.Steamworks/Client.cs
+++ b/Facepunch.Steamworks/Client.cs
@@ -58,6 +58,7 @@ public partial class Client : BaseSteamworks
         public App App { get; private set; }
         public Achievements Achievements { get; private set; }
         public Stats Stats { get; private set; }
+        public MicroTransactions MicroTransactions { get; private set; }
 
         public Client( uint appId )
         {
@@ -87,6 +88,7 @@ public Client( uint appId )
             App = new App( this );
             Stats = new Stats( this );
             Achievements = new Achievements( this );
+            MicroTransactions = new MicroTransactions( this );
 
             Workshop.friends = Friends;
 
@@ -105,6 +107,8 @@ public Client( uint appId )
             CurrentLanguage = native.apps.GetCurrentGameLanguage();
             AvailableLanguages = native.apps.GetAvailableGameLanguages().Split( new[] {';'}, StringSplitOptions.RemoveEmptyEntries ); // TODO: Assumed colon separated
 
+            
+
             //
             // Run update, first call does some initialization
             //
@@ -168,6 +172,12 @@ public override void Dispose()
                 Achievements = null;
             }
 
+            if ( MicroTransactions != null )
+            {
+                MicroTransactions.Dispose();
+                MicroTransactions = null;
+            }
+
             if ( Instance == this )
             {
                 Instance = null;
diff --git a/Facepunch.Steamworks/Client/MicroTransactions.cs b/Facepunch.Steamworks/Client/MicroTransactions.cs
new file mode 100644
index 0000000..d2176c8
--- /dev/null
+++ b/Facepunch.Steamworks/Client/MicroTransactions.cs
@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using SteamNative;
+
+namespace Facepunch.Steamworks
+{
+    public class MicroTransactions : IDisposable
+    {
+        internal Client client;
+
+        public delegate void AuthorizationResponse( bool authorized, int appId, ulong orderId );
+
+        /// <summary>
+        /// Called on the MicroTxnAuthorizationResponse_t event
+        /// </summary>
+        public event AuthorizationResponse OnAuthorizationResponse;
+
+        internal MicroTransactions( Client c )
+        {
+            client = c;
+
+            SteamNative.MicroTxnAuthorizationResponse_t.RegisterCallback( client, onMicroTxnAuthorizationResponse );
+        }
+
+        private void onMicroTxnAuthorizationResponse( MicroTxnAuthorizationResponse_t arg1, bool arg2 )
+        {
+            if ( OnAuthorizationResponse  != null )
+            {
+                OnAuthorizationResponse( arg1.Authorized == 1, (int) arg1.AppID, arg1.OrderID );
+            }
+
+            throw new NotImplementedException();
+        }
+
+        public void Dispose()
+        {
+            client = null;
+        }
+    }
+}