From 8b8d1ca74ce9addba75e65153e771111a6726b5b Mon Sep 17 00:00:00 2001
From: karashiiro <49822414+karashiiro@users.noreply.github.com>
Date: Wed, 23 Jun 2021 10:31:15 -0700
Subject: [PATCH] Implement market board purchase message reading Originally
 from
 https://github.com/Aireil/Dalamud/commit/d85146c0d9c911634228ee00bd2bf2eed9c8fb52

---
 Dalamud/Game/Network/NetworkHandlers.cs       | 40 +++++++++++--
 .../Network/Structures/MarketBoardPurchase.cs | 40 +++++++++++++
 .../Structures/MarketBoardPurchaseHandler.cs  | 57 +++++++++++++++++++
 3 files changed, 132 insertions(+), 5 deletions(-)
 create mode 100644 Dalamud/Game/Network/Structures/MarketBoardPurchase.cs
 create mode 100644 Dalamud/Game/Network/Structures/MarketBoardPurchaseHandler.cs

diff --git a/Dalamud/Game/Network/NetworkHandlers.cs b/Dalamud/Game/Network/NetworkHandlers.cs
index 790ed57d5..c918d8b83 100644
--- a/Dalamud/Game/Network/NetworkHandlers.cs
+++ b/Dalamud/Game/Network/NetworkHandlers.cs
@@ -15,7 +15,7 @@ using Serilog;
 namespace Dalamud.Game.Network
 {
     /// <summary>
-    /// This class handles network notifications and uploading Marketboard data.
+    /// This class handles network notifications and uploading market board data.
     /// </summary>
     public class NetworkHandlers
     {
@@ -23,6 +23,8 @@ namespace Dalamud.Game.Network
 
         private readonly List<MarketBoardItemRequest> marketBoardRequests = new();
 
+        private MarketBoardPurchaseHandler marketBoardPurchaseHandler;
+
         private readonly bool optOutMbUploads;
         private readonly IMarketBoardUploader uploader;
 
@@ -30,7 +32,7 @@ namespace Dalamud.Game.Network
         /// Initializes a new instance of the <see cref="NetworkHandlers"/> class.
         /// </summary>
         /// <param name="dalamud">The Dalamud instance.</param>
-        /// <param name="optOutMbUploads">Whether the client should opt out of marketboard uploads.</param>
+        /// <param name="optOutMbUploads">Whether the client should opt out of market board uploads.</param>
         public NetworkHandlers(Dalamud dalamud, bool optOutMbUploads)
         {
             this.dalamud = dalamud;
@@ -48,12 +50,22 @@ namespace Dalamud.Game.Network
 
         private void OnNetworkMessage(IntPtr dataPtr, ushort opCode, uint sourceActorId, uint targetActorId, NetworkMessageDirection direction)
         {
-            if (direction != NetworkMessageDirection.ZoneDown)
-                return;
-
             if (!this.dalamud.Data.IsDataReady)
                 return;
 
+            if (direction == NetworkMessageDirection.ZoneUp)
+            {
+                if (!this.optOutMbUploads)
+                {
+                    if (opCode == this.dalamud.Data.ClientOpCodes["MarketBoardPurchaseHandler"])
+                    {
+                        this.marketBoardPurchaseHandler = MarketBoardPurchaseHandler.Read(dataPtr);
+                    }
+                }
+
+                return;
+            }
+
             if (opCode == this.dalamud.Data.ServerOpCodes["CfNotifyPop"])
             {
                 var data = new byte[64];
@@ -256,6 +268,24 @@ namespace Dalamud.Game.Network
                         Log.Error(ex, "Market Board data upload failed.");
                     }
                 }
+
+                if (opCode == this.dalamud.Data.ServerOpCodes["MarketBoardPurchase"])
+                {
+                    if (this.marketBoardPurchaseHandler == null)
+                        return;
+
+                    var purchase = MarketBoardPurchase.Read(dataPtr);
+
+                    // Transaction succeeded
+                    if (purchase.ItemQuantity == this.marketBoardPurchaseHandler.ItemQuantity
+                        && (purchase.CatalogId == this.marketBoardPurchaseHandler.CatalogId
+                            || purchase.CatalogId == this.marketBoardPurchaseHandler.CatalogId + 1000000))
+                    { // HQ
+                        Log.Information("Bought " + purchase.ItemQuantity + "x " + this.marketBoardPurchaseHandler.CatalogId + " for " + (this.marketBoardPurchaseHandler.PricePerUnit * purchase.ItemQuantity) + " gils, listing id is " + this.marketBoardPurchaseHandler.ListingId);
+                    }
+
+                    this.marketBoardPurchaseHandler = null;
+                }
             }
         }
     }
diff --git a/Dalamud/Game/Network/Structures/MarketBoardPurchase.cs b/Dalamud/Game/Network/Structures/MarketBoardPurchase.cs
new file mode 100644
index 000000000..ed8051154
--- /dev/null
+++ b/Dalamud/Game/Network/Structures/MarketBoardPurchase.cs
@@ -0,0 +1,40 @@
+using System;
+using System.IO;
+
+namespace Dalamud.Game.Network.Structures
+{
+    /// <summary>
+    /// Represents market board purchase information. This message is received from the
+    /// server when a purchase is made at a market board.
+    /// </summary>
+    internal class MarketBoardPurchase
+    {
+        /// <summary>
+        /// Gets the item ID of the item that was purchased.
+        /// </summary>
+        public uint CatalogId { get; private set; }
+
+        /// <summary>
+        /// Gets the quantity of the item that was purchased.
+        /// </summary>
+        public uint ItemQuantity { get; private set; }
+
+        /// <summary>
+        /// Reads market board purchase information from the struct at the provided pointer.
+        /// </summary>
+        /// <param name="dataPtr">A pointer to a struct containing market board purchase information from the server.</param>
+        /// <returns>An object representing the data read.</returns>
+        public static unsafe MarketBoardPurchase Read(IntPtr dataPtr)
+        {
+            var output = new MarketBoardPurchase();
+
+            using var stream = new UnmanagedMemoryStream((byte*)dataPtr.ToPointer(), 1544);
+            using var reader = new BinaryReader(stream);
+            output.CatalogId = reader.ReadUInt32();
+            stream.Position += 4;
+            output.ItemQuantity = reader.ReadUInt32();
+
+            return output;
+        }
+    }
+}
diff --git a/Dalamud/Game/Network/Structures/MarketBoardPurchaseHandler.cs b/Dalamud/Game/Network/Structures/MarketBoardPurchaseHandler.cs
new file mode 100644
index 000000000..98d7007b0
--- /dev/null
+++ b/Dalamud/Game/Network/Structures/MarketBoardPurchaseHandler.cs
@@ -0,0 +1,57 @@
+using System;
+using System.IO;
+
+namespace Dalamud.Game.Network.Structures
+{
+    /// <summary>
+    /// Represents market board purchase information. This message is sent from the
+    /// client when a purchase is made at a market board.
+    /// </summary>
+    internal class MarketBoardPurchaseHandler
+    {
+        /// <summary>
+        /// Gets the object ID of the retainer associated with the sale.
+        /// </summary>
+        public ulong RetainerId { get; private set; }
+
+        /// <summary>
+        /// Gets the object ID of the item listing.
+        /// </summary>
+        public ulong ListingId { get; private set; }
+
+        /// <summary>
+        /// Gets the item ID of the item that was purchased.
+        /// </summary>
+        public uint CatalogId { get; private set; }
+
+        /// <summary>
+        /// Gets the quantity of the item that was purchased.
+        /// </summary>
+        public uint ItemQuantity { get; private set; }
+
+        /// <summary>
+        /// Gets the unit price of the item.
+        /// </summary>
+        public uint PricePerUnit { get; private set; }
+
+        /// <summary>
+        /// Reads market board purchase information from the struct at the provided pointer.
+        /// </summary>
+        /// <param name="dataPtr">A pointer to a struct containing market board purchase information from the client.</param>
+        /// <returns>An object representing the data read.</returns>
+        public static unsafe MarketBoardPurchaseHandler Read(IntPtr dataPtr)
+        {
+            var output = new MarketBoardPurchaseHandler();
+
+            using var stream = new UnmanagedMemoryStream((byte*)dataPtr.ToPointer(), 1544);
+            using var reader = new BinaryReader(stream);
+            output.RetainerId = reader.ReadUInt64();
+            output.ListingId = reader.ReadUInt64();
+            output.CatalogId = reader.ReadUInt32();
+            output.ItemQuantity = reader.ReadUInt32();
+            output.PricePerUnit = reader.ReadUInt32();
+
+            return output;
+        }
+    }
+}