From 511c623dd6c9207cc3b6b373b2f6c89357f80a9e Mon Sep 17 00:00:00 2001
From: Kyle873 <kyle873@gmail.com>
Date: Fri, 26 May 2023 03:49:47 -0400
Subject: [PATCH] Namespace refactor, basic Impl for PacketHandlers

---
 Gameserver/Packet.cs  | 55 ++++++++++++++++++++++++++++++++++++++++++-
 Gameserver/Server.cs  |  7 +++---
 Gameserver/Session.cs |  3 +--
 Program.cs            |  3 ++-
 4 files changed, 61 insertions(+), 7 deletions(-)

diff --git a/Gameserver/Packet.cs b/Gameserver/Packet.cs
index 1385368..73cc2e6 100644
--- a/Gameserver/Packet.cs
+++ b/Gameserver/Packet.cs
@@ -3,8 +3,9 @@ using Common.Resources.Proto;
 using Newtonsoft.Json;
 using Common.Utils;
 using ProtoBuf;
+using System.Reflection;
 
-namespace PemukulPaku.Gameserver
+namespace PemukulPaku.GameServer
 {
     public class Packet
     {
@@ -47,4 +48,56 @@ namespace PemukulPaku.Gameserver
             }
         }
     }
+
+    public class PacketCmdId : Attribute
+    {
+        public CmdId Id { get; }
+
+        public PacketCmdId(CmdId id)
+        {
+            Id = id;
+        }
+    }
+
+    public interface IPacketHandler
+    {
+        public void Handle(Session session, Packet packet);
+    }
+
+    public static class PacketFactory
+    {
+        public static readonly Dictionary<CmdId, IPacketHandler> Handlers = new();
+        static readonly Logger c = new("PKT", ConsoleColor.Yellow);
+
+        public static void LoadPacketHandlers()
+        {
+            c.Log("Loading Packet Handlers...");
+
+            IEnumerable<Type> classes = from t in Assembly.GetExecutingAssembly().GetTypes()
+                                        select t;
+
+            foreach ((Type t, PacketCmdId attr) in from Type? t in classes.ToList()
+                                                   let attrs = (Attribute[])t.GetCustomAttributes(typeof(PacketCmdId), false)
+                                                   where attrs.Length > 0
+                                                   let attr = (PacketCmdId)attrs[0]
+                                                   where !Handlers.ContainsKey(attr.Id)
+                                                   select (t, attr))
+            {
+                Handlers.Add(attr.Id, (IPacketHandler)Activator.CreateInstance(t));
+
+                c.Log($"Loaded PacketHandler {t.Name} for Packet Type {attr.Id}");
+            }
+
+            c.Log("Finished Loading Packet Handlers");
+        }
+    }
+
+    [PacketCmdId(CmdId.PlayerLoginReq)]
+    public class PlayerLoginReqHandler : IPacketHandler
+    {
+        public void Handle(Session session, Packet packet)
+        {
+            throw new NotImplementedException();
+        }
+    }
 }
diff --git a/Gameserver/Server.cs b/Gameserver/Server.cs
index e07bafc..d1e060a 100644
--- a/Gameserver/Server.cs
+++ b/Gameserver/Server.cs
@@ -3,7 +3,7 @@ using System.Net;
 using Common;
 using Common.Utils;
 
-namespace PemukulPaku.Gameserver
+namespace PemukulPaku.GameServer
 {
     public class Server
     {
@@ -11,7 +11,8 @@ namespace PemukulPaku.Gameserver
         public readonly Dictionary<string, Session> Sessions = new();
         private static Server? Instance;
 
-        public static Server GetInstance() { 
+        public static Server GetInstance()
+        {
             return Instance ??= new Server();
         }
 
@@ -24,7 +25,7 @@ namespace PemukulPaku.Gameserver
         {
             TcpListener Listener = new(IPAddress.Parse("0.0.0.0"), (int)Global.config.Gameserver.Port);
 
-            while(true)
+            while (true)
             {
                 try
                 {
diff --git a/Gameserver/Session.cs b/Gameserver/Session.cs
index 1e8395c..6c3d818 100644
--- a/Gameserver/Session.cs
+++ b/Gameserver/Session.cs
@@ -1,8 +1,7 @@
 using System.Net.Sockets;
 using Common.Utils;
-using Newtonsoft.Json;
 
-namespace PemukulPaku.Gameserver
+namespace PemukulPaku.GameServer
 {
     public class Session
     {
diff --git a/Program.cs b/Program.cs
index 4f8e185..9d06f89 100644
--- a/Program.cs
+++ b/Program.cs
@@ -1,7 +1,7 @@
 using Common.Resources.Proto;
 using Common;
 using System.Net.NetworkInformation;
-using PemukulPaku.Gameserver;
+using PemukulPaku.GameServer;
 
 namespace PemukulPaku
 {
@@ -19,6 +19,7 @@ namespace PemukulPaku
             };
 
             new Thread(HttpServer.Program.Main).Start();
+            PacketFactory.LoadPacketHandlers();
             _ = Server.GetInstance();
 
             Console.Read();