From 3bd59840fda66562c7533a639127e822b68c8fb1 Mon Sep 17 00:00:00 2001
From: "Tristan B. Kildaire" <deavmi@redxen.eu>
Date: Tue, 24 May 2022 23:04:49 +0200
Subject: [PATCH] Upgraded to new Tasky, now using fixed descriptor classes

---
 dub.json                 |   3 +-
 source/libdnet/libdnet.d | 186 +++++++++++++++++++++++++++++++--------
 2 files changed, 151 insertions(+), 38 deletions(-)

diff --git a/dub.json b/dub.json
index 406a2c7..21c6acd 100644
--- a/dub.json
+++ b/dub.json
@@ -5,8 +5,9 @@
 	"copyright": "Copyright © 2021, Tristan B. Kildaire",
 	"dependencies": {
 		"bformat": "3.1.3",
+		"dlog": "~>0.0.6",
 		"msgpack-d": "1.0.3",
-		"tasky": "1.0.3"
+		"tasky": "1.2.0"
 	},
 	"description": "Client-side DNET API",
 	"license": "LGPLv2",
diff --git a/source/libdnet/libdnet.d b/source/libdnet/libdnet.d
index 8dab864..2d4e9dd 100644
--- a/source/libdnet/libdnet.d
+++ b/source/libdnet/libdnet.d
@@ -5,10 +5,34 @@
 module libdnet.libdnet;
 
 import std.socket : Address, Socket;
-import tasky.engine : Engine;
+import tasky.engine : Engine, TaskyEvent;
+import tasky.jobs : Descriptor;
+
+
+import libdnet.messages.types;
+
+import msgpack;
+
+/* TODO: Remove this when we use the newer version of tasky (which uses TaskyEvent) */
+import eventy.event : Event;
+
+import dlog;
 
 public class Client
 {
+	/**
+	* Without __gshared, this would cause us to have a `logger` per-thread
+	* and statically init a new DefaultLogger() for each respective `logger` field
+	*
+	* This makes sure we have one `logger` field for ALL threads and therefore
+	* only one static initialization.
+	*
+	* Funnily enough if you wanted the opposite behaviour, omitting the `__gshared`
+	* will not help, DMD complains. One must make it explicit I guess with a 
+	* static initialization block `static this()`.
+	*/
+	private __gshared static Logger logger = new DefaultLogger();
+
 	private Engine engine;
 
 
@@ -16,7 +40,7 @@ public class Client
 
 
 
-
+	private Socket sock;
 
 
 
@@ -33,53 +57,141 @@ public class Client
 		this.endpoint = endpoint;
 
 		/* Open socket here */
-		Socket sock = new Socket();
-		sock.connect(endpoint);
+		this.sock = new Socket();
+		
 
 		/* Initialize a new Tasky engine */
 		engine = new Engine(sock);
+
+		/* Register handlers */
+		registerHandlers();
+	}
+
+
+	public enum SpecProtocolID : byte
+	{
+		NEWMESSAGE
+	}
+
+	/**
+	* Protocols
+	*/
+	private ulong[SpecProtocolID] ids;
+
+
+	/**
+	* Registers all of the handlers
+	*/
+	private final void registerHandlers()
+	{
+		/* Register the message handler */
+		Descriptor messageHandlerDesc = new class Descriptor
+		{
+				this()
+				{
+					super(0);
+				}
+		
+				public override void handler_TaskyEvent(TaskyEvent e)
+				{
+					/* Call the entry point handler */
+					messageHandler_entry(e);
+				}
+		};
+		ids[SpecProtocolID.NEWMESSAGE] = messageHandlerDesc.getDescriptorClass();
+
+		/* TODO: Handler IDs must match the specifition so these should be set in sequence */
+
+
+
+		/**
+		* TODO: Only output when in debug mode
+		*/
+		logger.log("<<< Protocol specification breakdown >>>");
+		import std.conv : to;
+		foreach(SpecProtocolID specID; ids.keys())
+		{
+			logger.log("["~to!(string)(specID)~"] = "~to!(string)(ids[specID]));
+		}
+	}
+
+	unittest
+	{
+		logger.log("unittesting with null address family (no connect() call)");
+		Client c = new Client(null);
+		
+	}
+
+
+	/**
+	* New message handler
+	*
+	* This is called whenever a new message arrives
+	*
+	* TODO: Switch to `TaskyEvent e`
+	*/
+	private final void messageHandler_entry(TaskyEvent e)
+	{
+		/* Get the payload */
+		ubyte[] eventPayload = cast(ubyte[])e.getPayload();
+
+		/* TODO: Check for msgpack errors */
+
+		/* Unpack the message */
+		EntityMessage message = unpack!(EntityMessage)(eventPayload);
+
+		/* Call the handler */
+		messageHandler(message);
+		
+		
+	}
+
+	/**
+	* Override this to provide your handler for new messages
+	*/
+	public void messageHandler(EntityMessage message)
+	{
+		import std.stdio;
+		writeln(message);
+	}
+
+
+	/**
+	* Authenicate with the server
+	*
+	* This is a handler that will get a unique descriptor
+	* for this given authentication attempt such that it
+	* matches up the reply, you want to ovveride authResponseHandler
+	*/
+	public void auth(string[] credentials)
+	{
+		/* TODO: Do auth */
+
+		/* TODO: Set the handler to `authResponseHandler` */
+		Descriptor desc;
+
+		/* TODO: Check if descriptor IDs available */
+		
+		/* Get the descriptor ID */
+		desc.getDescriptorClass();
+	}
+
+	public void authResponseHandler()
+	{
+		
 	}
 
 
 	/**
 	* Connect to the server
 	*/
-	public void connect()
+	public final void start()
 	{
+		/* TODO: Catch errors: Connect the socket to the endpoint host */
+		sock.connect(endpoint);
+		
 		/* Start the Tasky engine */
 		engine.start();
 	}
 
-
-	/**
-	* Login
-	*/
-	public void login(string[] credentials)
-	{
-
-	}
-
-	/**
-	* Shutsdown the client
-	*/
-	public void shutdown()
-	{
-		/* TODO: Logout if not already logged out */
-
-		/* TODO: Get tasky to shutdown */
-	}
-
-
-	/* TODO: Hook ~this() onto shutdown() */
-
-	/**
-	* When the next cycle of the garbage collector
-	* runs and realises there is a zero-refcount
-	* to this object then shutdown the client
-	*/
-	~this()
-	{
-		/* Shutdown the client */
-		shutdown();
-	}
 }