api: add timestamps to message nodes, expose message id

runelite-mixins/src/main/java/net/runelite/mixins/RSMessageNodeMixin.java

@@ -42,15 +42,21 @@ public abstract class RSMessageNodeMixin implements RSMessageNode
 	@Inject
 	private String runeLiteFormatMessage;
 
+	@Inject
+	private int rl$timestamp;
+
 	@Inject
 	RSMessageNodeMixin()
 	{
+		rl$timestamp = (int) (System.currentTimeMillis() / 1000L);
+
 		final SetMessage setMessage = new SetMessage();
 		setMessage.setMessageNode(this);
 		setMessage.setType(getType());
 		setMessage.setName(getName());
 		setMessage.setSender(getSender());
 		setMessage.setValue(getValue());
+		setMessage.setTimestamp(rl$timestamp);
 		client.getCallbacks().post(setMessage);
 	}
 
@@ -75,6 +81,20 @@ public abstract class RSMessageNodeMixin implements RSMessageNode
 		this.runeLiteFormatMessage = runeLiteFormatMessage;
 	}
 
+	@Inject
+	@Override
+	public int getTimestamp()
+	{
+		return rl$timestamp;
+	}
+
+	@Inject
+	@Override
+	public void setTimestamp(int timestamp)
+	{
+		this.rl$timestamp = timestamp;
+	}
+
 	@Inject
 	@MethodHook(value = "setMessage", end = true)
 	public void setMessage(int type, String name, String sender, String value)
@@ -82,6 +102,7 @@ public abstract class RSMessageNodeMixin implements RSMessageNode
 		// Message nodes get reused after a time by calling setMessage.
 		// Clear the runelite formatted message then.
 		runeLiteFormatMessage = null;
+		rl$timestamp = (int) (System.currentTimeMillis() / 1000L);
 
 		final SetMessage setMessage = new SetMessage();
 		setMessage.setMessageNode(this);
@@ -89,6 +110,7 @@ public abstract class RSMessageNodeMixin implements RSMessageNode
 		setMessage.setName(name);
 		setMessage.setSender(sender);
 		setMessage.setValue(value);
+		setMessage.setTimestamp(rl$timestamp);
 		client.getCallbacks().post(setMessage);
 	}
 }