added message sending and PM channel resolving

src/PMChannel.js

@@ -1,6 +1,25 @@
-var User = require("./user.js").User;
-
-exports.PMChannel = function(user, id){
-    this.user = new User(user);
-    this.id = id;
+class PMChannel {
+    constructor(data, client) {
+        this.user = client.getUser("id", data.recipient.id);
+        this.id = data.id;
+		this.messages = [];
+    }
+    
+    addMessage(data){
+		if(!this.getMessage("id", data.id)){
+			this.messages.push(data);
+		}
+		return this.getMessage("id", data.id);
+	}
+    
+    getMessage(key, value){
+		for(var message of this.messages){
+			if(message[key] === value){
+				return message;
+			}
+		}
+		return null;
+	}
 }
+
+module.exports = PMChannel;