Basic Chat and Message model implementation

src/models/Chat.js

@@ -2,8 +2,6 @@
 
 const Base = require('./Base');
 
-// TODO
-
 /**
  * Represents a Chat on WhatsApp
  * @extends {Base}
@@ -12,7 +10,28 @@ class Chat extends Base {
     constructor(client, data) {
         super(client);
 
+        if(data) this._patch(data);
+    }
 
+    _patch(data) {
+        this.id = data.id;
+
+        this.isGroup = data.isGroup;
+        this.isReadOnly = data.isReadOnly;
+        this.name = data.name;
+        this.unreadCount = data.unreadCount;
+        this.timestamp = data.t;
+    }
+
+    sendMessage(message) {
+        return this.client.sendMessage(this.id._serialized, message);
+    }
+
+    static get extraFields() {
+        return [
+            'formattedTitle',
+            'isGroup'
+        ];
     }
 }