feat: forward messages

close #316

index.d.ts

@@ -485,6 +485,10 @@ declare namespace WAWebJS {
      * If not, it will send the message in the same Chat as the original message was sent. 
      */
     reply: (content: MessageContent, chatId?: string, options?: MessageSendOptions) => Promise<Message>,
+    /** 
+     * Forwards this message to another chat
+     */
+    forward: (chat: Chat | string) => Promise,
   }
 
   /** ID that represents a message */

src/structures/Message.js

@@ -190,6 +190,23 @@ class Message extends Base {
         return this.client.sendMessage(chatId, content, options);
     }
 
+    /**
+     * Forwards this message to another chat
+     * 
+     * @param {string|Chat} chat Chat model or chat ID to which the message will be forwarded
+     * @returns {Promise}
+     */
+    async forward(chat) {
+        const chatId = typeof chat === 'string' ? chat : chat.id._serialized;
+
+        await this.client.pupPage.evaluate(async (msgId, chatId) => {
+            let msg = window.Store.Msg.get(msgId);
+            let chat = window.Store.Chat.get(chatId);
+
+            return await chat.forwardMessages([msg]);
+        }, this.id._serialized, chatId);
+    }
+
     /**
      * Downloads and returns the attatched message media
      * @returns {Promise<MessageMedia>}