[+] Join groups by invite code

example.js

@@ -64,6 +64,15 @@ client.on('message', async msg => {
         } else {
             msg.reply('This command can only be used in a group!');
         }
+    } else if(msg.body.startsWith('!join ')) {
+        const inviteCode = msg.body.split(' ')[1];
+
+        try {
+            const chat = await client.acceptInvite(inviteCode);
+            msg.reply(`Joined *${chat.name}*!`);
+        } catch(e) {
+            msg.reply('That invite code seems to be invalid.');
+        } 
     } else if(msg.body == '!groupinfo') {
         let chat = await msg.getChat();
         if(chat.isGroup) {

src/Client.js

@@ -175,6 +175,19 @@ class Client extends EventEmitter {
         return ChatFactory.create(this, chat);
     }
 
+    /**
+     * Accepts an invite by code
+     * @param {string} inviteCode
+     */
+    async acceptInvite(inviteCode) {
+        const chat = await this.pupPage.evaluate(async inviteCode => {
+            const chatId = await Store.Invite.sendJoinGroupViaInvite(inviteCode);
+            return WWebJS.getChat(chatId._serialized);
+        }, inviteCode);
+
+        return ChatFactory.create(this.client, chat);
+    }
+
 }
 
 module.exports = Client;

src/util/Injected.js

@@ -13,6 +13,7 @@ exports.ExposeStore = (moduleRaidStr) => {
     window.Store.genId = window.mR.findModule((module) => module.default && typeof module.default === 'function' && module.default.toString().match(/crypto/))[0].default;
     window.Store.SendMessage = window.mR.findModule("addAndSendMsgToChat")[0];
     window.Store.MsgKey = window.mR.findModule((module) => module.default && module.default.fromString)[0].default;
+    window.Store.Invite = window.mR.findModule("sendJoinGroupViaInvite")[0];
 }
 
 exports.LoadUtils = () => {