DubBot

DubBot is a library which is being thought to be used to make bots. It also contains a custom API that allows to make direct calls to the Dubtrack's servers (read more at the end of this file).

I struggled so hard trying to find out what calls are done to the dubtrack's server and how they work. So I decided to make a refference in the wiki, allowing any other person a easier way of making projects, independently of the programming language.

How to use it

Install DubBot

BubBot is an npm package. Simply use:

npm install dub-bot

Note: dubbot was taken. Don't forget the dash (-).

Requiring the package

const DubBot = require('dub-bot');

Logging in

var bot = new DubBot('username', 'password');

The DubBot logs in asynchronously. You sould only register events (see below) and/or use join, which is prepared to wait.

You can also use a bot as a guest (without logging in). Doing this will restrict the functions you can call (like happens in the web).

var bot = new DubBot();

Joining a room

var room = bot.join('room url or id');

The most common thing is to have the url (if the url were "url" the link would be https://www.dubtrack.fm/join/url).

Registring events

Both the bot and the room emit events. They extend events npm package, so they are osed like so:

bot.on('log-in', function(){
	console.log("Logged in correctly as " + bot);
});

Here we log with who we logged in (see implicit conversation to see why we can use bot directly).

They have mutiple events and may send objects as arguments of the callback. Here the current list:

DubBot

• log-in Called when the bot has logged in correctly. No arguments are sent.
• private-message Called when the bot recives a private message. The only argument is the Conversation object.

Room

• connect Called when the bot has succesfully connected to the room. No arguments.
• chat-message Called when the it recived a in chat message. The only argument is a Message object.
• song-change Called when the played song in the room is changed. Sends a Song object as argument.

Adding commands

A command is an intruction from in-chat messages to the bot. This library supports detecting commands without making a huge conditional chain.

room.addCommand('!command', cooldown, function(args, message){
	console.log("command triggered");
});

Let's start noticing that a command MUST start with an exclamation mark (!) and will only be triggered if the command is at the start of the message.

cooldown is a cooldown timer for the command, avoiding to be triggered again before that period of time. This helps avoiding spam as well as preventing multiple triggers for the same function. A good example of this last one is a !skip command, which skips the song. If multiple people trigger this command they may skip more than a single song which was not the intention.

The arguments of the callback are two (2):

• args An array of the message splitted by the sapces (pretty similar to argc and argv in C when working with console parameters). args[0] is always the command.
• message The Message object (the same as the chat-message event).

Even if a command is succesfully triggered, it will call (after executing teh callback) the chat-message event.

Adding command alias

Sometimes you want a single command to have multiple possible ways to be called, usually for having a shorted version of it.

room.addCommandAlias('!command', '!cmd');

The alias will respond exactly the same as it were the command, sharing the cooldown and the callback function.

Private messages

The first thing you'd use the PM is to send one. There are differents ways of doing it. The easiest one is to use a User object to send a private message directly:

user.sendPM("Private message :D");

Alternatively you can use a DubBot method:

bot.sendPM(user, "Private message :D");

This method also alows you to send private messages to conversation with more than a single person:

bot.sendPM([user1, user2, user3], "Private message :D");

This method won't send this message to all this 3 users. Instead it will get (or make in case that it doesn't exist) the conversation with this people. Remember that the conversation support up to 10 people, 9 counting the bot.

The other method is to get the Conversation object and use the method send(message). There are different ways of getting a conversation object. The first one (and most common) when you recive a PM (explained later), using a Userobject or using a DubBot:

user.getConversation(function(conversation)){
	conversation.send("Private message :D");
});
bot.getConversation([user1, user2], function(conversation)){
	conversation.send("Private message :D");
});

As you can see this methods are really similar to User and DubBot's sendPM.

When reciving a PM, the bot will emit a private-message event. It passes the conversation object with it:

bot.on('private-message', function(conversation){
	console.log(conversation.lastMessage);
	conversation.send("Recived");
});

Obviously, the event doesn't catch its own messages.

Objects

• DubBot Base class of the bot.
• Room Room (returned when joining into one).
• Message Message sended via room chat.
• User A dubtrack user.
• Conversation A private conversation. Used to send PM.
• Song A song.

They all have their own properties and methods. Take a look to the wiki for more information.

Implicit conversation

Every single object can implicitly convert into string. They conver into something they are represented.

• DubBot implicit converts to its username.
• Room implicit converts to its name.
• Message implicit converts to its content.
• User implicit converts to its username.
• Conversation implicit converts to its last message (this is the wierdest one).
• Song implicit converts to the video/song's name.

This implicitly conversations help making a cleaner code. See the following example:

room.on('chat-message', function(message){
	console.log(message.sender + ": " + message);
});

Here there are two implicit conversations. The first is message.sender, which is a User, to its username. The second one is message to its content. I find this more readable than the same code without using them:

room.on('chat-message', function(message){
	console.log(message.sender.username + ": " + message.content);
});

You can use whichever you prefer. Both work exactly the same way.

Multiple accounts and join multiple rooms

There is no limit (at least that i know) in how many accounts you can log in and rooms you can join from the same computer/server. This library allows to use multiple accounts and join multiple rooms simultaneously. Let's take a look at the following example:

var bot1 = new DubBot('username', 'password');
var bot2 = new DubBot(); //this one is a guest

var room11 = bot1.join('room1');
var room12 = bot1.join('room2');
var room21 = bot2.join('room1');

As you can see it's possible to make two bots connect to the same room even though they are controlled by the same application.

Direct calls to the API

In any moment you can make calls to the Dubtrack server by using the API. This is the Dubtrack's call made functions and saving cookies (used for log in) making it easier than trying to make the HTTP requests directly to the server.

Here an example:

bot.protocol.user.info('username', function(user){
	bot.protocol.pm.get(user._id, function(conversation){
		bot.protocol.pm.send(conversation._id, "This is a PM using the API.");
	});
});

The data recived by the callbacks is the raw data from the server.

More information about it in the wiki.