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yt-livechat

v2.1.1

Published

Interact with any YouTube liveChat.

Downloads

6

Readme

YT-Livechat Build StatusGreenkeeper badge

NPM

Create easily chat bots for any YouTube stream's LiveChat.

Install

Install via NPM, PNPM or Yarn from repo

$ npm i yt-livechat --save
$ pnpm i yt-livechat
$ yarn add yt-livechat

Simple example

// Import the lib
const { LiveChat } = require("yt-livechat");
// Or with TypeScript:
// import LiveChat from "yt-livechat"

// Let's do some config
const config = {
    liveChatID: process.env.LIVE_CHAT_ID || "", // ID of the LiveChat
    oauth: { // OAuth2 keys from Google Developers Console
        client_id: process.env.CLIENT_ID || "",
        client_secret: process.env.CLIENT_SECRET || "",
        refresh_token: process.env.REFRESH_TOKEN || "",
    },
};

const chat = new LiveChat(config); // Init chat object

// Register some events
chat.on("connected", () => console.log("Connected to the YouTube API."));
chat.on("error", (error) => console.log(error));

chat.on("chat", (message) => {
    console.log(`New message from ${message.authorDetails.displayName}.`);
    if (message.snippet.displayMessage === "/hello") {
        chat.say("Hello world !");
	}
});

// Start polling messages
chat.connect();

Summary

Constructor

Usage
const { LiveChat } = require("yt-livechat");
const config = { ... };
const chat = new LiveChat(config);
Config structure
{
    oauth: { // See this: https://developers.google.com/identity/protocols/OAuth2
    	client_id?: string;
    	client_secret?: string;
    	refresh_token?: string;
        access_token?: string;
   		token_type?: "Bearer" | string;
    	expiry_date?: number;
    };
    liveChatID: string; // ID of the LiveChat
    interval?: number; // Force time interval in ms between each poll.
}

You might be able to find ID of the Live Chat with this API endpoint.

Properties

auth: OAuth2Client

OAuth2 client from the google-auth-library lib. You can use it to make custom authenticated requests for example.

connected: boolean

Equals true if the lib polls messages. Else equals false.

Methods

connect(): Promise<this>

Start polling messages from the chat.

Usage
chat.connect()

disconnect(): Promise<this>

Stop polling messages from the chat.

Usage
chat.disconnect()

reconnect(): Promise<this>

Re-create OAuth client and just execute disconnect()and connect().

Usage
chat.reconnect()

say(message: string): Promise<LiveChatMessage>

Send a message.

Usage
chat.say("Hello !")

delete(messageId: string): Promise<this>

Delete a message based on his ID.

Usage
chat.delete("MESSAGE ID")

Events

connected -> ()

Emitted when the lib start polling messages from YouTube. Usually after the execution of the connect()method

Usage
chat.on('connected', () => ... )

disconnected -> ()

Emitted when the lib stop polling messages from YouTube. Usually after the execution of the disconnect()method

Usage
chat.on('disconnected', () => ... )

reconnected -> ()

Emitted when the lib reconnects to YouTube. Usually after the execution of the reconnect() methods.

Usage
chat.on('reconnected', () => ... )

polling -> ()

Emitted when the lib poll messages from YouTube. /!\ This event is usually issued a lot of times in less than a second: if you perform too many operations, you risk running out of resources!

Usage
chat.on('polling', () => ...)

tokens -> (tokens: Tokens)

Emitted when the access token is refreshed.

Usage
chat.on('tokens', (tokens) => ...)
Data structure
{
    access_token?: string;
    token_type?: "Bearer" | string;
    expiry_date?: number;
}

error -> (error: Error)

Emitted when an error occured.

Usage
chat.on('error', (error) => ...)
How to handle errors

The error object is very VERY VERY big because it contains all the request and response ! But just a small part can be enough :happy:

chat.on('error', (error) => {
    console.log(error.errors); // In this example, I faked the live chat ID to produce an error.
})

Let's take a look at the result:

[
    {
        domain: 'youtube.liveChat',
        reason: 'liveChatNotFound',
        message: 'The live chat that you are trying to retrieve cannot be found. Check the value of the requests <code>liveChatId</code> parameter to ensure that it is correct.'
    }
]

With this link to help you, I think it's enough to understand how to handle errors :smiley:

chat -> (message: LiveChatMessage)

Emitted when an user sent a message. (Pretty obvious...)

Usage
chat.on('chat', (message) => ...)
Data structure

Take a look here : https://developers.google.com/youtube/v3/live/docs/liveChatMessages#resource

Todo List

A checked item is considered as a work in progress.

  • [x] Write unit tests
  • [x] Methods should return promises (but still support events)
  • [ ] Add methods to get a Live Chat ID

Feel free to suggest features !

Feature Requests

Contributions

You're free to contribute by publishing pull requests, issues, ideas, ...

You can also buy me a drink :heart: