[Termux & Nodejs] Build A Discord Bot in Android - Part-1

Repository

https://github.com/kibriakk/discordbot

What Will You Learn?

• How to install termux in android
• How to install nodejs in android
• How to create a Discord bot by android

Requirements

• Android
• Termux
• Nodejs
• Discord Id
• Browser

Difficulty

• Basic

Tutorial Contents

STEP-1 : Install Termux on Android

At first download termux from google playstore which is free to use . You can search it in google playstore or download it from this link
initially it doesn’t require root access.

Now open termux , it will show you a welcome screen. Press OK.

To install nodejs we need to setup some initial staffs first.

First command to write :

apt update && apt upgrade

and press enter in our keyboard. This doesn’t update the software or apt version but download lists of all available repository

Now setup storage and allow storage permission

termux-setup-storage

Now we will need a text editor which you can install using command in termux.

There are many text editor available for termux. but we will work with 'nano'

Write this command

apt install nano

Now let’s make a file using termux

Write this command

touch new.js

This will create a file named "new.js" but where we can see the file ?

You can see the file if you have root access.

Open a file explorer and go to root of the storage. Then data/data/com.termux/files/home. But in this case you will need root access.
If you dont have root access , its OK to forget it .

Now we edit the file using text editor

Write this command and hit enter

nano new.js

You can see that a text editor open

Now write any javascript code here and save.

For example I write this code

console.log("Hi kibria365.Java script is working fine.");

Now save with CTRL+X

STEP-2: Install Node.js in Termux

Nodejs is nessesary for running javascript file in android.So now we are going to install nodejs in termux.

First Open Termux and write this command and hit "Enter".
pkg install nodejs or apt install nodejs

It will ask you to press y/n , press y and enter so it will get permission to install nodejs.

Now additionally we can install express to have good package manager.

Write This command

npm init

And press enter. Now you will get some options to write information about your project. You can leave them blank by pressing enter aswell. Finally npm is initilized.

Now write :

npm install express --save

And press enter.

Finally Nodejs is installed.

You should check it before going the next step.

Do you remember we made a new.js file in previous step. Now we will check our installed nodejs by run this file.

Write this command and press Enter.

node new.js

You will see a message like this.

"Hi kibria365.Java script is working fine."

If you get any error comment on this post. I am available for help anytime.

STEP-3 : Create a discord Bot and add it on discord server.

Go to the link .

Your account should be logged in, so you’ll go straight to your account’s list of applications. Hit “New Application” to get started. Give the bot a name, then hit the button marked “Save Changes.”

Now, on the right-hand menu, click “Bot.” Once in the new menu, click “Add Bot” under the Build-a-bot option. If you only have one application — the one we just made — it should appear automatically. Otherwise, select it.

Then write bot username, select bot permission and upload profile picture.Copy The token. and keep it safe place.

Now we add this bot to our discord server. Login to your discord app.Create a server.

Then we need to generate a link.

So go to the application tab and open the “App Details” and find your “Client ID,” a long number. Copy the number and add it to this URL, in the place of word CLIENTID.

https://discordapp.com/oauth2/authorize?&client_id=CLIENTID&scope=bot&permissions=8

Now Enter into the link.That’ll take you to a website where you can tell Discord where to send your bot. Select your server name and press join bot. You will get a notification in your Discord server.

STEP-4 : Install node modules / packages for discord bot.

Open Termux and write the following command

npm install discord.io

Now press Enter.

discord.io node module will be installed.

Step-5 : Create a sample Bot

Create a new file with following command & hit Enter.

touch bot.js

Then Edit the "bot.js" file with text editor.

nano bot.js

Now write the following code one by one.

/*Variable area*/
var Discord = require('discord.io');
var bot = new Discord.Client({
    token: "",  // Write your Bot Token in "" 
    autorun: true
});

/*Event area*/

bot.on("ready", function(event) {
    console.log("Connected!");
    console.log("Logged in as: ");
    console.log(bot.username + " - (" + bot.id + ")");
});

bot.on("message", function(user, userID, channelID, message, event) {
    console.log(user + " - " + userID);
    console.log("in " + channelID);
    console.log(message);
    console.log("----------");

Message function.

    if (message === "ping") {
        sendMessages(channelID, ["Pong"]); //Sending a message with our helper function
    } else if (message === "picture") {
        sendFiles(channelID, ["fillsquare.png"]); //Sending a file with our helper function
    }
});

bot.on("presence", function(user, userID, status, game, event) {
    /*console.log(user + " is now: " + status);*/
});

bot.on("any", function(event) {
    /*console.log(rawEvent)*/ //Logs every event
});

bot.on("disconnect", function() {
    console.log("Bot disconnected");
    /*bot.connect()*/ //Auto reconnect
});

/*Function declaration area*/
function sendMessages(ID, messageArr, interval) {
    var resArr = [], len = messageArr.length;
    var callback = typeof(arguments[2]) === 'function' ?  arguments[2] :  arguments[3];
    if (typeof(interval) !== 'number') interval = 1000;

    function _sendMessages() {
        setTimeout(function() {
            if (messageArr[0]) {
                bot.sendMessage({
                    to: ID,
                    message: messageArr.shift()
                }, function(err, res) {
                    resArr.push(err || res);
                    if (resArr.length === len) if (typeof(callback) === 'function') callback(resArr);
                });
                _sendMessages();
            }
        }, interval);
    }
    _sendMessages();
}

function sendFiles(channelID, fileArr, interval) {
    var resArr = [], len = fileArr.length;
    var callback = typeof(arguments[2]) === 'function' ? arguments[2] : arguments[3];
    if (typeof(interval) !== 'number') interval = 1000;

    function _sendFiles() {
        setTimeout(function() {
            if (fileArr[0]) {
                bot.uploadFile({
                    to: channelID,
                    file: fileArr.shift()
                }, function(err, res) {
                    resArr.push(err || res);
                    if (resArr.length === len) if (typeof(callback) === 'function') callback(resArr);
                });
                _sendFiles();
            }
        }, interval);
    }
    _sendFiles();
}

Finally save the file By pressing CTRL+X and then Enter.

Now Write the command to Start The bot.

node bot.js
All message send to your bot will show here.

Open Discord App and send a message writing "ping" to your bot. You will get a reply "pong".

So Finally we have successfully created a Discord bot from android.

In the next part of the tutorial we will learn about bot function and Create some Bot with STEEM based.

Prove of work

https://github.com/kibriakk/discordbot