input.js

// this bot is not moving cursor continuously for performace's sake
// this bot used robot.js and iohook.jsw

'use strict';

// add required modules
var hook= require('iohook');
var robot = require('robotjs');
var events = require('events');
var eventEmitter = new events.EventEmitter();
var mouse, currenttime, duration, data, interval;
var dragFlag = true;
var fs = require('fs');
var writeStream = fs.createWriteStream('bot.txt');


// initialize a 4 row array to record coordinates, key character, interval time
// x-coordinate, y-coordinate, time from last press, button character thats being pressed
var captureMotion = [];

var Motion = function(x, y, interval, rawcode) {
    this.x = x;
    this.y = y;
    this.interval = interval;
    this.rawcode = rawcode;
}

//----------------------------------------------------------------------//
console.log('recording starts');
console.log('press tab to stop');

function getTime(){
    
    var date= new Date();
    return date.getTime();

};

var baseTime = getTime();

// binding event keydown and listener
hook.on("keydown", (event)=> { 
    
    mouse= robot.getMousePos();

    currenttime = getTime();

    interval= currenttime - baseTime;

    // prevent zero time
    if(interval == 0 ) interval =1;

    captureMotion.push(new Motion(mouse.x, mouse.y, interval, event.rawcode));

    baseTime = getTime();
    dragFlag = true;
    
	// press tab to stop 
    if(event.rawcode == 48) eventEmitter.emit('stopListening');

});

hook.addListener("mousedown", (event)=> {

    mouse= robot.getMousePos();
    currenttime = getTime();
    interval= currenttime - baseTime;
    if(interval == 0 ) interval =1;

    // set the keycode of mouseclick as 127
    captureMotion.push(new Motion(mouse.x, mouse.y, interval, 127));

    dragFlag = true;
    baseTime = getTime();
});

hook.addListener('mousedrag', (event)=> {
    
    // set the keycode of mousedrag as 128
    if(dragFlag == true) {

        currenttime = getTime();

        interval= currenttime - baseTime;

        if(interval == 0 ) interval =1;

        /*
         * change this to mouseclick temporily, 
         * since the mouseclick events often is listened wrongly as mousedrag
        */
        captureMotion.push(new Motion(event.x, event.y, interval ,127));
    }

    dragFlag = false;

});


// sed to handle the mousedrag release
hook.addListener('mouseup', event=> {

    mouse= robot.getMousePos();

    if( dragFlag == false){
        // prevent zero time
        if(interval == 0 ) interval =1;

        captureMotion.push(new Motion(event.x, event.y, 100, 128));
        baseTime = getTime();
    }

})


// start listening
hook.start();

//------------------------------------------------------------//
eventEmitter.once('stopListening',()=>{
    
    // stop listening to events
    eventEmitter.removeAllListeners('keydown');
    eventEmitter.removeAllListeners('mousedown');
    eventEmitter.removeAllListeners('mouseup');
    eventEmitter.removeAllListeners('mousedrag');

	var buffer = new Buffer.from(JSON.stringify(captureMotion));

    writeStream.write(buffer, 'utf8');
    writeStream.end();

    writeStream.on('finish', function(){
        console.log('writing completed');
        hook.stop();
        process.exit(0);
    });
    
    writeStream.on('error', function(err){
        hook.stop();
        console.log(err.stack);
    });

});