Windows93 Trollbox super cool bot

const readline = require('readline');

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

const io = require('socket.io-client');

let client = 1

let char = ''

const sock = io("http://www.windows93.net:8081", {
  path: '/socket.io',
  transportOptions: {
    polling: {
      extraHeaders: {
        "Origin": "http://www.windows93.net",
        "Referer": "http://www.windows93.net/trollbox/index.php"
      }
    }
  }
})
i = undefined;
is = [];
function calc(equ){
    if(i!=undefined){
        is[is.length] = i;
    }
    eq = "";
    b = "";
    br = 0;
    for(i=0; i<equ.length; i++){
        if(equ[i] == '('){
            br++;
        }else if(equ[i] == ')'){
            br--;
            if(br == 0){
                eq += calc(b).toString();
            }
        }else{
            if(br>0){
                b += equ[i];
            }else{
                eq += equ[i];
            }
        }
    }
    equ = eq;
    num = [0];
    op = [];
    c = 0;
    for(i=0; i<equ.length; i++){
        if(Number(equ[i]) || Number(equ[i]) == 0){
            num[c] = num[c] * 10 + Number(equ[i]);
        }else{
            op[c] = equ[i];
            c++;
            num[c] = 0;
        }
    }
    for(i=0; i<op.length; i++){
        if(op[i] == '*'){
            op[i] = undefined;
            num[i] = num[i]*num[i+1];
            num[i+1] = undefined;
        }
        if(op[i] == '/'){
            op[i] = undefined;
            num[i] = num[i]/num[i+1];
            num[i+1] = undefined;
        }
    }
    n1 = [];
    o1 = [];
    for(i=0; i<num.length; i++){
        if(num[i] != undefined){
            n1[n1.length] = num[i];
        }
    }

    for(i=0; i<op.length; i++){
        if(op[i] != undefined){
            o1[o1.length] = op[i];
        }
    }
    op = o1;
    num = n1;
    sol = num[0];
    for(i=0; i<op.length; i++){
        if(op[i] == '+'){
            sol = sol + num[i+1];
        }if(op[i] == '-'){
            sol = sol - num[i+1];
        }
    }
    if(is.length != 0){
        i = is[is.length-1];
        is.length--;
    }
    return sol;
}
function found(word, text){
    text += ' ';
    n = 0;
    fnd = false;
    for(i = 0; i < text.length-word.length; i++){
        n = 0;
        for(j = 0; j < word.length; j++){
            if(word[j] == text[i+j]){
                n++;
            }
        }
        if(n == word.length){
            fnd = true;
        }
    }
    return fnd;
}
function count(word, text){
    var cnt = 0;
    var fnd = 0;
    for(let i = 0; i < text.length; i++){
        if(text[i] == word[cnt]){
            cnt += 1;
        }else{
            cnt = 0;
        }
        if(cnt == word.length){
            cnt = 0;
            fnd++;
        }
    }
    return fnd;
}

n = 0;
a = false;
str = '';
welp = 0;
saved = [];
names = [];
cmd = [];
stats = {};
sock.on("connect", () => {
    sock.emit('user joined', 'Europe (e!help)', '#00AAFF', '', '');
    sock.emit('message', 'Use e!help for more commands.\n' + str);
    sock.on('message', function (data){
        msg = data.msg;
        nick = data.nick;
        welp += count('welp', msg.toLowerCase())
        console.log(nick + ':' + msg);
        if(msg.toLowerCase() == 'e!help'){
            sock.emit('message', '+---------------------------------+\n|         LIST OF COMMANDS        |\n+---------------------------------+\n| e!help           Show help page |\n| e!roll <sides>   Random number  |\n| e!save <text>    Save text      |\n| e!read           Read all text  |\n| e!calc           Calculate      |\n| e!circles        Run Circles.io |\n| e!runner         Platformer     |\n| e!vote <user>    Vote for       |\n| e!status <user>  Show votes     |\n  | e!welps          Welp count     |\n+---------------------------------+');
        }
        if(msg.toLowerCase() == 'e!read'){
            str = '';
            for(i = 0; i < saved.length; i += 2){
                str += names[i] + ': ' + saved[i] + '\n';
            }
            sock.emit('message', str);
        }
        msg += ' ';
        str = '';
        cmd = [];
        for(i = 0; i < msg.length; i++){
            if(msg[i] == ' '){
                cmd[cmd.length] = str;
                str = '';
            }else{
                str += msg[i];
            }
        }
        if(cmd[0].toLowerCase() == 'e!save'){
            saved[saved.length] = '';
            for(i = 1; i < cmd.length; i++){
                saved[saved.length-1] += cmd[i] + ' ';
            }
            names[names.length] = nick;
        }
        if(cmd[0].toLowerCase() == 'e!roll'){
            if(cmd[1] ==undefined){
                cmd[1] = 6;
            }
            sock.emit('message', ' __\n|_|| ---> You rolled ' + (Math.floor(Math.random()*Number(cmd[1]))+1).toString() + '!');
        }if(cmd[0].toLowerCase() == 'e!calc'){
            c_text = "";
            for(i=1; i<cmd.length; i++){
                c_text += cmd[i];
            }
            sock.emit('message', 'Your solution is ' + calc(c_text).toString() + '.');
        }
        if(cmd[0].toLowerCase() == 'e!circles'){
            sock.emit('message', '/exe js $window("https://serene-beyond-31143.herokuapp.com/");$window.current.changeSize({width:640,height:480});$window.current.changeTitle("Circles");');
        }
        if(cmd[0].toLowerCase() == 'e!vote' && cmd.length > 1){
            if(stats[cmd[1].toLowerCase()] != undefined){
                if(!(nick in stats[cmd[1].toLowerCase()])){
                    stats[cmd[1].toLowerCase()].push(nick);
                    sock.emit('message', 'Thanks for voting!');
                }else{
                    sock.emit('message', 'You have already voted for this user!');
                }
            }else{
                stats[cmd[1].toLowerCase()] = [nick];
                sock.emit('message', 'Thanks for voting!');
            }
        }if(cmd[0].toLowerCase() == 'e!status' && cmd.length > 1){
            if(stats[cmd[1].toLowerCase()] != undefined){
                sock.emit('message', 'Votes: ' + stats[cmd[1].toLowerCase()].length.toString());
            }else{
                sock.emit('message', 'This user has not been voted for yet.');
            }
        }if(cmd[0].toLowerCase() == 'e!runner'){
            sock.emit('message', '/exe js $window("https://v6p9d9t4.ssl.hwcdn.net/html/1314430/index.html");$window.current.changeSize({width:640,height:480});$window.current.changeTitle("Matrix runner");');
        }
        if(cmd[0].toLowerCase() == 'e!welps'){
            welp--;
            sock.emit('message', welp.toString() + ' found.');
        }
    });
});
rl.on('line', (input) => {
    sock.emit('message', input);
});