How do i add players and give them deck? - node.js

Question

I'm trying to build a multiplayer card game using node.js and socket.io, i need to add players and give them a deck , how can i do that
server.js
var player = require("./players");
var nicknames=[];
io.on("connection", function (socket) {
socket.on('new user', function(data, callback){
if (nicknames.indexOf(data) != -1){
callback(false);
} else{
callback(true);
var aa = {id: nicknames.indexOf(data), name: data};
var ply = player(aa);
socket.user = data;
nicknames.push(socket.user);
updateNicknames();
}
});
function updateNicknames(){
io.sockets.emit('usernames', nicknames);
}
});
players.js
var Player = function(){
this.data ={
id : null,
name : null,
hand : []
};
this.fill = function (info) {
for(var prop in this.data) {
if(this.data[prop] !== 'undefined') {
this.data[prop] = info[prop];
}
}
};
this.getInformation = function () {
return this.data;
};
};
module.exports = function () {
var instance = new Player();
return instance;
};
but the program gives me in empty player object

Answer 1

This would be a good case for a constructor. If you use one, you'll want to avoid exporting an instantiated object. Consider the below players.js
var Player = (function() {
function Player(data) {
this.data = data;
var defaults = {
id: null,
name: null,
hand: []
};
for (var key in defaults) {
var val = defaults[key];
if (this.data[key] == null) {
this.data[key] = val;
}
}
}
Player.prototype.getData = function() {
return this.data;
};
return Player;
})();
module.exports = Player;
Then you can create a new instance of the Player class using the new operator.
var aa = {id: 0, name: 'test'};
var ply = new Player(aa);
console.log(ply.getData());
>> { id: 0, name: 'test', hand: [] }