OmarElGabry/chat.io

'use strict';

var userModel = require('../database').models.user;

var create = function (data, callback){
    var newUser = new userModel(data);
    newUser.save(callback);
};

var findOne = function (data, callback){
    userModel.findOne(data, callback);
}

var findById = function (id, callback){
    userModel.findById(id, callback);
}


/**
 * Find a user, and create one if doesn't exist already.
 * This method is used ONLY to find user accounts registered via Social Authentication.
 *
 */
var findOrCreate = function(data, callback){
    findOne({'socialId': data.id}, function(err, user){
        if(err) { return callback(err); }
        if(user){
            return callback(err, user);
        } else {
            var userData = {
                username: data.displayName,
                socialId: data.id,
                picture: data.photos[0].value || null
            };

            // To avoid expired Facebook CDN URLs
            // Request user's profile picture using user id 
            // @see http://stackoverflow.com/a/34593933/6649553
            if(data.provider == "facebook" && userData.picture){
                userData.picture = "http://graph.facebook.com/" + data.id + "/picture?type=large";
            }

            create(userData, function(err, newUser){
                callback(err, newUser);
            });
        }
    });
}

/**
 * A middleware allows user to get access to pages ONLY if the user is already logged in.
 *
 */
var isAuthenticated = function (req, res, next) {
    if(req.isAuthenticated()){
        next();
    }else{
        res.redirect('/');
    }
}

module.exports = { 
    create, 
    findOne, 
    findById, 
    findOrCreate, 
    isAuthenticated 
};