OmarElGabry / chat.io

'use strict';

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

var create = function (data, callback){

	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 

};