/* jshint node: true */

var passport = require('passport'),
	LocalStrategy = require('passport-local').Strategy,
	_ = require('lodash'),
	util = require('../util'),
	config = require('../../../config.json'),
	User = require('../models/User');

var auth = {

	init: function () { 
		passport.serializeUser(auth.serializeUser);
		passport.deserializeUser(auth.deserializeUser);
		
		passport.use(new LocalStrategy(auth.verifyLocalUser))
	},

	loggedInLocal: function (req, res, next) {
		passport.authenticate("local", function(err, user, info){
			if (err) {
				return res.json({ error: err });
			}
			if (! user) {
				return info ? res.json(info) : res.redirect("/login");
			}
			
			user.last_ip = util.ip2num( req.ip )
			user.save(function(err, data){ if (err) console.err('error setting ip for user') })

			req.logIn(user, function(err) {
				if (err) { return next(err); }
				var returnTo = req.session.returnTo
				delete req.session.returnTo
				return res.json({ status: "OK", returnTo: returnTo || "/profile" })
			});
		})(req, res, next);
	},

	logout: function (req, res) {
		req.logout();
		res.redirect('/');
	},

	serializeUser: function (user, done) {
		done(null, user.id);
	},

	deserializeUser: function (id, done) {
		User.find({ id: id }, function (err, user) {
			done(err, user)
		});
	},

	verifyLocalUser: function (username, password, done) {
		User.findByUsername(username, function(err, user){
			if (err) { return done(err); }
			if (! user) {
				return done(null, false, { error: { errors: { username: { message: 'No such username.' } }}})
			}
			if (! user.validPassword(password)) {
				return done(null, false, { error: { errors: { password: { message: 'Incorrect password.' } }}})
			}
			return done(null, user);
		});
	}

}