passport.js

var LocalStrategy = require('passport-local').Strategy;

var mongoose = require('mongoose');
var User = mongoose.model('user');

module.exports = function(passport) {

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


    passport.deserializeUser(function(id, done) {
        User.findById(id, function(err, user) {
            done(err, user);
        });
    });

    passport.use('local-signup', new LocalStrategy({
        usernameField: 'username',
        passwordField: 'password',
        passReqToCallback: true
    },
    function(req, username, password, done) {
        User.findOne({'username': username}, function(err, user) {
            if(err)
                return done(err);
            if(user) {
                return done(null, false, req.flash('signupMessage', 'Ce nom d\'utilisateur est déjà utilisé'));
            } else {
                var newUser = new User();
                newUser.username = username;
                newUser.password = newUser.generateHash(password);
                newUser.nom = req.body.nom;
                newUser.prenom = req.body.prenom;
                newUser.mail = req.body.mail;
                newUser.telephone = req.body.telephone;
                newUser.grade = req.body.grade;
                newUser.save(function(err) {
                    if(err)
                        throw err;
                    return done(null, newUser);
                });
            }

        });
    }));

    passport.use('local-login', new LocalStrategy({
        usernameField: 'username',
        passwordField: 'password',
        passReqToCallback: true
    },
    function(req, username, password, done) {
        User.findOne({'username': username}, function(err, user) {
            if(err)
                return done(err);
            if(!user)
                return done(null, false, req.flash('loginMessage', 'Aucun utilisateur avec ce nom n\'est enregistré'));
            if(!user.validPassword(password))
                return done(null, false, req.flash('loginMessage', 'Mot de passe incorrect!'))
            return done(null, user);
        });
    }));

    function checkIfLoggedIn(req, res, next) {
        if(req.isAuthenticated())
            return next();
        req.flash('loginMessage', 'Vous devez être connecté pour accéder à cette partie du site');
        res.redirect('/login');
    }

};