app.use(passport.initialize());
app.use(passport.session());
app.use(flash());

var router = express.Router();

passport.serializeUser(function(user, done) {
    console.log('serialize');
    done(null, user);
});

passport.deserializeUser(function(user, done) {
    //findById(id, function (err, user) {
    console.log('deserialize');
    console.log(user);
    done(null, user);
    //});
});
passport.use('local', new LocalStrategy({
    usernameField: 'username',
    passwordField: 'password',
    passReqToCallback: true
}, function (req, username, password, done){
    console.log("username : " + username );
    if ( username == '1' && password == '2'){
        return done(null, {
            'user_id' : username
        });
    } else {
        console.log('passport failed');
        return done(false, null);
    }
}));


router.get('/users', function(req, res, next) {
    //res.render('index', { title: 'Express from server folder' });
    res.send("users");
});
router.get('/loginFailed', function(req, res, next) {
    //res.render('index', { title: 'Express from server folder' });
    res.send("loginFailed");
});

router.post('/login', passport.authenticate('local', {successRedirect : '/users', failureRedirect : '/loginFailed', failureFlash : true}) , // Auth Failed -> 401 Return
    function( req, res ){
        console.log('run login Post');
        res.redirect('/users');
    }
);