app.post('/register', function (req, res, next) {

  db.collection('users',function (err, usersCollection) {

      bcrypt.genSalt(10, function(err, salt) {
          bcrypt.hash(req.body.password, salt, function(err, hash) {


              var newUser = {
                  firstName : req.body.firstName,
                  lastName : req.body.lastName,
                  userName : req.body.userName,
                  email : req.body.email,
                  password : hash
              }

              usersCollection.insert(newUser, {w:1}, function (err) {
                  return res.send();
              });
          });
       });
    });
});

app.put('/login', function (req, res, next) {

    db.collection('users',function (err, usersCollection) {

        usersCollection.findOne({userName: req.body.userName}, function (err,user) {

            bcrypt.compare(req.body.password, user.password,function (err,result) {
                if(result) {
                    var mytoken = jwt.encode(user, JWT_SECRET);
                    return res.json({token : mytoken});
                } else {
                    return res.status(400).send();
                }
            });
        });
    });
});

controller('LoginController',function ($rootScope, $scope, $http, $cookies) {

    $scope.signin = function () {

        var user = {
            userName : $scope.userName,
            password: $scope.password
        };

        $http.put('/login', user)
            .then(function(res) {
                $cookies.put('token', res.data.token);
                $cookies.put('currentUser', $scope.userName);
                $rootScope.token = res.data.token;
                $rootScope.currentUser = $scope.userName;
                document.getElementById("loginForm").reset();
            },
            function (err) {
                alert('check username and password');
            });
    }