var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var GoogleStrategy = require('passport-google-oauth').OAuth2Strategy;
var expressValidator = require('express-validator');
var bodyParser = require('body-parser');
var User = require('./user');
var configAuth = require('./auth');

// Login
passport.use('login', new LocalStrategy({
    usernameField: 'email',
    passwordField: 'password',
    passReqToCallback: true
},
    function (req, email, password, done) {
        console.log("Im here now!");
        if (email) {
            console.log("toLowerCase")
            email = email.toLowerCase();
        }

        process.nextTick(function () {
            User.findOne({ 'email': email }, function (err, user) {
                if (err) {
                    return done(err);
                }
                if (!user) {
                    console.log('User Not Found with email ' + email);
                    return done(null, false);
                }
                if (!user.validPassword(password)) {
                    console.log('Invalid Password');
                    return done(null, false);
                }
                return done(null, user);
            });
        });
    }));

router.post('/login', passport.authenticate('login', {
    successRedirect: '/auth/success',
    failureRediret: '/auth/failure'
}));

<form ng-submit="doLogin()">
  <div class="list">
    <label class="item item-input">
      <span class="input-label">Username</span>
      <input type="email" data-type="text" ng-model="loginData.email" name="email">
    </label>
    <label class="item item-input">
      <span class="input-label">Password</span>
      <input type="password"  ng-model="loginData.password" name="password">
    </label>
    <label class="item">
      <button class="button button-block button-positive" type="submit">Log in</button>
    </label>
  </div>
</form>

$scope.doLogin = function() {
var email= $scope.loginData.email;
var password = $scope.loginData.password;
console.log('Doing login', $scope.loginData);
$http({
  method: 'POST',
  url: 'http://localhost:8000/auth/login',
  data: {email: email, password: password},
  headers: {'Content-Type': 'application/x-www-form-urlencoded', 'Access-
Control-Allow-Origin': '*'}
});
};

app.use('/auth', routes);

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

router.post('/login', passport.authenticate('login', {
            successRedirect: '/auth/success',
            failureRediret: '/auth/failure'
}));