user.js

module.exports = (passport, app, User) => {

  app.get('/auth/google', passport.authenticate('google',
    {
      scope: ['profile', 'email'],
      callbackURL : '/auth/google/callback',
      accessType: 'offline',
      prompt: 'consent'
    })
  );

  app.get('/auth/google/callback', passport.authenticate('google', {
      callbackURL : '/auth/google/callback'
    }), (req, res) => {
     if(req.user.name){
       res.redirect('/dashboard');
     }else{
       User.findById(req.user._id).then((user) => {
         user.admin = true;
         user.save().then(() => {
           res.redirect('/dashboard');
         });
       })
     }
    }
  );



  app.get('/api/logout', (req, res) => {
    req.logout();
    res.redirect('/');
  });


  app.get('/api/current_user', (req, res) => {
      res.send(req.user);
  })



}