gistfile1.js

var User = require('../app/models/user');
var Auth = require('./middlewares/api_auth.js');

module.exports = function(app, passport){

  app.get('/api/auth/fb', function(req, res, next) {
    passport.authenticate('facebook-token', function(err, user, info) {

      if (err) {
        return next(err); // will generate a 500 error
      }

      // Generate a JSON response reflecting authentication status
      if (! user) {
        return res.send({ success : false, message : 'authentication failed' });
      }
      return res.send({
        success : true,
        message : 'authentication succeeded',
        user: user
      });
    })(req, res, next);
  });

  app.post("/api/users", function (req, res, next) {

  });

  app.post("/api/signup", function (req, res, next) {

    User.count({
      email: req.body.email
    }, function (err, count) {
      if (count === 0) {
        //next();
        res.send({ success : false, message : 'user do not exist' });
      } else {
        res.send({ success : false, message : 'user already exist', user: count });
      }
    });

    User.signup(req.body.email, req.body.password, function(err, user){
      if(err) return next(err);
      if(err) throw err;
      req.login(user, function(err){
        if(err) return next(err);
        return res.redirect("profile");
      });
    });
  });

  /**
   * Delete the user with the specified id
   */
  app.delete('/api/users/:user_id', function(req, res) {
    User.remove({
      _id : req.params.user_id
    }, function(err, user) {
      if (err)
        res.send(err);

      // get and return all the users after you create another
      User.find(function(err, users) {
        if (err)
          res.send(err)
        res.json(users);
      });
    });
  });

  /**
   * Retrieve all users
   */
  app.get("/api/users", function (req, res, next){

    User.find(function(err, users) {

      // if there is an error retrieving, send the error. nothing after res.send(err) will execute
      if (err)
        res.send(err);

      res.json(users);

    });
  });

  /**
   * Retrieve the user with the specified id
   */
  app.get("/api/users/:email", function (req, res, next){

    User.findOne({email : req.params.email}, function(err, user) {

      // if there is an error retrieving, send the error. nothing after res.send(err) will execute
      if (err)
        res.send({error: err});

      if (! user) {
        return res.send({ success : false, message : 'user not found' });
      }
      return res.send({
        success : true,
        message : 'user found',
        user: user
      });

    });
  });

  app.post("/api/test", function (req, res, next) {
    return res.json({email: req.body.email, password: req.body.password});
  });
}