/app/config/passport.js

'use strict';

var LocalStrategy = require('passport-local').Strategy;
var FacebookStrategy = require('passport-facebook').Strategy;
var TwitterStrategy  = require('passport-twitter').Strategy;
var InstagramStrategy = require('passport-instagram').Strategy;
var MailChimpStrategy = require('passport-mailchimp').Strategy;

var traceur = require('traceur');
var User = traceur.require(__dirname + '/../models/user.js');
var userCollection = global.nss.db.collection('users');
var _ = require('lodash');

var configAuth = require('./auth');

module.exports = function(passport) {

    passport.serializeUser(function(user, done) {
        done(null, user._id);
    });

    passport.deserializeUser(function(id, done) {
        User.findById(id, function(err, user) {
            done(err, user);
        });
    });

    // *********** LOCAL SIGNUP ***************

    passport.use('local-signup', new LocalStrategy({
        usernameField : 'email',
        passwordField : 'password',
        passReqToCallback : true
    },

    function(req, email, password, done) {

        req.flash('signupMessage', '');
        process.nextTick(function() {

        userCollection.findOne({ 'local.email' :  email }, function(err, user) {
            if (err){
              return done(err);
            }

            if (user) {
                return done(null, false, req.flash('signupMessage', 'That email is already taken.'));
            } else {

                var newUser            = new User();

                newUser.local.email    = email;
                newUser.local.password = newUser.generateHash(password);

                newUser.save(function(err) {
                    if (err){
                      throw err;
                    }
                    return done(null, newUser);
                });
            }
        });
        });
    }));

    // *************** LOCAL LOGIN *****************

    passport.use('local-login', new LocalStrategy({
        usernameField : 'email',
        passwordField : 'password',
        passReqToCallback : true
    },
    function(req, email, password, done) {

        userCollection.findOne({ 'local.email' :  email }, function(err, user) {

            user = _.create(User.prototype, user);
            if (err){
              return done(err);
            }
            if (!user){
              return done(null, false, req.flash('loginMessage', 'No user found.')); // req.flash is the way to set flashdata using connect-flash
            }
            if (!user.validPassword(password)){
              return done(null, false, req.flash('loginMessage', 'Oops! Wrong password.')); // create the loginMessage and save it to session as flashdata
            }
            return done(null, user);
        });
    }));

    // ******************* FACEBOOK ******************
    passport.use(new FacebookStrategy({

        clientID        : configAuth.facebookAuth.clientID,
        clientSecret    : configAuth.facebookAuth.clientSecret,
        callbackURL     : configAuth.facebookAuth.callbackURL,
        passReqToCallback : true

    },

    function(req, token, refreshToken, profile, done) {

        process.nextTick(function() {

        	if (!req.user) {

	            userCollection.findOne({ 'facebook.id' : profile.id }, function(err, user) {
	                if (err){
                    return done(err);
                  }
	                if (user) {
	                    return done(null, user);
	                } else {
	                    var newUser            = new User();

	                    newUser.facebook.id    = profile.id;
	                    newUser.facebook.token = token;
	                    newUser.facebook.name  = profile.name.givenName + ' ' + profile.name.familyName;
	                    newUser.facebook.email = profile.emails[0].value;
                      newUser.facebook.photos = profile.photos;

	                    newUser.save(function(err) {
	                        if (err){
                            throw err;
                          }
	                        return done(null, newUser);
	                    });
	                }
	            });
	        } else {
	            var user            = req.user;

	            user.facebook.id    = profile.id;
	            user.facebook.token = token;
	            user.facebook.name  = profile.name.givenName + ' ' + profile.name.familyName;
	            user.facebook.email = profile.emails[0].value;
              user.facebook.photos = profile.photos;
              user = _.create(User.prototype, user);
	            user.save(function(err) {
	                if (err){
                    throw err;
                  }
	                return done(null, user);
	            });
	        }
        });
    }));

    // ********************* TWITTER **********************
    passport.use(new TwitterStrategy({

        consumerKey     : configAuth.twitterAuth.consumerKey,
        consumerSecret  : configAuth.twitterAuth.consumerSecret,
        callbackURL     : configAuth.twitterAuth.callbackURL,
        passReqToCallback : true

    },
    function(req, token, tokenSecret, profile, done) {

          	process.nextTick(function() {

              var user                 = req.user;

	            user.twitter.id          = profile.id;
	            user.twitter.token       = token;
	            user.twitter.username    = profile.username;
	            user.twitter.displayName = profile.displayName;
              user.twitter.photos      = profile.photos;
              user = _.create(User.prototype, user);
	            user.save(function(err) {
	                if (err){
                    throw err;
                  }
	                return done(null, user);
	            });
      	});
    }));

    // ********************* INSTAGRAM **********************
  //   passport.use(new InstagramStrategy({
  //
  //       clientID      : configAuth.instagramAuth.clientID,
  //       clientSecret  : configAuth.instagramAuth.clientSecret,
  //       callbackURL   : configAuth.instagramAuth.callbackURL,
  //       passReqToCallback : true
  //   },
  //
  //   function(req, accessToken, refreshToken, profile, done) {
  //
  //     process.nextTrick(function() {
  //
  //       userCollection.findOrCreate({ 'instagramId': profile.id }, function (err, user) {
  //         return done(err, user);
  //       });
  //
  //     });
  //   }
  // ));

    passport.use(new InstagramStrategy({

        clientID        : configAuth.instagramAuth.clientID,
        clientSecret    : configAuth.instagramAuth.clientSecret,
        callbackURL     : configAuth.instagramAuth.callbackURL,
        passReqToCallback : true
    },

    function(req, token, refreshToken, profile, done) {

        process.nextTick(function() {

          var user             = req.user;

          user.instagram.id    = profile.id;
          user.instagram.token = token;
          user.instagram.username  = profile.username;
          user = _.create(User.prototype, user);
          user.save(function(err) {
              if (err){
                throw err;
              }
              return done(null, user);
          });
        });
    }));

    // ********************* MailChimp **********************
    passport.use(new MailChimpStrategy({
      clientID        : configAuth.mailChimpAuth.clientID,
      clientSecret    : configAuth.mailChimpAuth.clientSecret,
      callbackURL     : configAuth.mailChimpAuth.callbackURL,
      passReqToCallback : true
    },

    function(req, token, refreshToken, profile, done) {

      process.nextTick(function() {

        var user             = req.user;

        user.mailChimp.id    = profile.id;
        user.mailChimp.token = token;
        user.mailChimp.username = profile.username;
        user = _.create(User.prototype, user);
        user.save(function(err) {
          if (err){
            throw err;
          }
          return done(null,user);
        });
      });
    }));



};