var LocalStrategy = require('passport-local').Strategy;
var FacebookStrategy = require('passport-facebook').Strategy;


var User            = require('../app/models/user');
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);
        });
    });


    passport.use('local-signup', new LocalStrategy({
        usernameField: 'email',
        passwordField: 'password',
        passReqToCallback: true
    },
    function(req, email, password, done){
        process.nextTick(function(){
            User.findOne({'local.username': email}, function(err, user){
                if(err)
                    return done(err);
                if(user){
                    return done(null, false, req.flash('signupMessage', 'That email already taken'));
                } else {
                    var newUser = new User();
                    newUser.local.username = email;
                    newUser.local.password = newUser.generateHash(password);

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

        });
    }));

    passport.use('local-login', new LocalStrategy({
            usernameField: 'email',
            passwordField: 'password',
            passReqToCallback: true
        },
        function(req, email, password, done){
            process.nextTick(function(){
                User.findOne({ 'local.username': email}, function(err, user){
                    if(err)
                        return done(err);
                    if(!user)
                        return done(null, false, req.flash('loginMessage', 'No User found'));
                    if(!user.validPassword(password)){
                        return done(null, false, req.flash('loginMessage', 'invalid password'));
                    }
                    return done(null, user);

                });
            });
        }
    ));


    passport.use(new FacebookStrategy({
        clientID: configAuth.facebookAuth.clientID,
        clientSecret: configAuth.facebookAuth.clientSecret,
        callbackURL: configAuth.facebookAuth.callbackURL
      },
      function(accessToken, refreshToken, profile, done) {
          console.log(profile);
            process.nextTick(function(){
                User.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 = accessToken;
                        newUser.facebook.name = profile.displayName;
                        newUser.facebook.email = profile.emails[0].value;

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

                    }
                });
            });
        }

    ));


};