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

module.exports = function(passport, appconfig) {

    // Serialization user methods

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

    passport.deserializeUser(function(id, done) {
        let user = db.User.find({ id });
        if(user) {
            done(null, user);
        } else {
            done(err, null);
        }
    });

    // Setup local user authentication strategy

    passport.use(
        'local',
        new LocalStrategy({
            usernameField : 'email',
            passwordField : 'password',
            passReqToCallback : true
        },
        function(req, uEmail, uPassword, done) {
            db.User.findOne({ 'email' :  uEmail }).then((user) => {
                if (user) {
                    user.validatePassword(uPassword).then((isValid) => {
                        return (isValid) ? done(null, user) : done(null, false);
                    });
                } else {
                    return done(null, false);
                }
            }).catch((err) => {
                done(err);
            });
        })
    );

    // Check for admin access

    db.onReady.then(() => {

        /*if(db.User.count() < 1) {
            winston.info('No administrator account found. Creating a new one...');
            if(db.User.insert({
                email: appconfig.admin,
                firstName: "Admin",
                lastName: "Admin",
                password: "admin123"
            })) {
                winston.info('Administrator account created successfully!');
            } else {
                winston.error('An error occured while creating administrator account: ');
            }
        }*/

        return true;

    });

};