PasswordHandler.js

var logger = require('../helpers/logger')(module);
var generator = require('../helpers/generator');
var crypter = require('../helpers/crypter');
var errors = require('../constants/errors');
var mailer = require('../helpers/mailer');
var User = require('../models/user');
var async = require('async');

var PasswordService = function () {
    var optionObj = {lean: true, new: true};

    this.changePassword = function (id, oldPass, newPass, callback) {
        var searchObj = {_id: id, password: crypter(oldPass)};
        var updateObj = {password: crypter(newPass)};

        User.findOneAndUpdate(searchObj, updateObj, optionObj, callback);
    };

    this.restorePassword = function (email, callback) {
        var searchObj = {email: email};
        var tokenData = generator.generateToken();
        var updateObj = {restorePassToken: tokenData};

        async.waterfall([
            function (cb) {
                User.findOneAndUpdate(searchObj, updateObj, optionObj, cb);
            },

            function (user, cb) {
                user ? cb(null, user) : cb(errors.error(400, errors.EMAIL_NOT_REGISTERED));
            },

            function (user, cb) {
                cb(null, {ok: 1});
                mailer.onResetPassword(email, tokenData, logger.errorOrInfo);
            }
        ], callback);
    };

    this.resetPassword = function (token, callback) {
        var searchObj = {restorePassToken: token};
        var newPassword = generator.generateToken(6);
        var updateObj = {password: crypter(newPassword), restorePassToken: null};

        async.waterfall([
            function (cb) {
                User.findOneAndUpdate(searchObj, updateObj, optionObj, cb);
            },

            function (user, cb) {
                user ? cb(null, user) : cb(errors.error(404, errors.NOT_FOUND));
            },

            function (user, cb) {
                cb(null, {ok: 1});
                mailer.onNewPassword(user.email, newPassword, logger.errorOrInfo);
            }
        ], callback);
    };

};

var passwordService = new PasswordService();

module.exports = passwordService;