ilkkao/mas

//
//   Copyright 2009-2017 Ilkka Oksanen <iao@iki.fi>
//
//   Licensed under the Apache License, Version 2.0 (the "License");
//   you may not use this file except in compliance with the License.
//   You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
//   Unless required by applicable law or agreed to in writing,
//   software distributed under the License is distributed on an "AS
//   IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
//   express or implied.  See the License for the specific language
//   governing permissions and limitations under the License.
//

const uuid = require('uid2');
const Base = require('./base');

const ONE_WEEK_IN_MS = 7 * 24 * 60 * 60 * 1000;

module.exports = class Session extends Base {
  static async create(props) {
    const data = {
      userId: props.userId,
      ip: props.ip,
      token: uuid(20),
      updatedAt: now()
    };

    return super.create(data);
  }

  get expired() {
    return now() - this.get('updatedAt') > ONE_WEEK_IN_MS;
  }

  encodeToCookie() {
    return Buffer.from(
      JSON.stringify({
        token: this.get('token'),
        userId: this.get('userId')
      })
    ).toString('base64');
  }
};

function now() {
  return new Date();
}