ufs-store-permissions.js

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2017 Karl STEIN
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

import { _ } from 'meteor/underscore';

/**
 * Store permissions
 */
export class StorePermissions {

  constructor(options) {
    // Default options
    options = _.extend({
      insert: null,
      remove: null,
      update: null,
    }, options);

    // Check options
    if (options.insert && typeof options.insert !== 'function') {
      throw new TypeError('StorePermissions: insert is not a function');
    }
    if (options.remove && typeof options.remove !== 'function') {
      throw new TypeError('StorePermissions: remove is not a function');
    }
    if (options.update && typeof options.update !== 'function') {
      throw new TypeError('StorePermissions: update is not a function');
    }

    // Public attributes
    this.actions = {
      insert: options.insert,
      remove: options.remove,
      update: options.update,
    };
  }

  /**
   * Checks the permission for the action
   * @param action
   * @param userId
   * @param file
   * @param fields
   * @param modifiers
   * @return {*}
   */
  check(action, userId, file, fields, modifiers) {
    if (typeof this.actions[action] === 'function') {
      return this.actions[action](userId, file, fields, modifiers);
    }
    return true; // by default allow all
  }

  /**
   * Checks the insert permission
   * @param userId
   * @param file
   * @returns {*}
   */
  checkInsert(userId, file) {
    return this.check('insert', userId, file);
  }

  /**
   * Checks the remove permission
   * @param userId
   * @param file
   * @returns {*}
   */
  checkRemove(userId, file) {
    return this.check('remove', userId, file);
  }

  /**
   * Checks the update permission
   * @param userId
   * @param file
   * @param fields
   * @param modifiers
   * @returns {*}
   */
  checkUpdate(userId, file, fields, modifiers) {
    return this.check('update', userId, file, fields, modifiers);
  }
}