import Subscription from './Subscription';
import * as types from '../types';

export default class ContentVersionHistory extends Subscription {
  /**
   * Get the query attributes.
   *
   * @returns {Array}
   */
  getAttributes(): Array<String> {
    return ['Id', 'Field', 'NewValue', 'OldValue', 'IsDeleted', 'CreatedById', 'CreatedDate', 'ContentVersionId'];
  }

  /**
   * Get the subscription context.
   *
   * @returns {types.Context}
   */
  getContext(): types.Context {
    return {
      name: 'salesforce',
      subscription: 'contentVersionHistory',
    };
  }

  /**
   * Get the subscription name.
   *
   * @returns {String}
   */
  getName(): String {
    return 'ContentVersionHistory';
  }

  /**
   * Get the subscription query.
   *
   * @returns {String}
   */
  getQuery(): String {
    const attributes = this.getAttributes().join(', ');
    const time = this.getLastQueryTime();

    return `SELECT ${attributes} FROM ContentVersionHistory WHERE CreatedDate >= ${time}`;
  }
}