xcoobee-sdk/src/xcoobee/sdk/PagingResponse.js

The XcooBee SDK is a facility to abstract lower level calls and implement standard behaviors. The XcooBee team is providing this to improve the speed of implementation and show the best practices while interacting with XcooBee.

const ErrorResponse = require('./ErrorResponse');
const Response = require('./Response');

/**
 * A response representing a successful response that allows paging to the next
 * page of data if available.
 */
class PagingResponse extends Response {

  /**
   * @param {function} fetcher
   * @param {Object} currentPage
   * @param {Object} apiCfg
   * @param {Object} params
   */
  constructor(fetcher, currentPage, apiCfg, params) {
    super({
      apiCfg,
      code: 200,
      currentPage,
      error: null,
      fetcher,
      hasNextPage: currentPage.page_info.has_next_page,
      params,
      result: currentPage,
    });
  }

  /**
   * @returns {Promise<PagingResponse, ErrorResponse>}
   */
  async getNextPage() {
    if (this.hasNextPage()) {
      const {
        apiCfg,
        currentPage,
        fetcher,
        params,
      } = this._;

      const nextParams = {
        ...params,
        after: currentPage.page_info.end_cursor,
      };
      try {
        const nextPage = await this._.fetcher(apiCfg, nextParams);
        return new PagingResponse(fetcher, nextPage, apiCfg, params);
      } catch (err) {
        throw new ErrorResponse(400, err);
      }
    }
    return null;
  }

}

module.exports = PagingResponse;