member-tasks.js

/**
 * @module "actions.member-tasks"
 * @desc Actions for management of member tasks and payments. Under the hood it
 * is very similar to the challenge listing management, as these tasks are in
 * fact just challenges of a special kind); however, due to differences in the
 * use cases, we can implement task management more efficient with dedicated
 * actions and reducer; thus, this module.
 */

import { createActions } from 'redux-actions';
import { getService } from '../services/challenges';

/**
 * Holds the size of member tasks page for the MEMBER_TASK/GET_DONE
 * action. Mind that current version of TC API v3 restricts the possible page
 * size by 50 tasks anyway, thus setting this to a larger value will result in
 * problems.
 */
export const PAGE_SIZE = 50;

/**
 * @static
 * @desc Creates an action that removes all loaded member tasks from Redux
 * store, and cancels any on-going loading operations.
 * @return {Action}
 */
function dropAll() {
  return null;
}

/**
 * @static
 * @desc Creates an action that signals beginning of member tasks page loading.
 * Note that dispatching this action before a previous loading operation has
 * been completed will cancel the previous loading operation.
 * @param {String} uuid UUID of the loading operation.
 * @param {Number} pageNum 0-based index of the page to load (PAGE_SIZE constant
 *  holds the page size).
 * @return {Action}
 */
function getInit(uuid, pageNum) {
  return { pageNum, uuid };
}

/**
 * @static
 * @desc Creates an action that loads a page of member tasks.
 * Prior to this action always dispatch
 * {@link module:actions.member-tasks.getInit} action with
 * the same arguments. The result of this action will be silently
 * discarted if its uuid is not stored in the Redux list of pending requests
 * to load tasks.
 * @param {String} uuid UUID of the loading operation.
 * @param {String} projectId Project filter for tasks.
 * @param {Number} pageNum 0-based index of the page to load (PAGE_SIZE constant
 *  holds the page size).
 * @param {String} tokenV3 Topcoder v3 auth token.
 * @return {Action}
 */
function getDone(uuid, projectId, pageNum, tokenV3) {
  return getService(tokenV3).getChallenges({
    isTask: 1,
    projectId,
  }, {
    perPage: PAGE_SIZE,
    page: pageNum + 1,
  }).then(({ challenges, totalCount }) => ({
    projectId,
    tasks: challenges,
    totalCount,
    uuid,
  }));
}

export default createActions({
  MEMBER_TASKS: {
    DROP_ALL: dropAll,
    GET_INIT: getInit,
    GET_DONE: getDone,
  },
});