twreporter-redux/lib/actions/topics.js

redux actions and reducers for twreporter website

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.fetchAFullTopic = fetchAFullTopic;
exports.fetchTopics = fetchTopics;
exports.fetchTopicsOnIndexPage = fetchTopicsOnIndexPage;

var _axios = require('axios');

var _axios2 = _interopRequireDefault(_axios);

var _get = require('lodash/get');

var _get2 = _interopRequireDefault(_get);

var _actionTypes = require('../constants/action-types');

var _actionTypes2 = _interopRequireDefault(_actionTypes);

var _reduxStateFields = require('../constants/redux-state-fields');

var _reduxStateFields2 = _interopRequireDefault(_reduxStateFields);

var _apiEndpoints = require('../constants/api-endpoints');

var _apiEndpoints2 = _interopRequireDefault(_apiEndpoints);

var _formApiUrl = require('../utils/form-api-url');

var _formApiUrl2 = _interopRequireDefault(_formApiUrl);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var _ = {
  get: _get2.default

  /* Fetch a full topic, whose assets like relateds, leading_video ...etc are all complete,
   * @param {string} slug - slug of topic
   */
};
// lodash
function fetchAFullTopic(slug) {
  return function (dispatch, getState) {
    var state = getState();
    var topic = _.get(state, _reduxStateFields2.default.entities + '.' + _reduxStateFields2.default.topics + '.' + slug, {});
    if (_.get(topic, 'full', false)) {
      return Promise.resolve();
    }

    var url = _apiEndpoints2.default.topics + '/' + slug + '?full=true';

    // Start to get topics
    dispatch({
      type: _actionTypes2.default.START_TO_GET_A_FULL_TOPIC,
      url: url
    });

    return _axios2.default.get((0, _formApiUrl2.default)(url)).then(function (response) {
      return dispatch({
        type: _actionTypes2.default.GET_A_FULL_TOPIC,
        payload: _.get(response, 'data.record', {})
      });
    }).catch(function (error) {
      // Error to get topics
      return dispatch({
        type: _actionTypes2.default.ERROR_TO_GET_A_FULL_TOPIC,
        error: error
      });
    });
  };
}

function _fetchTopics(dispatch, url, successActionType) {
  // Start to get topics
  dispatch({
    type: _actionTypes2.default.START_TO_GET_TOPICS
  });

  return _axios2.default.get((0, _formApiUrl2.default)(url)).then(function (response) {
    return dispatch({
      type: successActionType,
      payload: {
        items: _.get(response, 'data.records', []),
        total: _.get(response, 'data.meta.total', 0)
      }
    });
  }).catch(function (error) {
    // Error to get topics
    return dispatch({
      type: _actionTypes2.default.ERROR_TO_GET_TOPICS,
      error: error
    });
  });
}

/* Fetch topics(only containing meta properties),
 * and it will load more if (total > items you have currently).
 * @param {number} limit - the number of posts you want to get in one request
 */
function fetchTopics(limit) {
  return function (dispatch, getState) {
    var state = getState();
    var topics = _.get(state, _reduxStateFields2.default.topics);

    // if topics already exsited and there is nothing more to load
    if (topics && _.get(topics, 'total', 0) <= _.get(topics, 'items.length', 0)) {
      return Promise.resolve();
    }

    var offset = _.get(topics, 'items.length', 0);
    var path = _apiEndpoints2.default.topics + '?limit=' + limit + '&offset=' + offset;

    return _fetchTopics(dispatch, path, _actionTypes2.default.GET_TOPICS);
  };
}

/**
 * fetchTopicsOnIndexPage
 * This function will fetch the 2 to 5 latest topics.
 * It's specifically made for index page
 */
function fetchTopicsOnIndexPage() {
  return function (dispatch, getState) {
    var state = getState();
    var topics = _.get(state, _reduxStateFields2.default.indexPage + '.' + _reduxStateFields2.default.topics, []);
    if (Array.isArray(topics) && topics.length > 0) {
      return Promise.resolve();
    }

    var path = _apiEndpoints2.default.topics + '?offset=1&limit=4';

    return _fetchTopics(dispatch, path, _actionTypes2.default.GET_TOPICS_FOR_INDEX_PAGE);
  };
}