react-redux-fetch/lib/utils/createAddToListAction.js

A declarative and customizable way to fetch data for React components and manage that data in the Redux state

'use strict';

exports.__esModule = true;
exports.default = createAddToListAction;

var _seamlessImmutable = require('seamless-immutable');

var _seamlessImmutable2 = _interopRequireDefault(_seamlessImmutable);

var _at = require('lodash/at');

var _at2 = _interopRequireDefault(_at);

var _filter = require('lodash/filter');

var _filter2 = _interopRequireDefault(_filter);

var _isArray = require('lodash/isArray');

var _isArray2 = _interopRequireDefault(_isArray);

var _reduce = require('lodash/reduce');

var _reduce2 = _interopRequireDefault(_reduce);

var _find2 = require('lodash/find');

var _find3 = _interopRequireDefault(_find2);

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

function createAddToListAction(state, action) {
  if (action.request.meta && action.request.meta.addToList) {
    var _action$request$meta$ = action.request.meta.addToList,
        path = _action$request$meta$.path,
        idName = _action$request$meta$.idName;

    var stateValue = path ? (0, _at2.default)(state.value, path)[0] : state.value;
    var actionValue = path ? (0, _at2.default)(action.value, path)[0] : action.value;
    var actionValueList = !(0, _isArray2.default)(actionValue) ? [actionValue] : actionValue;
    var itemsAdded = [];

    if (!(0, _isArray2.default)(stateValue)) {
      throw Error("Cannot use 'meta.addToList' if the value in the state is not an array!");
    }

    var newValue = (0, _reduce2.default)(stateValue, function (s, item) {
      var _find;

      var itemFromActionValueList = (0, _find3.default)(actionValueList, (_find = {}, _find[idName] = item[idName], _find));
      if (itemFromActionValueList) {
        itemsAdded.push(itemFromActionValueList[idName]);
      }
      var newS = [].concat(s, [itemFromActionValueList || item]);
      return newS;
    }, []);

    var itemsToAppend = (0, _filter2.default)(actionValueList, function (o) {
      return itemsAdded.indexOf(o[idName]) === -1;
    });

    var finalValue = [].concat(newValue, itemsToAppend);

    return Object.assign({}, action, {
      value: path ? _seamlessImmutable2.default.from(state.value).setIn(path.split('.'), finalValue, { deep: true }) : finalValue
    });
  }

  return action;
}