@coorpacademy/progression-engine/es/reducers/viewed-resources.js

import _includes from "lodash/fp/includes";
import _get from "lodash/fp/get";
import _findIndex from "lodash/fp/findIndex";
import _concat from "lodash/fp/concat";

function _extends() { _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }

export default function viewedResources(config) {
  return (currentViewedResources = [], action) => {
    switch (action.type) {
      case 'resource':
        {
          const resourceViewAction = action;
          const contentRef = resourceViewAction.payload.content.ref;
          const contentType = resourceViewAction.payload.content.type;
          const resourceRef = resourceViewAction.payload.resource.ref;

          const contentIndex = _findIndex({
            ref: contentRef
          }, currentViewedResources);

          if (contentIndex === -1) {
            return _concat(currentViewedResources)([{
              ref: contentRef,
              type: contentType,
              resources: [resourceRef]
            }]);
          }

          const contentResources = _get('resources', currentViewedResources[contentIndex]);

          const resourceAlreadyViewed = _includes(resourceRef, contentResources);

          if (resourceAlreadyViewed) return currentViewedResources; // return currentViewedResources, contentIndex, resourceRef;

          const newViewedResources = [...currentViewedResources];
          newViewedResources[contentIndex] = _extends(_extends({}, newViewedResources[contentIndex]), {}, {
            resources: _concat(newViewedResources[contentIndex].resources, [resourceRef])
          });
          return newViewedResources;
        }

      default:
        return currentViewedResources;
    }
  };
}
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