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

var _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; };

import concat from 'lodash/fp/concat';
import findIndex from 'lodash/fp/findIndex';
import get from 'lodash/fp/get';
import includes from 'lodash/fp/includes';


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({}, newViewedResources[contentIndex], {
            resources: concat(newViewedResources[contentIndex].resources, [resourceRef])
          });
          return newViewedResources;
        }
      default:
        return currentViewedResources;
    }
  };
}
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