SyneticNL/Hyral

import isEmpty from 'lodash/isEmpty';

export default function createRelationshipsDecorator(relationships) {
  return (resource) => {
    const relationshipsProperty = Object.getOwnPropertyDescriptor(resource, 'relationships');

    Object.defineProperty(resource, 'relationships', Object.assign({}, relationshipsProperty, {
      configurable: true,
      get() {
        const resourceRelationships = relationshipsProperty.get();

        if (isEmpty(resourceRelationships)) {
          return relationships[resource.type] || {};
        }

        return resourceRelationships;
      },
    }));

    return resource;
  };
}