text: import { getElementIfNotEmpty } from './getElementIfNotEmpty';
  
  const getPatient = function(property) {
      if (!this.imageId) {
          return false;
      }
  
      const patient = cornerstone.metaData.get('patient', this.imageId);
      if (!patient) {
          return '';
      }
  
      return patient[property];
  };
  
  const getStudy = function(property) {
      if (!this.imageId) {
          return false;
      }
  
      const study = cornerstone.metaData.get('study', this.imageId);
      if (!study) {
          return '';
      }
      
      return study[property];
  };
  
  const getSeries = function(property) {
      if (!this.imageId) {
          return false;
      }
  
      const series = cornerstone.metaData.get('series', this.imageId);
      if (!series) {
          return '';
      }
  
      return series[property];
  };
  
  const getInstance = function(property) {
      if (!this.imageId) {
          return false;
      }
  
      const instance = cornerstone.metaData.get('instance', this.imageId);
      if (!instance) {
          return '';
      }
  
      return instance[property];
  };
  
  const getTagDisplay = function(property) {
      if (!this.imageId) {
          return false;
      }
  
      const instance = cornerstone.metaData.get('tagDisplay', this.imageId);
      if (!instance) {
          return '';
      }
  
      return instance[property];
  };
  
  const getImage = function(viewportIndex) {
      const element = getElementIfNotEmpty(viewportIndex);
      if (!element) {
          return false;
      }
  
      let enabledElement;
      try {
          enabledElement = cornerstone.getEnabledElement(element);
      } catch(error) {
          return false;
      }
  
      if (!enabledElement || !enabledElement.image) {
          return false;
      }
  
      return enabledElement.image;
  };
  
  const formatDateTime = (date, time) => `${date} ${time}`;
  
  const viewportOverlayUtils = {
      getPatient,
      getStudy,
      getSeries,
      getInstance,
      getTagDisplay,
      getImage,
      formatDateTime
  };
  
  export { viewportOverlayUtils };
  