text: const fs = require('fs');
  const { Xml } = require('../../xmlnode');
  const uuidv4 = require('uuid/v4');
  
  class PptRelsFactory {
      constructor(parentFactory, args) {
          this.parentFactory = parentFactory;
          this.content = parentFactory.content;
          this.args = args;
      }
  
      build() {
          const xml = fs.readFileSync(`${__dirname}/../../fragments/ppt/_rels/presentation.xml.rels`);
          this.content['ppt/_rels/presentation.xml.rels'] = Xml.parse(xml);
      }
  
      addPresentationToSlideRelationship(slideName) {
          const rId = `rId-${uuidv4()}`;
  
          this.content['ppt/_rels/presentation.xml.rels'].push(
              Xml.create('Relationship', null, {
                  Id: rId,
                  Type: 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide',
                  Target: `slides/${slideName}.xml`,
              })
          );
  
          return rId;
      }
  
      removePresentationToSlideRelationship(slideName) {
          let rId = -1;
          let relationshipIndex = -1;
          let slideType = 'http://schemas.openxmlformats.org/officeDocument/2006/relationships/slide';
          let target = `slides/${slideName}.xml`;
  
          this.content['ppt/_rels/presentation.xml.rels'].forEach(function(element, index) {
              if (element.name() === 'Relationship' && element.attr('Type') === slideType && element.attr('Target') === target) {
                  rId = element.attr('Id');
                  relationshipIndex = index;
                  return;
              }
          });
  
          if (relationshipIndex !== -1) {
              this.content['ppt/_rels/presentation.xml.rels'].removeAt(relationshipIndex);
          }
  
          return rId;
      }
  }
  
  module.exports.PptRelsFactory = PptRelsFactory;
  