Internal linking script sEO

function addLinksFromSheet() {
  var sheet = SpreadsheetApp.openById("YOUR_SPREADSHEET_ID").getSheetByName("Sheet1");
  var data = sheet.getDataRange().getValues();

  var document = DocumentApp.getActiveDocument();
  var body = document.getBody();

keywords = []
for (var i = 0; i < data.length; i++) {
    var searchPhrase = data[i][0];
    var hyperlink = data[i][1];
   keywords.push([searchPhrase, hyperlink])
}
keywords.sort(() => Math.random() - 0.5)
foundLinks = 0
for ( i=0; i< keywords.length) {
   if foundLinks >= 12 {
      break;
   }
   var keyword = keywords[i]
   if (body.indexOf(keyword[0]) !== -1) {
      body.replace(keyword[0], `<a href="${keyword[1]">${keyword[0]}</a>`);
      foundLinks += 1
   }
}

    var search = null;
    var count = 0;
    while (count < 1 && (search = body.findText(searchPhrase, search))) {
      var searchElement = search.getElement();
      var startIndex = search.getStartOffset();
      var endIndex = search.getEndOffsetInclusive();
      searchElement.asText().setLinkUrl(startIndex, endIndex, hyperlink);
      count++;
    }
  }

  document.saveAndClose();
}