how to prevent app script from duplicating files

[Learmie James]

I was wondering how to prevent app scripts from duplicating a file once the document link has already been created. This is the script that I used.

function onOpen() {

   const ui = SpreadsheetApp.getUi();

   const menu = ui.createMenu('AutoFill Docs');

   menu.addItem('Create New Docs', 'createNewGoogleDocs');

   menu.addToUi();

   }

   function createNewGoogleDocs()  {

    const googleDocsTemplate = DriveApp.getFileById('1HKJxmSJDtvviFLJPsWox3UOuK0kd3C7K59K3M6yzakg');

    const destinationFolder = DriveApp.getFolderById('1BL9fp0PnC-65Rf-9OlcOm0hMaJPhqIUN');

    const sheet = SpreadsheetApp.getActiveSpreadsheet() . getSheetByName ('2024');

    const rows = sheet.getDataRange().getValues();

    rows.forEach(function(row, index) {

    if (index === 0) return;

    if (row[5]) return;

    const copy = googleDocsTemplate.makeCopy(`${row[1]}, ${row[2]} Management Details`, destinationFolder)

    const doc = DocumentApp . openById(copy .getId () )

    const body = doc .getBody();

    const friendlyDate = new Date(row[3]) . toLocaleDateString();

    body .replaceText('{{Date}}', row[0]);

    body .replaceText('{{Owner Name}}', row[1]);

    body .replaceText('{{Owner Phone Number}}', row[2]);

    body .replaceText('{{Owner Email}}', row[3]);

    body .replaceText('{{Occupied}}', row[4]);

    body .replaceText('{{Market Ready}}', row[5]);

    body .replaceText('{{Under Different Management}}', row[6]);

    body .replaceText('{{Company Name}}', row[7]);

    body .replaceText('{{End Date}}', row[8]);

    body .replaceText('{{Address to Manage}}', row[9]);

    body .replaceText('{{Bedrooms}}', row[10]);

    body .replaceText('{{Baths}}', row[11]);

    body .replaceText('{{Square Footage}}', row[12]);

    body .replaceText('{{Rent Amount}}', row[13]);

    body .replaceText('{{Pets Allowed}}', row[14]);

    body .replaceText('{{Notes}}', row[15]);

    body .replaceText('{{Initials}}', row[17]);

    body .replaceText('{{Source}}', row[16]);

    doc .saveAndClose();

    const url = doc.getUrl();

    sheet.getRange(index + 1,19) .setValue(url)

 

           

    })

   }