Google Docs - create image at bookmark with Google Apps Script

Question

I have created a bookmark in Google Docs. I know the bookmark Id.

function addBookmark() {
 var doc = DocumentApp.getActiveDocument();
 var cursor = doc.getCursor();
 var bookmark = doc.addBookmark(cursor);

 var bookmarkId = bookmark.getId();

 Logger.log(bookmarkId);  
}

1. Can I create an image from Google Drive at the bookmark?
2. After creating the image I want to update it regularly with a time-based trigger. Do I have to delete the image before or can I update it without deleting it?

Answer 1

The bookmark Id is not helpful. Better is to write a paragraph with specific text in the document. Now you can search for it and add or update the image.

function updateImageAtParagraph() {
 var body = DocumentApp.getActiveDocument().getBody();

 // Get an image in Drive from its ID.
 var image = DriveApp.getFileById('...imageId...');

 var searchString = "paragraphText";  //specific text paragraph in the document

 var paragraphSearch = body.findText(searchString);

 if(paragraphSearch !== null) {
   var paragraph = paragraphSearch.getElement().getParent().asParagraph();
   paragraph.clear().appendText(searchString);
   paragraph.appendInlineImage(image);
 }
}