Unable to get cursor position from Google Doc using the App Script Web App URL in browser extension

[Ronak Bhandari]

Hi. I am trying to get the cursor position from the google doc in my browser extension. I have created an App Script and deployed it as a Web App with the below app configuration.

After placing the cursor, when I trigger the function from browser extension, the response is null. I checked the same responses in the App Script for that trigger using Logger and got null there also.

{ "dependencies": {

"enabledAdvancedServices": [

{

"userSymbol": "Docs",

"version": "v1",

"serviceId": "docs"

}

]

},

"exceptionLogging": "STACKDRIVER",

"runtimeVersion": "V8",

"webapp": {

"executeAs": "USER_DEPLOYING",

"access": "ANYONE_ANONYMOUS"

} }

Below is the sample code from the App Script 

function doPost(e) {

console.log(JSON.parse(e.postData.contents).documentId);

const doc = DocumentApp.openById(JSON.parse(e.postData.contents).documentId);

var cursor = doc.getCursor();

// var cursor = DocumentApp.getActiveDocument().getCursor();

Logger.log(cursor);

if (cursor) {

var position = cursor.getSurroundingTextOffset();

return ContentService.createTextOutput(JSON.stringify({ position: position }))

.setMimeType(ContentService.MimeType.JSON);

// var element = cursor.getElement();

// var offset = cursor.getOffset();

// Logger.log('Cursor is at offset ' + offset + ' in this element: ' + element);

} else {

var selection = doc.getSelection();

Logger.log(selection);

if (selection) {

var elements = selection.getRangeElements();

if (elements.length > 0) {

var element = elements[0];

var position = element.getStartOffset();

return ContentService.createTextOutput(JSON.stringify({ position: position }))

.setMimeType(ContentService.MimeType.JSON);

}

}

return ContentService.createTextOutput(JSON.stringify({ position: -1 }))

.setMimeType(ContentService.MimeType.JSON);

// Logger.log('Cannot find cursor.');

// return ContentService.createTextOutput(JSON.stringify({ position: -1 }))

// .setMimeType(ContentService.MimeType.JSON);

}

}

Below is the sample code from by content scripts

fetch(url, {

method: 'POST',

body: JSON.stringify({

documentId: documentId,

}),

}).then((res) => res.json()).then((data) => {

console.log(data);

}).catch((err) => {

console.log(err)

});

What could possibly go wrong here?

--

Regards,
Ronak Bhandari