Remove a users edit access to a Google Drive file via an Apps Script Web App.
Web App code sample
The following Google Apps Script is designed to remove a person’s edit access from a Google Drive file via a Web App. The reason for using a Web App in this instance is because removing a person’s access to a file whilst they are running Apps Script code typically results in an error (or most certainly the inability to cleanly end the code). In the project I was working on prior to this step the code needs to send some automated emails before finishing with removing the person’s access.
Source: The Gift of Script: Remove File Access via a Web App
I use Google Apps Script to support staff and students in my job. I enjoy dabbling with creating tools to help with automation and I freely share my learning experiences on my blog, where I also have a number of useful Google Add-ons: www.pbainbridge.co.uk