Integrate Google Drive API to website with Scribe text editor

Integrate the functionality of the website [login to view URL]!/edit/, with Scribe text editor. The used case is similar to the screenshot shared below. It’s a reply textarea from Coursera. Instead of the content stored in our database, it should be stored in user’s Google Drive. It should display in our website in the comments section after retrieving the content from users Google Drive Development in AngularJS, PHP and MySQL