PHP Scripts for Google Drive API

I need it developed in pure php / curl API reference [login to view URL] Token and refresh token stored in a mysql DB ( token, refresh, lastupdate ) Files: ------------ - [login to view URL] All credentials from google cloud to access the api and variables like redirect Uris here. [login to view URL] This file checks the mysql table if the token is there and verify it's validity with google. If there is no valid token first try to refresh token reading the refresh_token from mysql. It returns a status for the other scripts. - [login to view URL] / redirect uri includes [login to view URL] If the token is there prints a html with a button to disconnect. Disconnect will simply delete the entry from mysql If the token is not found print html with button to click that redirects the user to the google auth screen. When it receives the response from the google auth redirect (code) it saves the token and the refresh token in the database. [login to view URL] includes [login to view URL] If there is no valid token (no token or impossible to refresh) prints an error message and exits. List from google drive (folder and files at the same level in alphabetical order), ability to go deeper (navigate) the folders. A tree like what you see when you login in google drive Upload go the file at the current location Delete of file Download the file Download url shall be printed in clear. [login to view URL] includes [login to view URL] If there is no valid token (no token or impossible to refresh) prints an error message and exits. This files prints a form <select> all "files" available. i.e. /[login to view URL] /[login to view URL] /folder/[login to view URL]