Google Drive Auto-Expire - Unshare Multiple Files Simultaneously? - google-apps-script

Question

Good Evening! I'm Aaron Ayres, an 8th grade mathematics teacher at Noblesville West Middle School in Noblesville, Indiana. Recently for a school-wide incentive my school is using Google Drive to share a "pass" that grants nominated students access to rewards and other treats during the month they are nominated. We typically have about 80 students who are nominated on a monthly basis for their hard work - each educator in the building nominates one student each month based on multiple criteria.
Instead of having to manually go through my folder and un-share the individual passes at the end of the month, I have been researching for a more efficient method of allowing the passes to expire. I came across Amit Argawal's Auto-expire script (http://www.labnol.org/internet/auto-expire-google-drive-links/27509/) and I think it could potentially work but it only expires one file at a time. Is there a way I can modify the script (or create a new script) to reference multiple, sharable links in the script editor so the sharing access to each individual students' pass expires at the end of the month? In other words, is there a way for the script to expire all 80+ passes at the same date and time? I'm a novice to Google Scripts so I'm wondering if I am not formatting my list or URL references correctly so the script recognizes multiple files, or perhaps I could revise the script to recognize an array of links instead of a single variable url link.
Thanks in advance for the assistance!

Answer 1

I hope you have the full script at your hand.Please give the URLs in a list, separated with commas. Are the passwords different for each student? Otherwise you could have just added the URL of the folder without changing the original script at all.
However, Please try changing these portions of the script:
// Enter the full list of URLs(separated with comma) of the public Google Drive file or folder
var URL_LS = ["https://drive.google.com/open?id=0B_NmiOlCM-VTcFp6U1hydTM2MzVCY3AzMUpuTEtVWUhXRXNz", "https://drive.google.com/file/d/0B_NmiOlCM-VTNXFqOU1jTG5JdHJVQ3ZGUGNqZklJNWludllr/view?usp=sharing"] ;
var URL_LN = URL_LS.length;
// Enter the expiry date in YYYY-MM-DD HH:MM format
var EXPIRY_TIME = "2016-02-18 09:46";
And again,replace the autoExpire() as follows:
function autoExpire() {
var id, asset, i, email, users;
try {
for (var j = 0; j < URL_LN; j++) {
var URL = URL_LS[j];
var id = URL.match(/[-\w]{25,}/g);
if (id) {
id = id[id.length-1];
asset = DriveApp.getFileById(id) ? DriveApp.getFileById(id) : DriveApp.getFolderById(id);
if (asset) {
asset.setSharing(DriveApp.Access.ANYONE, DriveApp.Permission.NONE);
asset.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.NONE);
users = asset.getEditors();
for (i in users) {
email = users[i].getEmail();
if (email !== "") {
asset.removeEditor(email);
}
}
users = asset.getViewers();
for (i in users) {
email = users[i].getEmail();
if (email !== "") {
asset.removeViewer(email);
}
}
}
}
}
} catch (e) {
Logger.log(e.toString());
}
}