Script for backing up any URL to Google Drive.

Author: Jonathan Kim

backup-url.js

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+/**
+Create backups of the data returned by any URL and save them to Google Drive.
+This is going to create a folder structure that looks like this:
+
+/Backups
+    /2014-01-01
+        /2014-01-01T00:00:00.html
+        /2014-01-01T01:00:00.html
+        /2014-01-01T02:00:00.html
+        .. etc..
+*/
+
+var RESOURCE_URL = 'https://news.ycombinator.com/news',
+    BACKUP_FOLDER_ID = '<THE_ID_OF_THE_FOLDER_WHERE_YOUR_BACKUPS_WILL_LIVE>',
+    FOLDER_NAME_FORMAT = 'yyyy-MM-dd',
+    FILE_NAME_FORMAT = "yyyy-MM-dd'T'HH:00:00",
+
+    // Customize your file extension.
+    FILE_EXT = '.html',
+
+    // Folder names are all going to look like this.
+    now = new Date(),
+    FOLDER_NAME = Utilities.formatDate(now, 'GMT', FOLDER_NAME_FORMAT),
+    FILE_NAME = Utilities.formatDate(now, 'GMT', FILE_NAME_FORMAT) + FILE_EXT;
+
+
+function createBackup() {
+    var folder = getFolder(FOLDER_NAME);
+    createBackupFile(folder, FILE_NAME, fetchData());
+}
+
+// Ensures we're always working within the backup directory.
+function getFolder(name) {
+    var backupFolder = getBackupFolder(),
+        folders = backupFolder.getFoldersByName(name);
+
+    if (folders.hasNext()) {
+        // Just get the first one.
+        folder = folders.next();
+    } else {
+        folder = backupFolder.createFolder(name);
+    }
+    return folder;
+}
+
+// Returns the root folder where our backups exist.
+function getBackupFolder() {
+    return DriveApp.getFolderById(BACKUP_FOLDER_ID);
+}
+
+function createBackupFile(folder, filename, data, overwrite) {
+    if (overwrite) {
+        // Techincally we're not overwriting here. We're just deleting
+        // the duplicates.
+        var existingFiles = folder.getFilesByName(filename);
+        while (existingFiles.hasNext()) {
+            var file = existingFiles.next();
+            folder.removeFile(file);
+        }
+    }
+    folder.createFile(filename, data);
+}
+
+// NOTE: You could change this URL to be anything you want.
+function fetchData() {
+    var exportUrl = RESOURCE_URL;
+    return UrlFetchApp.fetch(exportUrl);
+}