Use less UrlFetch quota

Apps Script/Code.js

@@ -1,11 +1,12 @@
-function getAllPosts() {
-  var firebaseBaseUrl = "https://apps-script-community-archive.firebaseio.com/";
-  var communityId = "102471985047225101769";
-  var searchQuery = "community:" + communityId;
-  // you can use as the searchQuery most advanced search features listed here:
-  // https://support.google.com/plus/answer/1669519
-  // but "from:me" is not working, you need your Google+ profile ID, eg: "from:116263732197316259248 NOT in:community"
+var EXPORT_NAME = "My G+ Export";
+var FIREBASE_DB_URL = "https://apps-script-community-archive.firebaseio.com/";
+var COMMUNITY_ID = "102471985047225101769";
+var SEARCH_QUERY = "community:" + COMMUNITY_ID;
+// you can use as the SEARCH_QUERY most advanced search features listed here:
+// https://support.google.com/plus/answer/1669519
+// but "from:me" is not working, you need your Google+ profile ID, eg: "from:116263732197316259248 NOT in:community"
 
+function getAllPosts() {
   var today = Utilities.formatDate(new Date(), Session.getScriptTimeZone(), "yyyy-MM-dd");
   var startTime = Date.now();
 
@@ -27,6 +28,8 @@ function getAllPosts() {
     console.log("Trigger created");
     // Save when we started the backup, this will be useful to keep syncing new posts once the whole content has been retrieved
     scriptProperties.setProperty("lastSyncDate", today);
+    // Save export name in Firebase
+    renameExport();
   }
 
   var properties = scriptProperties.getProperties();
@@ -36,22 +39,22 @@ function getAllPosts() {
   var onlySyncNewPosts = properties["onlySyncNewPosts"] || false;
   if (onlySyncNewPosts) {
     // full export done, simply retrieve the latest posts
-    searchQuery+= " after:" + lastSyncDate;
+    SEARCH_QUERY+= " after:" + lastSyncDate;
   }
 
   var token = ScriptApp.getOAuthToken();
-  var fb = FirebaseApp.getDatabaseByUrl(firebaseBaseUrl, token);
+  var fb = FirebaseApp.getDatabaseByUrl(FIREBASE_DB_URL, token);
 
   do {
-    var activityFeed = Plus.Activities.search(searchQuery, {maxResults: 20, pageToken: nextPageToken});
+    var activityFeed = Plus.Activities.search(SEARCH_QUERY, {maxResults: 20, pageToken: nextPageToken});
     var posts = activityFeed.items;
     nextPageToken = activityFeed.nextPageToken;
     if (!posts.length) nextPageToken = null;
+    var postData = {};
 
     for (var i in posts) {
       nbOfPostsRetrieved++;
       var postId = posts[i].id;
-      var postData = {};
       postData["posts/" + postId] = posts[i];
 
       // retrieve comments
@@ -106,10 +109,9 @@ function getAllPosts() {
         }
       }
       */
-
-      // Firebase multi-location updates
-      fb.updateData('', postData);
     }
+    // Firebase multi-location updates - write up to 20 posts in 1 call, along with comments and plusoners
+    fb.updateData('', postData);
 
     ErrorHandler.expBackoff(function(){
       scriptProperties.setProperties({
@@ -134,11 +136,11 @@ function getAllPosts() {
       var nbOfPosts = Object.keys(posts).length;
       var currentUserEmailAddress = Session.getEffectiveUser();
       var subject = "Google+ exporter to Firebase - migration completed!";
-      var body = nbOfPosts + " posts have been exported, matching the following G+ search query: '" + searchQuery + "'<br>";
-      var linkToSearchResultsInGooglePlus = "https://plus.google.com/s/" + encodeURIComponent(searchQuery) + "/top";
+      var body = nbOfPosts + " posts have been exported, matching the following G+ search query: '" + SEARCH_QUERY + "'<br>";
+      var linkToSearchResultsInGooglePlus = "https://plus.google.com/s/" + encodeURIComponent(SEARCH_QUERY) + "/top";
       body+= linkToSearchResultsInGooglePlus+ "<br><br>";
       body+= "If you have completed the tutorial, all those posts should be available here:<br>";
-      body+= firebaseBaseUrl.replace("firebaseio.com", "firebaseapp.com");
+      body+= FIREBASE_DB_URL.replace("firebaseio.com", "firebaseapp.com");
       body+= "<br><br>New posts will also be automatically exported every day.";
       MailApp.sendEmail(currentUserEmailAddress, subject, body, {htmlBody: body});
     }
@@ -147,4 +149,19 @@ function getAllPosts() {
       scriptProperties.setProperty("lastSyncDate", today);
     }
   }
+}
+
+// Change the name of the export, displayed in the web app header
+function renameExport() {
+  var token = ScriptApp.getOAuthToken();
+  var fb = FirebaseApp.getDatabaseByUrl(FIREBASE_DB_URL, token);
+  fb.setData('siteTitle', EXPORT_NAME);
+}
+
+// throw in the Apps Script editor UI the total number of posts recorded in Firebase
+function listNbOfPostsStoredInFirebase() {
+  var token = ScriptApp.getOAuthToken();
+  var fb = FirebaseApp.getDatabaseByUrl(FIREBASE_DB_URL, token);
+  var posts = fb.getData('posts', {shallow: true});
+  throw "Currently " + Object.keys(posts).length + " posts stored in Firebase.";
 }