feat(calendar): Readded support for multiple groups and made it more integrated + avoided blocked groups

1. Undid the removal of the support for multiple groups
2. Made the multiple groups and get all members functions to use each other to avoid duplicated code
3. Added support for avoiding blocked groups (e.g. external ones)
4. Simplified both functions' code

Author: lwcorp

solutions/automations/vacation-calendar/Code.js

@@ -55,16 +55,12 @@ function sync() {
   maxDate.setMonth(maxDate.getMonth() + MONTHS_IN_ADVANCE);
 
   // Determines the time the the script was last run.
-  let lastRun = PropertiesService.getScriptProperties().getProperty('lastRun');
-  lastRun = lastRun ? new Date(lastRun) : null;
+  //let lastRun = PropertiesService.getScriptProperties().getProperty('lastRun');
+  //lastRun = lastRun ? new Date(lastRun) : null;
+  let lastRun = null;
 
   // Gets the list of users in the Google Group.
-  let users = getAllMembers(GROUP_EMAIL);
-  if (ONLY_DIRECT_MEMBERS){
-    users = GroupsApp.getGroupByEmail(GROUP_EMAIL).getUsers();
-  } else if (Array.isArray(GROUP_EMAIL)) {
-    users = getUsersFromGroups(GROUP_EMAIL);
-  }
+  let users = getUsersFromGroups(GROUP_EMAIL);
 
   // For each user, finds events having one or more of the keywords in the event
   // summary in the specified date range. Imports each of those to the team
@@ -199,43 +195,47 @@ function formatDateAsRFC3339(date) {
 /**
 * Get both direct and indirect members (and delete duplicates).
 * @param {string} the e-mail address of the group.
+* @param {array} the list of already added users.
+* @param {array} the list of already added addresses.
 * @return {object} direct and indirect members.
 */
-function getAllMembers(groupEmail) {
-  var group = GroupsApp.getGroupByEmail(groupEmail);
-  var users = group.getUsers();
-  var childGroups = group.getGroups();
-  for (var i = 0; i < childGroups.length; i++) {
-    var childGroup = childGroups[i];
-    users = users.concat(getAllMembers(childGroup.getEmail()));
+function getAllMembers(groupEmail, userEntities, addresses) {
+  let group = GroupsApp.getGroupByEmail(groupEmail);
+  let users = group.getUsers();
+  if (!ONLY_DIRECT_MEMBERS) {
+    try {
+      let childGroups = group.getGroups();
+      for (let i = 0; i < childGroups.length; i++) {
+        let childGroup = childGroups[i];
+        [userEntities, addresses] = getAllMembers(childGroup.getEmail(), userEntities, addresses);
+      }
+    } catch (e) {
+        console.error('Error attempting to pull groups due to %s. Skipping.',
+        e.toString());
+    }
   }
   // Remove duplicate members
-  var uniqueUsers = [];
-  var userEmails = {};
-  for (var i = 0; i < users.length; i++) {
-    var user = users[i];
-    if (!userEmails[user.getEmail()]) {
-      uniqueUsers.push(user);
-      userEmails[user.getEmail()] = true;
+  for (let i = 0; i < users.length; i++) {
+    let user = users[i];
+    if (!addresses.includes(user.getEmail())) {
+      userEntities.push(user);
+      addresses.push(user.getEmail());
     }
   }
-  return uniqueUsers;
+  return [userEntities, addresses];
 }
-
 /**
 * Get indirect members from multiple groups (and delete duplicates).
-* @param {array} the e-mail addresses of multiple groups.
+* @param {string or array} the e-mail addresses of multiple groups.
 * @return {object} indirect members of multiple groups.
 */
 function getUsersFromGroups(groupEmails) {
-  let users = [];
+  let users = [],  addresses = [];
+  if (!Array.isArray(groupEmails)) {
+    groupEmails = [groupEmails];
+  }
   for (let groupEmail of groupEmails) {
-    let groupUsers = GroupsApp.getGroupByEmail(groupEmail).getUsers();
-    for (let user of groupUsers) {
-      if (!users.some(u => u.getEmail() === user.getEmail())) {
-        users.push(user);
-      }
-    }
+    [users, addresses] = getAllMembers(groupEmail, users, addresses);
   }
   return users;
 }