From 25dad78622b2a8f41b8ebac6afebaa630bb87558 Mon Sep 17 00:00:00 2001
From: lwcorp <lwcorp@users.noreply.github.com>
Date: Mon, 17 Apr 2023 21:55:07 +0300
Subject: [PATCH] feat(calendar): Fixed broken link and added support for
 indirect members or multiple groups to Team Calendar (#390)

* Added support for also adding indirect members or multiple groups

* Fixed broken link
---
 README.md                                     |  2 +-
 .../automations/vacation-calendar/Code.js     | 55 ++++++++++++++++++-
 2 files changed, 55 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index aa105aee6..a56b53039 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ align="left"
 width="96px"/>
 ### Calendar
 - [List upcoming events](calendar/quickstart)
-- [Create a vacation calendar](calendar/vacationCalendar)
+- [Create a vacation calendar](solutions/automations/vacation-calendar/Code.js)
 
 <img
 src="https://www.gstatic.com/images/branding/product/2x/classroom_96dp.png"
diff --git a/solutions/automations/vacation-calendar/Code.js b/solutions/automations/vacation-calendar/Code.js
index aae6ae781..12eee288a 100644
--- a/solutions/automations/vacation-calendar/Code.js
+++ b/solutions/automations/vacation-calendar/Code.js
@@ -22,8 +22,12 @@ limitations under the License.
 let TEAM_CALENDAR_ID = 'ENTER_TEAM_CALENDAR_ID_HERE';
 // Set the email address of the Google Group that contains everyone in the team.
 // Ensure the group has less than 500 members to avoid timeouts.
+// Change to an array in order to add indirect members frrm multiple groups, for example:
+// let GROUP_EMAIL = ['ENTER_GOOGLE_GROUP_EMAIL_HERE', 'ENTER_ANOTHER_GOOGLE_GROUP_EMAIL_HERE'];
 let GROUP_EMAIL = 'ENTER_GOOGLE_GROUP_EMAIL_HERE';
 
+let ONLY_DIRECT_MEMBERS = false;
+
 let KEYWORDS = ['vacation', 'ooo', 'out of office', 'offline'];
 let MONTHS_IN_ADVANCE = 3;
 
@@ -55,7 +59,12 @@ function sync() {
   lastRun = lastRun ? new Date(lastRun) : null;
 
   // Gets the list of users in the Google Group.
-  let users = GroupsApp.getGroupByEmail(GROUP_EMAIL).getUsers();
+  if (ONLY_DIRECT_MEMBERS)
+    let users = GroupsApp.getGroupByEmail(GROUP_EMAIL).getUsers();
+  else if (Array.isArray(GROUP_EMAIL))
+    let users = getUsersFromGroups(GROUP_EMAIL);
+  else
+    let users = getAllMembers(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
@@ -177,3 +186,47 @@ function shouldImportEvent(user, keyword, event) {
 function formatDateAsRFC3339(date) {
   return Utilities.formatDate(date, 'UTC', 'yyyy-MM-dd\'T\'HH:mm:ssZ');
 }
+
+/**
+* Get both direct and indirect members (and delete duplicates).
+* @param {string} the e-mail address of the group.
+* @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()));
+  }
+  // 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;
+    }
+  }
+  return uniqueUsers;
+}
+
+/**
+* Get indirect members from multiple groups (and delete duplicates).
+* @param {array} the e-mail addresses of multiple groups.
+* @return {object} indirect members of multiple groups.
+*/
+function getUsersFromGroups(groupEmails) {
+  let users = [];
+  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);
+      }
+    }
+  }
+  return users;
+}