Revert Domain-Wide Delegation — not applicable for personal Gmail accounts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

application/config/google_calendar.php

@@ -3,4 +3,3 @@ defined('BASEPATH') OR exit('No direct script access allowed');
 
 $config['gcal_service_account_path'] = APPPATH . 'config/service-account-key.json';
 $config['gcal_evelin_calendar_id']   = 'katozoltan0804@gmail.com'; // Evelin's Calendar ID (e.g. her Gmail address)
-$config['gcal_impersonate_email']    = ''; // Workspace user to impersonate (e.g. evelin@studiobeve.no) — required for attendee invitations

application/controllers/Pages.php

@@ -451,11 +451,11 @@ class Pages extends CI_Controller {
 				$workerEventId = null;
 				$ownerEventId  = null;
 				if(!empty($worker->google_calendar_id)){
-					$workerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
+					$workerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
 				}
 				$evelinCalId = $this->config->item('gcal_evelin_calendar_id');
 				if(!empty($evelinCalId)){
-					$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
+					$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
 				}
 				$this->Service_model->updateBookingCalEvents($newBooking->booking_id, $workerEventId, $ownerEventId);
 			}
@@ -873,10 +873,10 @@ class Pages extends CI_Controller {
 		$newWorkerEventId = null;
 		$newOwnerEventId  = null;
 		if(!empty($worker->google_calendar_id)){
-			$newWorkerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
+			$newWorkerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
 		}
 		if(!empty($evelinCalId)){
-			$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
+			$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
 		}
 		$this->Service_model->updateBookingCalEvents($booking->booking_id, $newWorkerEventId, $newOwnerEventId);
 

application/libraries/GoogleCalendar.php

@@ -4,7 +4,6 @@ defined('BASEPATH') OR exit('No direct script access allowed');
 class GoogleCalendar {
 
     private $service = null;
-    private $canInvite = false;
 
     public function __construct() {
         require_once FCPATH . 'vendor/autoload.php';
@@ -21,14 +20,6 @@ class GoogleCalendar {
             $client = new Google_Client();
             $client->setAuthConfig($serviceAccountPath);
             $client->setScopes([Google_Service_Calendar::CALENDAR]);
-
-            // Domain-Wide Delegation: impersonate a Workspace user to unlock attendee invitations
-            $impersonateEmail = $CI->config->item('gcal_impersonate_email');
-            if (!empty($impersonateEmail)) {
-                $client->setSubject($impersonateEmail);
-                $this->canInvite = true;
-            }
-
             $this->service = new Google_Service_Calendar($client);
         } catch (Exception $e) {
             // Silently fail — calendar errors must never break the booking flow
@@ -37,25 +28,18 @@ class GoogleCalendar {
 
     /**
      * Create a calendar event.
-     * If Domain-Wide Delegation is configured and $attendeeEmail is provided,
-     * the attendee receives an invitation push notification via Google Calendar.
      * @return string|null  The new event ID, or null on failure.
      */
-    public function createEvent($calendarId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
+    public function createEvent($calendarId, $title, $description, $startDatetime, $endDatetime) {
         if (!$this->service || empty($calendarId)) return null;
         try {
-            $eventData = [
+            $event = new Google_Service_Calendar_Event([
                 'summary'     => $title,
                 'description' => $description,
                 'start'       => ['dateTime' => $startDatetime, 'timeZone' => 'Europe/Oslo'],
                 'end'         => ['dateTime' => $endDatetime,   'timeZone' => 'Europe/Oslo'],
-            ];
+            ]);
-            if ($this->canInvite && !empty($attendeeEmail)) {
+            $result = $this->service->events->insert($calendarId, $event);
-                $eventData['attendees'] = [['email' => $attendeeEmail]];
-            }
-            $event  = new Google_Service_Calendar_Event($eventData);
-            $params = ($this->canInvite && !empty($attendeeEmail)) ? ['sendUpdates' => 'all'] : [];
-            $result = $this->service->events->insert($calendarId, $event, $params);
             return $result->getId();
         } catch (Exception $e) {
             return null;
@@ -66,7 +50,7 @@ class GoogleCalendar {
      * Update an existing calendar event.
      * @return string|null  The event ID, or null on failure.
      */
-    public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
+    public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime) {
         if (!$this->service || empty($calendarId) || empty($eventId)) return null;
         try {
             $event = $this->service->events->get($calendarId, $eventId);
@@ -80,11 +64,7 @@ class GoogleCalendar {
                 'dateTime' => $endDatetime,
                 'timeZone' => 'Europe/Oslo',
             ]));
-            if ($this->canInvite && !empty($attendeeEmail)) {
+            $result = $this->service->events->update($calendarId, $eventId, $event);
-                $event->setAttendees([new Google_Service_Calendar_EventAttendee(['email' => $attendeeEmail])]);
-            }
-            $params = ($this->canInvite && !empty($attendeeEmail)) ? ['sendUpdates' => 'all'] : [];
-            $result = $this->service->events->update($calendarId, $eventId, $event, $params);
             return $result->getId();
         } catch (Exception $e) {
             return null;