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Google Calendar: Domain-Wide Delegation support for attendee invitations

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Service account can now impersonate a Workspace user (set gcal_impersonate_email
in config) to unlock attendee invitations with push notifications.
Falls back to silent event creation if impersonation is not configured.

Setup required in Google Admin Console:
  Security → API Controls → Domain-wide delegation
  → Add service account client_id with scope:
  https://www.googleapis.com/auth/calendar

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Astral04
2026-03-01 15:09:26 +01:00
co-authored by Claude Sonnet 4.6
parent 3561aa30bb
commit 804d454618
3 changed files with 31 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
application/config/google_calendar.php
+1
View File
@@ -3,3 +3,4 @@ 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
+4 -4
View File
@@ -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);
$workerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
}
$evelinCalId = $this->config->item('gcal_evelin_calendar_id');
if(!empty($evelinCalId)){
$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
$ownerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
}
$this->Service_model->updateBookingCalEvents($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);
$newWorkerEventId = $this->googlecalendar->createEvent($worker->google_calendar_id, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $worker->google_calendar_id);
}
if(!empty($evelinCalId)){
$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd);
$newOwnerEventId = $this->googlecalendar->createEvent($evelinCalId, $gcalTitle, $gcalDescription, $gcalStart, $gcalEnd, $evelinCalId);
}
$this->Service_model->updateBookingCalEvents($booking->booking_id, $newWorkerEventId, $newOwnerEventId);
application/libraries/GoogleCalendar.php
+26 -6
View File
@@ -4,6 +4,7 @@ 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';
@@ -20,6 +21,14 @@ 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
@@ -28,18 +37,25 @@ 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, $endDatetime) {
public function createEvent($calendarId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
if (!$this->service || empty($calendarId)) return null;
try {
$event = new Google_Service_Calendar_Event([
$eventData = [
'summary' => $title,
'description' => $description,
'start' => ['dateTime' => $startDatetime, 'timeZone' => 'Europe/Oslo'],
'end' => ['dateTime' => $endDatetime, 'timeZone' => 'Europe/Oslo'],
]);
$result = $this->service->events->insert($calendarId, $event);
];
if ($this->canInvite && !empty($attendeeEmail)) {
$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 $e) {
return null;
@@ -50,7 +66,7 @@ class GoogleCalendar {
* Update an existing calendar event.
* @return string|null The event ID, or null on failure.
*/
public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime) {
public function updateEvent($calendarId, $eventId, $title, $description, $startDatetime, $endDatetime, $attendeeEmail = null) {
if (!$this->service || empty($calendarId) || empty($eventId)) return null;
try {
$event = $this->service->events->get($calendarId, $eventId);
@@ -64,7 +80,11 @@ class GoogleCalendar {
'dateTime' => $endDatetime,
'timeZone' => 'Europe/Oslo',
]));
$result = $this->service->events->update($calendarId, $eventId, $event);
if ($this->canInvite && !empty($attendeeEmail)) {
$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;