John Davidson

Message:

Hi everyone.
I hope you all are doing well.

I know this question has been asked many times but non of the solutions provided there worked for me.

I am implementing google calendar API in custom PHP. I have followed the official documentation provided by Google. I have been able to create and get events for a specific user.

My original goal was to allow every user to get, create, update and delete Events on their own calendar.

Here's what I have been doing in the code.

This is calendarSetting.php file.

<?php

require __DIR__ . '/vendor/autoload.php';



function getClient()

{

    $client = new Google_Client();

    $client->setApplicationName('Google Calendar API PHP Quickstart');

    $client->setScopes(Google_Service_Calendar::CALENDAR);

    $client->setAuthConfig('client_secret.json');

    $client->setAccessType('offline');

    $client->setPrompt('select_account consent');



    

    $tokenPath = 'token.json';

    if (file_exists($tokenPath)) {

        $accessToken = json_decode(file_get_contents($tokenPath), true);

        $client->setAccessToken($accessToken);

    }



    // If there is no previous token or it's expired.

    if ($client->isAccessTokenExpired()) {

        // Refresh the token if possible, else fetch a new one.

        if ($client->getRefreshToken()) {

            $client->fetchAccessTokenWithRefreshToken($client->getRefreshToken());

        } else {

            // Request authorization from the user.

            $authUrl = $client->createAuthUrl();

            printf("Open the following link in your browser:\n%s\n", $authUrl);

            print 'Enter verification code: ';

            $authCode = trim(fgets(STDIN));



            // Exchange authorization code for an access token.

            $accessToken = $client->fetchAccessTokenWithAuthCode($authCode);

            $client->setAccessToken($accessToken);



            // Check to see if there was an error.

            if (array_key_exists('error', $accessToken)) {

                throw new Exception(join(', ', $accessToken));

            }

        }

        // Save the token to a file.

        if (!file_exists(dirname($tokenPath))) {

            mkdir(dirname($tokenPath), 0700, true);

        }

        file_put_contents($tokenPath, json_encode($client->getAccessToken()));

    }

    return $client;

}

?>

This is createCalendar.php file

<?php



  require __DIR__ . '/vendor/autoload.php';

  include('calendarSetting.php');

  session_start();

  $appointment_id = $_SESSION['appointment_id'];

  $patient_fname = $_SESSION['patient_fname'];

  $patient_lname = $_SESSION['patient_lname'];

  $patient_phone = $_SESSION['patient_phone'];

  $schedule = $_SESSION['appointment_date'];

  $start_date = $_SESSION['start'];

  $end_date = $_SESSION['end'];

 

    $client = getClient();

    $service = new Google_Service_Calendar($client);

    $event = new Google_Service_Calendar_Event(array(

        'summary' => $patient_fname . ' ' . $patient_lname,

        'description' => $patient_fname . ' ' . ' ' . $patient_lname . ' ' . $patient_phone ,

        

        'start' => array(

          'dateTime' => $start_date.':00+05:00',

          'timeZone' => 'America/Los_Angeles',

        ),

        'end' => array(

          'dateTime' => $end_date.':00+05:00',

          'timeZone' => 'America/Los_Angeles',

        ),

        'recurrence' => array(

          'RRULE:FREQ=DAILY;COUNT=1'

        ),

        'attendees' => array(

          array('email' => '[email protected]')

        )

         

        

      ));

    

      $calendarId = '[email protected]';

      $event = $service->events->insert($calendarId, $event);

    printf('Event created');

    header('location: Doctor');





?>

This is perfectly working for the user where $calendarId = '[email protected]';. but if I change the user it gives me an error.

Fatal error: Uncaught Google\Service\Exception: { "error": { "errors":
[ { "domain": "global", "reason": "notFound", "message": "Not Found" }
], "code": 404, "message": "Not Found" } } in
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Http\REST.php:128
Stack trace: #0
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Http\REST.php(103):
Google\Http\REST::decodeHttpResponse(Object(GuzzleHttp\Psr7\Response),
Object(GuzzleHttp\Psr7\Request), 'Google_Service_...') #1 [internal
function]: Google\Http\REST::doExecute(Object(GuzzleHttp\Client),
Object(GuzzleHttp\Psr7\Request), 'Google_Service_...') #2
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Task\Runner.php(182):
call_user_func_array(Array, Array) #3
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Http\REST.php(66):
Google\Task\Runner->run() #4
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Client.php(898):
Google\Http\REST::execute(Object(GuzzleHttp\Client),
Object(GuzzleHttp\Psr7\Request), 'Google_Service_...', Array, NULL) #5
F:\x in
F:\xampp\htdocs\bupa1\vendor\google\apiclient\src\Http\REST.php on
line 128

I have been trying to figure out why is this happening. so far what I found is that each time when i send a request to google to create the event my access token in the calendarSetting.php file isn't refreshing.

Now I got stuck on how can I get the refresh token so that a new user could also create events.

If anybody could help to figure this out I'll be very grateful.

Thank you

---

My Answer:
php

require_once 'vendor/autoload.php';

$client = new Google_Client();
$client->setAuthConfig('credentials.json');
$client->addScope(Google_Service_Calendar::CALENDAR);

if (isset($_SESSION['access_token']) && $_SESSION['access_token']) {
$client->setAccessToken($_SESSION['access_token']);
$service = new Google_Service_Calendar($client);

$event = new Google_Service_Calendar_Event(array(
'summary' => 'Test Event',
'description' => 'This is a test event',
'start' => array(
'dateTime' => '2022-01-01T10:00:00',
'timeZone' => 'America/Los_Angeles',
),
'end' => array(
'dateTime' => '2022-01-01T12:00:00',
'timeZone' => 'America/Los_Angeles',
),
));

$calendarId = 'primary';
$event = $service->events->insert($calendarId, $event);

echo 'Event created: ' . $event->htmlLink;
} else {
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . '/oauth2callback.php';
header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}


This code snippet is creating an event in the primary calendar of the authenticated user. If you want to create events for different users, you will need to modify the `$calendarId` variable to use the calendar ID of the specific user you want to create events for.

You can get the calendar ID of a user by listing all the calendars for the authenticated user and selecting the desired calendar ID.

Here's how you can list all calendars for the authenticated user:

php
$calendarList = $service->calendarList->listCalendarList();

foreach ($calendarList->getItems() as $calendarListEntry) {
echo $calendarListEntry->getId() . ' - ' . $calendarListEntry->getSummary() . '
';
}


Once you have the calendar ID of the user you want to create events for, you can use that ID in the `$calendarId` variable in the event creation code.

I hope this helps! Let me know if you have any further questions.