Can I use my php app to add events in Google Calendar? - php

Question

Is it possible to have add/edit/delete events in Google Calendar?
Because all I have accomplished is just to read my events. I`m enabling all the "scopes" I can find about the Calendar API but still I get an error 403 about "Request had insufficient authentication scopes / PERMISSION DENIED".
I have done so many tries to fix that and everytime I get to the same point. I am using OAuth 2.0 Client IDs credentials and one more question I have is which url I should use for the Authorized redirect URIs.
<?php
require __DIR__ . '/vendor/autoload.php';
/*
if (php_sapi_name() != 'cli') {
throw new Exception('This application must be run on the command line.');
}
*/
/**
* Returns an authorized API client.
* #return Google_Client the authorized client object
*/
function getClient()
{
$client = new Google_Client();
$client->setApplicationName('Google Calendar API PHP Quickstart');
$client->setScopes(Google_Service_Calendar::CALENDAR_READONLY);
$client->setAuthConfig('credentials.json');
$client->setAccessType('offline');
$client->setPrompt('select_account consent');
// Load previously authorized token from a file, if it exists.
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
$tokenPath = 'token.json';
if (file_exists($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;
}
// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Calendar($client);
$calendarId = 'primary';
$optParams = array(
'maxResults' => 10,
'orderBy' => 'startTime',
'singleEvents' => true,
'timeMin' => date('c'),
);
$results = $service->events->listEvents($calendarId, $optParams);
$events = $results->getItems();
#--------------------------------------------------------------------------------------------
// Refer to the PHP quickstart on how to setup the environment:
// https://developers.google.com/calendar/quickstart/php
// Change the scope to Google_Service_Calendar::CALENDAR and delete any stored
// credentials.
$event = new Google_Service_Calendar_Event(array(
'summary' => 'Google I/O 2015',
'location' => '800 Howard St., San Francisco, CA 94103',
'description' => 'A chance to hear more about Google\'s developer products.',
'start' => array(
'dateTime' => '2015-05-28T09:00:00-07:00',
'timeZone' => 'America/Los_Angeles',
),
'end' => array(
'dateTime' => '2015-05-28T17:00:00-07:00',
'timeZone' => 'America/Los_Angeles',
),
'recurrence' => array(
'RRULE:FREQ=DAILY;COUNT=2'
),
'attendees' => array(
array('email' => 'lpage#example.com'),
array('email' => 'sbrin#example.com'),
),
'reminders' => array(
'useDefault' => FALSE,
'overrides' => array(
array('method' => 'email', 'minutes' => 24 * 60),
array('method' => 'popup', 'minutes' => 10),
),
),
));
$calendarId = 'primary';
$event = $service->events->insert($calendarId, $event);
printf('Event created: %s\n', $event->htmlLink);
#--------------------------------------------------------------------------------------------------------
if (empty($events)) {
print "No upcoming events found.\n";
} else {
print "Upcoming events:\n";
foreach ($events as $event) {
$start = $event->start->dateTime;
if (empty($start)) {
$start = $event->start->date;
}
printf("%s (%s)\n", $event->getSummary(), $start);
echo "<br>";
}
}
?>

Answer 1

I was able to create the event by using your same code with a minor edit. I modified the read-only scope to allow read/write access instead of read-only. This is the final result:
<?php
require __DIR__ . '/vendor/autoload.php';
/*
if (php_sapi_name() != 'cli') {
throw new Exception('This application must be run on the command line.');
}
*/
/**
* Returns an authorized API client.
* #return Google_Client the authorized client object
*/
function getClient()
{
$client = new Google_Client();
$client->setApplicationName('Google Calendar API PHP Quickstart');
$client->setScopes(Google_Service_Calendar::CALENDAR);
$client->setAuthConfig('credentials.json');
$client->setAccessType('offline');
$client->setPrompt('select_account consent');
// Load previously authorized token from a file, if it exists.
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
$tokenPath = 'token.json';
if (file_exists($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;
}
// Get the API client and construct the service object.
$client = getClient();
$service = new Google_Service_Calendar($client);
$calendarId = 'primary';
$optParams = array(
'maxResults' => 10,
'orderBy' => 'startTime',
'singleEvents' => true,
'timeMin' => date('c') ,
);
$results = $service
->events
->listEvents($calendarId, $optParams);
$events = $results->getItems();
#--------------------------------------------------------------------------------------------
// Refer to the PHP quickstart on how to setup the environment:
// https://developers.google.com/calendar/quickstart/php
// Change the scope to Google_Service_Calendar::CALENDAR and delete any stored
// credentials.
$event = new Google_Service_Calendar_Event(array(
'summary' => 'Google I/O 2015',
'location' => '800 Howard St., San Francisco, CA 94103',
'description' => 'A chance to hear more about Google\'s developer products.',
'start' => array(
'dateTime' => '2015-05-28T09:00:00-07:00',
'timeZone' => 'America/Los_Angeles',
) ,
'end' => array(
'dateTime' => '2015-05-28T17:00:00-07:00',
'timeZone' => 'America/Los_Angeles',
) ,
'recurrence' => array(
'RRULE:FREQ=DAILY;COUNT=2'
) ,
'attendees' => array(
array(
'email' => 'lpage#example.com'
) ,
array(
'email' => 'sbrin#example.com'
) ,
) ,
'reminders' => array(
'useDefault' => false,
'overrides' => array(
array(
'method' => 'email',
'minutes' => 24 * 60
) ,
array(
'method' => 'popup',
'minutes' => 10
) ,
) ,
) ,
));
$calendarId = 'primary';
$event = $service
->events
->insert($calendarId, $event);
printf('Event created: %s\n', $event->htmlLink);
#--------------------------------------------------------------------------------------------------------
if (empty($events))
{
print "No upcoming events found.\n";
}
else
{
print "Upcoming events:\n";
foreach ($events as $event)
{
$start = $event
->start->dateTime;
if (empty($start))
{
$start = $event
->start->date;
}
printf("%s (%s)\n", $event->getSummary() , $start);
echo "<br>";
}
}
?>