Fetching CALDAV Events and Display on Wordpress-Site?

🍱 Features & apps 📆 Calendar
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trying to fetch caldav events and display on wordpress-page. not sure how to to this best (sabre? wordpress http calls? i get “error: no events found”. any help appreciated. tried these two scripts:

<?php
/**
 * Plugin Name: Custom Calendar Plugin
 * Description: Fetches events from Nextcloud CalDAV calendar and displays them in a table.
 * Version: 1.0
 * Author: Your Name
 */


add_shortcode('custom_calendar', 'display_custom_calendar');

// Shortcode callback function.
function display_custom_calendar() {
    $nextcloud_url = 'https://cloud.chole.ch/remote.php/dav/calendars/Daniel/gigs/';
    $username = '*******';
    $password = '*******';

    // Load Sabre library.
    require_once get_stylesheet_directory() . '/custom-calendar-plugin/vendor/autoload.php';

    // Initialize the CalDAV client.
    $settings = array(
        'baseUri' => $nextcloud_url,
        'userName' => $username,
        'password' => $password,
    );

    $client = new Sabre\DAV\Client($settings);

    try {
        // Fetch all events from the calendar.
        $calendar_url = $nextcloud_url . 'calendar/';
        $calendar_data = $client->propFind($calendar_url, array('{urn:ietf:params:xml:ns:caldav}calendar-data'));
        $events = $calendar_data[$calendar_url]['{urn:ietf:params:xml:ns:caldav}calendar-data'];

        // Parse the events data.
        $xml = new SimpleXMLElement($events);
        $events_array = json_decode(json_encode($xml), true);

        // Prepare the table.
        $table_html = '<table>';
        $table_html .= '<tr><th>Event Name</th><th>Start Time</th><th>End Time</th></tr>';

        foreach ($events_array['vevent'] as $event) {
            $event_name = $event['summary'];
            $start_time = date('Y-m-d H:i:s', strtotime($event['dtstart']));
            $end_time = date('Y-m-d H:i:s', strtotime($event['dtend']));

            // Add the event to the table.
            $table_html .= "<tr><td>$event_name</td><td>$start_time</td><td>$end_time</td></tr>";
        }

        $table_html .= '</table>';
    } catch (Exception $e) {
        // Handle exceptions if any.
        $table_html = 'Error fetching events: ' . $e->getMessage();
    }

    return $table_html;
}

2nd script tried:

<?php
/*
Template Name: Nextcloud Events
*/
get_header(); // Include the header file

// Replace 'YOUR_NEXTCLOUD_URL', 'YOUR_USERNAME', and 'YOUR_PASSWORD' with your Nextcloud credentials
$nextcloud_url = 'https://cloud.chole.ch/remote.php/dav/calendars/Daniel/gigs/';
$nextcloud_username = '*****';
$nextcloud_password = '*****';

// Fetch events from Nextcloud CalDAV using cURL
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $nextcloud_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($ch, CURLOPT_USERPWD, "$nextcloud_username:$nextcloud_password");
$response = curl_exec($ch);
if ($response === false) {
    echo 'cURL error: ' . curl_error($ch);
}
curl_close($ch);

// Parse the XML response
$xml = simplexml_load_string($response);
$events = $xml->children('urn:ietf:params:xml:ns:caldav')->calendar_data->children('urn:ietf:params:xml:ns:caldav')->comp;

// Display the events as a list
echo '<ul>';
foreach ($events as $event) {
    $event_details = $event->children('urn:ietf:params:xml:ns:caldav')->comp->vevent;
    $event_summary = (string)$event_details->summary;
    $event_start = (string)$event_details->dtstart;
    $event_end = (string)$event_details->dtend;

    echo '<li>';
    echo '<strong>' . $event_summary . '</strong><br>';
    echo 'Start: ' . $event_start . '<br>';
    echo 'End: ' . $event_end . '<br>';
    echo '</li>';
}
echo '</ul>';

get_footer(); // Include the footer file