boot.php

<?php 
namespace FriendsOfRedaxo\YFormCalendar;

use rex;
use rex_addon;
use rex_api_function;
use rex_extension;
use rex_plugin;
use rex_view;
use rex_yform;
use rex_yform_manager_dataset;

$package = rex_addon::get('yform_calendar');
if (rex_addon::get('yform')->isAvailable()) {
    rex_yform::addTemplatePath($package->getPath('ytemplates'));
    
    // Model Class für die Kalender-Tabelle registrieren
    rex_yform_manager_dataset::setModelClass('rex_yform_calendar', CalRender::class);
}

if (rex::isBackend()) {
    rex_view::addCssFile(rex_addon::get('yform_calendar')->getAssetsUrl('rrule.css'));
    rex_view::addJsFile(rex_addon::get('yform_calendar')->getAssetsUrl('rrule.js'));
}

// API-Klasse registrieren
rex_api_function::register($package->getPath('lib/rex_api_rrule.php'), 'rrule');

// Inline Script für RRule-Termine in Listview
if (rex::isBackend()) {
    rex_extension::register('PAGE_HEADER', function($ep) {
        $js = <<<'JS'
<script>
document.addEventListener('DOMContentLoaded', function() {
    // Delegiert Event-Listener für dynamisch hinzugefügte Buttons
    document.addEventListener('click', function(e) {
        if (e.target.closest('.btn-show-occurrences-list')) {
            const button = e.target.closest('.btn-show-occurrences-list');
            const rruleString = button.dataset.rrule;
            const exdateString = button.dataset.exdate || '';
            const buttonId = button.id;
            
            const listContainer = document.querySelector('.rrule-occurrences-list-' + buttonId);
            if (!listContainer) return;
            
            // Lade die Termine
            fetch('/redaxo/index.php?rex-api-call=rrule&action=get_next_occurrences', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/x-www-form-urlencoded',
                },
                body: 'rrule=' + encodeURIComponent(rruleString) + '&exdate=' + encodeURIComponent(exdateString) + '&start_date=' + new Date().toISOString().split('T')[0] + '&limit=10'
            })
            .then(response => response.json())
            .then(data => {
                let html = '';
                if (data.error) {
                    html = '<div class="alert alert-danger"><strong>Fehler:</strong> ' + data.error + '</div>';
                } else if (!data.occurrences || data.occurrences.length === 0) {
                    html = '<p class="text-muted">Keine Termine gefunden.</p>';
                } else {
                    html = '<ul class="list-group">';
                    data.occurrences.forEach(occ => {
                        html += '<li class="list-group-item">';
                        html += '<strong>' + occ.formatted + '</strong>';
                        html += '<br><small class="text-muted">' + occ.date + '</small>';
                        html += '</li>';
                    });
                    html += '</ul>';
                }
                listContainer.innerHTML = html;
            })
            .catch(err => {
                listContainer.innerHTML = '<div class="alert alert-danger"><strong>Fehler:</strong> ' + err.message + '</div>';
            });
        }
    }, false);
});
</script>
JS;
        return $ep->getSubject() . $js;
    });
}